Leg : 83 Top/Bottom Interval(mm): 0/1480 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 837.48
Core: 71 Top of Core Depth (m) : 836.00
Sect: 1 Top of Section Depth(m): 836.00
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (1-13), 2 (15-23), 3 (26-42), 4 (44-48),
5 (50-56), 6 (58-64), 7 (67-74), 8 (77-86),
9 (88-94), 10 (96-101), 11 (103-106), 12 (109-115),
13 (117-122), 14 (124-133), 15 (136-147);
Texture : MOD PHYRIC, FINE GRAINED, PCE 15 IS VERY FINE
GRAINED AND CLOSE TO PILLOW RIM;
Structure : ABUNDANT VEINS OF DARK GREEN CLAY MINERAL, SULFIDES
IN FRACTURED SURFACE ON PCE 8, PCE 1 HAS WHITE
FIBROUS MINERAL IN VEIN WITH GREEN CLAY, CRACKS
FILLED WITH DARK GREEN CLAY HAVE AN AVG WIDTH OF
1 MM SPAN 40 CM IN TOTAL LENGTH WITH VERTICAL (11)
OBLIQUE (1) AND HORIZONTAL (9), PILLOWS, PCE 15 IS
CLOSE TO PILLOW RIM;
Alteration : MOD
PCE 15 CLOSE TO PILLOW RIM ALTERED TO LIGHT GREY
COLOR;
Comments : DARK GREYISH GREEN;
Phenocrysts: OLIVINE
Size(mm): TO 2
OL ALTERED TO DARK GREEN CLAY MINERAL;
PLAGIOCLASE
Size(mm): TO 3
CLINOPYROXENE
POSSIBLY PRESENT;
Replacement: CLAY
Minerals Replaced: OL
OL ALTERED TO DARK GREEN CLAY MINERAL;
CLAY MIN
IN VEINS;
SULFIDES
ON FRACTURED SURFACE OF PCE 8;
Leg : 83 Top/Bottom Interval(mm): 0/1440 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 844.94
Core: 72 Top of Core Depth (m) : 843.50
Sect: 1 Top of Section Depth(m): 843.50
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-10), 2 (11-23), 3 (25-39), 4 (40-46),
5 (47-63), 6 (64-79), 7 (80-84), 8 (86-91),
9 (92-113), 10 (114-120), 11 (121-136),
12 (137-144);
Texture : MOD PHYRIC, VERY FINE GRAINED, PCE 2 ON LOWER LEFT
HAS FINE GLASSY PILLOW RIND;
Structure : VEINS OF ALTERATION COMMON, OFTEN VEINS EXHIBIT
COLOR ZONATION, DARK GREEN IN THE VEIN, LIGHT GREY
TO DARK GREY AWAY FROM VEINS, GREEN CLAY MINERAL
OFTEN WITH A RADIATE HABIT, CRACKS HAVE AVG WIDTH
LESS THAN 2 MM WITH VERTICAL (9) OBLIQUE (4) AND
HORIZONTAL (11);
Alteration : MOD
VEINS OF ALTERATION COMMON OFTEN EXHIBITING COLOR
ZONATION, IRON SULFIDE COMMON IN ALTERED AREAS;
Comments : DARK GREYISH GREEN, PCE 2 CONSISTS OF A BRECCIA
WITH MATRIX REPLACED BY BLUISH GREEN CLAY MINERAL,
IN PCE 6 VERTICAL CONTACT WITH GLASS, PCE 6A-6B IS
ONE UNIT;
Phenocrysts: OLIVINE ( 5%)
Size(mm): TO 3
OL ALTERED TO DARK GREEN CLAY MINERAL;
PLAGIOCLASE ( 3-4%)
Size(mm): TO 3
PLAG FRESH;
CLINOPYROXENE
POSSIBLY PRESENT;
Replacement: CLAY
Minerals Replaced: OL
OL ALTERED TO DARK GREEN CLAY MINERAL;
SULFIDES
IRON SULFIDE IN ALTERED AREAS;
CLAY MINERALS
PCE 2 CONSISTS OF BRECCIA WITH MATRIX REPLACED BY
BLUISH GREEN CLAY MINERAL, GREEN CLAY IN CRACKS
AND VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1430 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 846.43
Core: 72 Top of Core Depth (m) : 843.50
Sect: 2 Top of Section Depth(m): 845.00
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1A (2-11), 1B (11-20), 2 (21-27), 3 (28-43),
4 (45-56), 5 (57-70), 6 (72-83), 7A (84-87),
7B (87-97), 7C (97-105), 7D (105-112), 7E (112-122),
7F (122-130), 7G (130-143);
Texture : MOD PHYRIC, FINE GRAINED, PCE 5 HAS LARGE EUHEDRAL
CRYSTAL 1.5 CM LONG;
Structure : ABUNDANT VEINS CONTAIN DARK GREEN AND WHITE CLAYS,
MANY SURFACES HAVE RADIATING FIBROUS PALE GREEN
CLAYS TO 1 CM ACROSS PARTICULARLY IN PCE 7C + 7F AND
PCE 5, PYRITE IN BROKEN VEINS AND ON SOME SURFACES,
PILLOW UNITS, CRACKS RANGE FROM 1 MM TO 2 MM ALL
FILLED WITH CLAYS WITH VERTICAL (7) OBLIQUE (3) AND
HORIZONTAL (3);
Alteration : MOD
ON PCE 5 LARGE EUHEDRAL CRYSTAL PARTIALLY ALTERED
TO DARK GREEN MATERIAL;
Comments : DARK GREYISH GREEN, PCE 5 HAS LARGE EUHEDRAL
CRYSTAL;
Phenocrysts: OLIVINE ( 3%)
Size(mm): TO 2
OL REPLACED BY DARK GEEN CLAYS;
PLAGIOCLASE ( 5%)
Size(mm): 3-4
Replacement: CLAY
Minerals Replaced: OL
OL REPLACED BY DARK GREEN CLAYS;
CLAY MINERALS
PYRITE
Minerals Replaced: OL
ON SOME SURFACES AND IN BROKEN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 848.00
Core: 72 Top of Core Depth (m) : 843.50
Sect: 3 Top of Section Depth(m): 846.50
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (0-10), 2 (10-19), 3 (20-29), 4 (30-35),
5 (36-108), 6 (109-119), 7 (120-129), 8 (130-150);
Texture : MOD PHYRIC, FINE GRAINED, PCE 5G AND 5H CONSIST OF
ALTERED PILLOW RIND OF GLASSY MATERIAL, PCE 5H SHOWS
HYALOCLASTITE ORIGIN;
Structure : VEINS FILLED WITH DARK GREEN CLAY MINERAL SOMETIMES
SHOWING A ZONATION WITH WIDTH OF 4 MM, LIGHT GREY
ZONE OCCURS NEXT TO GREEN CLAY MINERAL AND DARK GREY
RIM INWARD FROM VEIN, IRON SULFIDE COMMON IN VEIN,
CRACKS OF AVG WIDTH < 2 MM FILLED WITH GREEN CLAY
MINERAL WITH VERTICAL (10) OBLIQUE (14)
HORIZONTAL (17);
Alteration : MOD
IRON SULFIDE COMMON IN ALTERED AREAS OR VEINS,
PLAG FRESH AND SLIGHTLY ALTERED;
Comments : DARK GREYISH GREEN;
Phenocrysts: OLIVINE ( 5%)
Size(mm): TO 4
OL ALTERED TO DARK GREEN CLAY MINERAL;
PLAGIOCLASE ( 3-4%)
Size(mm): TO 3
PLAG FRESH AND SLIGHTLY ALTERED;
Replacement: CLAY
Minerals Replaced: OL
OL ALTERED TO DARK GREEN CLAY MINERAL;
SULFIDE
IN ALTERED AREAS OR VEINS;
CLAY MINERALS
Leg : 83 Top/Bottom Interval(mm): 0/ 680 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 848.68
Core: 72 Top of Core Depth (m) : 843.50
Sect: 4 Top of Section Depth(m): 848.00
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-10), 2 (11-19), 3 (21-29), 4A (30-37),
4B (37-44), 5 (45-58), 6 (60-68);
Texture : MOD PHYRIC, FINE GRAINED, PCE 6 HAS A PILLOW RIM;
Structure : ALL FRACTURES FILLED BY DARK GREEN CLAYS, IN PCE 4A
ONE VEIN IS ZONED, DARK GREEN CLAYS FILL THE VEIN
WITH SURROUNDING BASALT OF PALE GREY AND WIDTH OF
5 MM, ALL OTHER VEINS HAVE NO ZONATION, PYRITE ON
VEIN SURFACES AND ON CUT SURFACES, CRACKS RANGE FROM
1 TO 2 MM WITH VERTICAL (5) OBLIQUE (3) AND
HORIZONTAL (4);
Alteration : MOD
PLAG FRESH;
Comments : DARK GREYISH GREEN;
Phenocrysts: OLIVINE ( 3%)
Size(mm): TO 2
OL REPLACED TO DARK GREEN CLAYS;
PLAGIOCLASE ( 5%)
Size(mm): 3-4
PLAG FRESH;
Replacement: CLAY
Minerals Replaced: OL
OL REPLACED BY DARK GREEN CLAYS;
PYRITE
ON VEIN SURFACES AND ON CUT SURFACES;
CLAY MINERALS
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 854.00
Core: 73 Top of Core Depth (m) : 852.50
Sect: 1 Top of Section Depth(m): 852.50
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (1-11), 2 (12-21), 3 (22-30), 4 (31-39),
5A (40-45), 5B (45-52), 5C (52-58), 5D (59-73),
5E (73-81), 6A (82-89), 6B (90-97), 6C (98-102),
6D (102-107), 6E (108-114), 7 (115-121),
8 (122-134), 9 (135-142), 10 (143-150);
Texture : SPARSELY PHYRIC, FINE GRAINED, SOME PARTS ARE MOD
PHYRIC BUT DO NOT APPEAR TO BE INDEPENDENT UNITS AS
SEEN IN PCES 1 + 2 + 8 + 9, PCE 8 HAS AN AMBIGUOUS
TEXTURE MORE COARSELY CRYSTALLINE IN LOWER HALF MAY
BE DUE TO AN ALTERATION EFFECT, PCES (1-10) ARE
MASSIVE FLOW COARSE GRAINED COMPARED TO OTHER PILLOW
UNITS;
Structure : VEINS OF DARK TO LIGHT GREEN ALTERATION CLAY.MINS
ARE < 2 MM IN SIZE GENERALLY BUT MAY BE AS MUCH AS
4 MM, IRON SULFIDES OCCUR IN VEINS, VEIN CLAY.MINS
ARE ACICULAR OR RADIATE HABIT, CRACKS ARE FILLED
WITH PALE TO DARK GREEN CLAY.MINS WITH VERTICAL (7)
OBLIQUE (13) HORIZONTAL (5), PCES (1-10) ARE MASSIVE
FLOW COARSE-GRAINED COMPARED TO OTHER PILLOW UNITS;
Alteration : MOD
VEINS OF DARK TO LIGHT GREEN ALTERATION CLAY.MINS,
OL ALTERED TO DARK GREEN CLAY MINERAL, TEXTURE IN
PCE 8 MAY BE DUE TO ALTERATION;
Comments : DARK GREY GREEN;
Phenocrysts: OLIVINE ( <3%)
Size(mm): TO 2
OL ALTERED TO DARK GREEN CLAY MINERAL;
CLINOPYROXENE
CPX PHENOS MAY BE PRESENT;
Replacement: CLAY
Minerals Replaced: OL
OL ALTERED TO DARK GREEN CLAY MINERAL;
SULFIDE
IN VEINS;
CLAY MINERALS
IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1370 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 855.37
Core: 73 Top of Core Depth (m) : 852.50
Sect: 2 Top of Section Depth(m): 854.00
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1A (2-17), 1B (17-21), 1C (21-31), 2 (32-44),
3 (45-55), 4 (55-65), 5 (66-72), 6 (73-80),
7 (81-91), 8 (92-101), 9 (102-125), 10 (126-136);
Texture : MOD PHYRIC, FINE GRAINED;
Structure : FRACTURES FILLED BY DARK GREEN CLAYS WITH NO ZONING
ARE WELL DEVELOPED IN PCE 1C WHERE MULTI-STAGE
FILLING CAN BE SEEN WITH WHITE AND PALE GREEN CLAYS
TOGETHER WITH DARK CLAYS, PYRITE ON SOME VEIN
SURFACES, PILLOWS QUESTIONABLE, CRACKS RANGE FROM
1 TO 5 MM WITH VERTICAL (7) HORIZONTAL (6)
OBLIQUE (10);
Alteration : MOD
OL PSEUDOMORPHED BY DARK CLAY MINERALS;
Comments : GREYISH GREEN;
Phenocrysts: OLIVINE ( 3%)
Size(mm): 2-3
OL PSEUDOMORPHED BY DARK CLAY MINERALS;
PLAGIOCLASE ( 5%)
PLAG IN PCES (1-3) HAS SINGLE PHENOS OF 2-3 MM IN
GLOMEROCRYSTIC CLUMPS OF 5 MM ACROSS, PCES (4-10)
HAVE SINGLE PHENOS BUT NO GLOMEROCRYSTS, CPX ON
PCE 5 OTHERWISE UNCERTAIN;
Replacement: CLAY
Minerals Replaced: OL
OL PSEUDOMORPHED BY DARK CLAY MINERALS;
PYRITE
ON VEIN SURFACES;
CLAY MINERALS
SEE PCE 1C FOR FRACTURES WHERE MULTISTAGE FILLING
CAN BE SEEN WITH WHITE AND PALE GREEN CLAYS
TOGETHER WITH DARK CLAYS;
Leg : 83 Top/Bottom Interval(mm): 0/1300 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 862.80
Core: 74 Top of Core Depth (m) : 861.50
Sect: 1 Top of Section Depth(m): 861.50
LITHOLOGY: OL-PLAG SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-41), 2 (43-49), 3 (51-58), 4 (60-76),
5 (77-86), 6 (87-99), 7 (100-121), 8 (123-129);
Texture : SPARSELY TO MOD PHYRIC, FINE GRAINED, PCE 2 IS VERY
FINE GRAINED AND APHYRIC, PCES NUMBERED 1 COULD BE
PILLOW MARGINS, PCE 2 HAS DARK GREEN CLAY AT THE
RIMS;
Structure : FRACTURES UP TO 3 MM IN RANGE ARE FILLED WITH DARK
GREEN CLAY.MINS, SULFIDES OCCUR ASSOCIATED WITH CLAY
IN SOME VEINS, CRACKS RANGE FROM 1 TO 8 MM WITH
VERTICAL (4) HORIZONTAL (3) OBLIQUE (1), PCE 2
CONTAINS SEVERAL VEINS UP TO 8 MM WIDE FILLED BY A
WHITE FIBRO-RADIATED MATERIAL IN THE CENTER POSSIBLY
ZEOLITE AND DARK GREEN CLAY AT THE RIMS;
Alteration : MOD
OL PHENOS ALTERED IN DARK GREEN CLAY, PARTS OF PCE
1 ARE ALTERED IN DARK GREEN CLAY + SULFIDES AND
MORE RARELY IN WHITE MATERIAL;
Comments : GREYISH GREEN;
Phenocrysts: OLIVINE
Size(mm): .5-3
OL ALTERED IN DARK GREEN CLAY;
PLAGIOCLASE
Size(mm): .5-2
Replacement: CLAY
Minerals Replaced: OL
OL ALTERED IN DARK GREEN CLAY;
SULFIDES
OCCUR ASSOCIATED WITH CLAY IN SOME VEINS;
CLAY MINERALS
IN FRACTURES AND VEINS;
ZEOLITE
IDENTITY UNCERTAIN;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 872.00
Core: 75 Top of Core Depth (m) : 870.50
Sect: 1 Top of Section Depth(m): 870.50
LITHOLOGY: APHYRIC TO PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1A (0-11), 1B (11-16), 1C (17-22), 2 (25-70),
3A (72-77), 3B (78-89), 3C (90-92), 4 (94-99);
5 (102-110), 6 (111-119), 7 (121-131), 8 (133-145);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE GRAINED, PCE 8 IS
VERY FINE GRAINED;
Structure : VEINS AND VEINLETS FILLED BY GREEN CLAY AND
OCCASIONALLY SOME WHITE MATERIAL IS OBSERVED, VEINS
RANGE UP TO 1 MM, VEIN ORIENTATION IS OBLIQUE (8)
VERTICAL (95 CM) HORIZONTAL (7) WITH AVG WIDTH 1 MM;
Alteration : MOD;
Comments : ENTIRE SECTION RELATIVELY UNIFORM IN COMPOSITION AND
APPEARANCE, NO CONTACTS HAVE BEEN FOUND, SAME AS
LOWER PART OF CORE 74 SECTION 1 OR BELOW 50 CM;
Phenocrysts: OLIVINE
Size(mm): TO 1.5
OL REPLACED BY GREEN CLAY;
PLAGIOCLASE
Size(mm): TO 2
Replacement: CLAY
Minerals Replaced: OL
OL REPLACED BY GREEN CLAY;
SULFIDES
ON PARTS OF PCE 2;
CLAY MINERALS
Leg : 83 Top/Bottom Interval(mm): 0/ 700 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 872.70
Core: 75 Top of Core Depth (m) : 870.50
Sect: 2 Top of Section Depth(m): 872.00
LITHOLOGY: APHYRIC TO PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (0-32), 2 (33-44), 3 (46-55), 4 (56-70);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE GRAINED, CHILLED
CONTACTS ARE OBSERVED ON PCE 1 PARTS;
Structure : VEINS AND VEINLETS ARE FILLED BY DARK GREEN CLAY
WITH SOME WHITE MATERIAL IN THE CENTER, VEIN
STATISTICS ARE OBLIQUE (8) VERTICAL (3) 25 CM AND
HORIZONTAL (1) WITH AVG THICKNESS OF 1 MM;
Alteration : MOD
PLAG APPEARS FRESH;
Comments : SIMILAR TO CORE 75 SECTION 1, CHILLED CONTACTS ARE
OBSERVED ON PCE 1;
Phenocrysts: OLIVINE
Size(mm): <1.5
OL REPLACED BY GREEN CLAY;
PLAGIOCLASE
Size(mm): <1.5
PLAG APPEARS FRESH;
Replacement: CLAY
Minerals Replaced: OL
OL REPLACED BY GREEN CLAY;
CLAY MINERALS
IN VEINS AND VEINLETS;
Leg : 83 Top/Bottom Interval(mm): 0/ 970 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 880.47
Core: 76 Top of Core Depth (m) : 879.50
Sect: 1 Top of Section Depth(m): 879.50
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-8), 2 (10-20), 3 (21-32), 4 (33-40),
5 (41-49), 6A (50-59), 6B (59-64), 7 (65-69),
8 (71-96);
Texture : SPARSELY TO MOD PHYRIC, FINE GRAINED;
Structure : VEINLETS RANGING FROM .5 TO 2 MM ARE FILLED BY DARK
GREEN CLAY, VEIN STATISTICS ARE VERTICAL 16 CM LONG
OBLIQUE (2) AND HORIZONTAL (6);
Alteration : MOD
PCE 1 HAS A RED ALTERATION BAND OF 1 TO 3 MM WIDE,
PCE 7 HAS A REDDISH AREA;
Comments : NO CONTACTS, CORE 76 SECTION 1 SIMILAR TO CORE 75;
Phenocrysts: OLIVINE
Size(mm): 1-4
OL REPLACED BY DARK GREEN CLAY;
PLAGIOCLASE
Size(mm): <2
PLAG FRESH;
Replacement: CLAY
Minerals Replaced: OL
OL REPLACED BY DARK GREEN CLAY;
CLAY MINERALS
IN VEINLETS;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 890.00
Core: 77 Top of Core Depth (m) : 888.50
Sect: 1 Top of Section Depth(m): 888.50
LITHOLOGY: DOLERITIC APHYRIC BASALT;
Piece No. : PCES 1 (0-13), 2 (14-21), 3 (22-70), 4 (71-84),
5 (85-107), 6 (107-150);
Texture : APHYRIC, MEDIUM GRAINED, RELATIVELY UNIFORM IN
TEXTURE THROUGHOUT ENTIRE SECTION, PCE 6A SHOWS AN
OBLIQUE 50 DEGREE CHILLED MARGIN AGAINST DOLERITIC
BASALT OR AN INTRUSIVE CHILLED CONTACT;
Structure : VEINS AND VEINLETS ARE FILLED WITH BLUISH GREEN CLAY
AND SULFIDES ARE COMMON, PCE 2 CONTAINS ALSO WHITE
MINERALS IN FRACTURES, VEIN STATISTICS ARE
OBLIQUE (8) HORIZONTAL (3) VERTICAL OF 21 CM WITH AN
AVG WIDTH LESS THAN OR EQUAL TO 1 MM;
Alteration : MOD;
Comments : NO CONNECTION WITH CORE 76 SECTION 1 FOR THIS
SECTION REPRESENTS A SEPARATE UNIT, THE END OF THE
UNIT IS PCE 6A AND THE FOLLOWING UNIT MIGHT BE A
DIKE, CORE 77 SECTION 2 IS INTRUSIVE INTO CORE 77
SECTION 1;
Replacement: CLAY
VEINS AND VEINLETS FILLED WITH BLUISH GREEN CLAY;
SULFIDES
IN VEINS AND VEINLETS;
OTHER
WHITE MINERALS IN FRACTURES;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 891.50
Core: 77 Top of Core Depth (m) : 888.50
Sect: 2 Top of Section Depth(m): 890.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-11), 2 (21-46), 3 (49-54), 4 (56-69),
5 (71-79), 6 (86-99), 7 (101-112), 8 (113-121),
9 (124-132), 10 (134-146);
Texture : APHYRIC, FINE TO MEDIUM GRAINED,
PROGRESSIVELY COARSER FROM PCE 1 TO PCE 6, BELOW
PCE 6 BASALT IS FAIRLY UNIFORM IN GRAIN SIZE OF
FINE TO MEDIUM;
Structure : CRACKS ARE FILLED WITH DARK GREEN CLAY MINERAL,
SULFIDES ARE COMMON IN VEINS, PCE 7 HAS SLICKENSIDED
FRACTURE SURFACES, CRACKS HAVE AN AVG WIDTH < 1 MM
WITH VERTICAL 20 CM HORIZONTAL (1) AND OBLIQUE (0);
Alteration : MOD;
Comments : THIS SECTION IS PART OF LOWERMOST INTRUSIVE PIECE IN
SECION 1;
Replacement: CLAY MINERALS
CRACKS ARE FILLED WITH DARK GREEN CLAY MINERAL;
SULFIDES
COMMON IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1200 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 892.70
Core: 77 Top of Core Depth (m) : 888.50
Sect: 3 Top of Section Depth(m): 891.50
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS CORE 77 SECTION 2;
Piece No. : PCES 1A (O-20), 1B (21-34), 2 (36-46), 3 (47-55),
4 (56-65), 5 (66-74), 6 (76-119);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, VERY UNIFORM
TEXTURE THROUGHOUT SECTION;
Structure : FIVE HORIZONTAL CRACKS WITH AN AVG WIDTH LESS THAN
OR EQUAL TO 1 MM AND ALL FILLED WITH DARK GREEN
CLAY.MINS, SULFIDES COMMON IN FRACTURES;
Alteration : MOD;
Comments : SAME UNIT AS CORE 77 SECTION 2;
Replacement: CLAY MINERALS
CRACKS ARE FILLED WITH GREEN CLAY;
SULFIDES
COMMON IN FRACTURES;
Leg : 83 Top/Bottom Interval(mm): 0/1470 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 898.97
Core: 78 Top of Core Depth (m) : 897.50
Sect: 1 Top of Section Depth(m): 897.50
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS CORE 77 SECTIONS 1 + 2 + 3;
Piece No. : PCES 1 (2-6), 2 (7-17), 3A (19-34), 3B (35-47),
3C (48-54), 3D (55-64), 3E (66-75), 3F (77-95),
3G (95-109), 3H (109-114), 3I (113-120),
3J (120-123), 3K (123-132), 4 (134-146);
Texture : APHYRIC, FINE GRAINED, PCE 3H IS VERY FINE GRAINED
AND COULD BE A CHILLED MARGIN AND SO THE BOTTOM OF A
UNIT, PCE 3I AND 3J SEEM TO BE BRECCIAS;
Structure : VEINLETS UP TO 2 MM WIDE ARE FILLED BY LIGHT GREEN
CLAY + PYRITE, VEINLETS ARE SO NUMEROUS THAT THEY
GIVE TO SOME PCES AN APPEARANCE OF BRECCIA SEE
PCES 2 AND 3A-3J, IN PCES 2 + 3G + 3H + 3I THE
VEINS ARE UP TO 18 MM WIDE, THESE VEINS CONTAIN A
WHITE MATERIAL POSSIBLY CALCITE + YELLOWISH GREEN
MINERAL WITH THE SAME COLOR AS EPIDOTE + COLORLESS
PRISMS POSSIBLY QUARTZ, COLORLESS PRISMS ONLY
FOUND IN PCE 2 AND SIMILAR TO THOSE SEEN IN CORE 73
SECTION 2, THE FRACTURE STATISTICS ARE
HORIZONTAL (2) OBLIQUE (8) AND VERTICAL 24 CM,
PCES 1-3H EQUAL ONE UNIT-POSSIBLE MASSIVE FLOW;
Alteration : MOD;
Comments : GREYISH GREEN, SAME LITHOLOGY AS CORE 77 SECTIONS
1 + 2 + 3, COLORLESS PRISMS POSSIBLY QUARTZ FOUND
IN PCE 2, PCE 3I + 3J SEEM TO BE BRECCIAS;
Replacement: CLAY MINERALS
IN VEINLETS;
PYRITE
IN VEINLETS;
OTHER
YELLOWISH GREEN MINERAL WITH SAME COLOR AS
EPIDOTE WITH IDENTITY UNCERTAIN;
CALCITE
IDENTITY UNCERTAIN, MAY BE IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/ 380 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 899.38
Core: 78 Top of Core Depth (m) : 897.50
Sect: 2 Top of Section Depth(m): 899.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (2-5), 1B (5-9), 1C (10-17), 1D (17-24),
1E (25-27), 1F (27-34), 1G (34-38);
Texture : APHYRIC, PCES 1A-1E ARE FINE TO MEDIUM GRAINED,
PCE 1E IS VERY FINE GRAINED + A CHILLED MARGIN
AND PROBABLY LOWER CONTACT TO 1A-1D MATERIAL, PCE 1F
HAS CHILLED BASALT SEPARATED FROM COARSE GRAINED
BASALT BY GLASS AREA ALTERED TO LIGHT GREEN CLAYS,
PCE 1G IS FINE GRAINED BASALT WITH A CHILLED MARGIN,
SEE GRAPHIC REPRESENTATION FOR ARROWS ON GLASS
AREAS WHICH INDICATE DIRECTION OF CHILLING;
Structure : PCES 1A-1E ARE HEAVILY VEINED BY LIGHT AND DARK
GREEN CLAYS WITH PYRITE, PILLOW POSSIBLE IN PCE 1E;
Alteration : MOD
IN PCE 1F GLASS AREA ALTERED TO LIGHT GREEN CLAYS;
Comments : GREYISH GREEN, PCE 1E HAS CHILLED MARGIN WHICH IS
PROBABLY A LOWER CONTACT TO 1A-1D MATERIAL, PCE 1G
HAS FINE GRAINED BASALT WITH CHILLED MARGIN WHERE
THE RELATIONSHIP WITH OTHER BASALTS IS UNCLEAR
PERHAPS A PILLOW TO PILLOW OR DIKE CONTACT, SEE
GRAPHIC REPRESENTATION FOR ARROWS ON GLASS AREAS
WHICH INDICATE DIRECTION OF CHILLING;
Replacement: CLAY MINERALS
IN VEINS;
PYRITE
IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 380/1380 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 900.38
Core: 78 Top of Core Depth (m) : 897.50
Sect: 2 Top of Section Depth(m): 899.38
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1H (38-45), 1I (45-54), 1J (54-64), 1K (65-79),
1L (69-77), 1M (77-84), 2 (85-95), 3 (96-105),
4 (108-112), 5 (115-121), 6 (123-128), 7 (130-137);
Texture : SPARSELY PHYRIC, FINE TO MEDIUM GRAINED, PCE 7 IS
VERY FINE GRAINED;
Alteration : MOD
ALTERATION IS NOT AS INTENSE AS IN 1A-1E;
Comments : GREYISH GREEN;
Phenocrysts: OLIVINE ( 1%)
Size(mm): 2
OL ALTERED,IN PCE 7 OL IS 2-3 PERCENT AND 2 MM;
PLAGIOCLASE ( <1%)
Size(mm): 1-2
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 906.00
Core: 79 Top of Core Depth (m) : 904.50
Sect: 1 Top of Section Depth(m): 904.50
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
SAME LITHOLOGY AS CORE 78;
Piece No. : PCES 1 (2-6), 2 (7-11), 3A (13-20), 3B (21-26),
4 (27-34), 5 (35-38), 6 (41-48), 7 (50-56),
8 (57-63), 9 (64-70), 10 (71-76), 11 (77-82),
12 (83-88), 13 (90-92), 14 (94-102), 15 (103-110),
16 (111-121), 17 (122-126), 18 (127-134),
19 (135-141), 20 (142-146);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE GRAINED, PCES 1 +
3A-4 ARE BRECCIAS WHOSE ELEMENTS ARE CEMENTED BY
GREEN CLAY;
Structure : VEINLETS RANGING FROM .5 TO 2 MM WIDE ARE COMPOSED
OF DARK GREEN CLAY AND PCES 3A + 3B + 4 HAVE A
WHITE MINERAL AND A YELLOWISH GREEN MINERAL (SAME AS
IN CORE 78), FRACTURES WITH HORIZONTAL (2)
OBLIQUE (7) AND VERTICAL (10 CM);
Alteration : MOD;
Comments : GREYISH GREEN, PCES 1 + 3A-4 ARE BRECCIAS WHOSE
ELEMENTS ARE CEMENTED BY GREEN CLAY, SAME LITHOLOGY
AS CORE 78;
Phenocrysts: OLIVINE
Size(mm): .5-2
PLAGIOCLASE
Size(mm): TO 2
Replacement: CLAY MINERALS
IN VEINLETS;
Leg : 83 Top/Bottom Interval(mm): 0/1490 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 907.49
Core: 79 Top of Core Depth (m) : 904.50
Sect: 2 Top of Section Depth(m): 906.00
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1A (2-7), 1B (9-15), 1C (17-21), 1D (22-32),
2 (36-40), 3A (42-67), 3B (70-83), 4 (85-92),
5 (96-109), 6 (111-115), 7 (116-120), 8 (121-129),
9 (131-135), 10 (137-147);
Texture : APHYRIC TO SPARSELY PHYRIC, MEDIUM GRAINED,
NO CHILLED MARGINS OR BRECCIATED MATERIAL TO BE
OBSERVED;
Structure : MANY VEINS AND VEINLETS FILLED WITH DARK GREEN CLAYS
AND SOMETIMES WHITE MINERALS, SULFIDES ARE
WIDESPREAD, PCE 3A HAS A COMPOSITE VEIN WHICH RANGES
UP TO 5 MM WITH DARK GREEN CLAYS + WHITE MINERALS +
SULFIDES, PCE 5 HAS A HORIZONTAL VEIN OF 3 MM
FILLED WITH DARK MATERIAL AND VEINS UP TO 5 MM IN
WIDTH, FRACTURE STATISTICS ARE HORIZONTAL (7)
OBLIQUE (9) AND VERTICAL (3);
Alteration : MOD;
Comments : GREYISH GREEN, A CONTINUATION OF SECION 1;
Replacement: CLAY MINERALS
VEINS;
SULFIDES
VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 909.00
Core: 79 Top of Core Depth (m) : 904.50
Sect: 3 Top of Section Depth(m): 907.50
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1A (2-7), 1B (10-18), 2 (21-27), 3 (29-36),
4A (38-52), 4B (53-56), 4C (56-62), 5 (64-75),
6 (77-93), 7 (96-105), 8 (106-117), 9 (120-124),
10 (126-134), 11 (136-141), 12 (143-147);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE GRAINED,
GRAIN SIZE GETTING PROGRESSIVELY FINER FROM PCE 3
TO PCE 8, NO CHILLED MARGINS + NO BRECCIATION
CONTINUING FROM SECTION 2;
Structure : HEAVILY VEINED BY DARK GREEN CLAYS + WHITE MATERIAL
+ PYRITE, EPIDOTE OCCURRING IN VEIN ON PCE 12,
FRACTURE STATISTICS ARE HORIZONTAL (6) OBLIQUE (5)
VERTICAL (8) OF 50 CM + AVG THICKNESS OF 2 MM;
Alteration : MOD;
Comments : GREYISH GREEN;
Phenocrysts: OLIVINE
Size(mm): <.5
PLAGIOCLASE
Size(mm): <2
Replacement: CLAY MINERALS
IN VEINS;
EPIDOTE
IN PCE 12 OCCURRING IN VEINS;
PYRITE
DISSEMINATED THROUGHOUT ROCK IN PCES 10-12;
Leg : 83 Top/Bottom Interval(mm): 0/1310 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 911.31
Core: 80 Top of Core Depth (m) : 910.00
Sect: 1 Top of Section Depth(m): 910.00
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-13), 2 (15-26), 3A (33-36), 3B (28-31),
3C (35-43), 4 (45-60), 5 (62-74), 6 (76-87),
7A (90-102), 7B (102-116), 7C (118-122),
7D (123-130);
Texture : SPARSELY PHYRIC, FINE GRAINED;
Structure : PCE 4 IS RUBBLE + VEIN FRAGMENTS, PCE 3A HAS VEIN
FRAGMENT WITH CALCITE + PYRITE + CLAY, HIGHLY
FRACTURED WITH FRACTURES FILLED WITH GREEN CLAY +
CALCITE + PYRITE + QUARTZ + MINOR SPHALERITE
(IN ORDER OF ABUNDANCE), PCES 2 + 6 + 7 ARE HIGHLY
FRACTURED, PCE 7C HAS BROKEN SURFACES, PCE 3C
CONTAINS MINOR SPHALERITE + PYRITE + GREEN CLAY IN
VEIN, PCE 5 HAS FAT CALCITE VEIN, CRACKS HAVE AVG
WIDTH OF 2 MM FILLED WITH CLAY EXCEPT FOR A FEW HAVE
FAT CALCITE VEINS, CRACK STATISTICS ARE HORIZONTAL
(21) OBLIQUE (10) VERTICAL (46 CM);
Alteration : MOD;
Comments : FAIRLY UNIFORM THROUGHOUT WITH NO CONTACTS, PCE 7C
HAS BROKEN SURFACES, ROCKS HAVE OVERALL PALE
GREENISH GREY COLOR, PCE 5 HAS LARGE (1 CM) PYRITE
CRYSTAL;
Replacement: CLAY MINERALS
IN VEINS;
CALCITE
IN VEINS, FAT CALCITE VEIN IN PCE 5;
PYRITE
IN VEINS, LARGE PYRITE CRYSTAL (1 CM) IN PCE 5;
QUARTZ
IN FRACTURES;
SPHALERITE
MINOR SPHALERITE IN FRACTURES;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 913.00
Core: 80 Top of Core Depth (m) : 910.00
Sect: 2 Top of Section Depth(m): 911.50
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-35), 2 (37-46), 3 (48-60), 4 (62-72),
5 (74-81), 6 (83-91), 7 (92-99), 8 (101-109),
9 (111-116), 10 (118-124), 11 (126-137),
12 (140-147);
Texture : SPARSELY PHYRIC, FINE GRAINED, BRECCIATED
HYALOCLASTITE + PILLOW FRAGMENTS, PCES 6 + 7 + 8 +
11 + 12 CONSIST OF BRECCIATED HYALOCLASTITE + FINE
GRAINED BASALT FRAGMENTS + BLUISH GREEN CLAY +
PYRITE + CALCITE + LARGE CRYSTALS OF PYRITE OF UP TO
1 CM, PCES 7 + 10 HAVE CHILLED PILLOW MARGINS;
Structure : PCES 2 + 3 ARE BROKEN INTO PIECES + HAVE 4 CM WIDE
CALCITE VEINS WITH GREEN CLAY, PCE 4 HAS SPHALERITE
IN VEIN, VEINS WITH 30 CM BRECCIA HAVE STATISTICS OF
VERTICAL 35 CM (3) HORIZONTAL (8) OBLIQUE (11) AND
AN AVG WIDTH OF 1 MM NOT INCLUDING BRECCIA;
Alteration : MOD
INTERVAL (0-81) + (110-116) CM;
EXT
INTERVAL (81-110) CM;
FRESH
INTERVAL (116-150) CM;
Replacement: PYRITE
SPHALERITE
ON PCE 4 VEIN;
CALCITE
CALCITE VEINS;
CLAY MINERALS
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 914.50
Core: 80 Top of Core Depth (m) : 910.00
Sect: 3 Top of Section Depth(m): 913.00
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-12), 2 (15-27), 3 (30-43), 4A (46-52),
4B (52-59), 5 (62-70), 6 (73-80), 7 (82-91),
8A (92-101), 8B (103-111), 8C (113-117),
8D (119-122), 8E (123-132), 8F (133-138),
8G (141-145);
Texture : SPARSELY PHYRIC, UPPER HALF OF SECTION (TO 84 CM)
BRECCIATED, PILLOW MARGINS, VERY FINE GRAINED, MANY
VERY FINE GRAINED PILLOW RIM PIECES IN BRECCIATED
MATERIAL;
Structure : HIGHLY VEINED, VEINS ARE FILLED WITH BLUISH
GREEN CLAY.MINS, PCE 8A HAS A VERTICAL VEIN FILLED
WITH WHITE MATERIAL, SULFIDES OCCASIONALLY IN VEINS,
FRACTURE STATISTICS FOR PCES (7-8G) ARE OBLIQUE (9)
HORIZONTAL (10) VERTICAL (45 CM) WITH AVG WIDTH OF
1 MM (CONTINUING FROM SECTION 2);
Alteration : MOD;
Comments : GREYISH;
Replacement: CLAY MINERALS
VEINS FILLED WITH BLUISH GREEN CLAY.MINS;
SULFIDES
DISSEMINATED THROUGHOUT ROCKS AND OCCASIONALLY IN
VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/ 570 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 915.07
Core: 80 Top of Core Depth (m) : 910.00
Sect: 4 Top of Section Depth(m): 914.50
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1A (2-10), 1B (11-31), 1C (33-41), 2 (42-56);
Texture : APHYRIC TO PHYRIC, VERY FINE GRAINED, PCE 1A
BRECCIATED, CHILLED PILLOW MARGINS ON PCE 1B AND
PCE 2;
Structure : HIGHLY FRACTURED, VEINS FILLED WITH BLUISH GREEN
CLAY.MINS, SULFIDES THROUGHOUT ROCKS, FRACTURES
HAVE AVG WIDTH OF 1 MM WITH VERTICAL (25 CM)
HORIZONTAL (4) OBLIQUE (4) (CONTINUING FROM SECTION
3);
Alteration : MOD
MOD TO EXTENSIVELY FOR INTERVAL (45-54),
YELLOWISH ALTERATION COLORS ON PCE 2 PEBBLES;
Comments : SIMILAR TO CORE 80 SECTION 3;
Replacement: CLAY MINERALS
VEINS FILLED WITH BLUISH GREEN CLAY.MINS;
SULFIDES
SULFIDES DISSEMINATED THROUGHOUT ROCKS;
Leg : 83 Top/Bottom Interval(mm): 0/ 380 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 919.88
Core: 81 Top of Core Depth (m) : 919.50
Sect: 1 Top of Section Depth(m): 919.50
LITHOLOGY: HYALOCLASTITE;
Piece No. : PCES 1 (2-10), 2 (11-23), 3 (25-32), 4 (33-36);
Structure : CALCITE FILLED VEINS WITH QTZ + PYRITE + SPHALERITE;
Alteration : PCE 1 MOD TO EXTENSIVELY, PCES 2-4 EXTENSIVELY,
HYALOCLASTITES ALTERED TO BLUE GREEN CLAY;
Replacement: CLAY MINERALS
SPHALERITE
QUARTZ
PYRITE
CALCITE
Leg : 83 Top/Bottom Interval(mm): 380/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 921.00
Core: 81 Top of Core Depth (m) : 919.50
Sect: 1 Top of Section Depth(m): 919.88
LITHOLOGY: OL MOD PHYRIC PILLOW BASALT;
Piece No. : PCES 5 (37-43), 6 (45-59), 7 (62-67), 8 (70-75),
9 (76-81), 10 (83-91), 11 (92-102), 12 (104-109),
13 (110-118), 14 (121-125), 15 (126-131),
16 (133-140), 17 (142-145);
Texture : MOD PHYRIC, VERY FINE GRAINED, PCE 10 + 16 ARE
CHILLED MARGINS;
Structure : COMMON VEINS OF DARK GREEN CLAY + MINOR QTZ +
CALCITE + MINOR SULFIDES, PCE 9 HAS VERTICAL QTZ
FILLED VEINS, PILLOWS;
Alteration : MOD;
Comments : STAINED YELLOW GREEN COLOR ON PCES 6 + 14 POSSIBLY
EPIDOTE, SECTION DIFFERS FROM CORE 80 BY HAVING
ONLY OL PHENOS;
Phenocrysts: OLIVINE
THIS SECTION DIFFERS FROM CORE 80 BY HAVING ONLY
OL PHENOS;
Replacement: QUARTZ
VEINS;
CLAY MINERALS
VEINS;
CALCITE
VEINS;
SULFIDES
MINOR DISSEMINATED SULFIDES;
EPIDOTE
IDENTIFICATION UNCERTAIN, STAINED YELLOW GREEN
COLOR ON PCES 6 + 14 POSSIBLY EPIDOTE;
Leg : 83 Top/Bottom Interval(mm): 0/1450 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 929.95
Core: 82 Top of Core Depth (m) : 928.50
Sect: 1 Top of Section Depth(m): 928.50
LITHOLOGY: OL MOD PHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (2-7), 2 (9-13), 3 (16-26), 4A (29-41),
4B (42-50), 4C (50-57), 4D (58-62), 4E (63-69),
4F (70-73), 5 (76-88), 6A (90-97), 6B (97-102),
7 (103-110), 8 (112-116), 9 (118-124), 10 (125-131),
11A (132-136), 11B (136-144);
Texture : MOD PHYRIC, FINE TO MEDIUM GRAINED, MEDIUM GRAINED
IN PILLOW INTERIORS AND FINER TOWARDS PILLOW
MARGINS, PCE 6A + 6B HAS PILLOW MARGIN WHERE GLASS
IS ALTERED TO BLUE GREEN CLAYS + CALCITE + QTZ ALSO
DISSEMINATED PYRITE IS COMMON, PCE 8 HAS GLASS
MARGIN + HYALOCLASTIC REGION WITH BLUE GREEN CLAYS
+ CALCITE + QUARTZ;
Structure : PILLOW LAVAS, DARK BLUE GREEN VEINS COMMON
THROUGHOUT AND ARE CUT BY A LATER PHASE OF CALCITE
+ QUARTZ VEINING, PYRITE ASSOCIATED WITH DARK GREEN
BLUE CLAYS MORE THAN CALCITE AND QUARTZ, CRACKS ARE
2 MM WITH HORIZONTAL (4) VERTICAL (6) AND
OBLIQUE (14);
Alteration : MOD
INTERVAL (0-94) + (100-112) + (118-145) CM;
EXT
INTERVAL (94-100) + (112-118) CM;
GLASS ALTERED TO BLUE GREEN CLAYS + CALCITE +
QUARTZ SEE PCE 6A AND 6B, BLUE GREEN VEINING CUT
BY A LATER PHASE OF CALCITE AND QTZ VEINING;
Comments : PALE GREY GREEN;
Phenocrysts: OLIVINE ( 3%)
Size(mm): 2
OL REPLACED BY DARK GREEN CLAYS;
Replacement: CLAY
Minerals Replaced: GLASS, OL
OL PHENOS REPLACED BY DARK GREEN CLAYS;
CALCITE
Minerals Replaced: GLASS
QUARTZ
Minerals Replaced: GLASS
GLASS ALTERED TO BLUE GREEN CLAYS + CALCITE +
QTZ;
PYRITE
DISSEMINATED PYRITE IS COMMON;
CLAY MINERALS
CALCITE
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 931.50
Core: 82 Top of Core Depth (m) : 928.50
Sect: 2 Top of Section Depth(m): 930.00
LITHOLOGY: OL MOD PHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (0-11), 2 (13-19), 3 (21-24), 4 (26-39),
5 (42-52), 6A (53-59), 6B (59-66), 6C (66-73),
6D (74-79), 6E (80-89), 6F (91-96), 6G (96-109),
6H (110-119), 6I (120-127), 7 (128-132),
8 (133-139), 9 (142-149);
Texture : MOD PHYRIC, FINE GRAINED, PCE 4 IS A HYALOCLASTITE,
PCES 6C + 6D + 6E CONTAIN ALTERED GLASSY MARGIN
WHICH APPEARS TO QUENCH ON BOTH SIDES;
Structure : PILLOW LAVAS, ALTERATION MINERAL CHLORITE IN VEINS
PRODUCES GREENISH COLOR, PYRITE OCCURS IN VEINS
AND DISSEMINATED IN BASALT, CRACK STATISTICS ARE
OBLIQUE (12) VERTICAL (11) HORIZONTAL (6);
Alteration : MOD
PCES 6C + 6D + 6E CONTAIN ALTERED GLASSY MARGIN,
PCE 9 CONTAINS ALTERED GLASS, OL ALTERED TO DARK
GREEN MINERAL, ALTERATION CONSISTS OF DARK GREEN
MINERAL PREDOMINANTLY IN VEINS (CHLORITE) + MINOR
WHITE MINERAL POSSIBLY CALCITE + ABUNDANT PYRITE
+ EPIDOTE;
Comments : GREENISH GREY COLOR, CHLORITE IN VEINS PRODUCES
GREENISH COLOR;
Phenocrysts: OLIVINE ( 5%)
Size(mm): TO 3
OL ALTERED TO DARK GREEN MINERAL;
PLAGIOCLASE ( 0%)
PLAG DOES NOT FORM SIGNIFICANT PHENOS PHASE;
Replacement: CLAY
Minerals Replaced: OL
OL ALTERED TO DARK GREEN MINERAL;
CHLORITE
IN VEINS;
EPIDOTE
CALCITE
IDENTIFICATION OF CALCITE UNCERTAIN;
PYRITE
PYRITE OCCURS IN VEINS AND DISSEMINATED IN BASALT;
Leg : 83 Top/Bottom Interval(mm): 0/ 950 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 932.45
Core: 82 Top of Core Depth (m) : 928.50
Sect: 3 Top of Section Depth(m): 931.50
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCES 1 (0-7), 2A (8-14), 2B (9-18), 3A (20-28),
3B (29-33), 4 (35-41), 5 (43-48), 6 (49-52),
7 (54-63), 8 (65-77), 9 (80-82), 10 (85-91);
Texture : MOD PHYRIC, VERY FINE GRAINED, PILLOW INTERIOR
PREDOMINANT, PCES 1 + 2 ARE BRECCIATED;
Structure : PILLOW INTERIOR, ALTERATION CONSISTS OF DARK GREEN
MINERAL COMMON IN VEINS, CRACKS + VEIN STATISTICS
OBLIQUE (2) VERTICAL (3) HORIZONTAL (5);
Alteration : MOD
ALTERATION CONSISTS OF DARK GREEN MINERAL COMMON
IN VEINS, ALSO SOME WHITE ALTERATION MINERALS ARE
PRESENT, OL ALTERED TO DARK GREEN MINERAL;
Comments : GREENISH GREY, GREEN COLOR PRODUCED BY CHLORITE
ALTERATION MINERAL;
Phenocrysts: OLIVINE ( 4-5%)
Size(mm): TO 2
OL ALTERED TO DARK GREEN MINERAL;
PLAGIOCLASE ( 0%)
PLAG DOES NOT FORM SIGNIFICANT PHENOS PHASE;
Replacement: CHLORITE
DARK GREEN MINERAL IN VEINS;
UNIDENTIFIED
WHITE ALTERATION MINERALS OF ONE CLOUDY WHITE +
ONE COLORLESS + ONE FORMING ELONGATE CRYSTALS;
PYRITE
ASSOCIATED WITH WHITE AND GREEN MINERALS;
Leg : 83 Top/Bottom Interval(mm): 0/1480 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 938.98
Core: 83 Top of Core Depth (m) : 937.50
Sect: 1 Top of Section Depth(m): 937.50
LITHOLOGY: OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 1 (3-7), 2A (10-18), 2B (18-27), 2C (28-36),
2D (36-47), 3 (49-67), 4 (69-79), 5A (80-89),
5B (88-96), 5C (96-101), 6 (104-108), 7 (110-115),
8 (117-122), 9 (124-134), 10 (137-148);
Texture : SPARSELY TO MOD PHYRIC, FINE GRAINED;
Structure : VEINS IN PCES 2-5, CRACKS + VEIN STATISTICS ARE
OBLIQUE (15) HORIZONTAL (4) VERTICAL (7), SEE
ALTERATION FOR ADDITIONAL INFORMATION ON VEINS;
Alteration : MOD
OL ALTERED TO DARK GREEN MINERAL, ALTERATION
CONSISTS OF DARK GREEN MINERAL (CHLORITE) COMMON
IN VEINS AND DISSEMINATED IN THE ROCK, PCES 2-5
HAVE WHITE SECONDARY MINERALS IN VEINS,
ZONATION OCCURS AROUND THESE VEINS WHICH CONSISTS
OF DARK GREY GREEN MINERAL NEXT TO WHITE FOLLOWED
BY A PALER GREY GREEN ZONE, PYRITE OCCURS
BOTH IN THE VEINS AND DISSEMINATED IN THE ROCK,
SPHALERITE OCCURS IN THE VEINS OF WHITE, YELLOW
COLORATION ON OUTER SURFACE;
Comments : GREYISH GREEN;
Phenocrysts: OLIVINE ( 3-4%)
Size(mm): TO 2
OL ALTERED TO DARK GREEN MINERAL;
PLAGIOCLASE ( 0%)
PLAG DOES NOT APPEAR TO BE A SIGNIFICANT PHENOS
MINERAL;
Replacement: CHLORITE
DARK GREEN MINERAL FOUND IN VEINS;
PYRITE
IN VEINS AND DISSEMINATED IN THE ROCK;
SPHALERITE
OCCURS IN VEINS OF WHITE;
Leg : 83 Top/Bottom Interval(mm): 0/ 350 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 939.35
Core: 83 Top of Core Depth (m) : 937.50
Sect: 2 Top of Section Depth(m): 939.00
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-9), 2 (11-15), 3 (16-24), 4 (26-33);
Texture : MOD PHYRIC, FINE GRAINED;
Structure : VEINS, SEE ALTERATION FOR ADDITIONAL INFORMATION ON
VEINS, CRACKS RANGE FROM .5 TO 1 MM WITH
VERTICAL (3) HORIZONTAL (1) OBLIQUE (4);
Alteration : MOD
VEINS CONTAIN DARK BLUE GREEN CLAYS WITH VERY
LIMITED AMOUNT OF WHITE MATERIAL, PYRITE COMMON
WITH SPHALERITE IN VEIN AREAS, YELLOW ALTERATION
TO OUTER SURFACES OF ALL SAMPLES;
Comments : A CONTINUATION OF CORE 83 SECTION 1, GREYISH GREEN;
Replacement: PYRITE
PYRITE COMMON WITH SPHALERITE IN VEIN AREAS;
SPHALERITE
PYRITE COMMON WITH SPHALERITE IN VEIN AREAS;
Leg : 83 Top/Bottom Interval(mm): 0/1490 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 947.99
Core: 84 Top of Core Depth (m) : 946.50
Sect: 1 Top of Section Depth(m): 946.50
LITHOLOGY: OL-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1A (2-11), 1B (13-18), 1C (19-26), 1D (27-36),
2 (38-44), 3 (46-50), 4A (52-71), 4B (72-79),
4C (79-87), 4D (86-93), 5 (95-101), 6 (104-107),
7 (110-114), 8 (116-119), 9 (122-128), 10 (130-138),
11 (141-147);
Texture : MOD PHYRIC, VERY FINE GRAINED, MINERAL INTERGROWTHS
OF WHITE AND GREEN MINERALS IN SPHERICAL TO
SUBSPHERICAL SHAPES RANGING IN SIZE FROM 1.3 MM TO
ABOUT 3 MM MAY BE ALTERED GLOMEROPHYRIC AGGREGATES
CONTAINING EPIDOTE + QTZ + POSSIBLY CALCITE, PCES 1A
+ 1B HAVE A WELL CRYSTALIZED VEIN WHERE SOME OF THE
XTLS HAVE WELL DEVELOPED CRYSTAL FACES;
Structure : VEINS, FOR MORE INFORMATION ON VEINS SEE ALTERATION,
CRACKS WITH OBLIQUE (21) HORIZONTAL (12) AND
VERTICAL (0);
Alteration : MOD
OL ALTERED TO DARK GREEN MINERAL, ALTERATION
CONSISTS OF DARK GREEN MINERAL (CHLORITE) IN
VEINS, SEVERAL WHITE SECONDARY MINERALS IN VEINS,
ASSOCIATED WITH WHITE MINERALS ARE PYRITE AND
POSSIBLY EPIDOTE, PYRITE DISSEMINATED THROUGHOUT
BASALT, PCES 1A + 1B HAVE A WELL CRYSTALIZED VEIN,
OCCURRING GENERALLY IN A THIN VEIN-LIKE HABIT IS
A DARK RED NON-CRYSTALLINE APPEARING MINERAL,
MINERAL INTERGROWTHS MAY BE ALTERED
GLOMEROPHYRIC AGGREGATES;
Comments : GREYISH GREEN, THIN SECTION OF UNUSUAL SUBSPHERICAL
INTERGROWTHS;
Phenocrysts: OLIVINE ( 5%)
Size(mm): TO 2
OL ALTERED TO DARK GREEN MINERAL;
PLAGIOCLASE ( 0%)
PLAG IS NOT A SIGNIFICANT PHENOS MINERAL;
Replacement: CHLORITE
DARK GREEN MINERAL OCCURRING IN VEINS;
PYRITE
PYRITE OCCURS DISSEMINATED THROUGHOUT BASALT;
OTHER
WHITE SECONDARY MINERALS OCCUR IN VEINS,
ASSOCIATED WITH PYRITE AND EPIDOTE;
CALCITE
IDENTIFICATION UNCERTAIN FOR CALCITE;
EPIDOTE
Leg : 83 Top/Bottom Interval(mm): 0/1040 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 949.04
Core: 84 Top of Core Depth (m) : 946.50
Sect: 2 Top of Section Depth(m): 948.00
LITHOLOGY: OL-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (3-6), 2 (8-12), 3 (15-19), 4 (22-26),
5 (27-34), 6 (37-44), 7 (45-49), 8 (53-64),
9 (67-70), 10 (73-78), 11 (80-83), 12 (85-91),
13 (92-96), 14 (98-103);
Texture : MOD PHYRIC, VERY FINE GRAINED, PCES 5-7 HAVE
HYALOCLASTIC BRECCIAS WHICH ARE RICH IN
DISSEMINATED PYRITE OF CRYSTAL DIAMETER 7-8 MM
+ GREEN MINERALS + QTZ + CALCITE, PCE 11 HAS GLASS
MARGIN;
Structure : VEINS, SEE ALTERATION FOR MORE INFORMATION ON VEINS;
Alteration : MOD
OL ALTERED TO DARK GREEN MINERALS, GLASS MARGIN ON
PCE 11 ALTERED TO GREEN AND WHITE MINERALS, PCE 6
HAS YELLOW DISCOLORATION IN VEINS, SPALERITE IS
IN SOME VEINS, PCE 8 HAS LARGE (TO 1 CM) ALTERED
GLOMEROCRYSTS OF PLAG (QUESTIONALBLE), WHITE VEINS
(QTZ CRYSTALS) WITH EARLIER PHASE OF GREEN VEINS;
Comments : GREY, PCE 6 HAS YELLOW DISCOLORATION IN VEINS;
Phenocrysts: PLAGIOCLASE
Size(mm): TO 10
ID UNCERTAIN, PCE 8 HAS ALTERED GLOMEROCRYSTS
POSSIBLY PLAG;
OLIVINE ( 4-5%)
Size(mm): 2
OL ALTERED TO DARK GREEN MINERALS AND CAN BE
ASSOCIATED WITH PYRITE AS CORE OR RIMS TO PHENOS;
CLINOPYROXENE
OCCASIONAL PHENOS ON DRILLED SURFACES;
Replacement: PYRITE
OL ASSOCIATED WITH PYRITE AS CORE OR RIMS TO
PHENOS;
SPHALERITE
IN SOME VEINS;
QUARTZ
WHITE VEINS (QTZ CRYSTALS) WITH EARLIER PHASE OF
OF GREEN VEINS;
CALCITE
OTHER
GREEN MINERALS, HYALOCLASTIC BRECCIAS RICH IN
DISSEMINATED PYRITE WITH GREEN MINERALS + QTZ +
CALCITE;
Leg : 83 Top/Bottom Interval(mm): 1040/1250 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 949.25
Core: 84 Top of Core Depth (m) : 946.50
Sect: 2 Top of Section Depth(m): 949.04
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCES 15 (105-116), 16 (117-124);
Texture : MOD PHYRIC, VERY FINE GRAINED;
Alteration : MOD
OL ALTERED TO GREEN CLAYS SURROUNDED BY A LEACHED
LIGHT GREY BASALT AREA;
Comments : DARK GREY;
Phenocrysts: OLIVINE ( 5%)
Size(mm): 2-3
OL ALTERED TO GREEN CLAYS SURROUNDED BY A LEACHED
LIGHT GREY BASALT AREA;
Replacement: CLAY
OL ALTERED TO GREEN CLAYS;
Leg : 83 Top/Bottom Interval(mm): 0/1340 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 956.84
Core: 85 Top of Core Depth (m) : 955.50
Sect: 1 Top of Section Depth(m): 955.50
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (3-6), 2 (9-16), 3 (17-26), 4 (28-31),
5 (33-37), 6A (41-47), 6B (48-56), 6C (56-63),
6D (63-75), 6E (75-82), 7 (84-92), 8 (95-101),
9 (104-109), 10 (112-114), 11 (117-122),
12 (124-132);
Texture : MOD PHYRIC, FINE TO MEDIUM, FINE GRAINED BASALT
FRAGMENTS + ALTERED HYALOCLASTITE IN PCES 6B-6D,
PCES 7 + 8 MOSTLY BRECCIATED WITH ABUNDANT WHITE +
OLIVE GREEN MINERALS + DARK GREEN CLAY.MIN + PYRITE;
Structure : HIGHLY FRACTURED, PYRITE DISSEMINATED IN ROCKS AND
VEINS, PYRITE + CHLORITE + WHITE MINERAL + OLIVE
GREEN MINERAL IN VEINS OF PCES 1-3 + 6C-10,
FRACTURED SURFACE COATED WITH CHLORITE ON PCES 9 +
12, CRACKS ARE MOSTLY FILLED WITH CHLORITE + COMMON
WHITE MATERIAL + PYRITE, CRACKS HAVE AN AVG THICKNES
OF 2 MM WITH HORIZONTAL (6) OBLIQUE (16) AND
VERTICAL (43 CM);
Alteration : MOD
INTERVAL (0-27) + (34-46) + (70-87) +
(100-134) CM;
EXT
INTERVAL (27-34) + (46-70) + (87-100) CM;
ALTERED HYALOCLASTITE IN PCES 6B-6D;
Phenocrysts: OLIVINE
Size(mm): 1
PLAGIOCLASE
Size(mm): <1
CLINOPYROXENE
Size(mm): 1-2
RARE
Replacement: CHLORITE
IN VEINS IN PCES 1-3 + 6C-10, FRACTURED SURFACE
COATED WITH CHLORITE IN PCES 9 + 12, CRACKS;
PYRITE
CRACKS, IN VEINS OF PCES 1-3 + 6C-10, FOUND IN
BRECCIATED PCES 7 + 8, DISSEMINATED IN ROCKS AND
VEINS;
OTHER
WHITE + OLIVE GREEN MINERALS IN BRECCIATED PCES
7 + 8 AND VEINS OF PCES 1-3 + 6C-10;
EPIDOTE
IDENTIFICATION UNCERTAIN;
PREHNITE
IDENTIFICATION UNCERTAIN;
CLAY MINERALS
DARK GREEN CLAY MINERALS FOUND IN BRECCIATED PCES
7 + 8;
Leg : 83 Top/Bottom Interval(mm): 0/ 590 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 957.59
Core: 85 Top of Core Depth (m) : 955.50
Sect: 2 Top of Section Depth(m): 957.00
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1A (3-12), 1B (12-20), 1C (21-29), 2 (31-58);
Texture : MOD PHYRIC, FINE GRAINED, PCE 2 HAS BRECCIA AND A
CHILLED MARGIN;
Alteration : MOD;
Comments : SAME AS SECTION 1 GREYISH;
Leg : 83 Top/Bottom Interval(mm): 590/1440 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 958.44
Core: 85 Top of Core Depth (m) : 955.50
Sect: 2 Top of Section Depth(m): 957.59
LITHOLOGY: APHYRIC TO OL-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 3A (59-66), 3B (67-72), 3C (73-79), 4A (81-88),
4B (89-105), 4C (106-113), 4D (114-117),
5 (120-131), 6 (134-143);
Texture : APHYRIC TO SPARSELY PHYRIC, MEDIUM GRAINED;
Structure : THIN VEINS < .5 MM FILLED BY PROBABLE CHLORITE AND
PYRITE, THICKER VEINS UP TO 3 MM FILLED BY
CHLORITE + PYRITE + WHITE MINERAL, FRACTURES OF
AVG WIDTH LESS THAN OR EQUAL TO 1 MM WITH
HORIZONTAL (3) OBLIQUE (5) AND VERTICAL 41 CM WITH
DARK GREEN CLAY + MINOR WHITE MINERALS;
Alteration : MOD;
Comments : GREYISH, YELLOWISH GREEN COLORATION IN SOME OF THE
PARTS OF PCE 2 (PLUS PROBABLE TALC);
Replacement: PYRITE
PYRITE IS DISSEMINATED IN WHOLE ROCK, IN VEINS;
EPIDOTE
YELLOWISH GREEN COLORATION IS EPIDOTE COLOR;
OTHER
WHITE MINERALS IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1100 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 959.60
Core: 85 Top of Core Depth (m) : 955.50
Sect: 3 Top of Section Depth(m): 958.50
LITHOLOGY: OL-PLAG-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-6), 2 (8-11), 3A (13-25), 3B (25-30),
4 (33-41), 5 (44-52), 6 (55-58), 7 (60-66),
8 (69-78), 9 (80-86), 10 (88-96), 11 (98-109);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED, UNIFORM TEXTURE
THROUGHOUT;
Structure : MASSIVE, FEW FRACTURES FILLED WITH DARK GREEN
CLAY.MINS + MINOR WHITE MINERAL, COMMON DISSEMINATED
SULFIDES THROUGHOUT ROCK AND VEINS, CRACKS HAVE AVG
WIDTH LESS THAN OR EQUAL TO 1 MM WITH VERTICAL
(17 CM) HORIZONTAL (1) AND OBLIQUE (3);
Alteration : MOD;
Phenocrysts: CLINOPYROXENE
MINOR CPX;
PLAGIOCLASE
IDENTIFICATION UNCERTAIN FOR PLAG;
Replacement: CLAY MINERALS
IN FRACTURES;
SULFIDES
DISSEMINATED SULFIDES THROUGHOUT ROCK AND VEINS;
OTHER
MINOR WHITE MINERAL IN FRACTURES;
Leg : 83 Top/Bottom Interval(mm): 0/ 450 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 964.95
Core: 86 Top of Core Depth (m) : 964.50
Sect: 1 Top of Section Depth(m): 964.50
LITHOLOGY: PLAG-OL-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-9), 2 (11-23), 3 (25-31), 4 (33-45);
Texture : FINE GRAINED, SPARSELY PHYRIC, PCE 1 IS VERY FINE
GRAINED AND HAS A CHILLED MARGIN, PCE 4 IS VERY FINE
GRAINED AND BRECCIATED;
Structure : PCES 2 + 3 HAVE ABUNDANT DARK GREEN CLAY VEINS;
Alteration : MOD;
Comments : PCE 1 IS DARK GREY, PCES 2 AND 3 ARE VERY GREENISH
GREY;
Replacement: CALCITE
VEINS (PCE 2);
SULFIDES
COMMON DISSEMINATED SULFIDES;
CLAY MINERALS
OTHER
WHITE MINERAL IN VEINS (PCE 2);
Leg : 83 Top/Bottom Interval(mm): 0/1490 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 968.49
Core: 87 Top of Core Depth (m) : 967.00
Sect: 1 Top of Section Depth(m): 967.00
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-6), 2A (8-19), 2B (20-25), 2C (26-32),
2D (33-40), 3 (43-47), 4 (49-54), 5 (56-62),
6A (63-72), 6B (73-81), 6C (82-89), 6D (90-95),
7 (96-102), 8 (104-109), 9 (110-114), 10A (116-120),
10B (121-126), 11 (129-137), 12 (140-148);
Texture : APHYRIC TO SPARSELY PHYRIC, TEXTURE COARSENS FROM
VERY FINE TO FINE TOWARD PCES 6A-6D, PCES 9 + 10
ARE MEDIUM GRAINED AND REPRESENT A COOLING UNIT
WHICH MAY OR MAY NOT INCLUDE PCES 11 AND 12 AS THE
FINER GRAINED COOLING MARGIN, NO QUENCH MARGINS
OBSERVED, PCES 1-2D ARE CATACLASITES;
Structure : FRACTURES ARE NUMEROUS, WHITE VEIN MINERALS OCCUR
BOTH IN THE CENTERS OF CHLORITE VEINS AND AS DISTINC
VEINS FROM THE CHLORITE, CHALPYR PRESENT IN WHITE
VEINS IN ADDITION TO A YELLOWISH BROWN ACICULAR
RADIATE MINERAL, VEIN STATISTICS (ROUGH ESTIMATE DUE
TO NUMEROUS FRACTURES AND ANASTOMOSING) ARE OBLIQUE
(10) HORIZONTAL (10) AND VERTICAL (12) WITH AVG SIZE
OF 1-2 MM;
Alteration : MOD
OL ALTERED TO DARK MINERAL PROBABLY CHLORITE,
ALTERATION CONSISTS OF CHLORITE IN VEINS AND
PROBABLY THROUGH MUCH OF ROCK;
Comments : GREYISH GREEN, PCES 1-2D ARE CATACLASITES, PCES 1-8
AND 9-10 ARE COOLING UNITS;
Phenocrysts: OLIVINE ( 2%)
Size(mm): TO 2
OL ALTERED TO DARK MINERAL PROBABLY CHLORITE;
CLINOPYROXENE
PCE 6B HAS OPHITIC CPX;
Replacement: CHLORITE
IN VEINS;
PYRITE
PYRITE OCCURS IN WHITE VEINS AND DISSEMINATED IN
THE ROCK;
CHALCOPYRITE
Leg : 83 Top/Bottom Interval(mm): 0/1130 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 969.63
Core: 87 Top of Core Depth (m) : 967.00
Sect: 2 Top of Section Depth(m): 968.50
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1A (0-12), 1B (12-22), 2A (25-28), 2B (29-40),
2C (41-49), 3 (50-56), 4 (57-63), 5 (64-69),
6 (70-79), 7 (81-89), 8 (91-99), 9 (103-112);
Texture : APHYRIC TO SPARSELY PHYRIC, PCES 6 + 7 ARE VERY
FINE GRAINED SPARSELY PHYRIC AND A CHILLED MARGIN,
COARSE UNITS OF PCES 1A-5 ARE UNIFORM APHYRIC
BASALT PROBABLY CENTER TO DIKE WITH PCES 6 + 7
ACTING AS A CHILLED MARGIN, PCES 8-9 ARE A COARSE
GRAINED SPARSELY PHYRIC UNIT WITH A FINER GRAINED
UPPER CONTACT IN PCES 6 + 7;
Structure : IN ALL SAMPLES LIMITED VEINING FILLED WITH QTZ +
TALC + CHLORITE + PYRITE + CHALCOPYRITE, PCE 1A
HAS YELLOW AND BROWN VEIN MATERIAL ASSOCIATED WITH
WHITE CALCITE AND QUARTZ, RELATIONSHIPS UNCLEAR
BETWEEN WHITE AND GREEN CLAY VEINS WHEN TOGETHER
WHITE FORMS CENTERS, CRACKS WITH VERTICAL (5)
HORIZONTAL (3) AND OBLIQUE (6);
Alteration : MOD;
Comments : UNIFORM GREYISH GREEN;
Phenocrysts: OLIVINE ( 2%)
Size(mm): 2
OL EVIDENT MAINLY IN FINE GRAINED AREAS OF PCES
6 AND 7;
Replacement: PYRITE
IN VEINS;
CHALCOPYRITE
IN VEINS;
QUARTZ
IN VEINS;
TALC
IN VEINS;
CHLORITE
IDENTIFICATION UNCERTAIN;
Leg : 83 Top/Bottom Interval(mm): 0/1460 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 977.96
Core: 88 Top of Core Depth (m) : 976.50
Sect: 1 Top of Section Depth(m): 976.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (0-9), 2A (11-19), 2B (20-29), 2C (30-41),
2D (41-51), 3 (52-62), 4A (63-76), 4B (76-82),
4C (82-93), 4D (94-103), 4E (105-120),
5 (121-127), 6 (129-132), 7 (134-139), 8 (140-144);
Texture : APHYRIC, PCE 1 IS VERY FINE GRAINED WITH AN ALTERED
CHILLED MARGIN, PCES 2-8 ARE MEDIUM GRAINED;
Structure : VEINS WITH OBLIQUE (24) HORIZONTAL (6) VERTICAL (2),
SEE ALTERATION FOR ADDITIONAL INFORMATION ON VEINS;
Alteration : MOD
ALTERATION INCLUDES DARK VEIN MATERIAL (CHLORITE)
+ WHITE VEIN MATERIAL (AGGREGATE OF SEVERAL WHITE
MINERALS SUCH AS CALCITE AND QTZ), WHITE VEINS
ALSO HAVE PYRITE AND A YELLOWISH BROWN
CRYSTALLINE MATERIAL, PCE 1 HAS ALTERED CHILLED
MARGIN;
Comments : GREENISH GREY, DIFFICULT TO DETERMINE WHETHER PCE 1
IS INCLUDED WITH THE REMAINDER OF THE SECTION
ALTHOUGH ALL MAY EQUAL A COOLING UNIT;
Replacement: CALCITE
QUARTZ
CHLORITE
PYRITE
OTHER
IDENTIFICATION UNCERTAIN FOR ONE WHITE MINERAL IN
VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1470 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 986.97
Core: 89 Top of Core Depth (m) : 985.50
Sect: 1 Top of Section Depth(m): 985.50
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (3-8), 2A (9-17), 2B (18-24), 2C (24-29),
3 (31-34), 4 (38-43), 5 (45-51), 6 (53-61),
7 (63-69), 8 (71-75), 9 (77-82), 10A (85-92),
10B (93-104), 10C (105-110), 11 (112-124),
12 (125-131), 13 (132-139), 14 (140-146);
Texture : MOD PHYRIC, FINE GRAINED, NO EVIDENT CHILLED MARGINS
EXCEPT PERHAPS IN PCES 6 + 7 WHERE ALTERATION
OBSCURES POSSIBLE CHILLED MARGIN FEATURES,
PCES 2A-2B HAVE A BRECCIATED APPEARANCE WHOSE
ELEMENTS ARE COMPOSED BY THE SAME MATERIAL AS THE
OTHER PIECES, PCES 4 + 5 AND PCES 11-14 SEEM TO BE
VOLCANIC BRECCIAS AND ALTERED CEMENT OF THESE
BRECCIAS, CEMENT IS COMPOSED BY WHITE PRISMATIC
MINERAL (TO 8MM LONG) + EPIDOTE (TO 5 MM LONG
CRYSTALS) + PYRITE (TO 5 MM IN DIAMETER) + DARK
GREEN MINERAL (CHLORITE QUESTIONABLE);
Structure : VEINS, GENERAL APPEARANCE OF THIS SECTION IS THAT
OF A PILLOW OR BRECCIA UNIT, FRACTURES WITH
HORIZONTAL (4) OBLIQUE (10) AND VERTICAL (17 CM);
Alteration : MOD
ALTERATION OBSCURES POSSIBLE CHILLED MARGIN
FEATURES, PCES 4 + 5 AND PCES 11-14 HAVE ALTERED
CEMENT OF THE BRECCIA, WHITE MINERAL + EPIDOTE +
PYRITE + DARK GREEN MINERAL FILL THE VEINS, THE
FOLLOWING ARE CHRONOLOGIES OF ALTERATION CHLORITE
TO EPIDOTE TO WHITE MINERAL OR EPIDOTE TO WHITE
MINERAL;
Comments : GENERAL APPEARANCE OF THIS SECTION IS THOSE OF A
PILLOW OR BRECCIA UNIT;
Phenocrysts: OLIVINE
Size(mm): .5-4
OL REPLACED BY DARK GREEN MINERAL;
PLAGIOCLASE
Size(mm): TO 5
PLAG REPLACED BY SECONDARY MINERALS;
Replacement: EPIDOTE
IN VEINS AND CEMENT;
PYRITE
IN VEINS AND CEMENT AND IS DISSEMINATED IN THE
WHOLE ROCK;
CHLORITE
DARK GREEN MINERAL WHOSE IDENTIFICATION IS
QUESTIONED, OL REPLACED BY DARK GREEN MINERAL,
DARK GREEN MINERAL PRESENT IN VEINS AND CEMENT;
UNIDENTIFIED
WHITE MINERAL IN VEINS AND CEMENT;
Leg : 83 Top/Bottom Interval(mm): 100/1000 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 988.00
Core: 89 Top of Core Depth (m) : 985.50
Sect: 2 Top of Section Depth(m): 987.10
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 2 (11-16), 3 (18-24), 4 (25-34), 5 (36-41),
6 (43-50), 7 (51-58), 8 (60-66), 9 (72-77),
10 (80-86), 11 (88-91), 12 (92-99);
Texture : APHYRIC, FINE GRAINED, HOMOGENEOUS TEXTURE, EVIDENCE
OF CHILLING ON PCE 9;
Structure : VEINS, PCES 7-8 AND PCES 10-12 HAVE DARK GREEN
CHLORITE AREAS PERMEATING THE GROUNDMASS GENERALLY
ASSOCIATED WITH MINOR FRACTURING WHICH CAN BE PARTLY
FILLED WITH WHITE MINERALS, PYRITE + CHALCOPYRITE
AND SPHALERITE IN SOME VEINS, APPARENTLY A PILLOW
SEQUENCE, CRACKS WITH A VERTICAL (4) HORIZONTAL (5)
AND OBLIQUE (6);
Alteration : MOD;
Comments : GREYISH GREEN;
Replacement: PYRITE
IN VEINS;
CHALCOPYRITE
IN VEINS;
SPHALERITE
IN VEINS;
CHLORITE
PCES 7-8 AND PCES 10-12 HAVE DARK GREEN CHLORITE
PERMEATING THE GROUNDMASS GENERALLY ASSOCIATED
WITH MINOR FRACTURING;
Leg : 83 Top/Bottom Interval(mm): 0/1200 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 988.20
Core: 89 Top of Core Depth (m) : 985.50
Sect: 2 Top of Section Depth(m): 987.00
LITHOLOGY: OL-PLAG SPARSELY TO MOD PHYRIC;
Piece No. : PCES 1 (1-10), 13 (101-107), 14 (109-112),
15 (114-118);
Texture : SPARSELY TO MOD PHYRIC, PCE 1 HAS CHILLED MARGIN
AREA WITH GLASS ALTERED WITH DARK GREEN MINERAL
ADJACENT TO FINE GRAINED BASALT, PCES 13-15 ARE FINE
GRAINED BUT NOT CHILLED;
Alteration : MOD
PCE 1 IS A CHILLED MARGIN AREA (WITH GLASS ALTERED
WITH DARK GREEN ADJACENT TO FINE GRAINED BASALT AN
THEN VERY DARK GREEN CHLORITE, CENTER IS PALE
YELLOW GREEN EPIDOTE, WHITE MATERIAL (QTZ + TALC)
APPEARS TO BE LATEST PHASE;
Phenocrysts: OLIVINE ( 3%)
Size(mm): 2
OL PHENOS REPLACED BY DARK GREEN CHLORITE;
Replacement: CHLORITE
Size(mm): O
Minerals Replaced: L
OL PHENOS REPLACED BY DARK GREEN CHLORITE;
EPIDOTE
QUARTZ
TALC
SEE ALTERATION;
Leg : 83 Top/Bottom Interval(mm): 0/1470 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 995.97
Core: 90 Top of Core Depth (m) : 994.50
Sect: 1 Top of Section Depth(m): 994.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-6), 2 (7-14), 3 (16-23), 4 (24-33),
5 (35-38), 6 (39-43), 7 (44-49), 8A (50-54),
8B (54-59), 9 (60-66), 10 (68-71), 11 (72-81),
12 (83-89), 13 (90-93), 14 (95-99), 15 (100-104),
16A (105-109), 16B (110-113), 16C (113-119),
17 (121-124), 18 (126-130), 19 (131-135),
20 (136-140), 21 (142-145);
Texture : APHYRIC, FINE GRAINED, PCES 5-19 ARE BRECCIAS, IN
PCES 5-8A AND PCES 12-19 ELEMENTS ARE APHYRIC
BASALT, IN PCES 8B-11 THE ELEMENTS ARE COMPOSED WITH
A LIGHT GREEN VERY VERY FINE GRAINED MATERIAL
PERHAPS AN ALTERED VERY FINE GRAINED BASALT,
ACICULAR CRYSTALS OF EPIDOTE IN PCES 9 AND 16, VERY
RARE AND TINY CRYSTALS (< 1 MM) OF PYRITE IN THE
VEINS;
Structure : NUMEROUS VEINS OCCUR IN THE CEMENT OF THESE BRECCIAS
AND RANGE FROM 1 TO 15 MM IN WIDTH, VEINS MAINLY
COMPOSED OF EPIDOTE + WHITE MINERALS AND POSSIBLY
CHLORITE, EPIDOTE OCCURS AT THE VEIN WALLS OR MIXED
WITH THE WHITE MINERALS, IN PCES 14 + 13 + 10
ABUNDANT TRANSPARENT COLORLESS PLATY MINERAL IN THE
CENTER OF A THICK VEIN OF 10 MM, VERY RARE AND TINY
CRYSTALS OF PYRITE IN THE VEINS;
Alteration : MOD
PCES 8B-11 HAS ELEMENTS WITH A LIGHT GREEN VERY
VERY FINE GRAINED MATERIAL PERHAPS ALTERED VERY
FINE GRAINED BASALT;
Comments : GREENISH GREY;
Replacement: EPIDOTE
EPIDOTE OCCURS AT THE VEIN WALLS OR MIXED WTIH
WHITE MINERALS IN THE VEINS;
PYRITE
VERY RARE AND TINY CRYSTALS OF PYRITE IN VEINS;
CHLORITE
POSSIBLY IN THE VEINS;
OTHER
WHITE MINERALS IN VEINS;
OTHER
ABUNDANT TRANSPARENT COLORLESS PLATY MINERAL IN
THE CENTER OF THICK 10 MM VEIN IN PCES 14 + 13 +
10;
Leg : 83 Top/Bottom Interval(mm): 0/1470 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 997.47
Core: 90 Top of Core Depth (m) : 994.50
Sect: 2 Top of Section Depth(m): 996.00
LITHOLOGY: APHYRIC BASALT;
CORE 90 SECTION 2 HAS SAME LITHOLOGY AS CORE 90
SECTION 1;
Piece No. : PCES 1 (2-10), 2 (12-16), 3 (17-26), 4 (27-36),
5 (37-45), 6 (47-53), 7 (54-58), 8 (59-66),
9 (69-72), 10 (74-77), 11 (80-88), 12 (92-95),
13 (97-105), 14A (107-116), 14B (117-124),
14C (124-130), 14D (130-134), 14E (134-139),
14F (140-144);
Texture : APHYRIC AND BRECCIATED, ON PCES 1 + 2 + 3 BRECCIA
CONSISTS OF VERY ANGULAR PIECES WHICH FIT TOGETHER,
PCE 6 HAS BRECCIA PATH THROUGH UNBROKEN ROCK
FRAGMENTS, PCE 13 IS UNIFORM MEDIUM GRAINED AND
APHYRIC, BRECCIA CEMENTED MOSTLY BY GREENISH CLAY
MINERAL WITH COMMON EPIDOTE AND SULFIDES;
Structure : PCE 13 IS UNCRACKED WITH ALTERATION HALO AROUND
UPPER SURFACE, WHITE VEINS IN PCES 1 + 4 + 11;
Alteration : MOD
INTERVAL (0-26) + (60-109) CM;
EXT
INTERVAL (26-60) CM;
MOD TO EXT INTERVAL (109-146) CM, PCE 13 HAS LIGHT
GREENISH GREY ALTERAION HALO AROUND UPPER SURFACE;
Comments : GREENISH COLOR OVERALL, REMAINDER OF ROCK OF PCE 6
IS DARK GREY, CORE 90 SECTION 2 HAS SAME LITHOLOGY
AS CORE 90 SECTION 1;
Replacement: EPIDOTE
IN CEMENT OF BRECCIA;
SULFIDES
IN CEMENT OF BRECCIA;
CLAY MINERALS
GREENISH CLAY MINERAL IN CEMENT OF BRECCIA;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 999.00
Core: 90 Top of Core Depth (m) : 994.50
Sect: 3 Top of Section Depth(m): 997.50
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
SIMILAR LITHOLOGY AS SECTION 1 AND SECTION 2 OF
CORE 90;
Piece No. : PCES 1 (2-11), 2 (12-19), 3 (21-31), 4 (32-43),
5 (45-54), 6 (55-60), 7 (62-67), 8 (70-75),
9 (77-86), 10 (88-97), 11 (99-109), 12 (110-125),
13 (127-134), 14 (136-140), 15 (142-150);
Texture : VERY FINE GRAINED, BRECCIATED, APHYRIC TO SPARSELY
PHYRIC, PCES 9-12A ARE OL SPARSELY PHYRIC, PCES
1 + 3-6 + 12-15 ARE BRECCIATED VERY FINE GRAINED
APHYRIC BASALT, BRECCIAS CONSISTS OF ANGULAR PIECES
COMMONLY CEMENTED BY GREENISH MINERALS;
Structure : HIGHLY FRACTURED, FRACTURES UP TO 3 MM IN WIDTH,
WHITE VEINS IN PCES 1 + 3-5 + 7 + 8 + 12 + 13 + 15
WITH SOME CONTAINING EPIDOTE SUCH AS PCES 4 + 7 + 8
+ 12;
Alteration : MOD TO EXTENSIVE,
PCE 11 HAS CHILLED CONTACT WITH
ALTERED HYALOCLASTIC MATERIAL;
Comments : GREENISH COLOR, PCE 11 HAS CHILLED CONTACT WITH
ALTERED HYALOCLASTIC MATERIAL, CORE 90 SECTION 3
HAS SIMILAR LITHOLOGY AS CORE 90 SECTION 1 AND 2,
PCE 15 COULD BE UPPERMOST PART OF APHYRIC BASALT
SEQUENCE OF SECTION 4 CORE 90;
Phenocrysts: OLIVINE
Size(mm): TO 2
OL REPLACED BY CHLORITE;
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY CHLORITE;
EPIDOTE
IN SOME FRACTURES, POSSIBLY A GREENISH MINERAL IN
CEMENT OF BRECCIA;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1000.50
Core: 90 Top of Core Depth (m) : 994.50
Sect: 4 Top of Section Depth(m): 999.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (3-8), 1B (8-12), 2 (13-18), 3 (20-26),
4 (27-37), 5 (40-48), 6A (50-57), 6B (58-64),
6C (64-71), 6D (72-84), 7 (86-89), 8 (90-99),
9 (100-108), 10A (110-117), 10B (118-125),
11 (125-128), 12A (130-139), 12B (140-150);
Texture : FINE GRAINED, APHYRIC;
Structure : VEINS RANGING FROM 1 TO 20 MM IN WIDTH FILLED BY
EPIDOTE + WHITE MINERALS + COLORLESS TRANSPARENT
MINERAL + DARK GREEN MINERAL AND SPARCE SULFIDE
CRYSTALS (SEE SKETCH ON VISUAL CORE DESCRIPTION
FORM), FRACTURES HAVE HORIZONTAL (4) OBLIQUE (5)
AND VERTICAL 26 CM IN LENGTH;
Alteration : MOD;
Comments : GREENISH GREY;
Replacement: EPIDOTE
IN VEINS;
SULFIDES
SPARSE SULFIDE CRYSTALS ARE ALSO IN VEINS;
CHLORITE
DARK GREEN MINERAL FOUND IN VEINS;
OTHER
WHITE MINERALS IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/ 500 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1001.00
Core: 90 Top of Core Depth (m) : 994.50
Sect: 5 Top of Section Depth(m): 1000.50
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS REST OF CORE 90;
Piece No. : PCES 1 (2-11), 2 (12-19), 3 (21-24), 4 (26-39),
5 (41-49);
Texture : APHYRIC, FINE GRAINED, BRECCIA CEMENTED WITH GREEN
CLAY + WHITE MINERALS + EPIDOTE;
Alteration : FRESH;
Comments : BRECCIA CEMENTED WITH GREEN CLAY + WHITE MINERALS
+ EPIDOTE, SAME AS REST OF CORE 90;
Replacement: CLAY MINERALS
GREEN CLAY IN CEMENT OF BRECCIA;
OTHER
WHITE MINERALS IN CEMENT OF BRECCIA;
EPIDOTE
IN CEMENT OF BRECCIA;
SULFIDES
COMMON DISSEMINATED SULFIDES;
Leg : 83 Top/Bottom Interval(mm): 0/ 660 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1004.16
Core: 91 Top of Core Depth (m) : 1003.50
Sect: 1 Top of Section Depth(m): 1003.50
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
BRECCIA;
Piece No. : PCES 1 (2-7), 2 (8-16), 3 (18-28), 4 (29-36),
5 (38-43), 6 (45-51), 7 (53-59), 8 (61-66);
Texture : SPARSELY PHYRIC, FINE GRAINED, SPARSELY PHYRIC
BASALT FRAGMENTS, BRECCIA CEMENTED BY CHLORITE +
MINOR WHITE MINERALS + TAN TO PINKISH MINERAL +
MINOR SULFIDES + EPIDOTE;
Alteration : EXT
INTERVAL (0-16) + (38-66) CM;
MOD
INTERVAL (16-38) CM;
Replacement: CHLORITE
IN CEMENT OF BRECCIA;
OTHER
MINOR WHITE MINERALS POSSIBLY QTZ OR TALC OR
CALCITE IN CEMENT OF BRECCIA;
UNIDENTIFIED
TAN TO PINKISH MINERAL NOT OBSERVED PREVIOUSLY;
SULFIDES
MINOR SULFIDES IN CEMENT OF BRECCIA;
EPIDOTE
IN CEMENT OF BRECCIA;
Leg : 83 Top/Bottom Interval(mm): 660/1500 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1005.00
Core: 91 Top of Core Depth (m) : 1003.50
Sect: 1 Top of Section Depth(m): 1004.16
LITHOLOGY: PLAG-OL-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 9 (66-72), 10 (74-79), 11 (80-86), 12 (87-92),
13 (94-101), 14 (103-111), 15 (113-119),
16 (120-125), 17 (127-133), 18 (135-138),
19 (140-149);
Texture : FINE GRAINED, SPARSELY PHYRIC, PCE 9 AND PCE 3 HAVE
A CHILLED MARGIN POSSIBLY A CHILLED PILLOW MARGIN;
Structure : PCE 11 HAS LIGHTER GREEN ALTERATION ZONES AROUND
CHLORITE VEINS, PCE 19 HAS VUGS OF 1 CM ANASTOMOSING
FILLED WITH CALCITE, PCE 14 HAS FRACTURE SURFACE
COATED WTIH CHLORITE;
Alteration : MOD
LIGHTER GREEN ALTERATION ZONES AROUND CHLORITE
VEIN ON PCE 11;
Replacement: CHLORITE
CHLORITE VEIN ON PCE 11, ON PCE 14 FRACTURE
SURFACE COATED WITH CHLORITE;
SULFIDES
COMMON SULFIDES DISSEMINATED IN ROCK;
Leg : 83 Top/Bottom Interval(mm): 0/ 400 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1005.40
Core: 91 Top of Core Depth (m) : 1003.50
Sect: 2 Top of Section Depth(m): 1005.00
LITHOLOGY: PLAG-OL-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-6), 2 (8-19), 3 (21-25), 4 (27-33),
5 (36-39);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED;
Structure : FEW CRACKS FILLED WITH CHLORITE;
Alteration : MOD;
Replacement: CHLORITE
FEW CRACKS FILLED WITH CHLORITE;
Leg : 83 Top/Bottom Interval(mm): 400/ 840 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1005.84
Core: 91 Top of Core Depth (m) : 1003.50
Sect: 2 Top of Section Depth(m): 1005.40
LITHOLOGY: BRECCIA BASALT;
Piece No. : PCES 6A (42-44), 6B (42-48), 6C (48-55), 6D (56-61),
6E (63-66), 6F (66-72), 6G (72-76), 7 (78-84);
Texture : FINE GRAINED BRECCIA BASALT CEMENTED BY DARK GREEN
CHLORITE + TAN TO PINK MINERAL + MINOR QTZ + COMMON
SULFIDES + EPIDOTE;
Alteration : MOD;
Comments : BRECCIA BASALT CEMENTED BY DARK GREEN CHLORITE;
Replacement: CHLORITE
IN CEMENT OF BRECCIA;
SULFIDES
IN CEMENT OF BRECCIA;
OTHERS
TAN TO PINK MINERAL IN CEMENT OF BRECCIA, WHITE
MINERALS IN CEMENT AND VEINS;
QUARTZ
MINOR QTZ IN CEMENT AND VEINS;
EPIDOTE
IN CEMENT AND VEINS;
Leg : 83 Top/Bottom Interval(mm): 840/1500 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1006.50
Core: 91 Top of Core Depth (m) : 1003.50
Sect: 2 Top of Section Depth(m): 1005.84
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 8 (85-91), 9 (93-96), 10 (98-106),
11 (108-113), 12 (115-118), 13 (120-130),
14 (132-136), 15A (139-146), 15B (147-150);
Texture : FINE GRAINED, APHYRIC;
Structure : PCE 14 IS FRACTURED SURFACE, HIGHLY FRACTURED WITH
FRACTURES FILLED WITH MOSTLY CHLORITE, COMMON VEINS
OF WHITE MINERALS + EPIDOTE BUT NO PINK TAN MINERAL,
WHITE VEINS GENERALLY CUT CHLORITE VEINS;
Alteration : MOD;
Replacement: CHLORITE
IN FRACTURES, WHITE VEINS GENERALLY CUT CHLORITE
VEINS;
EPIDOTE
COMMON VEINS OF WHITE MINERALS + EPIDOTE;
OTHER
WHITE MINERALS, COMMON VEINS OF WHITE MINERALS +
EPIDOTE;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1008.00
Core: 91 Top of Core Depth (m) : 1003.50
Sect: 3 Top of Section Depth(m): 1006.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-8), 2 (9-13), 3 (15-17), 4 (19-27),
5 (29-36), 6A (38-46), 6B (47-51), 6C (52-57),
7 (59-64), 8 (67-71), 9 (72-88), 10 (80-86),
11 (87-93), 12 (95-105), 13 (106-112), 14 (113-121),
15 (122-126), 16 (128-133), 17 (134-139),
18 (141-144), 19 (147-149);
Texture : APHYRIC, VERY FINE GRAINED, PCES 1 + 2 + 6A + 6B +
7 + 11 + 13 + 14 ARE BRECCIATED, PCES 3-5 + 6C + 8
+ 9 + 12 + 15-19 ARE HIGHLY FRACTURED;
Structure : PCES 3-5 + 6C + 8 + 9 + 12 + 15-19 ARE HIGHLY
FRACTURED, EPIDOTE IS ABUNDANT IN THE BRECCIATED
MATERIAL OCCURRING IN VEINS AND VUGS ACCOMPANIED
BY CHLORITE (SEE PCE 1), VEINS IN FRACTURED PIECES
ARE OF TWO GENERATIONS WITH THE OLDER ONES FILLED
WITH DARK GREEN MATERIAL AND THE YOUNGER ONES FILLED
WITH WHITE MATERIAL, SULFIDES PRESENT IN VEINS,
FRACTURES IN NON-BRECCIATED ROCKS RANGE UP TO 2 MM
WITH HORIZONTAL (5) OBLIQUE (4) AND VERTICAL 30 CM,
CONTINUING FROM SECTION 2;
Vesicles :
Location: Filling: CHLOR, EPIDOTE
VUGS CONTAIN EPIDOTE AND CHLORITE;
Alteration : MOD
VEINS IN FRACTURED PIECES ARE OF TWO GENERATIONS
WITH THE OLDER ONES FILLED WITH DARK GREEN
MATERIAL AND THE YOUNGER ONES FILLED WITH WHITE
MATERIAL, THE PINKISH MATERIAL WHICH IS WIDESPREAD
IN CORE 91 SECTION 1 AND 2 IS ABSENT OR OCCURS IN
ONLY VERY SUBORDINATE AMOUNTS;
Replacement: EPIDOTE
ABUNDANT IN THE BRECCIATED MATERIAL OCCURRING IN
VEINS AND VUGS WITH CHLORITE;
CHLORITE
CONCENTRATED AROUND BRECCIATED PIECES, ALSO IN
VEINS AND VUGS WITH EPIDOTE;
SULFIDES
OCCUR IN VEINS OR AS DISSEMINATED GRAINS;
OTHERS
DARK GREEN MATERIAL IN OLDER VEINS, WHITE MATERIAL
IN YOUNGER VEINS, PINKISH MATERIAL WHICH IS
WIDESPREAD IN CORE 91 SECTION 1 AND 2 IS ABSENT OR
OCCURS ONLY IN VERY SUBORDINATE AMOUNTS;
Leg : 83 Top/Bottom Interval(mm): 0/ 470 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1008.47
Core: 91 Top of Core Depth (m) : 1003.50
Sect: 4 Top of Section Depth(m): 1008.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-13), 2 (15-20), 3 (22-30), 4 (32-44);
Texture : APHYRIC, VERY FINE GRAINED, BRECCIATED IN PCE 1
SIMILAR TO SECTION 3, PCES 3 AND 4 HAVE A DOLERITIC
TEXTURE;
Alteration : MOD;
Replacement: CHLORITE
CHLORITE IS SCATTERED THROUGHOUT THE ROCK;
Leg : 83 Top/Bottom Interval(mm): 0/ 800 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1013.30
Core: 92 Top of Core Depth (m) : 1012.50
Sect: 1 Top of Section Depth(m): 1012.50
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-9), 2 (11-17), 3 (18-21), 4 (23-31),
5 (33-41), 6 (43-54), 7 (57-60), 8 (62-70),
9 (72-79);
Texture : SPARSELY PHYRIC, PCES 1-8 ARE MEDIUM GRAINED, PCE 9
IS FINE GRAINED RUBBLE;
Structure : MASSIVE FLOW OR DIKE APPEARS CONTINUOUS WITH LOWER
CORE 91, CHLORITE VEINS CUT BY WHITE VEINS;
Alteration : EXT;
Replacement: CHLORITE
CHLORITE VEINS CUT BY WHITE VEINS;
QUARTZ
IDENTITY QUESTIONED IN WHITE VEINS;
EPIDOTE
IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 800/1490 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1013.99
Core: 92 Top of Core Depth (m) : 1012.50
Sect: 1 Top of Section Depth(m): 1013.30
LITHOLOGY: PLAG-OL-CPX MOD PHYRIC PILLOW BASALT;
Piece No. : PCES 10A (80-87), 10B (80-90), 11 (92-96),
12 (98-102), 13A (105-110), 13B (112-116),
13C (117-123), 13D (124-131), 14 (134-139),
15 (142-148);
Texture : MOD PHYRIC, PCE 9 IS FINE GRAINED RUBBLE, PCE 13 IS
CHILLED PILLOW MARGIN, PCES 13A AND 13B ARE
BRECCIATED HYALOCLASTITES CEMENTED BY CHLORITE WITH
COMMON EPIDOTE + QTZ + TALC + POSSIBLY CALCITE;
Structure : HIGHLY FRACTURED, FRACTURES MOSTLY FILLED WITH
CHLORITE, PCES 13C + 13D WITH 1-2 MM WIDE DARK GREEN
HALOES (POSSIBLY CHLORITIC) AROUND CHLORITE VEINS,
ON PCE 15 WHITE VEINS (WITH POSSIBLY QTZ CUTTING)
ALMOST PERPENDICULAR TO CHLORITE VEINS;
Alteration : EXT;
Comments : EPIDOTE + TALC + QTZ + CALCITE ARE MORE ABUNDANT
IN HYALOCLASTIC BRECCIA;
Replacement: CHLORITE
FRACTURES FILLED WITH MOSTLY CHLORITE, CHLORITE
VEINS, IN BRECCIATED HYALOCLASTITE CEMENT;
EPIDOTE
IN BRECCIATED HYALOCLASTITE CEMENT;
TALC
IN BRECCIATED HYALOCLASTITE CEMENT;
CALCITE
IDENTIFICATION UNCERTAIN IN BRECCIATED
HYALOCLASTITE CEMENT;
QUARTZ
POSSIBLY IN WHITE VEINS, IN BRECCIATED
HYALOCLASTITE CEMENT;
Leg : 83 Top/Bottom Interval(mm): 0/ 540 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1014.54
Core: 92 Top of Core Depth (m) : 1012.50
Sect: 2 Top of Section Depth(m): 1014.00
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-7), 2 (8-17), 3 (19-25), 4 (26-35),
5A (35-46), 5B (48-53);
Texture : APHYRIC TO SPARSELY PHYRIC, VERY FINE GRAINED,
PCE 5B HAS CHILLED MARGIN (CONTACT-HORIZONTAL);
Structure : VEINS, VEINS IN PCE 2 FILLED BY DARK GREEN MATERIAL,
VEINS IN PCES 3 + 4 FILLED WITH WHITE MATERIAL SUCH
AS QTZ AND CALCITE WITH EPIDOTE, EPIDOTE CONTAINING
VEIN UP TO 5 MM IN PCE 4;
Alteration : MOD;
Comments : PCE 5B HAS CHILLED MARGIN (CONTACT-HORIZONTAL);
Replacement: CALCITE
IN VEINS OF PCES 3 AND 4;
QUARTZ
IN VEINS OF PCES 3 AND 4;
EPIDOTE
IN VEINS OF PCES 3 AND 4, EPIDOTE CONTAINING VEIN
UP TO 5MM IN PCE 4;
TALC
Leg : 83 Top/Bottom Interval(mm): 540/1490 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1015.49
Core: 92 Top of Core Depth (m) : 1012.50
Sect: 2 Top of Section Depth(m): 1014.54
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 6 (55-59), 7 (61-66), 8A (68-73), 8B (74-82),
8C (84-90), 8D (91-99), 8E (100-105), 9 (106-117),
10A (120-126), 10B (127-133), 11 (135-141),
12 (142-149);
Texture : MOD PHYRIC, FINE GRAINED;
Structure : CUT BY MANY CRACKS, THE DIFFERENT VEIN FILLINGS ARE
DARK GREEN MATERIAL OR WHITE MATERIAL WHICH
MAINLY CONSISTS OF CALCITE + QTZ + POSSIBLY TALC,
ALSO THERE ARE VEINS WITH EPIDOTE + CALCITE + QTZ,
SULFIDES ARE COMMON ACCESSORIES IN VEINS;
Alteration : MOD
OL ALTERED AND REPLACED BY CHLORITE;
Replacement: CHLORITE
Minerals Replaced: OL
OL ALTERED AND REPLACED BY CHLORITE;
CHLORITE
DARK GREEN MATERIAL WHICH FILLS VEINS, OL
REPLACED BY CHLORITE;
CALCITE
IN VEINS;
QUARTZ
IN VEINS;
EPIDOTE
IN VEINS;
TALC
IDENTIFICATION UNCERTAIN IN VEINS;
SULFIDES
ARE COMMON ACCESSORIES IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/ 240 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1015.74
Core: 92 Top of Core Depth (m) : 1012.50
Sect: 3 Top of Section Depth(m): 1015.50
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-24);
Texture : MOD PHYRIC;
Alteration : MOD;
Comments : CONTINUATION OF CORE 92 SECTION 2 PCE 12;
Leg : 83 Top/Bottom Interval(mm): 240/1450 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1016.95
Core: 92 Top of Core Depth (m) : 1012.50
Sect: 3 Top of Section Depth(m): 1015.74
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 2 (26-30), 3 (32-35), 4 (37-43), 5 (44-47),
6 (49-56), 7 (58-63), 8 (64-76), 9 (77-81),
10 (83-88), 11 (90-94), 12 (95-104), 13 (106-110),
14 (112-116), 15 (119-122), 16 (124-131),
17 (133-143);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, PCES 2-12 IS ONE
PILLOW UNIT WITH GRAINS BECOMING FINER TOWARDS
MARGIN, PCE 12 IS BRECCIATED HYALOCLASTIC, MATRIX OF
CHLORITE AND WHITE MINERALS MAINLY AS A VEIN
COMPONENT, PCE 13 IS A POSSIBLE CHILLED MARGIN,
BRECCIA SAME TEXTURE AS BASALT IN PCES 16 AND 17
EXCEPT BRECCIA CONTAINS CHILLED ANGULAR FRAGMENTS OF
BASALT;
Structure : VEINS, PCES 2-12 ARE ONE PILLOW UNIT, CRACKS HAVE
VERTICAL (8) HORIZONTAL (6) AND OBLIQUE (10);
Alteration : MOD
INTERVAL (24-95) + (105-145) CM;
EXT
INTERVAL (95-105) CM,
PRINCIPAL ALTERATION TO DARK CHLORITE AS VEIN
FILLING AND BRECCIA CEMENT, SOME MINOR VEINING
BY WHITE MINERALS PARTICULARLY IN PCE 14, PCE 14
ALSO CONTAINS LATE EPIDOTE, SEVERAL PIECES SUGGEST
WHITE MINERALS POST DATE GREEN CHLORITE IN VEINS;
Comments : GREYISH GREEN, BRECCIA SUCH AS IN PCE 17 COULD BE
TECTONIC OR VOLCANIC;
Phenocrysts: OLIVINE ( 1%)
Size(mm): 2
OL ALTERED TO DARK GREEN CHLORITE;
Replacement: CHLORITE
Minerals Replaced: OL
OL ALTERED TO DARK GREEN CHLORITE;
EPIDOTE
IN VEINS;
TALC
POSSIBLY A WHITE MINERAL RESPONSIBLE FOR VEINING;
QUARTZ
POSSIBLY A WHITE MINERAL RESPONSIBLE FOR VEINING;
Leg : 83 Top/Bottom Interval(mm): 0/1490 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1022.99
Core: 93 Top of Core Depth (m) : 1021.50
Sect: 1 Top of Section Depth(m): 1021.50
LITHOLOGY: OL-PLAG-CPX MOD TO SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-5), 2 (7-15), 3 (17-21), 4 (23-28),
5 (29-32), 6 (34-37), 7 (40-43), 8 (45-49),
9 (51-56), 10 (58-62), 11 (64-67), 12 (69-79),
13 (80-84), 14 (86-95), 15A (96-106), 15B (106-112),
16 (113-123), 17 (124-129), 18 (130-135),
19 (137-141), 20 (144-148);
Texture : MOD TO SPARSELY PHYRIC, PCES 12 + 16-20 ARE VERY
SPARSELY PHYRIC, PCES 10 + 11 + 13 AND PART OF PCE 9
ARE BRECCIATED PIECES WITH BOTH CHLORITE AND WHITE
MINERALS + EPIDOTE + PYRITE IN VEINS WHICH CRISS-
CROSS;
Structure : PIECES 10 + 11 + 13 AND PART OF PCE 9 HAVE CHLORITE
+ WHITE MINERALS + EPIDOTE + PYRITE IN VEINS WHICH
CRISS-CROSS, PCES 12 + 16-20 ARE ALL PROBABLY
PILLOW LAVAS, CRACKS 1-3 MM WIDE FILLED WITH
CHLORITE AND PYRITE, VEINS WITH WHITE MINERALS +
EPIDOTE + PYRITE, VEINS AND CRACKS HAVE OBLIQUE (14)
HORIZONTAL (16) AND VERTICAL (10);
Alteration : MOD
ALTERATION CONSISTS OF CRACKS FILLED WITH CHLORITE
AND PYRITE + VEINS WITH WHITE MINERALS AND EPIDOTE
AND PYRITE + PYRITE ALSO INCLUDED IN HOST BASALT;
Comments : GREYISH GREEN, PART OF SECTION MAY BE A CONTINUATION
OF CORE 92 SECTION 3;
Phenocrysts: OLIVINE ( 3%)
Size(mm): TO 2
OL ALTERED TO DARK MINERAL;
PLAGIOCLASE ( 2%)
Size(mm): 1-2
CLINOPYROXENE ( <1%)
Size(mm): 1
Replacement: CHLORITE
IN VEINS SUCH AS FOUND IN PCES 9-11 + 13, ALSO IN
CRACKS 1-3 MM WIDE WITH PYRITE;
EPIDOTE
IN VEINS SUCH AS THOSE FOUND IN PCES 9-11 + 13,
ALSO IN VEINS WITH WHITE MINERALS AND PYRITE;
PYRITE
IN VEINS SUCH AS THOSE FOUND IN PCES 9-11 + 13,
ALSO IN VEINS WITH WHITE MINERALS AND EPIDOTE, IN
CRACKS WITH CHLOR OF 1-3 MM WIDE, PYRITE ALSO IN
HOST BASALT HOWEVER OVERALL IT IS LESS ABUNDANT;
OTHER
WHITE MINERALS IN VEINS WITH EPIDOTE AND PYRITE,
ALSO IN VEINS AS THOSE FOUND IN PCES 9-11 + 13;
Leg : 83 Top/Bottom Interval(mm): 0/1490 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1024.49
Core: 93 Top of Core Depth (m) : 1021.50
Sect: 2 Top of Section Depth(m): 1023.00
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-10), 2 (11-22), 3 (23-40), 4 (43-49),
5 (52-57), 6 (59-67), 7 (69-75), 8 (77-89),
9 (90-105), 10 (106-114), 11 (115-124),
12 (126-130), 13 (132-136), 14 (138-148);
Texture : MOD PHYRIC, FINE GRAINED, ALL BASALTS ARE VERY FINE
GRAINED ESPECIALLY PCES 1 + 4 + 7 + 10, BRECCIATED
HYALOCLASTIC MATERIAL IS ASSOCIATED WITH PCE 1 AND
IS A PROBABLE PILLOW MARGIN, IN PCE 2 BRECCIA CEMENT
HAS DARK AND LIGHT GREEN CLAYS WITH WHITE VEINING,
RUBBLE IN PCE 6 IS POSSIBLY A BRECCIA HYALOCLASTITE,
PCES 12-14 IS START OF COARSER BASALT;
Structure : PCE 11 HAS VERY STRONG HORIZONTAL VEINING AND IS
FILLED WITH DARK CHLORITE WHICH GIVES IMPRESSION
OF TECTONIZATION - SHEARING, STRONGLY VEINED BY
SMALL HORIZONTAL VEINS MAINLY FILLED BY CHLORITE,
EPIDOTE COMMON IN PCE 9 AS VEIN WITH LESSER DEGREE
ELSEWHERE, WHITE VEINING COMMON AND CAN CUT GREEN
VEINS OR ACT AS FILLING TO CENTERS, CRACKS WITH
VERTICAL (6) HORIZONTAL (15) AND OBLIQUE (9);
Alteration : MOD;
Comments : GREY GREEN;
Phenocrysts: OLIVINE ( 3%)
Size(mm): 2-3
OL ALTERED TO DARK GREEN CHLORITE;
Replacement: EPIDOTE
IN VEINS;
CHLORITE
IN VEINS, OL ALTERED TO DARK GREEN CHLORITE;
CLAY MINERALS
IN CEMENT;
OTHER
WHITE MINERALS PERHAPS MINERALS SUCH AS QTZ AND
TALC PRESENT IN WHITE VEINING WHICH CUTS GREEN
VEINS OR ACTS AS FILLING TO CENTERS;
PYRITE
SMALL AMOUNT OF DISSEMINATED PYRITE;
Leg : 83 Top/Bottom Interval(mm): 0/ 190 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1024.69
Core: 93 Top of Core Depth (m) : 1021.50
Sect: 3 Top of Section Depth(m): 1024.50
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-17);
Texture : MEDIUM GRAINED, MOD PHYRIC;
Alteration : MOD;
Comments : GREENISH GREY;
Phenocrysts: OLIVINE
Size(mm): 1-5
OL REPLACED BY PROBABLE CHLORITE;
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY PROBABLE CHLORITE;
Leg : 83 Top/Bottom Interval(mm): 190/ 850 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1025.35
Core: 93 Top of Core Depth (m) : 1021.50
Sect: 3 Top of Section Depth(m): 1024.69
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 2 (20-37), 3 (38-45), 4 (47-59), 5 (61-72),
6 (74-83);
Texture : FINE GRAINED, APHYRIC, NO CHILLED MARGIN;
Structure : VEINS OF .5 TO 3 MM IN WIDTH MOSTLY FILLED BY WHITE
MINERALS AND SOMETIMES EPIDOTE IN THE CENTER, DARK
GREEN MINERAL IS LESS ABUNDANT HERE, CRACKS HAVE
HORIZONTAL (3) OBLIQUE (3) AND VERTICAL OF 11 CM;
Alteration : MOD
IN SEQUENCE OF ALTERATION EPIDOTE CAME AFTER WHITE
MINERAL (SEE PCE 2);
Replacement: EPIDOTE
IN VEINS;
OTHERS
WHITE MINERALS IN VEINS, A DARK GREEN MINERAL
WHICH IS LESS ABUNDANT;
Leg : 83 Top/Bottom Interval(mm): 0/1000 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1031.50
Core: 94 Top of Core Depth (m) : 1030.50
Sect: 1 Top of Section Depth(m): 1030.50
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (3-9), 2 (11-17), 3 (19-24), 4 (26-34),
5 (36-44), 6 (46-50), 7 (52-57), 8 (58-66),
9 (67-73), 10 (75-79), 11 (82-85), 12 (87-91),
13 (93-99);
Texture : APHYRIC TO SPARSELY PHYRIC, PCE 1 IS FINER GRAINED
THAN THE REMAINING SECTION AND SEEMINGLY UNRELATED
TO CORE 93 SECTION 3, PCES 2-13 ARE APHYRIC MEDIUM
GRAINED AND ARE COARSER THAN ANYTHING SO FAR
OBSERVED OR ANYTHING ELSE IN CORE 94, PLAG RADIATE
CLUSTERS FORM A SPECKLED APPEARANCE IN THE ROCK
DUE TO THEIR SIZE;
Structure : PLAG RADIATE CLUSTERS;
Comments : GREY;
Alteration : MOD
OL ALTERED TO DARK MINERAL;
Comments : GREY;
Phenocrysts: OLIVINE
OL ALTERED TO DARK MINERAL;
PLAGIOCLASE
PLAG RADIATE CLUSTERS FORM SPECKLED APPEARANCE IN
THE ROCK DUE TO THEIR SIZE;
CLINOPYROXENE
CPX PRESENT BUT ARE NOT LARGE ENOUGH TO BE
CONSIDERED PHENOS;
Replacement: OTHER
DARK MINERAL, OL ALTERED TO DARK MINERAL;
Leg : 83 Top/Bottom Interval(mm): 1000/1500 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1032.00
Core: 94 Top of Core Depth (m) : 1030.50
Sect: 1 Top of Section Depth(m): 1031.50
LITHOLOGY: OL-CPX SPARSELY TO MODERATELY PHYRIC BASALT;
Piece No. : PCES 14 (101-110), 15 (112-119), 16 (121-125),
17 (127-137), 18 (138-143), 19 (145-149);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM GRAINED;
Structure : FRACTURES FILLED BY DARK GREEN MINERAL, PCE 17
CONTAINS SMALL VEIN WITH WHITE MINERALS + PYRITE +
SPHALERITE, VEINS HAVE OBLIQUE (1) HORIZONTAL (3)
VERTICAL (3);
Alteration : MOD
ALTERATION SEEMS TO BE LESS THAN BEFORE, A FEW
FRACTURES OF 1 MM FILLED BY DARK GREEN MINERAL,
PCE 17 CONTAINS SMALL VEIN WITH WHITE MINERALS
+ PYRITE + SPHALERITE;
Replacement: OTHER
DARK GREEN MINERAL IN FRACTURES;
PYRITE
IN SMALL VEIN ON PCE 17;
OTHER
WHITE MINERALS IN SMALL VEIN ON PCE 17;
SPHALERITE
IN SMALL VEIN ON PCE 17;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1033.50
Core: 94 Top of Core Depth (m) : 1030.50
Sect: 2 Top of Section Depth(m): 1032.00
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (3-10), 2A (12-20), 2B (21-29), 2C (30-36),
3 (38-46), 4 (48-59), 5 (60-72), 6 (73-77),
7 (79-85), 8 (87-93), 9 (95-103), 10 (104-112),
11 (115-121), 12 (123-127), 13 (128-136),
14 (138-146);
Texture : MOD PHYRIC, FINE TO MEDIUM GRAINED, CORE 94 SECTION
2 PCE 1 IS FINER GRAINED THAN CORE 94 SECTION 1
PCES 14-19, SIZE OF GRAIN INCREASES FROM FINE TO
MEDIUM GRAINED FROM PCES 1-5, GRAIN SIZE DECREASES
THEN FROM PCES 5-10, PCES 1-10 IS ONE UNIT, PCE 11
IS BRECCIA POSSIBLY HYALOCLASTITE CEMENTED BY LIGHT
AND DARK GREEN MATERIAL, PCES 2-3 ARE SLIGHTLY
BRECCIATED;
Structure : THIN VEINS RANGING FROM LESS THAN .5 MM TO 3 MM
ARE FILLED BY LIGHT GREEN AND DARK GREEN MATERIAL
+ PYRITE WITHOUT PREFERRED ORIENTATION, WHITE VEIN
IN PCE 1, EPIDOTE VEIN IN PCE 10, CRACKS WITH
HORIZONTAL (5) OBLIQUE (12) VERTICAL (55 CM);
Alteration : MOD;
Comments : PCES 1-10 IS ONE UNIT, GREENISH GREY;
Phenocrysts: OLIVINE ( 5%)
Size(mm): 1-5
OL REPLACED BY DARK GREEN MINERAL POSSIBLY
CHLOR, OL PHENOS WERE PLUCKED OUT DURING DRILLING
GIVING HOLES ON DRILLING SURFACE;
PLAGIOCLASE ( 3%)
Size(mm): 1-7
PLAG PHENOS NOT EASILY VISIBLE;
CLINOPYROXENE ( <1%)
Size(mm): 4
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL POSSIBLY CHLOR;
PYRITE
IN THIN VEINS, SMALL CRYSTALS < .5 MM OF PYRITE
ARE ASSOCIATED WITH DARK GREEN MINERAL;
EPIDOTE
VEIN IN PCE 10;
OTHER
LIGHT GREEN AND DARK GREEN MATERIAL IN THIN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1035.00
Core: 94 Top of Core Depth (m) : 1030.50
Sect: 3 Top of Section Depth(m): 1033.50
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-8), 2A (10-21), 2B (22-27), 3 (30-35),
4 (36-44), 5 (45-52), 6 (53-60), 7A (62-66),
7B (66-73), 8 (74-78), 9 (80-89), 10 (90-95),
11 (97-105), 12 (106-111), 13 (112-119),
14 (120-125), 15 (127-133), 16 (134-139),
17A (141-146), 17B (142-148);
Texture : MOD PHYRIC, ALL SAMPLES COMPARATIVELY MEDIUM
GRAINED, NO CHILLED AREAS OR EXTREMELY FINE GRAINED
REGIONS, TECTONIC BRECCIAS IN PCES 2A-2B + 5, PCE 2A
HAS BRECCIA WITH TWO CLAY TYPES, PCE 5 HAS BRECCIA
CEMENTED BY DARK GREEN MATERIAL WITH CHALCOPYRITE,
PCES 15-17B ARE ALMOST APHYRIC AND POSSIBLY A NEW
UNIT;
Structure : SOME FRACTURING IN PCES 3 AND 4, TOP SECTION OF CORE
IS HEAVILY VEINED (< 1 MM) FILLED WITH DARK GREEN
MATERIAL WITH NO WHITE VEINING, CRACKS EXCLUDING
BRECCIAS ARE VERTICAL (3) HORIZONTAL (2);
Alteration : MOD
INTERVAL (0-9) + (17-45) + (52-150) CM;
EXT
INTERVAL (9-17) + (45-52) CM;
PCE 2A IS BRECCIA WITH TWO CLAY TYPES AND
DUE PERHAPS TO ALTERATION OF THE PRE-EXISTING
DARK CLAYS ALONG AN ALTERATION FRONT, SEE OTHER
INFORMATION FOR ADDITIONAL COMMENTS ON PCE 2A;
Comments : GREYISH GREEN, PCE 2A HAS BRECCIA WITH TWO CLAY
TYPES WITH THE MAJORITY OF ROCK CEMENTED BY DARK
GREEN MATERIAL + AGAINST THIS IS A SHARP CONTACT
FROM WHICH THE CEMENT IS A LIGHT GREEN, POSSIBLY A
REACTION OF BRECCIATION AND RECEMENTATION OR
ALTERATION OF THE PRE-EXISTING DARK CLAYS ALONG AN
ALTERATION FRONT, PCES 15-17B POSSIBLY NEW UNIT;
Phenocrysts: OLIVINE ( 4-5%)
Size(mm): 2-3
OL REPLACED BY DARK GREEN MINERALS POSSIBLY
CHLORITE;
PLAGIOCLASE ( 2%)
Size(mm): 3-5
CLINOPYROXENE ( 1%)
Size(mm): 5-7
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERALS POSSIBLY CHLOR;
CLAY MINERALS
PCE 2A HAS BRECCIA WITH TWO CLAY TYPES;
Leg : 83 Top/Bottom Interval(mm): 0/ 550 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1040.05
Core: 95 Top of Core Depth (m) : 1039.50
Sect: 1 Top of Section Depth(m): 1039.50
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (0-14), 2A (16-18), 2B (19-25), 2C (26-37),
3 (39-54);
Texture : MOD PHYRIC, MEDIUM GRAINED;
Alteration : MOD;
Comments : GREENISH GREY;
Phenocrysts: OLIVINE ( 5%)
Size(mm): .5-4
OL REPLACED BY DARK GREEN MINERAL;
PLAGIOCLASE ( 2%)
Size(mm): 2
CLINOPYROXENE ( 1%)
Size(mm): 2-3
Replacement: OTHER
OL REPLACED BY DARK GREEN MINERAL;
Leg : 83 Top/Bottom Interval(mm): 550/1360 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1040.86
Core: 95 Top of Core Depth (m) : 1039.50
Sect: 1 Top of Section Depth(m): 1040.05
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 4 (55-60), 5 (62-67), 6 (69-79), 7 (80-83),
8A (85-88), 8B (89-93), 8C (94-98), 9 (100-107),
10 (110-123), 11 (125-135);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED;
Alteration : MOD;
Comments : GREENISH GREY;
Phenocrysts: OLIVINE ( TO 2%)
Size(mm): 3
OL REPLACED BY DARK GREEN MINERAL;
PLAGIOCLASE
Size(mm): TO 2
Replacement: OTHER
OL REPLACED BY DARK GREEN MINERAL;
Leg : 83 Top/Bottom Interval(mm): 1360/1460 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1040.96
Core: 95 Top of Core Depth (m) : 1039.50
Sect: 1 Top of Section Depth(m): 1040.86
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 12 (136-145);
Texture : COARSE GRAINED, SPARSELY PHYRIC, RARE TINY PYRITE
CRYSTALS IN PCE 12;
Structure : VEINS RANGING FROM 1 TO 7 MM IN WIDTH FILLED WITH
WHITE MINERALS + EPIDOTE, VEINS IN PCES 6 + 9 + 11
+ 12 ARE FILLED WITH WHITE MINERALS + CHLORITE A
DARK GREEN MINERAL AND WITHOUT PYRITE, CRACKS WITH
VERTICAL 25 CM OBLIQUE (12) HORIZONTAL (4);
Alteration : MOD;
Comments : GREENISH GREY;
Phenocrysts: OLIVINE
Size(mm): TO 2
Replacement: EPIDOTE
VEINS OF 1 TO 7 MM IN WIDTH ARE FILLED WITH
EPIDOTE AND WHITE MINERALS;
CHLORITE
VEINS IN PCES 6 + 9 + 11 + 12 ARE FILLED WITH
WHITE MINERALS AND CHLORITE;
PYRITE
RARE TINY PYRITE CRYSTALS IN PCE 12;
OTHER
WHITE MINERALS FOUND IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/ 140 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1048.64
Core: 96 Top of Core Depth (m) : 1048.50
Sect: 1 Top of Section Depth(m): 1048.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-13);
Texture : FINE GRAINED, APHYRIC, FRAGMENTS;
Alteration : MOD;
Comments : POOR RECOVERY RESULT OF DROPPING CORE BARREL BACK TO
BOTTOM OF HOLE;
Leg : 83 Top/Bottom Interval(mm): 140/ 230 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1048.73
Core: 96 Top of Core Depth (m) : 1048.50
Sect: 1 Top of Section Depth(m): 1048.64
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 2 (14-21);
Texture : FINE GRAINED, SPARSELY PHYRIC, POSSIBLY PART OF
PILLOW FLOWS;
Structure : POSSIBLY PART OF PILLOW FLOWS;
Alteration : MOD;
Leg : 83 Top/Bottom Interval(mm): 230/ 930 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1049.43
Core: 96 Top of Core Depth (m) : 1048.50
Sect: 1 Top of Section Depth(m): 1048.73
LITHOLOGY: DRILL CUTTINGS;
Piece No. : PCE 3 (24-92);
Alteration : MOD;
Leg : 83 Top/Bottom Interval(mm): 930/1030 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1049.53
Core: 96 Top of Core Depth (m) : 1048.50
Sect: 1 Top of Section Depth(m): 1049.43
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 4 (93-101);
Texture : FINE TO MEDIUM GRAINED, SPARSELY PHYRIC, PART OF
FLOW OR DIKE (MASSIVE);
Structure : PART OF FLOW OR DIKE (MASSIVE);
Alteration : MOD;
Leg : 83 Top/Bottom Interval(mm): 1030/1240 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1049.74
Core: 96 Top of Core Depth (m) : 1048.50
Sect: 1 Top of Section Depth(m): 1049.53
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 5 (103-111), 6 (113-122);
Texture : APHYRIC, MEDIUM GRAINED, FLOW OR DIKE (MASSIVE);
Structure : FLOW OR DIKE (MASSIVE);
Alteration : MOD;
Leg : 83 Top/Bottom Interval(mm): 1240/1340 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1049.84
Core: 96 Top of Core Depth (m) : 1048.50
Sect: 1 Top of Section Depth(m): 1049.74
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 7 (124-132);
Texture : SPARSELY PHYRIC, FINE GRAINED;
Alteration : MOD;
Leg : 83 Top/Bottom Interval(mm): 1340/1400 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1049.90
Core: 96 Top of Core Depth (m) : 1048.50
Sect: 1 Top of Section Depth(m): 1049.84
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 8 (134-139);
Texture : APHYRIC, FINE GRAINED, FRAGMENTS;
Alteration : MOD;
Leg : 83 Top/Bottom Interval(mm): 0/ 120 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1057.62
Core: 97 Top of Core Depth (m) : 1057.50
Sect: 1 Top of Section Depth(m): 1057.50
LITHOLOGY: OL-PLAG SPARSELY TO MODERATELY PHYRIC BASALT;
Piece No. : PCE 1 (2-10);
Texture : SPARSELY TO MODERATELY PHYRIC, VERY VERY FINE
GRAINED;
Structure : VEINS (< .5 MM TO 3 MM) FILLED BY DARK GREEN MINERAL
POSSIBLY CHLORITE;
Alteration : MOD
PLAG FRESH;
Comments : GREYISH GREEN;
Phenocrysts: OLIVINE
Size(mm): 1-2
OL REPLACED BY PROBABLE CHLORITE;
PLAGIOCLASE
Size(mm): TO 1.5
PLAG FRESH;
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY PROBABLE CHLORITE WITH ASSOCIATED
CRYSTALS OF PYRITE OCCURRING, VEINS FILLED BY DARK
GREEN MINERAL POSSIBLY CHLORITE;
PYRITE
CRYSTALS OF PYRITE (<.5 MM) OCCUR;
Leg : 83 Top/Bottom Interval(mm): 120/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1059.00
Core: 97 Top of Core Depth (m) : 1057.50
Sect: 1 Top of Section Depth(m): 1057.62
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 2 (12-19), 3A (22-32), 3B (33-40), 3C (40-47),
4 (50-57), 5 (59-66), 6A (68-75), 6B (76-84),
7 (85-95), 8A (97-105), 8B (105-115), 8C (115-124),
8D (123-130), 8E (131-135), 9 (137-139),
10 (140-148);
Texture : APHYRIC, MEDIUM GRAINED, VERY HOMOGENEOUS ALL ALONG
THIS SECTION EXCEPT THE SIZE OF GRAIN INCREASES
UP TO PCE 6B WHICH MAY BE A DIKE, PCE 8A HAS A
COARSER GRAIN AREA;
Structure : VEINS ARE RARE AND VERY THIN AND ARE FILLED BY PALE
GREENISH GREY MINERAL, POSSIBLY A DIKE (PCE 6B),
PCE 7 HAS A WHITE FIBRO-RADIATED MINERAL OCCURRING I
HUGE 3 CM VUGS;
Alteration : MOD
PCE 8A HAS A COARSER GRAIN AREA WHICH SEEMS TO BE
MORE ALTERED THEN THE BASALT AROUND IT, THE AREA
CONTAINS CHLOR + TRANSPARENT MINERAL + A WHITE
MINERAL, PCE 7 IS VERY ALTERED GREEN;
Comments : GREY;
Vesicles : PCE 7 HAS A WHITE FIBRO RADIATED MINERAL OCCURRING
IN HUGE 3 CM VUGS;
Replacement: CHLORITE
IN ALTERED AREA;
SULFIDES
DISSEMINATED SULFIDES, SIZE (< O.5 MM);
OTHERS
WHITE MINERAL IN ALTERED AREA, TRANSPARENT
MINERAL IN ALTERED AREA;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1060.50
Core: 97 Top of Core Depth (m) : 1057.50
Sect: 2 Top of Section Depth(m): 1059.00
LITHOLOGY: APHYRIC DOLERITIC BASALT;
Piece No. : PCES 1 (3-9), 2A (12-17), 2B (14-19), 3A (22-29),
3B (30-47), 4 (50-59), 5 (62-70), 6A (72-75),
6B (76-83), 6C (84-89), 7 (92-96), 8 (97-100),
9 (102-105), 10 (107-112), 11 (114-119),
12 (121-125), 13 (127-133), 14 (135-140),
15 (142-148);
Texture : APHYRIC, MEDIUM GRAINED TO FINE GRAINED FROM PCES
9-12, A FEW OL PHENOS ON PCE 10, THERE SEEMS TO BE
A GRADUAL DECREASE IN GRAIN SIZE TOWARDS BOTTOM OF
SECTION;
Structure : VERY FEW VEINLETS FILLED WITH DARK GREEN MINERAL
(CHLOR);
Alteration : MOD;
Comments : DARK GREY GREEN, PCES 6B SELECTED FOR INTERLAB
COMPARISON (CHEMISTRY), CONTINUING FROM SECTION 1;
Phenocrysts: OLIVINE
A FEW OL PHENOS ON PCE 10;
Replacement: SULFIDE
MINOR SULFIDE DISSEMINATION;
CHLORITE
VERY FEW VEINLETS FILLED WITH DARK GREEN MINERAL
OR CHLORITE;
Leg : 83 Top/Bottom Interval(mm): 0/ 730 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1061.23
Core: 97 Top of Core Depth (m) : 1057.50
Sect: 3 Top of Section Depth(m): 1060.50
LITHOLOGY: APHYRIC TO PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-7), 2 (9-13), 3 (15-28), 4 (30-38),
5 (39-47), 6 (49-52), 7 (54-59), 8 (61-66),
9 (68-72);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE TO MEDIUM GRAINED,
PCES 1-3 ARE FINER GRAINED, PCES 4-9 ARE MEDIUM
GRAINED WITH A UNIFORM TEXTURE;
Structure : PCES 2 + 3 HAVE CHLORITE VEINS, AT CENTER OF CHLOR
VEINS IS WHITE MATERIAL (POSSIBLY LAUMONTITE AND
QTZ) + A MINOR ACICULAR TAN MINERAL;
Alteration : MOD;
Replacement: CHLORITE
CHLORITE VEINS;
LAUMONTITE
POSSIBLY IN WHITE MATERIAL AT CENTER OF CHLORITE
VEINS;
QUARTZ
POSSIBLY IN WHITE MATERIAL AT CENTER OF CHLORITE
VEINS;
OTHER
MINOR ACICULAR TAN MINERAL IN CENTER OF CHLORITE
VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/ 180 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1062.18
Core: 98 Top of Core Depth (m) : 1062.00
Sect: 1 Top of Section Depth(m): 1062.00
LITHOLOGY: OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-10), 2 (13-17);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED;
Structure : PART OF MASSIVE COOLING UNIT, FRACTURE SURFACE
COATED WITH CHLORITE + COMMON SULFIDES + PYRITE SEE
PCE 1;
Alteration : MOD;
Comments : PART OF MASSIVE COOLING UNIT;
Replacement: CHLORITE
COAT FRACTURE SURFACE ON PCE 1;
SULFIDE
COATS FRACTURE SURFACE ON PCE 1;
PYRITE
COATS FRACTURE SURFACE ON PCE 1;
Leg : 83 Top/Bottom Interval(mm): 180/ 400 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1062.40
Core: 98 Top of Core Depth (m) : 1062.00
Sect: 1 Top of Section Depth(m): 1062.18
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 3 (19-24), 4 (26-31), 5 (33-39);
Texture : APHYRIC, FINE GRAINED, A COARSE VARIOLITIC ZONE AT
Structure : TOP OF PCE 3 RESEMBLING A CHILLED DIKE MARGIN;
Alteration : MOD;
Comments : COOLING UNIT BOUNDARIES ARE AT 20 CM AND 40 CM AND
AT 72 CM;
Leg : 83 Top/Bottom Interval(mm): 400/ 770 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1062.77
Core: 98 Top of Core Depth (m) : 1062.00
Sect: 1 Top of Section Depth(m): 1062.40
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCES 6 (42-50), 7 (53-58), 8 (59-64), 9 (66-69),
10 (71-76);
Texture : MOD PHYRIC, FINE GRAINED;
Structure : COMMON VEINS ABOUT 2 MM WIDE RIMMED WITH CHLORITE
(DARK GREEN CLAY MINERAL) WITH CENTERS FILLED WITH
WHITE MATERIAL, ALSO COMMON SULFIDES IN VEINS, PCE 7
EXHIBITS COMPLEX CROSS-CUTTING VEIN RELATIONSHIPS;
Alteration : MOD;
Replacement: CHLORITE
IN VEINS;
SULFIDES
COMMON SULFIDES IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 770/ 870 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1062.87
Core: 98 Top of Core Depth (m) : 1062.00
Sect: 1 Top of Section Depth(m): 1062.77
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 11 (78-86);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED;
Alteration : MOD;
Replacement: SULFIDES
COMMON SULFIDES DISSEMINATED IN MATRIX;
Leg : 83 Top/Bottom Interval(mm): 0/1490 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1072.99
Core: 99 Top of Core Depth (m) : 1071.50
Sect: 1 Top of Section Depth(m): 1071.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-5), 2 (7-11), 3 (13-20), 4 (22-28),
5 (30-34), 6A (35-40), 6B (35-39), 6C (41-50),
7 (54-60), 8 (63-66), 9 (68-76), 10 (78-82),
11 (84-88), 12 (90-93), 13 (95-99), 14 (100-107),
15 (109-116), 16 (118-125), 17 (126-133),
18A (135-140), 18B (142-147);
Texture : APHYRIC, MEDIUM GRAINED, PCES 14-17 BECOME
PROGRESSIVELY FINER YET ARE STILL APHYRIC AND ARE
PROBABLY PART OF THE SAME COOLING UNIT AS PCES 1-13,
POSSIBLE CONTACT IN PCE 18 IS VERY FINE GRAINED
APHYRIC BASALT WHICH IS BRECCIATED AT TOP;
Structure : ON PCES 1-13 MASSIVE COOLING UNIT, FAIRLY COMMON
FRACTURES FILLED WITH DARK GREEN CLAY MINERAL AND
WHITE MINERAL + COLORLESS RADIAL PRISMATIC MINERAL
COMMONLY OCCUR IN THE CENTER OF THE CLAY FILLED
VEINS OFTEN WITH EPIDOTE (SEE PCES 1 + 3-5 + 7 + 9 +
10 + 12 + 14 + 15 + 17 + 18, VEINS GENERALLY EXHIBIT
SEQUENCES OF CLAY NEXT TO EPIDOTE WITH WHITE AND
PRISMATIC MINERALS IN CENTER OF CLAY FILLED VEINS,
SULFIDES OBSERVED ON FRACTURED SURFACES OF PCES 2 +
3 + 5 + 11 AND IN OTHER VEINS AS WELL, PCES 14-17
ARE HIGHLY FRACTURED, PCE 18 IS BRECCIATED AT TOP
AND THE REMAINDER IS HIGHLY FRACTURED;
Alteration : MOD;
Comments : POSSIBLE CONTACT ON PCE 18, ON PCES 1-13 MASSIVE
COOLING UNIT, PCES 14-17 ARE PROBABLY PART OF THE
SAME COOLING UNIT AS PCES 1-13;
Replacement: CLAY MINERALS
IN FRACTURES;
OTHER
VERY HARD COLORLESS RADIAL PRISMATIC MINERAL
POSSIBLY QTZ WHICH COMMONLY OCCURS IN THE CENTERS
OF CLAY FILLED VEINS;
SULFIDES
OBSERVED ON FRACTURED SURFACE OF PCES 2 + 3 + 5 +
11 AND IN OTHER VEINS AS WELL;
EPIDOTE
IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1150 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1074.15
Core: 99 Top of Core Depth (m) : 1071.50
Sect: 2 Top of Section Depth(m): 1073.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (3-11), 2 (13-20), 3 (22-31), 4 (33-41),
5 (43-51), 6 (53-60), 7 (62-72), 8 (74-78),
9 (81-86), 10 (87-91), 11 (93-102), 12 (104-114);
Texture : APHYRIC, VERY FINE GRAINED, PCE 1 IS APHYRIC VERY
FINE GRAINED BASALT, PCE 2 IS VERY FINE GRAINED
BRECCIATED BASALT, PCES 3-6 ARE VERY FINE GRAINED
CHILLED BASALT, PCES 7-12 ARE VERY FINE GRAINED
APHYRIC BASALT;
Structure : PCE 1 IS CUT BY VEINS FILLED WITH QTZ + QTZ AND
CHLORITE + WHITE MINERAL + EPIDOTE, PCE 2 HAS
FRACTURES FILLED WITH EPIDOTE AND SOME UNIDENTIFIED
MATERIAL, PCES 3-6 HAVE MANY VEINS FILLED WITH
DARK GREEN MINERAL (CHLORITE) + QTZ, PCES 7-12
HAVE CHLORITE VEINLETS, PCE 7 HAS AN EPIDOTE VEIN;
Alteration : MOD;
Comments : PCE 2 INTRUDED FROM BELOW TO A CHILLED CONTACT WHERE
THE UNDERLYING BASALT SEQUENCE IS CHILLED AGAINST
THE OVERLYING UNIT, PCES 3-6 ARE LIGHT GREY, PCES
7-12 ARE GREENISH GREY;
Replacement: QUARTZ
IN VEINS;
CHLORITE
IN VEINS AND VEINLETS;
EPIDOTE
IN VEINS, EPIDOTE VEIN IN PCE 7;
OTHER
WHITE MINERAL IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/ 470 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1080.97
Core: 100 Top of Core Depth (m) : 1080.50
Sect: 1 Top of Section Depth(m): 1080.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-10), 2A (11-23), 2B ( 22-28), 3 (29-35),
4 (37-46);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, COARSENING FROM
PCES 1-4;
Structure : QTZ + WHITE MINERAL + EPIDOTE VEINING IN PCES 2A +
2B AND PARTICULARLY PCE 4;
Alteration : MOD;
Comments : GREY;
Replacement: QUARTZ
EPIDOTE
Leg : 83 Top/Bottom Interval(mm): 470/ 800 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1081.30
Core: 100 Top of Core Depth (m) : 1080.50
Sect: 1 Top of Section Depth(m): 1080.97
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 5 (47-53), 6 (55-60), 7 ( 62-66), 8 (68-72),
9 (74-79);
Texture : APHYRIC TO SPARSELY PHYRIC, BASALT RELATIVELY COARSE
GRAINED WITH NO FINING, CHILLED UNITS IN PCES 5 + 9;
Structure : UNIT IS CHARACTERISTICALLY FINELY VEINED BY DARK
GREEN CLAYS, STRONGLY VEINED;
Alteration : MOD;
Comments : CHILLED UNITS IN PCES 5 + 9;
Phenocrysts: OLIVINE ( 1-2%)
Size(mm): 2
Replacement: CLAY MINERALS
VEINED BY DARK GREEN CLAYS;
Leg : 83 Top/Bottom Interval(mm): 800/1100 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1081.60
Core: 100 Top of Core Depth (m) : 1080.50
Sect: 1 Top of Section Depth(m): 1081.30
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 10 (82-89), 11 (91-99), 12 (101-110);
Texture : APHYRIC, BRECCIATED, IN PCES 10 + 12 AN INTRUSIVE
MARGIN IS EVIDENT WHERE FINE MATERIAL IS AGAINST
BRECCIATED COARSE BASALT, ON PCE 12 TECTONIC
BRECCIATION POSSIBLE;
Structure : FRACTURED, HIGHLY FRACTURED - POSSIBLE PRECURSOR TO
DIKE INTRUSION;
Alteration : MOD;
Leg : 83 Top/Bottom Interval(mm): 1100/1490 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1081.99
Core: 100 Top of Core Depth (m) : 1080.50
Sect: 1 Top of Section Depth(m): 1081.60
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 13A (111-119), 13B (118-123), 14 (125-130),
15 (132-139), 16 (142-148);
Texture : MOD PHYRIC, FINE TO MEDIUM GRAINED;
Structure : IN PCES 13A AND 13B BLUE GREEN CLAY MINERALS FILL
NETWORK OF VEINS, CRACKS EXCLUDING FINE CRACKS IN
BRECCIA AND 13A AND 13B ARE VERTICAL (4)
HORIZONTAL (6) AND OBLIQUE (16);
Alteration : MOD;
Phenocrysts: OLIVINE ( 2%)
Size(mm): 2
PLAGIOCLASE ( 2%)
Size(mm): 2-3
CLINOPYROXENE ( 1-2%)
Size(mm): 5-6
Replacement: CLAY MINERALS
BLUE GREEN CLAY MINERALS FILL NETWORK OF VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1083.50
Core: 100 Top of Core Depth (m) : 1080.50
Sect: 2 Top of Section Depth(m): 1082.00
LITHOLOGY: PLAG-OL-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-8), 2 (10-14), 3 (16-24), 4 (26-32),
5 (33-42), 6 (43-51), 7 (53-60), 8 (62-67),
9 (69-74), 10 (76-84), 11 (85-91), 12 (93-98),
13 (101-106), 14 (108-111), 15 (113-116),
16 (117-121), 17 (123-126), 18 (128-131),
19 (133-139), 20 (141-148);
Texture : SPARSELY PHYRIC, FINE GRAINED, FEW CLOTS OF
SUBOPHITIC CPX + PLAG ALTHOUGH DIFFICULT TO TELL IN
HAND SPECIMEN, PCES 2 + 3 ARE BRECCIATED AND FINER
GRAINED THAN THE REMAINING SECTION, PCE 10 EXPOSES
A QUENCH CONTACT OF VERY FINE GRAINED TO GLASSY ON
ONE SIDE TO FINE GRAINED ON THE OTHER, PCE 3 HAS A
QUENCH CONTACT AGAINST THE BRECCIA;
Structure : CRACKS ARE OBLIQUE (7) HORIZONTAL (3) AND VERTICAL
(4);
Alteration : MOD
ALTERATION IS APPARENTLY NOT VERY EXTENSIVE
EXCEPT AT PLACES WHERE BRECCIATION IS EXTENSIVE -
HERE THE MATRIX-CEMENT IS DARK GREEN AT THE
BORDERS AND LIGHTER GREEN TOWARD THE CENTERS,
PCE 3 HAS A LIGHT PISTACHIO GREEN ALTERATION
MINERAL IN THE VEIN, ALTHOUGH NOT EXPOSED ON
UPPER SURFACE PCE 3 HAS A QUENCH CONTACT AGAINST
BRECCIA, MINOR PYRITE IS ALSO PRESENT;
Comments : PCE 10 HAS A QUENCH CONTACT, PCE 3 ALSO HAS A
QUENCH CONTACT AGAINST THE BRECCIA;
Phenocrysts: CLINOPYROXENE
PLAGIOCLASE
FEW CLOTS OF SUBOPHITIC CPX + PLAG ALTHOUGH
DIFFICULT TO TELL IN HAND SPECIMEN;
Replacement: PYRITE
MINOR PYRITE PRESENT;
OTHER
PCE 3 HAS A LIGHT PISTACHIO GREEN ALTERATION
MINERAL IN THE VEIN, LIGHT GREEN MAY BE EPIDOTE
HOWEVER IDENTIFICATION IS UNCERTAIN;
Leg : 83 Top/Bottom Interval(mm): 0/1300 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1084.80
Core: 100 Top of Core Depth (m) : 1080.50
Sect: 3 Top of Section Depth(m): 1083.50
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (3-9), 2 (11-17), 3 (19-24), 4 (26-34),
5 (36-40), 6 (43-49), 7 (50-54), 8 (56-65),
9 (67-74), 10 (76-80), 11 (82-85), 12 (87-91),
13 (93-102), 14 (104-109), 15 (111-119),
16 (121-126);
Texture : APHYRIC TO SPARSELY PHYRIC, MEDIUM GRAINED, PCE 8
IS OL-PLAG MOD PHYRIC, IN PCES 9-15 THE PARTS ARE
SMALL ROUNDED AND VARY IN GRAIN SIZE, PCE 10 IS FINE
GRAINED AND APHYRIC, PCE 8 IS MOD PHYRIC, PCES 9-15
HAVE PHENOS AMOUNTS WHICH EXHIBIT NO GENERAL
TENDENCY AND ARE NOT REPRESENTATIVE;
Structure : VEINLETS ARE VERY THIN (<0.5 TO 1.5 MM) AND SPARSE,
ON PCE 1 WHITE MINERAL (LAUMONITE APPEARANCE) IN A
VEIN, PCE 3 AND 15 ALSO HAVE WHITE MINERAL;
Alteration : MOD
YELLOWISH COLORATION OF THE OUTER SURFACES FROM
PCE 4 TO END OF SECTION;
Comments : GREY, PCE 10 IS GREYISH GREEN, YELLOWISH COLORATION
OF THE OUTER SURFACES FROM PCE 4 TO END OF SECTION;
Phenocrysts: OLIVINE ( 0-2%)
Size(mm): .5-3
OL REPLACED BY DARK GREEN MINERAL;
PLAGIOCLASE ( 1%)
Size(mm): T0 1.5
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL POSSIBLY CHLOR;
SMECTITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL POSSIBLY
SMECTITE;
SULFIDES
OCCUR IN PCE 8 + DISSEMINATED IN THE ROCK;
LAUMONTITE
IDENTIFICATION UNCERTAIN FOR LAUMONITE, WHITE
MINERAL IN VEIN WITH LAUMONITE APPEARANCE;
EPIDOTE ( 0%)
Leg : 83 Top/Bottom Interval(mm): 0/ 100 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1089.60
Core: 101 Top of Core Depth (m) : 1089.50
Sect: 1 Top of Section Depth(m): 1089.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (3-9);
Texture : APHYRIC, VERY FINE GRAINED;
Alteration : FRESH;
Comments : BLACKISH GREY;
Leg : 83 Top/Bottom Interval(mm): 100/ 640 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1090.14
Core: 101 Top of Core Depth (m) : 1089.50
Sect: 1 Top of Section Depth(m): 1089.60
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 2 (11-16), 3A (18-29), 3B (28-34), 3C (34-39),
4 (41-56), 5 (57-63);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED, PCES 2 + 3A + 3C
SHOW CHILLED MARGINS, PCE 4 HAS PROBABLE CHILLED
MARGIN, PCE 4 HAS PARTS WITH VERY FINE GRAINED GREY
BASALT WHICH ARE PROBABLY THE ELEMENTS OF A BRECCIA,
PCE 5 IS BRECCIATED;
Structure : PCE 4 HAS THICK VEINS INCLUDING DARK GREEN CLAY
MINERAL POSSIBLY CHLOR OR SMEC + EPIDOTE + WHITE
ELONGATED MINERAL + PYRITE, ALTERATION VEINS;
Alteration : FRESH
ALTERATION IS MORE PRONOUNCED IN THE HOST ROCK
WITH DARK GREEN MINERAL + WHITE MINERALS IN THIN
(< 1 MM) VEINS AND DARK GREEN MINERAL LOCATED
BETWEEN THE MARGIN AND HOST ROCK, PCE 5 IS VERY
ALTERED AND BRECCIATED (DARK GREEN MINERAL +
PYRITE + WHITE MINERALS), ALTERATION VEINS
(.5-1.5 MM) FILLED WITH DARK GREEN MINERAL +
COMMON PYRITE + OCCASIONALLY WHITE MINERAL;
Replacement: EPIDOTE
VEINS;
CLAY MINERALS
DARK GREEN CLAY MINERAL IN VEINS;
OTHER
WHITE MINERAL IN VEINS;
CHLORITE
POSSIBLY DARK GREEN MINERAL IN VEINS,
IDENTIFICATION UNCERTAIN;
SMECTITE
POSSIBLY DARK GREEN MINERAL IN VEINS,
IDENTIFICATION UNCERTAIN;
Leg : 83 Top/Bottom Interval(mm): 640/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1091.00
Core: 101 Top of Core Depth (m) : 1089.50
Sect: 1 Top of Section Depth(m): 1090.14
LITHOLOGY: OL-PLAG-CPX SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 6 (64-71), 7 (74-81), 8 (83-88), 9 (89-96),
10A (98-105), 10B (107-114), 10C (115-122),
10D (123-126), 10E (127-130), 10F (130-138),
10G (139-145), 10H (145-150);
Texture : SPARSELY TO MOD PHYRIC, FINE GRAINED, PCE 7 HAS
CHILLED MARGIN, PCES 10F-10H SHOW BRECCIATED CHILLED
MARGIN, IN PCES 10F-10H THE CEMENT IS NOT ABUNDANT
AND THE ELEMENTS ARE APHYRIC VERY FINE GRAINED
BASALT, A PART OF PCE 10H IS HIGHLY BRECCIATED;
Structure : THIN VEINS (<1 MM);
Alteration : FRESH
ALTERATION CONSISTS OF SPARSE WHITE MINERALS IN
THIN (< 1 MM) VEINS, THE CEMENT OF PCES 10F-10H IS
NOT ABUNDANT AND IS REPLACED BY DARK GREEN
MINERAL;
Comments : GREY, THE ELEMENTS OF 10F-10H ARE VERY FINE GRAINED
BASALT AND SHOW TWO DIFFERENT COLORS, THE VERY VERY
FINE BASALT IS LIGHT GREY WHEREAS THE FINE GRAINED
BASALT (PROBABLY HOST-ROCK) IS DARKER GREY + THE
CONTACT BETWEEN THESE TWO BASALTS IS VERY SHARP AND
SOMETIMES ANGULAR;
Phenocrysts: OLIVINE ( 1%)
Size(mm): 1-4
OL REPLACED BY DARK GREEN MINERAL (WITHOUT
PYRITE);
PLAGIOCLASE ( 1%)
Size(mm): .5-2
CLINOPYROXENE
Size(mm): TO 6
CPX FRESH;
Replacement: OTHER
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL (WITHOUT
PYRITE);
OTHER
CEMENT OF PCES 10F-10H IS NOT ABUNDANT AND IS
REPLACED BY DARK GREEN MINERAL;
Leg : 83 Top/Bottom Interval(mm): 0/1250 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1092.25
Core: 101 Top of Core Depth (m) : 1089.50
Sect: 2 Top of Section Depth(m): 1091.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-9), 2 (11-19), 3 (22-27), 4 (29-39),
5 (41-45), 6 (47-52), 7 (54-67), 8 (69-73),
9 (75-84), 10 (86-96), 11 (98-104), 12 (106-113),
13 (116-124);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, GRAIN SIZE COARSENS
FROM PCE 1 TO PCE 13, PCES 1-6 DESCRIBED AS FINE AND
PCES 6-13 ARE MEDIUM BUT DO NOT APPEAR TO REPRESENT
SEPARATE UNITS;
Structure : THERE ARE A FEW CRACKS HOWEVER THERE DOES NOT APPEAR
TO BE ANYTHING FILLING THESE, CRACKS ARE OBLIQUE (5)
HORIZONTAL (8) AND VERTICAL (1);
Alteration : MOD
ALTERATION VERY MINIMAL WITH FEW CRACKS;
Comments : GREY;
Replacement: SULFIDES
VERY MINOR SULFIDES;
Leg : 83 Top/Bottom Interval(mm): 0/1100 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1099.60
Core: 102 Top of Core Depth (m) : 1098.50
Sect: 1 Top of Section Depth(m): 1098.50
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (3-11), 2 (13-21), 3 (23-33), 4 (35-41),
5A (43-51), 5B (53-63), 6 (65-74), 7A (76-84),
7B (85-92), 8 (94-109);
Texture : APHYRIC TO SPARSELY PHYRIC, MEDIUM GRAINED, NO
CHILLED MARGINS, THIS SECTION IS UNIFORM AND FINER
GRAINED THAN THE END OF CORE 101 SECTION 2 BUT COULD
BE THE SAME UNIT AS LOWER PART OF CORE 101 SECTION
2;
Structure : THIN (< 1 MM) VEINS FILLED WITH DARK GREEN MINERAL,
WHITE RADIATED MINERAL IN CRACKS OF PCES 1 + 2 + 3,
PYRITE CRYSTALS IN CRACKS ASSOCIATED WITH DARK GREEN
MINERAL IN PCES 5 + 7;
Alteration : MOD
YELLOWISH COLORATION ON THE OUTER SURFACES OF
PCES 7B AND 8;
Comments : GREY, YELLOWISH COLORATION ON THE OUTER SURFACES OF
PCES 7B AND 8;
Phenocrysts: OLIVINE
Size(mm): 1-3
OL REPLACED BY DARK GREEN MINERAL (CHLORITE);
PLAGIOCLASE
Size(mm): TO 2
CLINOPYROXENE ( 0%)
NO CPX;
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL (CHLORITE);
PYRITE
PYRITE CRYSTALS IN CRACKS ASSOCIATED WITH DARK
GREEN MINERAL IN PCES 5 + 7;
Leg : 83 Top/Bottom Interval(mm): 0/ 300 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1107.80
Core: 103 Top of Core Depth (m) : 1107.50
Sect: 1 Top of Section Depth(m): 1107.50
LITHOLOGY: APHYRIC BASALT;
PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (3-6), 2 (8-16), 3 (18-22), 4 (24-29);
Texture : FINE GRAINED, PCE 1 IS APHYRIC, PCE 2 IS APHYRIC
BASALT FRAGMENT SURROUNDED BY CHILLED SPARSELY
PHYRIC BASALT WHICH IS BRECCIATED AND CONTAINS SOME
ALTERED GLASS, THE ALTERED GLASS CROSS CUTS THE
APHYRIC BASALT FRAGMENT, PCES 2 + 4 HAVE CHILLED
MARGINS AGAINST ANOTHER ROCK;
Alteration : MOD
PCE 2 CONTAINS SOME ALTERED GLASS, ALTERED GLASS
ON PCE 2 CROSS CUTS THE APHYRIC BASALT FRAGMENT;
Comments : PCE 1 IS DARK GREY, PCE 2 HAS DARK GREY BASALT
FRAGMENT SURROUNDED BY LIGHT GREY BASALT, PCE 3
CONSISTS OF THE SAME MATERIAL AS THE OUTER MATERIAL
OF PCE 2, PCE 4 WITH CONTACT SIMILAR TO PCE 2 WHICH
MAY BE PART OF BRECCIA BUT ONLY SHOWS ONE ROCK
CHILLED AGAINST ANOTHER;
Leg : 83 Top/Bottom Interval(mm): 300/ 820 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1108.32
Core: 103 Top of Core Depth (m) : 1107.50
Sect: 1 Top of Section Depth(m): 1107.80
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
OL-PLAG MOD PHYRIC BASALT;
APHYRIC BASALT;
Piece No. : PCES 5 (31-35), 6 (37-41), 7A (43-47), 7B (48-60),
7C (61-66), 8 (68-76), 9 (78-81);
Texture : PCE 5 CONSISTS OF FINE GRAINED OL-PLAG MOD PHYRIC
BASALT CUT BY A VEIN OF CHILLED PLAG-OL MOD PHYRIC
BASALT, PCES 5 + 6 + 7A + 7C + 8 + 9 HAVE CHILLED
MARGINS AGAINST ANOTHER ROCK, PCE 7 IS FINE GRAINED,
ISOLATED CHILLED MARGIN AT BOTTOM OF PCE 7C, PHENOS
ARE CLUSTERED ABOUT A PLANE IN PCES 5 + 7 AS
INDICATED BY SPOTS IN GRAPHIC REPRESENTATION;
Structure : PCE 5 IS CUT BY A 8 MM VEIN OF CHILLED MOD PLAG-OL
PHYRIC BASALT, VEINS WITH MOSTLY CHLORITE NOT IN
BRECCIAS ARE OBLIQUE (6) HORIZONTAL (2) AND
VERTICAL OF 20 CM WITH AVG THICKNESS OF 1 MM;
Alteration : MOD;
Comments : PCE 5 HAS GREENISH GREY BASALT CUT BY A PALE GREY
VEIN, PCE 7 HAS A CHILLED CONTACT OF PLAG-OL MOD
PHYRIC BASALT AGAINST APHYRIC BASALT AT TOP (PCE 7A)
AND ISOLATED CHILLED MARGIN AT BOTTOM (PCE 7C),
PCES 6 + 8 + 9 WITH CONTACT SIMILAR TO PCE 2 MAY BE
PART OF BRECCIA HOWEVER IT ONLY SHOWS ONE ROCK
CHILLED AGAINST ANOTHER;
Replacement: CHLORITE
IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 820/1290 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1108.79
Core: 103 Top of Core Depth (m) : 1107.50
Sect: 1 Top of Section Depth(m): 1108.32
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCES 10 (83-89), 11 (91-96), 12 (98-102),
13 (104-109), 14 (111-129);
Texture : FINE TO MEDIUM GRAINED, PHYRIC;
Alteration : MOD;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1118.00
Core: 104 Top of Core Depth (m) : 1116.50
Sect: 1 Top of Section Depth(m): 1116.50
LITHOLOGY: OL-PLAG-CPX SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 1 (0-8), 2 (11-21), 3 (22-29), 4 (31-34),
5A (35-41), 5B (43-49), 6 (51-59), 7 (61-65),
8 (67-70), 9 (72-77), 10 (79-85), 11 (86-90),
12 (92-99), 13 (101-109), 14 (110-114),
15 (115-122), 16 (123-129), 17 (130-138),
18 (140-142), 19 (144-149);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM GRAINED, SUBOPHITIC
TEXTURE, SECTION COARSENS FROM TOP TO BOTTOM AND
APPARENTLY CONTINUES INTO CORE 104 SECTION 2;
Structure : MINOR FRACTURES PRESENT, REMNANT OF VEIN ON PCE 5A
IS 2.5 MM WIDE AND FILLED WITH DARK GREEN MINERAL
(CHLORITE), CRACKS HAVE OBLIQUE (3) HORIZONTAL (5)
AND VERTICAL (1);
Alteration : MOD
OL ALTERED TO DARK MINERAL, PLAG + CPX ARE
RELATIVELY UNALTERED;
Comments : GREY;
Phenocrysts: OLIVINE ( 1-3%)
Size(mm): TO 2
OL ALTERED TO DARK MINERAL;
PLAGIOCLASE
PLAG IS RELATIVELY UNALTERED;
CLINOPYROXENE
CPX IS RELATIVELY UNALTERED;
Replacement: CHLORITE
VEIN FILLED WITH DARK GREEN MINERAL;
PYRITE
OCCURS DISSEMINATED IN ROCK;
Leg : 83 Top/Bottom Interval(mm): 0/1470 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1119.47
Core: 104 Top of Core Depth (m) : 1116.50
Sect: 2 Top of Section Depth(m): 1118.00
LITHOLOGY: OL-PLAG-CPX SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-13), 2 (13-18), 3 (20-46), 4A (48-55),
4B (56-63), 4C (64-73), 4D (74-89), 5 (91-97),
6 (99-106), 7 (108-111), 8 (113-119), 9 (120-130),
10 (131-137), 11 (138-146);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM GRAINED;
Structure : MATERIAL IS MASSIVE WITH LITTLE OR NO FRACTURING
OR VEINING OTHER THAN WITH DARK GREEN MATERIAL,
WHITE CRYSTALLINE VEIN IN PCE 4D ASSOCIATED WITH
GREEN MATERIAL, PCES 4A + 4B HAVE PRONOUNCED
ALTERATION SYMMETRICALLY ABOUT A DARK GREEN VEIN,
CRACKS ARE VERTICAL (5) HORIZONTAL (1) AND
OBLIQUE (2);
Alteration : MOD
PCES 4A-4B HAVE PRONOUNCED ALTERATION ABOUT
5 CM SYMMETRICALLY ABOUT A DARK GREEN VEIN,
RELATIVELY FRESH BASALTS IN PCES 3 AND 4C WHICH
APPEAR DARK GREY ARE ALTERED TO A GREEN GREY COLOR
BY REPLACEMENT OF THE GROUNDMASS, ON PCE 6 SAME
ALTERATION AS IN PCES 4A + 4B DUE TO LOCAL VEIN;
Replacement: OTHER
GREEN MATERIAL, VEINING WITH DARK GREEN MATERIAL,
WHITE CRYSTALLINE VEINS IN PCE 4D ASSOCIATED
WITH GREEN MATERIAL;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1121.00
Core: 104 Top of Core Depth (m) : 1116.50
Sect: 3 Top of Section Depth(m): 1119.50
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (0-9), 2 (11-14), 3 (16-19), 4 (21-24),
5A (26-34), 5B (35-40), 6 (42-47), 7 (49-57),
8 (59-61), 9 (63-68), 10 (69-77), 11 (79-84),
12 (85-89), 13 (91-94), 14 (95-99), 15 (100-105),
16 (106-111), 17 (113-119), 18 (120-123),
19 (125-130), 20 (132-140), 21 (142-148);
Texture : MOD PHYRIC, MEDIUM GRAINED, OVERALL SECTION GRAIN
SIZE DIMINISHES FROM TOP OF SECTION TO PCE 20,
PCE 21 IS AS COARSE AS THE CENTER OF THE SECTION;
Structure : CRACKS ARE VERTICAL (1);
Alteration : MOD
PLAG AND CPX RELATIVELY UNALTERED, ALTERATION IN
GENERAL NOT EXTENSIVE, PCE 7 HAS AN UNUSUAL
PATCHY TYPE OF ALTERATION WHICH SEEMS TO HAVE
ATTACKED THE INTERSTICES IN SELECTIVE AREAS WHERE
THE PLAG CLUSTERS ARE ACCENTUATED;
Comments : CORE 104 SECTION 1 TO CORE 104 SECTION 3 APPEAR TO
BE A CONTINUOUS LITHOLOGICAL UNIT, GREY;
Phenocrysts: OLIVINE ( 3-4%)
Size(mm): 1-2
OL REPLACED BY DARK GREEN MINERAL (CHLORITE);
PLAGIOCLASE
PLAG RELATIVELY UNALTERED, PCE 7 HAS ALTERATION
WHICH SEEMS TO HAVE ATTACKED THE INTERSTICES IN
AREAS WHERE PLAG CLUSTERS ARE ACCENTUATED;
CLINOPYROXENE
CPX RELATIVELY UNALTERED;
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL (CHLOR);
Leg : 83 Top/Bottom Interval(mm): 0/ 460 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1125.96
Core: 105 Top of Core Depth (m) : 1125.50
Sect: 1 Top of Section Depth(m): 1125.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (3-9), 2 (12-18), 3 (21-24), 4 (26-29),
5 (31-36), 6 (38-44);
Texture : APHYRIC, FINE GRAINED;
Alteration : MOD;
Comments : GREY;
Leg : 83 Top/Bottom Interval(mm): 460/1300 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1126.80
Core: 105 Top of Core Depth (m) : 1125.50
Sect: 1 Top of Section Depth(m): 1125.96
LITHOLOGY: APHYRIC TO OL-PLAG-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 7 (46-52), 8 (54-60), 9 (62-69), 10 (71-76),
11 (78-81), 12 (83-89), 13 (90-97), 14 (99-105),
15 (107-113), 16 (115-121), 17 (124-129);
Texture : APHYRIC TO SPARSELY PHYRIC, MEDIUM GRAINED, PCES 16
AND 17 ARE MORE COARSE GRAINED THAN PCES 7-15, NO
CHILLED MARGIN;
Structure : VEINS ARE SPARSE VERY THIN (<.5 MM) FILLED WITH
DARK GREEN MINERAL OR LIGHT GREEN MINERAL, IN PCES
2 AND 6 SLIGHT ZONATIONS AROUND VEINS OF DARK GREEN
MINERAL, SPARSE SULFIDE IN VEIN OF DARK GREEN
MINERAL IN PCE 2, WHITE MINERAL AT SURFACE OF A
CRACK, ON PCES 7 AND 8 YELLOWISH GREEN MINERAL IN
AN EXPOSED CRACK WHICH IS DIFFERENT FROM EPIDOTE;
Alteration : MOD
CPX FRESH, ZONATIONS AROUND VEINS;
Comments : GREY, YELLOWISH COLORATION ON OUTER SURFACES OF
PCES 10-17;
Phenocrysts: OLIVINE
Size(mm): .5-3
OL REPLACED BY DARK GREEN MINERAL WITHOUT
ASSOCIATED PYRITE;
CLINOPYROXENE
Size(mm): TO 4
FRESH;
Replacement: OTHER
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL;
SULFIDE
SPARSE SULFIDE IN VEIN OF DARK GREEN MINERAL ON
PCE 2, NO DISSEMINATED SULFIDES;
UNIDENTIFIED
YELLOWISH GREEN MINERAL IN AN EXPOSED CRACK IN
PCES 7 + 8 AND SEEMS TO BE DIFFERENT FROM EPIDOTE;
Leg : 83 Top/Bottom Interval(mm): 0/ 630 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1135.13
Core: 106 Top of Core Depth (m) : 1134.50
Sect: 1 Top of Section Depth(m): 1134.50
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (3-12), 2 (14-21), 3 (23-30), 4 (32-38),
5 (41-44), 6 (47-52), 7 (54-62);
Texture : APHYRIC TO SPARSELY PHYRIC, MEDIUM GRAINED, PCE 7
IS FINER GRAINED;
Structure : VEINS (< 1 MM) IN WIDTH FILLED WITH DARK GREEN
MINERAL, FOR MORE INFORMATION ON VEINS SEE
ALTERATION;
Alteration : MOD
ALTERATION IN SOME VEINS, VEINS < 1 MM IN WIDTH
ARE FILLED WITH DARK GREEN MINERAL, ON PCE 3
YELLOWISH GREEN MINERAL (CRYSTALS CANNOT BE
DISTINGUISHED) ONLY ON ONE SIDE OF VEIN OF DARK
GREEN MINERAL, VEINS OF 1-5 MM WIDE ARE FILLED BY
A WHITE MINERAL;
Comments : GREY;
Phenocrysts: PLAGIOCLASE
IDENTIFICATION OF PLAG UNCERTAIN;
Replacement: OTHER
WHITE MINERAL IN VEINS;
OTHER
DARK GREEN MINERAL IN VEINS;
SULFIDE ( 0%)
NO SULFIDES IN ROCKS AND IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 630/ 800 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1135.30
Core: 106 Top of Core Depth (m) : 1134.50
Sect: 1 Top of Section Depth(m): 1135.13
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCES 8 (64-69), 9 (71-79);
Texture : ELEMENTS (< 1 TO 8 MM) ARE VERY FINE GRAINED, CEMENT
COMPOSED OF DARK GREEN MINERAL, PCE 9 IS BRECCIA
+ FINE GRAINED BASALT CONSISTING OF SMALL PIECES AND
IS NOT REPRESENTATIVE;
Alteration : MOD;
Comments : CEMENT COMPOSED OF DARK GREEN MINERAL;
Replacement: OTHER
CEMENT COMPOSED OF DARK GREEN MINERAL;
Leg : 83 Top/Bottom Interval(mm): 800/1100 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1135.60
Core: 106 Top of Core Depth (m) : 1134.50
Sect: 1 Top of Section Depth(m): 1135.30
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 10 (81-90), 11 (92-99), 12 (101-107);
Texture : SLIGHTLY BRECCIATED, MOD PHYRIC, FINE TO MEDIUM
GRAINED;
Structure : ZONATION ALONG VEINS;
Alteration : MOD
ZONATION ALONG VEINS, STRONG YELLOWISH COLORATION
ON THE OUTER SURFACES OF THE ENTIRE SECTION, PLAG
POSSIBLY FRESH;
Comments : STRONG YELLOWISH COLORATION ON THE OUTER SURFACES
OF THE ENTIRE SECTION;
Phenocrysts: OLIVINE
Size(mm): TO 2
OL REPLACED BY DARK GREEN MINERAL;
PLAGIOCLASE
Size(mm): TO 3
PLAG POSSIBLY FRESH;
Replacement: OTHER
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL;
Leg : 83 Top/Bottom Interval(mm): 0/ 450 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1143.95
Core: 107 Top of Core Depth (m) : 1143.50
Sect: 1 Top of Section Depth(m): 1143.50
LITHOLOGY: APHYRIC BASALT;
BRECCIA;
Piece No. : PCES 1 (1-4), 2 (6-13), 3 (16-19), 4 (21-24),
5 (26-34), 6 (37-44);
Texture : PCES 1-5 ARE FINE GRAINED APHYRIC BASALT ON RIGHT
SIDE OF CORE WITH CHILLED MARGIN AGAINST FINE
GRAINED BASALT BRECCIA ON LEFT SIDE OF CORE (ARCHIVE
HALF), PCE 6 CONSISTS ONLY OF FINE GRAINED BASALT
BRECCIA CEMENTED MOSTLY WITH CHLORITE BUT ALSO WHITE
MINERALS AND POSSIBLY MINOR EPIDOTE;
Alteration : MOD;
Comments : PCES 1-5 ARE PALE GREY ON RIGHT SIDE AND DARK GREY
ON LEFT (ARCHIVE HALF), CONTACT IS ELONGATE
VERTICALLY, PCE 6 MAY BE UPPERMOST PART OF UNIT
BELOW;
Replacement: CHLORITE
PCE 6 CONSISTS OF BASALT BRECCIA CEMENTED MOSTLY
WITH CHLORITE BUT ALSO WHITE MINERALS + POSSIBLY
MINOR EPIDOTE;
EPIDOTE
POSSIBLY IN CEMENT OF PCE 6;
OTHER
WHITE MINERALS IN CEMENT OF PCE 6;
Leg : 83 Top/Bottom Interval(mm): 450/1420 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1144.92
Core: 107 Top of Core Depth (m) : 1143.50
Sect: 1 Top of Section Depth(m): 1143.95
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 7 (46-56), 8 (58-62), 9 (64-68), 10A (71-77),
10B (75-78), 11 (80-86), 12 (88-94), 13 (96-104),
14 (106-114), 15 (115-120), 16 (122-130),
17 (132-142);
Texture : APHYRIC, MEDIUM GRAINED, GRADUAL INCREASE IN GRAIN
SIZE DOWN SECTION;
Structure : VERY FEW CRACKS, PCE 12 HAS 1 MM WIDE CHLORITE VEIN
WITH 5 MM LIGHT GREENISH GREY ALTERATION HALO;
Alteration : MOD
PCE 12 HAS CHLORITE VEIN WITH LIGHT GREENISH GREY
ALTERATION HALO;
Comments : OUTER SURFACES OF CORES STAINED YELLOW POSSIBLY
IRON HYDROXIDE FROM DRILL PIPE;
Replacement: CHLORITE
PCE 12 HAS CHLORITE VEIN (1 MM WIDE);
Leg : 83 Top/Bottom Interval(mm): 0/ 860 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1145.86
Core: 107 Top of Core Depth (m) : 1143.50
Sect: 2 Top of Section Depth(m): 1145.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-14), 2 (16-25), 3 (27-43), 4 (44-54),
5 (56-61), 6 (63-71), 7 (73-79), 8 (81-85);
Texture : APHYRIC, MEDIUM GRAINED, SLIGHTLY COARSER GRAINED
THAN CORE 107 SECTION 1;
Structure : PART OF SOME MASSIVE UNIT, VERY FEW CRACKS, NO
VEINS;
Alteration : MOD;
Comments : ALL PIECES STAINED YELLOW ON OUTER DRILLED SURFACE;
Vesicles :
Location: Filling: CHLORITE
PCES 1 + 2 + 4 CONTAIN MM TO CM SIZED IRREGULARLY
SHAPED VUGS FILLED WITH CHLORITE;
Replacement: CHLORITE
IRREGULARLY SHAPED VUGS FILLED WITH CHLORITE;
Leg : 83 Top/Bottom Interval(mm): 0/ 990 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1153.49
Core: 108 Top of Core Depth (m) : 1152.50
Sect: 1 Top of Section Depth(m): 1152.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (3-6), 2 (7-15), 3 (17-24), 4 (26-34),
5 (36-43), 6 (45-53), 7 (56-66), 8 (68-73),
9 (75-81), 10 (83-88), 11 (92-99);
Texture : APHYRIC, FINE GRAINED, UNIFORM IN GRAIN SIZE AND
APPEARANCE;
Structure : MASSIVE, CUT BY MINOR VEINLETS (< 1 MM) FILLED WITH
QTZ AND OR CHLORITE;
Alteration : MOD;
Comments : DARK GREY, CONTINUING FROM CORE 107, ALL PIECES
COVERED BY YELLOWISH STAIN;
Replacement: QUARTZ
IN VEINLETS;
CHLORITE
IN VEINLETS;
SULFIDE
RARE SULFIDE DISSEMINATION;
Leg : 83 Top/Bottom Interval(mm): 0/ 950 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1154.45
Core: 109 Top of Core Depth (m) : 1153.50
Sect: 1 Top of Section Depth(m): 1153.50
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-6), 2 (8-14), 3 (16-24), 4 (26-31),
5 (34-38), 6 (42-44), 7 (46-55), 8 (58-67),
9 (70-74), 10 (76-81), 11 (84-87), 12 (90-94);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE TO MEDIUM GRAINED,
UNIFORM IN GRAIN SIZE AND APPEARANCE THROUGH ENTIRE
CORE;
Structure : MASSIVE, CUT BY SOME MINOR VEINLETS FILLED WITH QTZ
AND OR CHLORITE, ON PCE 4 A LARGER DARK GREEN VEIN
OF 2 MM;
Alteration : MOD;
Comments : DARK GREY, ALL PIECES SHOW YELLOWISH STAINING,
SEQUENCE SEEMS TO BE CONTINUING FROM CORE 108
SECTION 1;
Replacement: QUARTZ
IN VEINLETS;
CHLORITE
IN VEINLETS;
SULFIDE
RARE SULFIDE DISSEMINATION;
Leg : 83 Top/Bottom Interval(mm): 0/ 650 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1157.65
Core: 110 Top of Core Depth (m) : 1157.00
Sect: 1 Top of Section Depth(m): 1157.00
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-8), 2 (11-16), 3 (18-23), 4 (26-30),
5 (32-41), 6 (43-47), 7 (50-54), 8 (57-63);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE TO MEDIUM GRAINED,
GRAIN SIZE FAIRLY UNIFORM, PHENOCRYST CONTENT VARIES
FROM < 1 PERCENT TO ABOUT 2-3 PERCENT;
Structure : MASSIVE, ALTERATION ALONG THE FEW MINOR FRACTURES IS
MINIMAL, CRACKS ARE OBLIQUE (4) HORIZONTAL (1)
VERTICAL (0);
Alteration : MOD
OL REPLACED BUT ALTERATION ALONG THE FEW MINOR
FRACTURES IS MINIMAL (CHLORITE) TO NON-EXISTENT;
Comments : GREY, SECTION SEEMS TO BE CONTINUOUS WITH CORE 109
SECTION 1;
Phenocrysts: OLIVINE
OL REPLACED;
Replacement: CHLORITE
ALTERATION ALONG THE FEW MINOR FRACTURES IS
MINIMAL (CHLORITE) TO NON-EXISTENT;
PYRITE
OCCURS IN MINOR AMOUNTS DISSEMINATED THROUGHOUT
ROCK;
Leg : 83 Top/Bottom Interval(mm): 0/ 250 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1161.75
Core: 111 Top of Core Depth (m) : 1161.50
Sect: 1 Top of Section Depth(m): 1161.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (3-9), 2 (11-15), 3 (17-24);
Texture : APHYRIC, FINE GRAINED, PCE 3 SHOWS TWO CHILLED
MARGINS, THE HOST ROCK IS A MEDIUM GRAINED APHYRIC
BASALT AND SIMILAR TO PCES 4-10B;
Structure : POSSIBLE DIKE;
Alteration : MOD;
Comments : DARK GREY, INTRUSIVE BASALT IS VERY SIMILAR TO PCES
1 + 2, HOST ROCK IS GREENISH GREY;
Leg : 83 Top/Bottom Interval(mm): 250/1090 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1162.59
Core: 111 Top of Core Depth (m) : 1161.50
Sect: 1 Top of Section Depth(m): 1161.75
LITHOLOGY: OL-PLAG MOD PHYRIC TO OL-PLAG PHYRIC BASALT;
Piece No. : PCES 4 (27-32), 5A (34-41), 5B (43-49), 6 (51-56),
7 (58-64), 8A (66-71), 8B (72-78), 8C (78-82),
9 (84-89), 10A (90-99), 10B (101-107);
Texture : MOD PHYRIC TO PHYRIC, MEDIUM GRAINED, POSSIBLE
CHILLED MARGIN IN PCE 8A, CHILLED MARGIN IN PCE 10A
AND 10B;
Structure : VEINS ARE THIN (< .5 MM) FILLED WITH A LIGHT GREEN
MINERAL AND SPARSE, LIGHT GREY ZONE (5 MM IN
THICKNESS) AROUND THESE VEINS (SEE PCE 5B), STRANGE
LAYERING IN PCE 8 WITH OL PHENOS IN A PREFERENTIAL
AREA, RARE AND THIN VEINS (< 1 MM) FILLED WITH WHITE
MINERAL IN PCES 4 AND 7;
Alteration : MOD
LIGHT GREY ZONE AROUND VEINS;
Comments : GREENISH GREY, INTRUSIVE ROCK IS SIMILAR TO PCES 4-9
AND THE HOST ROCK IS RATHER SIMILAR TO PCES 11-17;
Phenocrysts: OLIVINE ( >5%)
Size(mm): 1-3
OL REPLACED BY A DARK GREEN OR LIGHT GREEN
MINERAL, STRANGE LAYERING IN PCE 8 WITH OL PHENOS
LOCATED IN PREFERENTIAL AREA;
PLAGIOCLASE ( 4%)
Size(mm): <5 TO 2
PLAG REPLACED BY A LIGHT GREEN SLIGHTLY
TRANSPARENT MINERAL;
Replacement: OTHER
Minerals Replaced: OL
OL REPLACED BY DARK GREEN AND OR LIGHT GREEN
MINERAL;
OTHER
Minerals Replaced: PLAG
PLAG REPLACED BY A LIGHT GREEN SLIGHTLY
TRANSPARENT MINERAL;
Leg : 83 Top/Bottom Interval(mm): 1090/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1163.00
Core: 111 Top of Core Depth (m) : 1161.50
Sect: 1 Top of Section Depth(m): 1162.59
LITHOLOGY: OL-PLAG SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 11 (109-113), 12 (115-119), 13 (120-123),
14 (125-129), 15 (130-136), 16 (137-141),
17 (143-148);
Texture : MEDIUM GRAINED, SPARSELY TO MOD PHYRIC, PCE 16 IS
FINER GRAINED APHYRIC AND PERHAPS BELONGS TO ANOTHER
UNIT, FINER GRAINED AREA IN PCE 15 POSSIBLE CONTACT;
Structure : RARE AND THIN VEINS (< 1 MM) FILLED WITH WHITE
MINERAL IN PCES 12 + 13 + 16 + 4 + 7, IN PCE 16
WHITE FIBRO-RADIATED MINERAL IN AN EXPOSED CRACK
WITH DARK GREEN MINERAL IN PCES 10 + 12 + 15 + 16;
Alteration : MOD;
Comments : GREY, YELLOWISH COLORATION ON THE OUTER SURFACES OF
ALL THE PIECES, QUESTIONABLE CONTACT ON PCE 15;
Phenocrysts: OLIVINE
Size(mm): TO 2
OL REPLACED BY A DARK GREEN MINERAL;
Replacement: OTHER
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL;
OTHER
WHITE MINERAL, RARE AND THIN VEINS FILLED WITH
WHITE MINERAL;
Leg : 83 Top/Bottom Interval(mm): 0/ 490 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1166.49
Core: 112 Top of Core Depth (m) : 1166.00
Sect: 1 Top of Section Depth(m): 1166.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (3-7), 2 (10-14), 3 (16-22), 4 (25-32),
5 (34-40), 6 (43-48);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, FINEST IN PCE 1
AND BECOMING PROGRESSIVELY COARSER THROUGH PCE 6;
Alteration : MOD;
Comments : SMALLER DIAMETER CORE, DIFFERENT SIZE DRILL BIT
USED STARTING THIS CORE, ALSO SMALLER CORE DIAMETER
MAY HAVE CAUSED SOME ORIENTED PIECES TO HAVE ROLLED;
Leg : 83 Top/Bottom Interval(mm): 490/ 890 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1166.89
Core: 112 Top of Core Depth (m) : 1166.00
Sect: 1 Top of Section Depth(m): 1166.49
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 7 (52-56), 8 (59-66), 9 (69-74), 10 (76-83),
11 (85-89);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED, UNIFORM TEXTURE
THROUGHOUT;
Structure : VERY FINE VEIN (< 1 MM) OF WHITE MATERIAL IN PCE 6;
Alteration : MOD;
Comments : PCE 11 HAS LIGHTER GREENISH COLORATION ALONG ONE
EDGE;
Replacement: OTHER
WHITE MATERIAL, VEIN OF WHITE MATERIAL ON PCE 6;
PYRITE
RARE DISSEMINATED PYRITE;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1172.50
Core: 113 Top of Core Depth (m) : 1171.00
Sect: 1 Top of Section Depth(m): 1171.00
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (3-11), 2 (13-21), 3 (23-31), 4 (33-51),
5 (53-63), 6 (65-71), 7 (73-76), 8 (78-82),
9 (84-90), 10 (92-101), 11 (103-106), 12 (108-115),
13 (117-126), 14 (128-135), 15 (137-143),
16 (144-150);
Texture : MEDIUM GRAINED, GETTING PROGRESSIVELY FINER TO THE
BOTTOM OF THE SECTION;
Structure : MASSIVE, CUT BY SMALL 1 MM VEINLETS, VEINLETS FILLED
WITH CHLORITE AND OR WHITE MATERIAL;
Alteration : MOD
OL ALTERED (DARK RIM-GREENISH CORE), MORE
INTENSIVE ALTERATION ON PCES 1-7 WITH SPOTTY WHITE
MINERAL + GREEN MINERAL;
Comments : DARK GREY, ALL PIECES ARE INTENSIVELY STAINED BY
YELLOW ORANGE COLOR, PCE 4 SLIGHTLY CURVED DUE TO
DRILLING;
Phenocrysts: OLIVINE
Size(mm): 2
OL ALTERED;
PLAGIOCLASE
Size(mm): 3
Replacement: SULFIDE
SULFIDE DISSEMINATION THROUGHOUT CORE;
CHLORITE
VEINLETS FILLED WITH CHLORITE AND OR WHITE
MATERIAL;
Leg : 83 Top/Bottom Interval(mm): 0/ 120 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1176.12
Core: 114 Top of Core Depth (m) : 1176.00
Sect: 1 Top of Section Depth(m): 1176.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-5), 2 (7-11);
Texture : FINE GRAINED, APHYRIC;
Leg : 83 Top/Bottom Interval(mm): 120/ 320 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1176.32
Core: 114 Top of Core Depth (m) : 1176.00
Sect: 1 Top of Section Depth(m): 1176.12
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 3 (13-16), 4 (18-21), 5 (23-26), 6 (28-31);
Texture : SPARSELY PHYRIC, FINE GRAINED, CHILLED MARGIN
AGAINST FINE GRAINED BRECCIA CEMENTED WITH COLORLESS
MINERAL (QTZ) ON PCE 5;
Structure : COMMON CHLORITE VEINS, WHITE MINERAL VEINS IN PCES
3 + 4 + 6;
Alteration : MOD;
Replacement: CHLORITE
COMMON CHLORITE VEINS;
QUARTZ
ON PCE 5 FINE GRAINED BRECCIA CEMENTED WITH
COLORLESS MINERAL (QTZ);
OTHER
WHITE MINERAL VEINS IN PCES 3 + 4 + 6;
Leg : 83 Top/Bottom Interval(mm): 0/ 370 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1180.87
Core: 115 Top of Core Depth (m) : 1180.50
Sect: 1 Top of Section Depth(m): 1180.50
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (3-9), 2 (12-16), 3 (18-22), 4 (24-29),
5 (31-36);
Texture : SPARSELY PHYRIC, ALL PIECES ARE FINE TO MEDIUM
GRAINED, PCE 2 APPEARS SLIGHTLY FINER BUT THIS IS
PROBABLY DUE TO ALTERATION;
Structure : ON PCE 2 TWO PARALLEL VEINS (1 MM) WITH BOTH FILLED
BY DARK GREEN MATERIAL WITH TRACES OF PALER GREEN
AND WHITE MINERAL IN THE LARGER VEIN;
Alteration : MOD
OL ALTERED TO A HOMOGENEOUS DARK GREEN MINERAL,
PLAG APPEARS SLIGHTLY ALTERED (PALE GREENISH) ON
CUT SURFACES ONLY, PCE 2 SLIGHTLY FINER GRAINED
PROBABLY DUE TO ALTERATION;
Phenocrysts: OLIVINE ( 1%)
Size(mm): 2
OL ALTERED TO A HOMOGENEOUS DARK GREEN MINERAL;
PLAGIOCLASE ( < 1%)
Size(mm): 2
PLAG APPEARS SLIGHTLY ALTERED (PALE GREENISH) ON
CUT SURFACES ONLY PARTICULARLY ON PCE 2 WHERE A
VEIN DISSECTS THE PIECE;
Replacement: OTHER
Minerals Replaced: OL
OL ALTERED TO DARK GREEN MINERAL, VEINS WITH DARK
GREEN MINERAL WITH TRACES OF PALER GREEN + WHITE
MINERAL (SEE PCE 2);
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1186.50
Core: 116 Top of Core Depth (m) : 1185.00
Sect: 1 Top of Section Depth(m): 1185.00
LITHOLOGY: APHYRIC TO OL-PLAG-CPX SPARSELY PHYRIC BASALT;
LITHOLOGICALLY CORE 116 SECTION 1 IS A CONTINUATION
OF CORE 115 SECTION 1;
Piece No. : PCES 1 (2-9), 2 (10-14), 3 (16-21), 4 (23-29),
5 (31-37), 6 (38-41), 7 (43-48), 8 (50-55),
9 (57-61), 10 (63-67), 11 (71-76), 12 (77-81),
13 (83-89), 14 (91-99), 15 (101-104), 16 (106-111),
17 (114-118), 18 (121-124), 19 (126-131),
20 (133-135), 21 (137-141), 22 (143-148);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE TO MEDIUM GRAINED,
PCE 19 HAS A CHILLED MARGIN AND IS BRECCIATED
HOWEVER IT IS IMPOSSIBLE TO TELL ORIENTATION OF
CHILLING IN THE COLUMN SINCE ALL PARTS ARE ROLLERS;
Structure : VEINS ARE 2-3 MM WIDE AND FILLED WITH GREEN MATERIAL
(CHLORITE) AND SOME WHITE MINERALS (SEE PCES 14 + 16
+ 21), WIDER VEINS HAVE DARK GREEN BORDERS AND
LIGHTER GREEN CENTERS WITH OR WITHOUT WHITE
MINERALS, IN PCE 19 ORIENTATION OF CHILLING IS
IMPOSSIBLE TO TELL SINCE ALL PARTS ARE ROLLERS,
VEINS ARE OBLIQUE (18) HORIZONTAL (8) VERTICAL (10);
Alteration : MOD;
Comments : GREY;
Phenocrysts: OLIVINE ( 1%)
Size(mm): 2-4
OL PHENOS REPLACED BY POSSIBLY CHLORITE;
PLAGIOCLASE ( 2%)
Size(mm): 2-4
CLINOPYROXENE
CPX PHENOS RARE;
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED POSSIBLY BY CHLORITE, CHLORITE IN
VEINS;
SULFIDES
MINOR DISSEMINATED SULFIDES OF < 1 MM IN SIZE;
OTHER
SOME WHITE MINERALS IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/ 520 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1187.02
Core: 116 Top of Core Depth (m) : 1185.00
Sect: 2 Top of Section Depth(m): 1186.50
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (3-10), 2 (12-19), 3 (21-25), 4 (27-30),
5 (32-36), 6 (38-42), 7 (44-51);
Texture : SPARSELY PHYRIC, POSSIBLE CHILLED MARGINS IN PCES
1 + 2;
Structure : PCES 1 + 2 ARE FRACTURED AND VEINED, VEINS ARE UP TO
1 CM WIDE WITH BORDERS OF DARK GREEN ALTERATION
MINERAL (CHLORITE) WITH PALER GREEN CENTERS, VEINS
ARE OBLIQUE (9) HORIZONTAL (1);
Alteration : MOD
ALTERATION MOST EXTENSIVE IN PCES 1 + 2 WHERE
PIECES ARE FRACTURED AND VEINED, VEIN BORDERS ARE
DARK GREEN ALTERATION MINERAL (CHLORITE) WHERE
CENTERS ARE PALER GREEN;
Phenocrysts: OLIVINE ( TO 1%)
Size(mm): 3
OL REPLACED BY CHLORITE;
PLAGIOCLASE ( 2%)
Size(mm): 3-4
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY CHLORITE, ALSO CHLORITE IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1191.00
Core: 117 Top of Core Depth (m) : 1189.50
Sect: 1 Top of Section Depth(m): 1189.50
LITHOLOGY: OL-PLAG SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-7), 2 (9-14), 3 (16-21), 4 (23-28),
5 (30-35), 6 (37-43), 7 (44-49), 8 (51-54),
9 (57-60), 10 (62-65), 11A (67-74), 11B (75-82),
12 (84-89), 13 (92-99), 14 (100-106), 15 (108-114),
16A (116-118), 16B (119-125), 16C (125-131),
16D (132-136), 16E (137-141), 17 (143-148);
Texture : SPARSELY TO MOD PHYRIC, PCES 1-10 ARE FINE GRAINED
AND ARE SIMILAR TO LOWER PART OF CORE 116 SECTION 2,
PCES 11-17 ARE MEDIUM GRAINED AND THE GRAIN SIZE
INCREASES WITH DEPTH UP TO COARSE GRAINED FOR PCES
14-17;
Structure : FRACTURES ARE SPARSE AND FILLED WITH LIGHT GREEN
TO LIGHT GREY MATERIAL AND ARE < .5 MM IN THICKNESS;
Alteration : MOD;
Comments : YELLOWISH COLORATION ON ALL PIECES, CORE 117
SECTION 1 IS A SINGLE COOLING UNIT AND INCLUDES
LOWER PART OF CORE 116 SECTION 2;
Phenocrysts: OLIVINE
Size(mm): 1-1.5
OL REPLACED BY DARK GREEN CLAY;
PLAGIOCLASE
Size(mm): 1-2
Replacement: CLAY
Minerals Replaced: OL
OL REPLACED BY DARK GREEN CLAY;
Leg : 83 Top/Bottom Interval(mm): 0/ 720 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1194.72
Core: 118 Top of Core Depth (m) : 1194.00
Sect: 1 Top of Section Depth(m): 1194.00
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-11), 2A (13-21), 2B (22-27), 2C (28-34),
2D (35-44), 3 (46-52), 4 (55-61), 5 (63-69);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED, VERY UNIFORM
THROUGHOUT, CORE 118 SECTION 1 IS SLIGHTLY FINER
GRAINED THAN CORE 117 SECTION 1;
Structure : VERY FEW CRACKS;
Alteration : MOD;
Comments : SAME UNIT AS CORE 117 SECTION 1;
Phenocrysts: OLIVINE
OL REPLACED BY CHLORITE + SULFIDES;
Replacement: CHLORITE
Minerals Replaced: OL
SULFIDES
Minerals Replaced: OL
OL REPLACED BY CHLORITE + SULFIDES, MINOR
DISSEMINATED SULFIDES;
Leg : 83 Top/Bottom Interval(mm): 0/ 100 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1198.60
Core: 119 Top of Core Depth (m) : 1198.50
Sect: 1 Top of Section Depth(m): 1198.50
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (3-9);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED;
Structure : NO VEINS;
Alteration : FRESH
PLAG PHENOS PROBABLY ALTERED;
Comments : THE OUTER SURFACE IS YELLOWISH GREEN;
Phenocrysts: OLIVINE ( < 1%)
Size(mm): 1.5
OL REPLACED BY DARK GREEN MINERAL + PYRITE;
PLAGIOCLASE ( 1%)
Size(mm): 2
PLAG PROBABLY ALTERED;
Replacement: PYRITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL + PYRITE;
OTHER
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL + PYRITE;
Leg : 83 Top/Bottom Interval(mm): 0/ 760 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1204.26
Core: 120 Top of Core Depth (m) : 1203.50
Sect: 1 Top of Section Depth(m): 1203.50
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-6), 2 (8-13), 3 (15-19), 4 (21-27),
5 (29-34), 6 (36-42), 7 (44-49), 8 (51-55),
9 (57-61), 10 (64-69), 11 (71-74);
Texture : SPARSELY PHYRIC, VERY FINE GRAINED, PCE 7 SHOWS
BRECCIATED CHILLED CONTACT OF VERY FINE GRAINED
BASALT AGAINST ALTERED COARSE GRAINED BASALT,
CHILLED BASALT ON PCE 10;
Structure : ON PCES 1-6 SOME VEINLETS FILLED WITH DARK GREEN
MINERAL AND RARE WHITE MATERIAL;
Alteration : MOD
INTERVAL (0-46) CM;
EXT
INTERVAL (46-76) CM;
PCE 7 HAS FINE GRAINED BASALT AGAINST ALTERED
COARSE GRAINED BASALT, ALTERED BASALT ON PCES 8-11
WITH ALTERATION PRODUCTS AMBIGUOUS;
Comments : DARK GREY, YELLOWISH COLOR ON ALL PIECES;
Phenocrysts: OLIVINE
OL REPLACED BY DARK GREEN MINERAL (CHLORITE)
+ SOMETIMES REDDISH MINERAL;
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL (CHLORITE), SOME
VEINLETS FILLED WITH DARK GREEN MINERAL (CHLOR);
SULFIDE
MINOR SULFIDE DISSEMINATION;
Leg : 83 Top/Bottom Interval(mm): 0/ 650 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1208.15
Core: 121 Top of Core Depth (m) : 1207.50
Sect: 1 Top of Section Depth(m): 1207.50
LITHOLOGY: APHYRIC BASALT;
OL PHYRIC BASALT;
Piece No. : PCES 1 (3-6), 2 (8-14), 3 (16-20), 4 (21-30),
5 (32-38), 6 (41-45), 7 (47-55), 8 (57-63);
Texture : APHYRIC, FINE GRAINED, PCE 1 IS VERY FINE GRAINED
OL PHYRIC BASALT;
Structure : NO VEINING;
Alteration : MOD
GROUNDMASS OL ALTERED TO DARK GREEN MINERAL,
SULFIDES ARE ASSOCIATED WITH THE DARK GREEN
MINERAL;
Comments : GREY, PCE 1 MAY BE RELATED TO CORE 120 SECTION 1;
Groundmass : OLIVINE
GROUNDMASS OL ALTERED TO DARK GREEN MINERAL;
Replacement: SULFIDE
SULFIDES ARE ASSOCIATED WITH THE DARK GREEN
MINERAL;
OTHER
DARK GREEN MINERAL, GROUNDMASS OL ALTERED TO DARK
GREEN MINERAL;
Leg : 83 Top/Bottom Interval(mm): 650/1060 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1208.56
Core: 121 Top of Core Depth (m) : 1207.50
Sect: 1 Top of Section Depth(m): 1208.15
LITHOLOGY: OL-PLAG PHYRIC BASALT;
Piece No. : PCES 9A (65-72), 9B (74-78), 9C (80-88), 10 (89-92),
11 (94-98), 12 (99-106);
Texture : PHYRIC, MEDIUM GRAINED, AT PCE 9A THE SAMPLES BECOME
COARSER GRAINED;
Structure : NO VEINS;
Alteration : MOD
THERE ARE LARGE PATCHES OF ALTERATION (NOT VEINS)
UP TO 2 MM IN DIAMETER CONSISTING OF LARGE
IRREGULAR SHAPED GREEN MINERALS + THE SURROUNDING
AREA IS BLEACHED TO A LIGHTER GREEN COLOR DUE TO
A SECONDARY WHITE MINERAL OCCURRING IN THOSE
AREAS;
Comments : GREY;
Replacement: OTHER
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL;
SULFIDE
SULFIDE ASSOCIATED WITH DARK GREEN MINERAL;
Leg : 83 Top/Bottom Interval(mm): 0/ 970 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1214.47
Core: 122 Top of Core Depth (m) : 1213.50
Sect: 1 Top of Section Depth(m): 1213.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (3-16), 2 (18-26), 3 (28-49), 4 (52-61),
5 (63-71), 6 (74-85), 7 (88-95);
Texture : APHYRIC, FINE GRAINED, VEINS FORM CEMENT OF BRECCIA;
Structure : ALL THE PIECES CONTAIN (< O.5 TO 1.5 MM) VEINS OF
DARK GREEN MINERAL, IN PCES 3-7 VEINS ARE NUMEROUS
AND FORM CEMENT OF BRECCIA, PCES 3-7 ARE BRECCIATED
BASALT, WHITE BRIGHT PLATY MINERAL ON THE EXPOSED
CRACKS OF PCES 1 + 2 + 3, PCE 6 CONTAINS A VERY DARK
GREEN MINERAL ASSOCIATED WITH A WHITE MINERAL + A
TRANSPARENT MINERAL + WHITE SMALL GLOBULAR CLUSTERS
(.5 MM) + PYRITE, PCE 7 CONTAINS A 4 MM VEIN WITH
DARK GREEN MINERAL + WHITE PLATY MINERAL (ANHYDRITE)
+ PYRITE, PCE 7 HAS VERY THIN (< .5 MM) VEINS OF
DARK GREEN MINERAL AND THIN VEINS (.5 TO 1 MM) OF
WHITE MINERAL;
Alteration : MOD;
Comments : LIGHT GREENISH GREY;
Replacement: ANHYDRITE
PYRITE
IN VEINS;
OTHER
(EN MI%)
Size(mm): NERAL + WH
Minerals Replaced: ITE MINERAL IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 970/1370 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1214.87
Core: 122 Top of Core Depth (m) : 1213.50
Sect: 1 Top of Section Depth(m): 1214.47
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 8 (98-109), 9 (112-121), 10 (124-128),
11 (131-137);
Texture : MOD PHYRIC, FINE GRAINED;
Structure : CRACKS APPARENTLY EMPTY EXCEPT ONE IN PCE 9 IS
FILLED WITH LIGHT GREEN MINERAL, WHITE PLATY
MINERAL (ANHYDRITE) ON EXPOSED CRACK IN PCES 8 + 9,
WHITE BLOCKY MINERAL (ANHYDRITE) ON EXPOSED CRACK
IN PCE 11;
Alteration : MOD;
Phenocrysts: OLIVINE ( 5%)
Size(mm): 1-2.5
OL REPLACED BY DARK GREEN MINERAL;
PLAGIOCLASE ( 2%)
Size(mm): 1-3
PLAG REPLACED BY UNIDENTIFIED MINERAL;
Replacement: ANHYDRITE
IN CRACKS;
OTHER
ON PCE 9 CRACK FILLED WITH LIGHT GREEN MINERAL,
OL REPLACED BY DARK GREEN MINERAL;
UNIDENTIFIED
PLAG REPLACED BY UNIDENTIFIED MINERAL;
Leg : 83 Top/Bottom Interval(mm): 0/ 250 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1215.25
Core: 122 Top of Core Depth (m) : 1213.50
Sect: 2 Top of Section Depth(m): 1215.00
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1 (2-24);
Texture : MOD PHYRIC, GROUNDMASS VERY FINE GRAINED;
Structure : VEIN MATERIAL CONSISTS OF WHITE PLATY MINERAL
POSSIBLY ANHYDRITE + GREENISH MINERAL + YELLOWISH
MINERAL;
Alteration : MOD;
Comments : DARK GREY;
Phenocrysts: OLIVINE
Size(mm): < 1
OL REPLACED BY DARK GREEN MINERAL POSSIBLY CHLOR;
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL POSSIBLY CHLOR;
ANHYDRITE
IN THE PARTS OF PCE 1;
Leg : 83 Top/Bottom Interval(mm): 250/ 350 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1215.35
Core: 122 Top of Core Depth (m) : 1213.50
Sect: 2 Top of Section Depth(m): 1215.25
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 2 (27-34);
Texture : APHYRIC, MEDIUM GRAINED;
Alteration : MOD;
Comments : PIECES SHOW YELLOWISH STAINING;
Leg : 83 Top/Bottom Interval(mm): 350/ 460 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1215.46
Core: 122 Top of Core Depth (m) : 1213.50
Sect: 2 Top of Section Depth(m): 1215.35
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 3 (36-45);
Texture : APHYRIC TO SPARSELY PHYRIC, MEDIUM GRAINED;
Alteration : MOD
OL ALTERED WITH DARK GREEN MINERAL RIM AND
SOMEWHAT LIGHTER GREEN MINERAL CORE;
Comments : PIECES SHOW YELLOWISH STAINING;
Phenocrysts: OLIVINE
Size(mm): < 2
OL COMPLETELY ALTERED;
Replacement: OTHER
DARK GREEN MINERAL, LIGHTER GREEN MINERAL, OL
ALTERED WITH DARK GREEN MINERAL RIM AND SOMEWHAT
LIGHTER GREEN MINERAL CORE;
Leg : 83 Top/Bottom Interval(mm): 0/1330 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1223.83
Core: 123 Top of Core Depth (m) : 1222.50
Sect: 1 Top of Section Depth(m): 1222.50
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (3-7), 2 (9-15), 3 (17-23), 4 (25-31),
5A (33-44), 5B (45-50), 5C (50-57), 6 (60-69),
7 (71-83), 8 (84-94), 9 (96-101), 10 (102-109),
11 (112-120), 12 (123-131);
Texture : SPARSELY PHYRIC, ROCK HAS A FINE GRAINED GROUNDMASS;
Structure : SOME CHLORITE FILLED VEINS, SMALL VEINLETS WITH
WHITE MINERAL POSSIBLY ANHYDRITE CUTTING CHLORITE
VEINS;
Alteration : MOD;
Comments : ROCK IS DARK GREY;
Phenocrysts: OLIVINE
Size(mm): < 1.5
OL REPLACED BY DARK GREEN (CHLORITE) + POSSIBLY
REDDISH BROWN MATERIAL;
PLAGIOCLASE
Size(mm): < 2
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN (CHLORITE) + POSSIBLY
REDDISH BROWN MATERIAL;
SULFIDE
MINOR SULFIDE DISSEMINATION;
ANHYDRITE
VEINLETS WITH WHITE MINERAL POSSIBLY ANHYDRITE
CUTTING CHLORITE VEINS;
CHLORITE
CHLORITE FILLED VEINS;
Leg : 83 Top/Bottom Interval(mm): 1330/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1224.00
Core: 123 Top of Core Depth (m) : 1222.50
Sect: 1 Top of Section Depth(m): 1223.83
LITHOLOGY: APHYRIC BASALT;
OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 13 (134-140), 14 (142-149);
Texture : PCE 13 IS APHYRIC AND FINE TO MEDIUM GRAINED, PCE 13
SHOWS FINGER-LIKE INTRUSION CONSISTING POSSIBLY OF
ALTERED GLASS, PCE 14 HAS CHILLED MARGIN OF MOD
PHYRIC BASALT AGAINST FINE TO MEDIUM GRAINED APHYRIC
BASALT;
Structure : PCE 13 SHOWS FINGERLIKE INTRUSION CONSISTING
POSSIBLY OF ALTERED GLASS;
Alteration : MOD
PCE 13 SHOWS FINGER-LIKE INTRUSION CONSISTING
POSSIBLY OF ALTERED GLASS, ON PCE 14 INTENSE
ALTERATION ALONG CONTACT POSSIBLY ALTERED
GLASS AS WELL;
Comments : ON PCE 14 INTENSE ALTERATION ALONG CONTACT;
Leg : 83 Top/Bottom Interval(mm): 0/ 750 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1224.75
Core: 123 Top of Core Depth (m) : 1222.50
Sect: 2 Top of Section Depth(m): 1224.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (3-11), 2 (13-22), 3 (24-29), 4 (31-38),
5 (40-47), 6 (49-56), 7 (59-65), 8 (67-72);
Texture : APHYRIC, MEDIUM GRAINED, PCE 1 CONTAINS CHILLED
MARGIN WITH LEFT CHILLED AGAINST RIGHT (ARCHIVE
HALF);
Structure : FRACTURE SURFACES COATED WITH CHLORITE + ANHYDRITE
IN PCES 1-7, 3 MM WIDE ANHYDRITE VEIN IN PCE 7,
SEVERAL FINE (1 MM) CHLORITE VEINS IN PCES 2 + 3,
ANHYDRITE FILLS CENTERS OF CHLORITE RIMMED VEINS OR
IS PRESENT ALONE, MINOR SULFIDES (PYRITE) IN VEINS
WITH CHLORITE AND POSSIBLY ANHYDRITE;
Alteration : MOD;
Comments : CORE 123 SECTION 2 IS A DIFFERENT UNIT THAN CORE 123
SECTION 1;
Replacement: CHLORITE
COATS FRACTURED SURFACE IN PCES 1-7, CHLOR VEINS
(1 MM) IN PCES 2 + 3;
ANHYDRITE
COATS FRACTURED SURFACE IN PCES 1-7, 3 MM WIDE
ANHYDRITE VEIN IN PCE 7, ANHYDRITE FILLS CENTER OF
CHLORITE RIMMED VEINS OR IS PRESENT ALONE;
SULFIDES
MINOR SULFIDES IN VEINS WITH CHLORITE AND ALSO
POSSIBLY WITH ANHYDRITE;
Leg : 83 Top/Bottom Interval(mm): 0/1370 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1232.87
Core: 124 Top of Core Depth (m) : 1231.50
Sect: 1 Top of Section Depth(m): 1231.50
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-6), 2 (8-11), 3 (13-36), 4 (38-42),
5 (44-49), 6 (51-56), 7 (58-67), 8 (69-79),
9 (80-87), 10 (90-95), 11 (96-105), 12 (107-119),
13 (120-126), 14 (129-136);
Texture : FINE TO MEDIUM GRAINED, SPARSELY PHYRIC, FINER
GRAINED AT TOP OF SECTION;
Structure : PCES 9 + 11 HAVE CHLORITE VEINS, PCE 14 HAS CHLORITE
FILLED VUGS, VERY FEW CRACKS (< 1 MM) FILLED WITH
CHLORITE;
Alteration : MOD
PCES 9 + 11 HAVE SLIGHT PALER GREEN DISCOLORATION
AROUND CHLORITE VEINS, PCE 14 HAS CHLORITE FILLED
VUGS WITH PALE GREEN ALTERATION HALOES (5 MM);
Comments : GENERALLY DARK GREENISH GREY, OUTER SURFACES OF
PIECES STAINED RED ORANGE;
Vesicles :
Location: Filling: CHLORITE
PCE 14 HAS CHLORITE FILLED VUGS;
Phenocrysts: OLIVINE
Size(mm): TO 3
LARGE OL PHENOS UP TO 3 MM, PCE 14 HAS MORE
PHENOS;
Replacement: CHLORITE
PCE 9 + 11 HAS CHLORITE VEINS, PCE 14 HAS CHLORITE
FILLED VUGS, FEW CRACKS FILLED WITH CHLORITE;
SULFIDES
SULFIDES ASSOCIATED WITH CHLORITE;
OTHER
NO ANHYDRITE OR WHITE MINERALS OR EPIDOTE;
Leg : 83 Top/Bottom Interval(mm): 0/ 860 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1241.36
Core: 125 Top of Core Depth (m) : 1240.50
Sect: 1 Top of Section Depth(m): 1240.50
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (0-9), 2 (11-15), 3 (17-21), 4 (23-29),
5 (31-39), 6 (42-49), 7 (52-57), 8 (59-64),
9 (66-71), 10 (73-83);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE GRAINED, HOWEVER
NOT ALL SAMPLES HAVE THE SAME GRAIN SIZE, THE
VARIATION IN GRAIN SIZE IS NOT SYSTEMATIC;
Structure : FRACTURES HAVE THIN VEINS WHICH ARE FILLED BY
QUESTIONABLE CHLORITE AND QUESTIONABLE ANHYDRITE AND
ASSOCIATED SULFIDES, IN THE VEINS THERE IS
FREQUENTLY A HALO OF LIGHTER COLORED BASALT,
CRACKS ARE OBLIQUE (9) HORIZONTAL (5) AND
VERTICAL (4);
Alteration : MOD
OL PHENOS ARE ALTERED TO DARK GREEN MINERAL WITH
A HALO OF LIGHTER GREEN ALTERATION AROUND THEM,
FRACTURES HAVE THIN VEINS WHICH ARE FILLED WITH
QUESTIONABLE CHLORITE AND QUESTIONABLE ANHYDRITE
WITH ASSOCIATED SULFIDES, ALTERATION IS ABOUT A
MAXIMUM OF .5 MM WIDE AND AROUND THE ABOVE MINERAL
ASSEMBLAGE IN THE VEINS THERE IS FREQUENTLY A HALO
OF LIGHTER COLORED BASALT;
Comments : SINCE SEVERAL OF THE PIECES COULD BE OUT OF PLACE
DUE TO THEIR SIZE AND SHAPE IT IS DIFFICULT TO
DETERMINE LITHOLOGIC BOUNDARIES;
Phenocrysts: OLIVINE
Size(mm): 2
SPARSE OL PHENOS ARE ALTERED TO DARK GREEN
MINERAL;
Replacement: SULFIDES
IN VEINS;
ANHYDRITE
IDENTIFICATION UNCERTAIN;
CHLORITE
IDENTIFICATION UNCERTAIN;
Leg : 83 Top/Bottom Interval(mm): 0/ 600 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1250.10
Core: 126 Top of Core Depth (m) : 1249.50
Sect: 1 Top of Section Depth(m): 1249.50
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (1-8), 2 (9-14), 3 (16-19), 4A (21-29),
4B (31-38), 5 (39-48), 6 (50-60);
Texture : MODERATELY PHYRIC, ALL PIECES EXCEPT PCES 1 + 3
ARE SIMILAR AND ARE FINE TO MEDIUM GRAINED BASALT,
PCES 1 + 3 APPEAR COARSER GRAINED, NO CHILLING
EVIDENT;
Structure : SMALL AMOUNT OF VEINING IS FILLED WITH DARK GREEN
MINERALS AND WHITE CRYSTALLINE QUESTIONABLE
ANHYDRITE, CRACKS ARE VERTICAL (2) HORIZONTAL (4)
AND OBLIQUE (3);
Alteration : MOD
OL ALTERED TO DARK GREEN CHLORITE, PCES 1 AND 3
APPEAR COARSER GRAINED WITH PALER POSSIBLY ALTERED
AREAS OF GROUNDMASS SIMILAR TO CORE 121;
Phenocrysts: OLIVINE ( 2%)
Size(mm): 2-3
OL ALTERED TO DARK GREEN CHLORITE;
PLAGIOCLASE ( 2%)
Size(mm): 2
CLINOPYROXENE ( 1-2%)
Size(mm): 2-5
Replacement: CHLORITE
Minerals Replaced: OL
OL ALTERED TO DARK GREEN CHLORITE;
ANHYDRITE
SMALL AMOUNT OF VEINING IS FILLED WITH DARK GREEN
MINERALS AND WHITE CRYSTALLINE POSSIBLY ANHYDRITE,
IDENTIFICATION UNCERTAIN;
PYRITE
PYRITE ASSOCIATED ONLY WITH OL PSEUDOMORPH;
CHLORITE
IDENTIFICATION UNCERTAIN, OL ALTERED TO DARK GREEN
CHLORITE;
OTHER
DARK GREEN MINERALS, SMALL AMOUNT OF VEINING IS
FILLED WITH DARK GREEN MINERALS AND POSSIBLY
ANHYDRITE;
Leg : 83 Top/Bottom Interval(mm): 0/1230 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1254.73
Core: 127 Top of Core Depth (m) : 1253.50
Sect: 1 Top of Section Depth(m): 1253.50
LITHOLOGY: OL-CPX-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-4), 2 (8-15), 3 (17-25), 4 (27-32),
5 (35-45), 6 (47-52), 7 (55-60), 8 (62-66),
9 (69-73), 10 (76-81), 11 (84-94), 12 (95-105),
13 (108-114), 14 (116-121);
Texture : MOD PHYRIC, MEDIUM TO COARSE GRAINED;
Structure : VEINS ARE RARE AND THIN (< .5 MM), PCE 13 HAS VEIN
FILLED WITH A MEDIUM GREEN MINERAL, PCE 2 HAS VEIN
FILLED WITH A DARK GREEN MINERAL;
Alteration : MOD;
Comments : GREY, ORANGE COLORATION ON OUTER SURFACE OF
PCES 8-14;
Phenocrysts: OLIVINE ( 4%)
Size(mm): .5-4
OL REPLACED BY DARK GREEN MINERAL;
CLINOPYROXENE ( < 1%)
A BIG CRYSTAL IN PCE 11 WHICH IS 6 MM LONG;
PLAGIOCLASE ( 3%)
Size(mm): .5-2
Replacement: SULFIDES
MINOR SULFIDES DISSEMINATED THROUGHOUT THE ROCK;
OTHER
Minerals Replaced: OL
DARK GREEN MINERAL, ON PCE 2 VEIN FILLED WITH
DARK GREEN MINERAL, OL REPLACED BY DARK GREEN
MINERAL;
OTHER
MEDIUM GREEN MINERAL, PCE 13 HAS VEIN FILLED WITH
A MEDIUM GREEN MINERAL (APPARENTLY DIFFERENT FROM
CHLORITE AND CLAY AS SEEN EARLIER);
Leg : 83 Top/Bottom Interval(mm): 0/ 760 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1261.76
Core: 128 Top of Core Depth (m) : 1261.00
Sect: 1 Top of Section Depth(m): 1261.00
LITHOLOGY: OL-PLAG-CPX MOD TO SPARSELY PHYRIC BASALT;
Piece No. : PCES 1A (3-9), 1B (8-22), 2 (25-31), 3 (33-37),
4 (40-49), 5 (51-61), 6A (64-75), 6B (64-67);
Texture : MOD TO SPARSELY PHYRIC, MED TO FINE GRAINED;
Structure : FEW VEINLETS;
Alteration : MOD
OL ALTERED;
Comments : GREY;
Phenocrysts: OLIVINE
Size(mm): TO 2
OL ALTERED, MORE ABUNDANT ON PCES 1A AND 1B;
CLINOPYROXENE
PRISMS UP TO 1 CM, SHOWS A CERTAIN ALIGNMENT
ESPECIALLY ON PCE 4;
PLAGIOCLASE
Size(mm): TO 3
Leg : 83 Top/Bottom Interval(mm): 760/ 950 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1261.95
Core: 128 Top of Core Depth (m) : 1261.00
Sect: 1 Top of Section Depth(m): 1261.76
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 7 (76-80), 8 (82-86), 9 (88-94);
Texture : FINE GRAINED, APHYRIC TO SPARSELY PHYRIC;
Alteration : MOD;
Comments : GREY;
Leg : 83 Top/Bottom Interval(mm): 950/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1262.50
Core: 128 Top of Core Depth (m) : 1261.00
Sect: 1 Top of Section Depth(m): 1261.95
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 10 (96-101), 11 (103-109), 12 (110-119),
13 (122-131), 14 (133-150);
Texture : SPARSELY PHYRIC, GROUNDMASS FINE TO MEDIUM GRAINED,
BECOMES PROGRESSIVELY COARSER TOWARDS BOTTOM OF
SECTION;
Structure : VERTICAL TO SUBVERTICAL FRACTURES (TWO PERPENDICULAR
SYSTEMS) ON SOME PIECES (A NEW TYPE OF FRACTURING);
Alteration : MOD
OL ALTERED (DARK GREEN + REDDISH BROWN ALTERATION
PRODUCTS)
Comments : GREY;
Phenocrysts: OLIVINE
Size(mm): TO 2
OL ALTERED WITH DARK GREEN + REDDISH BROWN
ALTERATION PRODUCTS;
Replacement: ANHYDRITE
ON PCE 12;
Leg : 83 Top/Bottom Interval(mm): 0/ 120 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1262.62
Core: 128 Top of Core Depth (m) : 1261.00
Sect: 2 Top of Section Depth(m): 1262.50
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 1 (2-11);
Texture : MEDIUM TO COARSE GRAINED, SPARSELY PHYRIC;
Structure : POSSIBLE VEIN OR VUG;
Alteration : MOD
DARK GREY COLOR WITH LIGHTER GREY ON LEFT SIDE
INDICATING ALTERATION HALO AROUND POSSIBLE VUGS
OR VEIN, CLAY.MIN REPLACING OL ARE LIGHT GREEN IN
ALTERATION HALO AND DARK GREEN IN DARK GREY ROCK;
Comments : DARK GREY, SAME AS LOWERMOST CORE 128 SECTION 1;
Replacement: CLAY MINERALS
Minerals Replaced: OL
CLAY.MIN REPLACING OL ARE LIGHT GREEN IN
ALTERATION HALO AND DARK GREEN IN DARK GREY ROCK;
SULFIDES
MINOR DISSEMINATED SULFIDES;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1271.50
Core: 129 Top of Core Depth (m) : 1270.00
Sect: 1 Top of Section Depth(m): 1270.00
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;;
Piece No. : PCES 1 (2-11), 2 (12-16), 3A (18-30), 3B (31-39),
3C (40-46), 3D (47-56), 4 (57-66), 5 (68-75),
6A (76-91), 6B (92-99), 7 (102-105), 8 (107-111),
9 (113-119), 10 (123-126), 11 (128-132),
12 (134-139), 13 (141-150);
Texture : MOD PHYRIC, MEDIUM - COARSE GRAINED;
Structure : NO VEINING;
Alteration : MOD
OL ALTERED TO DARK GREEN TO BLACK MINERALS, THERE
APPEARS TO BE TWO PHASES - ONE DARK GREEN TO BLACK
WITH A ROUNDED SHAPE IN THE CENTER AND A LIGHTER
GREENISH MINERAL SURROUNDING IT WHICH MAINTAINS
THE EUHEDRAL SHAPE, PLAG APPEARS UNALTERED,
ALTERATION IS QUITE MINIMAL (NO VEINING);
Comments : GREY, CORE 129 SECTION 1 IS PROBABLY A CONTINUATION
OF CORE 128 SECTION 2;
Phenocrysts: OLIVINE ( 2-3%)
Size(mm): 3-4
OL ALTERED TO DARK GREEN TO BLACK MINERALS;
PLAGIOCLASE ( 3-4%)
Size(mm): TO 3-4
PLAG APPEARS UNALTERED, GROUNDMASS PLAG IS
COLORLESS TO PALE BROWN IN HAND SPECIMEN;
CLINOPYROXENE ( 2%)
Size(mm): TO 5-6
CPX FORMS IN UNUSUALLY LARGE ABUNDANCE AS COMPARED
TO PREVIOUS LITHOLOGIES;
Replacement: PYRITE
DISSEMINATED PYRITE THROUGHOUT THE ROCKS;
OTHER
DARK GREEN TO BLACK MINERALS, OL ALTERED TO DARK
GREEN TO BLACK MINERALS;
Leg : 83 Top/Bottom Interval(mm): 0/ 960 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1272.46
Core: 129 Top of Core Depth (m) : 1270.00
Sect: 2 Top of Section Depth(m): 1271.50
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1A (3-9), 1B (10-22), 1C (23-31), 1D (32-35),
1E (36-40), 1F (40-49), 2A (51-55), 2B (57-65),
3 (67-71), 4 (73-79), 5 (80-89), 6 (91-95);
Texture : MEDIUM - COARSE GRAINED, MOD PHYRIC, SOME EVIDENCE
OF FINING TOWARDS PCE 6;
Structure : VEINING IS VERY LIMITED (<< 1MM) FILLED BY DARK
GREEN CLAYS (POSSIBLY CHLORITE);
Alteration : MOD
SIMILAR ALTERATION SEEN IN CORE 129 SECTION 1;
Comments : CONTINUED FROM SECTION 1;
Replacement: CHLORITE
IDENTIFICATION UNCERTAIN;
Leg : 83 Top/Bottom Interval(mm): 960/1500 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1273.00
Core: 129 Top of Core Depth (m) : 1270.00
Sect: 2 Top of Section Depth(m): 1272.46
LITHOLOGY: APHYRIC TO OL-PLAG-CPX SPARSELY PHYRIC BASALT;;
Piece No. : PCES 7 (97-104), 8 (106-111), 9 (113-119),
10 (121-127), 11 (128-136), 12 (139-148);
Texture : APHYRIC TO SPARSELY PHYRIC, VERY FINE GRAINED
UNIFORMLY FINE GRAINED BASALT;
Structure : VEINING MORE COMMON THAN IN UPPER UNIT, VEINS
ESSENTIALLY FILLED WITH DARK MINERALS ENVELOPING
WHITE MINERAL (ZEOLITE), PYRITE COMMON IN VEINS,
PALER GREEN GREY COLOR ENVELOPS VEINS FOR 3 MM;
Alteration : MOD
ON PCE 10 ALTERATION OF MATRIX SEEN AS ODD
IRREGULAR SPOTS IN ROCK - GREEN IN COLOR WITH
PALE GREY HALOES, CHLORITIZATION OF WALL ROCK
MATRIX - SEEN IN HAND SPECIMEN;
Comments : DARK GREY-GREEN, PALER GREEN GREY COLOR ENVELOPS
VEINS FOR ABOUT 3 MM;
Phenocrysts: OLIVINE ( <1%)
Size(mm): 1
OL REPLACED BY DARK GREEN CLAY;
Replacement: CLAY
Minerals Replaced: OL
OL REPLACED BY DARK GREEN CLAY;
ZEOLITE
VEINS FILLED WITH DARK MINERALS ENVELOPING
WHITE MINERAL (ZEOLITE);
PYRITE
COMMON IN VEINS;
CHLORITE
CHLORITIZATION OF WALL ROCK MATRIX;
Leg : 83 Top/Bottom Interval(mm): 0/ 950 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1273.95
Core: 129 Top of Core Depth (m) : 1270.00
Sect: 3 Top of Section Depth(m): 1273.00
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (0-8), 2 (10-14), 3 (16-20), 4 (22-29),
5 (31-36), 6 (38-45), 7 (47-51), 8 (53-59),
9 (62-64), 10 (67-71), 11 (73-77), 12 (79-85),
13 (86-94);
Texture : APHYRIC TO VERY SPARSELY PHYRIC, VERY FINE GRAINED,
PCE 5 SHOWS TWO CHILLED MARGINS THAT QUENCH AT ALL
EDGES AGAINST THE HOST BASALT - PROBABLY AN
INTRUSIVE FINGER NOT RELATED TO MATERIAL ABOVE OR
BELOW THE MARGINS;
Structure : MINOR VEINING SIMILAR TO THAT PREVIOUSLY SEEN
(CHLORITE OR CHLORITE AT THE BORDERS WITH WHITE
MINERALS IN CENTER);
Alteration : MOD
ALTERATION PROCEEDS FROM OLIVINES INTO GROUNDMASS
AND GIVES ILLUSION OF LARGER PHENOS, ALTERATION IS
SURROUNDED BY A PALER GREEN ZONE;
Comments : GREY;
Phenocrysts: OLIVINE ( < 1%)
Size(mm): 1
OL REPLACED BY DARK GREEN MINERAL, ALTERATION
PROCEEDS FROM OLIVINES INTO GROUNDMASS AND GIVES
ILLUSION OF LARGER PHENOS;
Replacement: CHLORITE
MINOR VEINING OF CHLORITE;
PYRITE
SMALL, DISSEMINATED THROUGH ROCK;
OTHER
WHITE MINERALS, MINOR VEINING WITH CHLORITE AT
THE BORDERS WITH WHITE MINERALS IN THE CENTER;
OTHER
DARK GREEN MINERAL, OL REPLACED BY DARK GREEN
MINERAL;
Leg : 83 Top/Bottom Interval(mm): 950/1240 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1274.24
Core: 129 Top of Core Depth (m) : 1270.00
Sect: 3 Top of Section Depth(m): 1273.95
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 14 (96-109), 15 (111-123);
Texture : MOD PHYRIC, MEDIUM GRAINED;
Alteration : MOD
PLAG FRESH;
Comments : GREY;
Phenocrysts: OLIVINE ( 1%)
Size(mm): 1
OL TOTALLY REPLACED;
PLAGIOCLASE ( 1-2%)
Size(mm): TO 2
PLAG FRESH;
CLINOPYROXENE ( < 1%)
Size(mm): 2-3
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1280.50
Core: 130 Top of Core Depth (m) : 1279.00
Sect: 1 Top of Section Depth(m): 1279.00
LITHOLOGY: PLAG-OL-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-12), 2 (13-21), 3 (24-34), 4 (36-48),
5 (49-60), 6 (62-70), 7 (72-89), 8 (91-104),
9 (106-114), 10 (116-126), 11 (128-134),
12 (136-149);
Texture : MEDIUM GRAINED, MOD PHYRIC, UNIFORM TEXTURE;
Structure : VERY FEW VEINS (< 1 MM) FILLED WITH DARK BLUE GREEN
CLAY POSSIBLY CHLORITE, COMMON VERTICAL CRACKS,
LEFT SIDE OF PCE 5 AND TOP OF PCE 12 ARE FRACTURE
SURFACES COATED WITH DARK BLUE GREEN CLAY, PCE 8
CONTAINS DARK BLUE GREEN CLAY VEIN WITH A 5 MM WIDE
GREYISH ALTERATION ZONE;
Alteration : MOD
PCE 8 HAS DARK BLUE GREEN CLAY VEIN WITH 5 MM
WIDE GREYISH ALTERATION ZONE;
Comments : DARK GREY;
Replacement: CHLORITE
IDENTIFICATION UNCERTAIN, POSSIBLY IN VEINS;
CLAY
IN VEINS, PCE 8 HAS DARK BLUE GREEN CLAY VEIN,
PCE 5 AND TOP OF PCE 12 HAVE FRACTURED SURFACES
COATED WITH DARK BLUE GREEN CLAY;
PYRITE
RELATIVELY RARE DISSEMINATED PYRITE;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1282.00
Core: 130 Top of Core Depth (m) : 1279.00
Sect: 2 Top of Section Depth(m): 1280.50
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1A (3-14), 1B (14-19), 1C (20-26), 2 (30-60),
3 (63-69), 4A (71-86), 4B (85-89), 5 (90-99),
6 (101-107), 7 (109-118), 8 (121-135), 9 (137-141)
10 (144-148);
Texture : MOD PHYRIC, FINE TO MEDIUM GRAINED;
Structure : FEW VERY THIN (< 0.5 MM) FRACTURES FILLED WITH VERY
LIGHT GREY MINERAL, ON SOME EXPOSED CRACKS A DARK
GREEN MINERAL OCCURS WHICH IS LIGHT GREY WHEN
SCRATCHED (SEE PCES 1C + 2), IN PCE 9 A SULFIDE
OCCURS AS 4 MM PATCHES POSSIBLY PYRITE OR CHALPYR;
Alteration : MOD
CPX FRESH;
Comments : DARK GREY, SAME AS SECTIONS 1 AND 3, NO EXTERNAL
YELLOW COLORATION;
Phenocrysts: OLIVINE ( 2%)
Size(mm): 1-3
OL REPLACED BY DARK GREEN MINERAL (CHLOR WITHOUT
PYRITE);
PLAGIOCLASE ( 2%)
Size(mm): TO 2
CLINOPYROXENE ( 3%)
Size(mm): TO 4
CPX FRESH;
Replacement: CHLORITE
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL (CHLOR WITHOUT
PYRITE);
PYRITE
IDENTIFICATION UNCERTAIN ON PCE 9;
CHALCOPYRITE
IDENTIFICATION UNCERTAIN ON PCE 9;
SULFIDE
IN PCE 9 OCCURS AS 4 MM PATCHES;
Leg : 83 Top/Bottom Interval(mm): 0/1100 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1283.10
Core: 130 Top of Core Depth (m) : 1279.00
Sect: 3 Top of Section Depth(m): 1282.00
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (3-10), 2 (12-16), 3 (18-21), 4 (24-36),
5 (38-46), 6 (47-54), 7 (56-64), 8 (66-74),
9A (76-89), 9B (89-99), 10 (101-108);
Texture : MOD PHYRIC, FINE TO MEDIUM GRAINED, UNIFORM
THROUGHOUT SECTION;
Structure : SOME VEINLETS FILLED WITH DARK GREEN MINERAL
POSSIBLY CHLORITE, VERTICAL CRACKS ON SOME PIECES;
Alteration : MOD;
Comments : DARK GREY;
Phenocrysts: OLIVINE
Size(mm): TO 3
OL ALTERED - REPLACED BY DARK GREEN MATERIAL;
PLAGIOCLASE
Size(mm): TO 3
CLINOPYROXENE
Size(mm): TO 6
SOMETIMES APPEARS AS PRISMATIC CRYSTALS;
Replacement: CHLORITE
IDENTIFICATION UNCERTAIN, MAY BE DARK GREEN
MINERAL IN VEINLETS;
SULFIDE
MINOR SULFIDE DISSEMINATION;
Leg : 83 Top/Bottom Interval(mm): 0/1500 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1289.00
Core: 131 Top of Core Depth (m) : 1287.50
Sect: 1 Top of Section Depth(m): 1287.50
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-9), 2 (10-16), 3 (18-26), 4 (28-34),
5 (36-50), 6 (52-63), 7 (65-79), 8 (81-92),
9 (94-103), 10 (105-111), 11 (113-118),
12 (121-125), 13 (127-139), 14 (141-149);
Texture : FINE GRAINED, MOD PHYRIC, UNIFORM THROUGHOUT
SECTION, DIFFERENT GRAIN SIZE FROM CORE 130
SECTION 3;
Structure : VERY FEW VEINLETS FILLED WITH WHITE MATERIAL AND
DARK GREEN MATERIAL;
Alteration : MOD;
Comments : DARK GREY;
Phenocrysts: OLIVINE
Size(mm): TO 4
OL REPLACED BY DARK GREEN MINERAL;
PLAGIOCLASE
Size(mm): TO 5
CLINOPYROXENE
Size(mm): TO 6
OCCURS SOMETIMES AS PRISMS (ABUNDANT IN PCES 5-7);
Replacement: OTHER
Minerals Replaced: OL
DARK GREEN MINERALS, OL REPLACED BY DARK GREEN
MINERALS;
SULFIDE
MINOR SULFIDE DISSEMINATION;
Leg : 83 Top/Bottom Interval(mm): 0/ 690 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1289.69
Core: 131 Top of Core Depth (m) : 1287.50
Sect: 2 Top of Section Depth(m): 1289.00
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-9), 2 (10-16), 3 (18-26), 4 (28-38),
5 (41-49), 6 (51-59), 7 (62-68);
Texture : MOD PHYRIC, FINE GRAINED TO VERY FINE GRAINED,
PCES 5 AND 6 ON ONE SIDE FINER GRAINED (CLOSE TO
CONTACT), PCE 7 IS VERY FINE GRAINED AND APHYRIC;
Structure : VEINS MORE FREQUENT THAN IN SECTION 1 ARE FILLED
WITH DARK GREEN MATERIAL POSSIBLY CHLORITE;
Alteration : MOD;
Comments : DARK GREY;
Phenocrysts: OLIVINE
Size(mm): TO 3
OL REPLACED BY DARK GREEN MINERAL;
PLAGIOCLASE
Size(mm): TO 4
CLINOPYROXENE
Size(mm): TO 4
Replacement: SULFIDE
MINOR SULFIDE DISSEMINATION WIDESPREAD;
CHLORITE
VEINS FILLED WITH DARK GREEN MATERIAL POSSIBLY
CHLOR;
OTHER
Minerals Replaced: OL
OL REPLACED BY DARK GREEN MINERAL;
Leg : 83 Top/Bottom Interval(mm): 0/1470 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1296.47
Core: 132 Top of Core Depth (m) : 1295.00
Sect: 1 Top of Section Depth(m): 1295.00
LITHOLOGY: OL-PLAG-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (0-11), 2 (13-20), 3 (21-24), 4 (26-36),
5 (38-41), 6 (43-47), 7 (49-55), 8 (57-60),
9 (62-69), 10 (70-79), 11 (81-85), 12 (86-91),
13 (93-98), 14 (100-104), 15 (106-111),
16 (113-121), 17 (123-133), 18 (135-145);
Texture : SPARSELY PHYRIC, FINE TO MEDIUM GRAINED, PCES 1-11
APPEAR TO BE A UNIT WHICH COARSENS DOWN COLUMN,
PCES 12-14 ARE DISTINCTLY COARSER THAN ANYTHING
ELSE IN THE CORE;
Structure : VEINS ARE SMALL AND NOT ABUNDANT, VEINS FILLED
WITH GREEN MINERAL (CHLORITE) + PYRITE + WHITE
MINERALS IN THE CENTERS;
Alteration : MOD
ALTERATION MINOR IN GENERAL, PCE 16 IS UNUSUALLY
ALTERED IN COMPARISON TO THE REST OF THE SAMPLES
WITH THE MINERALS OCCURRING IN VEINS DISSEMINATED
THROUGH THE GROUNDMASS, OL ALTERED TO TWO
MINERALS - ONE LIGHT GREEN IN THE CORE AND THE
OTHER DARK GREEN AT RIMS, PYRITE ASSOCIATED WITH
OL ALTERATION;
Comments : GREY;
Phenocrysts: OLIVINE
Size(mm): < 1
OL ALTERED TO TWO MINERALS - ONE LIGHT GREEN IN
THE CORE AND THE OTHER DARK GREEN AT RIMS, PYRITE
ASSOCIATED WITH OL ALTERATION;
PLAGIOCLASE ( < 1%)
Size(mm): < 1
PLAG UNALTERED;
CLINOPYROXENE ( < 1%)
Size(mm): < 2
CPX UNALTERED;
Replacement: PYRITE
ASSOCIATED WITH OL ALTERATION, IN VEINS;
CHLORITE
IN VEINS;
OTHER
WHITE MINERALS IN THE CENTERS OF VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/ 270 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1296.77
Core: 132 Top of Core Depth (m) : 1295.00
Sect: 2 Top of Section Depth(m): 1296.50
LITHOLOGY: OL-PLAG-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-12), 2 (14-26);
Texture : SPARSELY PHYRIC, MEDIUM - FINE GRAINED;
Alteration : MOD
ALTERATION SIMILAR TO CORE 132 SECTION 1;
Comments : GREY;
Phenocrysts: OLIVINE ( < 1%)
Size(mm): 1
OL ALTERED;
PLAGIOCLASE ( < 1%)
CLINOPYROXENE ( < 1%)
Leg : 83 Top/Bottom Interval(mm): 0/ 70 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1304.07
Core: 133 Top of Core Depth (m) : 1304.00
Sect: 1 Top of Section Depth(m): 1304.00
LITHOLOGY: OL-PLAG-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCE 1 (3-6);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED;
Comments : CONTINUES FROM CORE 132 SECTION 2;
Leg : 83 Top/Bottom Interval(mm): 70/1430 Analyst: Adamson, A.C.
Hole: 504B Sample Midpoint (m) : 1305.43
Core: 133 Top of Core Depth (m) : 1304.00
Sect: 1 Top of Section Depth(m): 1304.07
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 2 (7-14), 3 (16-24), 4 (26-30), 5 (32-36),
6 (38-44), 7 (46-51), 8 (53-61), 9 (63-70),
10A (71-74), 10B (73-78), 11 (80-86), 12 (88-97),
13 (99-109), 14 (110-120), 15A (121-134),
15B (124-129), 15C (130-134), 16 (135-141);
Texture : MOD PHYRIC, FINE TO MEDIUM GRAINED, PCES 2-8 ARE
FINE GRAINED, PCES 9-16 ARE MEDIUM GRAINED, PCES 4
AND 8 HAVE CUT SURFACES WITH FRACTURES COMMONLY
SEEN CLOSE TO CHILLED MARGINS, BASALT BECOMES
SPARSELY PHYRIC TOWARDS BOTTOM OF CORE;
Structure : PCES 4 AND 8 HAVE VERY FINE NETWORK OF CRACKS (CUT
SURFACES HAVE FRACTURES COMMONLY SEEN CLOSE TO
CHILLED MARGINS), VEINS, WHITE + GREEN VEIN CUTS
GREEN VEIN IN PCE 16, SEE ALTERATION FOR MORE
INFORMATION ON VEINS;
Alteration : MOD
PCES 4 AND 8 HAVE VERY FINE NETWORK OF CRACKS +
THESE ARE FILLED MAINLY BY DARK GREEN ALTERATION
MINERAL WITH PALE GREY ZONES ADJACENT TO THE VEINS
IN THE DARKER BASALT (5 MM), WHITE FIBROUS
VEIN MINERAL IN PCES 14 AND 15 ACT AS LATE STAGE
FILLER TO GREEN VEINS, WHITE + GREEN VEIN CUTS
GREEN VEIN IN PCE 16, PERVASIVE ALTERATION OF THE
BASALT IS LOCALLY INTENSE PARTICULARLY TOWARDS
BOTTOM OF THE CORE;
Phenocrysts: OLIVINE ( 2%)
Size(mm): 2
OL ALTERED TO DARK GREEN MINERAL;
PLAGIOCLASE ( 2%)
Size(mm): 2
NOT EASY TO SEE;
CLINOPYROXENE ( 1-2%)
Size(mm): TO 8
Replacement: OTHER
DARK GREEN MINERAL, PCES 4 AND 8 HAVE VERY FINE
NETWORK OF CRACKS FILLED MAINLY BY DARK GREEN
ALTERATION MINERAL;
OTHER
WHITE FIBROUS VEIN MINERAL IN PCES 14 AND 15;
Leg : 83 Top/Bottom Interval(mm): 0/ 760 Analyst:
Hole: 504B Sample Midpoint (m) : 1306.26
Core: 133 Top of Core Depth (m) : 1304.00
Sect: 2 Top of Section Depth(m): 1305.50
LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (3-14), 2 (16-23), 3 (25-30), 4 (32-42),
5 (44-50), 6 (52-56), 7 (58-64), 8 (66-74);
Alteration : MOD
INTERVAL (3-32) + (42-74) CM;
MOD TO EXT
INTERVAL (32-42) CM;
Comments : VISUAL CORE DESCRIPTION FOR CORE 133 SECTION 2
IS MISSING, PRESENT INFORMATION OBTAINED FROM
INITIAL REPORTS, CORE 133 SECTION 2 BELONGS TO
SAME UNIT AS PCES 2-16 OF CORE 133 SECTION 1 -
SEE DESCRIPTION FOR CORE 133 SECTION 1 FOR
FURTHER INFORMATION;
Leg : 83 Top/Bottom Interval(mm): 0/1480 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1314.48
Core: 134 Top of Core Depth (m) : 1313.00
Sect: 1 Top of Section Depth(m): 1313.00
LITHOLOGY: OL-PLAG-CPX SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-7), 2 (9-16), 3 (19-24), 4 (26-31),
5 (33-40), 6 (42-51), 7 (53-57), 8 (60-64),
9 (67-74), 10 (76-81), 11 (84-89), 12 (91-96),
13 (98-101), 14 (104-108), 15 (111-116),
16 (118-121), 17 (123-127), 18 (129-134),
19 (136-146);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM GRAINED, PCE 1 AND 2
ARE FINER GRAINED THAN THE LAST OF CORE 133
SECTION 2;
Structure : VEINS ARE RARE AND THIN (< .5 MM) FILLED WITH DARK
GREEN MINERAL, IN PCE 19 THREE VEINS OF WHITE
MATERIAL AND SOMETIMES DARK GREEN MATERIAL;
Alteration : FRESH
LIGHT GREYISH GREEN ALTERATION HALOS (UP TO 15 MM
WIDE) OCCUR AROUND SOME OF THESE VEINS, PCES 16-19
EXHIBIT LARGE (UP TO 20 CM) PATCHES OF HIGHLY
ALTERED GREEN BASALT + THE CONTACT BETWEEN THESE
PATCHES AND FRESHER BASALT IS PROGRESSIVE AND
COMPOSED BY A LIGHTER GREY AREA, CPX FRESH;
Comments : DARK GREY;
Phenocrysts: CLINOPYROXENE ( TO 2%)
Size(mm): TO 1
CPX FRESH;
OLIVINE
Size(mm): TO 5
OL REPLACED BY DARK GREEN MINERAL, OL REPLACEMENT
WITH POSSIBLY PYRITE AND LIGHT GREEN MINERAL;
PLAGIOCLASE
Size(mm): TO 3
Replacement: OTHER
DARK GREEN MINERAL IN VEINS, OL REPLACED BY DARK
GREEN MINERAL;
PYRITE
Leg : 83 Top/Bottom Interval(mm): 0/ 110 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1319.11
Core: 135 Top of Core Depth (m) : 1319.00
Sect: 1 Top of Section Depth(m): 1319.00
LITHOLOGY: OL-PLAG-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-1O);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED, VERY UNIFORM
THROUGHOUT SECTION;
Structure : THREE VEINS (UP TO 3 MM WIDE) FILLED WITH DARK GREEN
MATERIAL AT THE WALLS AND A WHITE MINERAL + MINOR
SULFIDES IN THE CENTER, ALTERATION HALOS AROUND
VEINS;
Alteration : MOD TO EXT
LIGHT GREENISH GREY ALTERATION HALOS UP TO 8.3 MM
AROUND VEINS;
Comments : GREENISH GREY, YELLOWISH-ORANGE STAINING ON OUTER
SURFACES OF ALL PIECES;
Replacement: ZEOLITE
IDENTIFICATION UNCERTAIN, POSSIBLY WHITE MINERAL
IN VEIN;
SULFIDE
MINOR SULFIDES IN VEINS, MINOR SULFIDE
DISSEMINATION;
Leg : 83 Top/Bottom Interval(mm): 0/ 200 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1322.20
Core: 136 Top of Core Depth (m) : 1322.00
Sect: 1 Top of Section Depth(m): 1322.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (3-8), 2 (10-15), 3 (17-20);
Texture : APHYRIC, VERY FINE GRAINED;
Alteration : MOD;
Comments : DARK GREY;
Leg : 83 Top/Bottom Interval(mm): 200/ 560 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1322.56
Core: 136 Top of Core Depth (m) : 1322.00
Sect: 1 Top of Section Depth(m): 1322.20
LITHOLOGY: PLAG-OL-CPX MODERATELY PHYRIC BASALT;
Piece No. : PCES 4 (23-29), 5 (31-40), 6 (42-46), 7 (48-54);
Texture : MOD PHYRIC, FINE GRAINED;
Alteration : MOD;
Comments : DARK GREY;
Phenocrysts: OLIVINE
Size(mm): TO 4
OL PHENOS RELATIVELY ABUNDANT REPLACED BY DARK
GREEN MINERAL + LIGHT GREEN MINERAL OR ONLY BY ONE
OF THESE MINERALS;
CLINOPYROXENE
Size(mm): TO 8
PRISMS UP TO 8 MM;
PLAGIOCLASE
Size(mm): TO 4
Replacement: OL REPLACED BY DARK GREEN MINERAL + LIGHT GREEN
MINERAL;
Leg : 83 Top/Bottom Interval(mm): 560/ 900 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 1322.90
Core: 136 Top of Core Depth (m) : 1322.00
Sect: 1 Top of Section Depth(m): 1322.56
LITHOLOGY: OL-PLAG-CPX MODERATELY PHYRIC BASALT;
Piece No. : PCES 8 (56-62), 9 (64-70), 10 (73-82),
11 (84-90);
Texture : MOD PHYRIC, FINE TO MEDIUM GRAINED;
Structure : SOME VEINLETS (< 1 MM) FILLED WITH DARK GREEN
MATERIAL, VEINS, PCE 5 HAS WHITE VEINLET (< 1 MM
THICK), ON PCE 10 TRANSPARENT UNIDENTIFIED
MINERAL AT THE INTERSECTION OF TWO CRACKS;
Alteration : MOD
PCE 2 HAS ALTERATION HALO (< 0.5 MM) OF GREENISH
GREY, PCE 4 ALTERED ALONG VEINS, ALTERATION HALO
ON PCE 4 UP TO 1 CM THICK COMPOSED BY GREEN
MINERAL + TRANSPARENT MINERAL + WHITE MINERAL
POSSIBLY ZEOLITE;
Comments : DARK GREY;
Phenocrysts: OLIVINE
OL REPLACED BY DARK GREEN MINERAL ONLY;
Replacement: OTHER
Minerals Replaced: OL
DARK GREEN MINERAL, OL REPLACED BY DARK GREEN
MINERAL ONLY;
ZEOLITE
IDENTIFICATION UNCERTAIN POSSIBLY WHITE MINERAL
IN VEINS;
OTHER
TRANSPARENT UNIDENTIFIED MINERAL AT THE
INTERSECTION OF TWO CRACKS;
SULFIDES
MINOR SULFIDE DISSEMINATION IN ALL THE PIECES;
Leg : 83 Top/Bottom Interval(mm): 0/1350 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1328.35
Core: 137 Top of Core Depth (m) : 1327.00
Sect: 1 Top of Section Depth(m): 1327.00
LITHOLOGY: OL-PLAG-CPX MOD TO PHYRIC BASALT;
Piece No. : PCES 1 (2-9), 2 (11-16), 3 (18-26), 4 (28-39),
5 (42-49), 6 (51-60), 7 (62-66), 8 (68-90),
9 (92-99), 10 (101-114), 11 (116-124), 12 (126-135);
Texture : MOD TO PHYRIC, FINE TO MEDIUM GRAINED, RELATIVELY
UNIFORM THROUGHOUT CORE, PCES 1 + 2 + 7 + 9 ARE
SOMEWHAT FINER GRAINED, PCES 4 + 5 + 6 + 10 + 11 +
12 ARE HIGHLY PHYRIC;
Structure : MASSIVE, VERY FEW VEINS - FILLED WITH WHITE MINERALS
AND SOMETIMES ALTERATION HALOS ALONG VEINS;
Alteration : MOD
MODERATELY ALTERED, VERY FEW VEINS FILLED WITH
WHITE MINERALS WITH SOMETIMES ALTERATION HALOS
ALONG VEINS;
Comments : DARK GREY;
Phenocrysts: OLIVINE
Size(mm): TO 5
OL REPLACED BY GREEN + DARK REDDISH BROWN
MINERALS;
PLAGIOCLASE
Size(mm): TO 5
CLINOPYROXENE
Size(mm): TO 10
OCCUR AS PRISMS ABUNDANT ON PCES 6 + 9 + 10 + 11
+ 12;
Replacement: SULFIDE
RARE SULFIDE DISSEMINATION;
OTHER
OL REPLACED BY GREEN + DARK REDDISH BROWN
MINERALS;
OTHER
WHITE MINERALS, VEINS FILLED WITH WHITE MINERALS;
Leg : 83 Top/Bottom Interval(mm): 0/ 720 Analyst: Kempton, P.D.
Hole: 504B Sample Midpoint (m) : 1332.72
Core: 138 Top of Core Depth (m) : 1332.00
Sect: 1 Top of Section Depth(m): 1332.00
LITHOLOGY: OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-9), 2 (10-13), 3 (14-21), 4 (22-30),
5 (32-39), 6 (41-49), 7 (51-60), 8 (62-70);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED;
Structure : VEINS ARE FILLED WITH WHITE MINERALS + ARE 1 MM
WIDE + ARE NOT VERY ABUNDANT, FRACTURES ARE NOT
EXTENSIVE AND NOT FILLED BY MUCH ALTERATION MINERALS
AND ARE MOST COMMONLY SEEN ON PCES 4 + 5;
Alteration : MOD
OL ALTERED TO DARK GREEN MINERAL, ALTERATION NOT
ESPECIALLY EXTENSIVE - ALTHOUGH THERE ARE ZONES
OF 1 CM WIDE THAT HAVE A LIGHTER GREY COLOR WITH
DARKER CENTRAL PORTIONS (POSSIBLY CHLORITE THAT
ALTER IN IRREGULAR PATTERNS THE REST OF THE ROCK),
FRACTURES ARE NOT EXTENSIVE AND ARE NOT FILLED BY
MUCH ALTERATION MINERALS;
Comments : GREY, DOES NOT HAVE THE PALE GREEN CORES SO COMMON
BEFORE AND THERE LOOKS LIKE THERE MAY BE A RIM OF
SOMETHING DIFFERENT LIKE THE VERY BLACK CORES
OCCURRING THIS TIME;
Phenocrysts: OLIVINE ( < 1%)
Size(mm): < 2
OL ALTERED TO DARK GREEN MINERAL;
PLAGIOCLASE ( 1-2%)
POSSIBLY 1-2 PERCENT PLAG BUT DIFFICULT TO TELL;
Replacement: PYRITE
MINOR PYRITE PRESENT;
OTHER
OL ALTERED TO DARK GREEN MINERAL;
OTHER
WHITE MINERALS FILL VEINS;
CHLORITE
IDENTIFICATION UNCERTAIN;
Leg : 83 Top/Bottom Interval(mm): 0/ 270 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1336.77
Core: 139 Top of Core Depth (m) : 1336.50
Sect: 1 Top of Section Depth(m): 1336.50
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-9), 4 (23-27);
Texture : SPARSELY PHYRIC, FINE GRAINED;
Structure : VEINS OF DARK GREEN CLAY.MIN + VEINS OF WHITE
FIBROUS PLATY MINERAL POSSIBLY ANHYDRITE + PALE
GREENISH MINERAL;
Alteration : MOD;
Comments : DARK GREY;
Replacement: CLAY MINERALS
DARK GREEN CLAY MINERAL IN VEINS;
ANHYDRITE
IDENTIFICATION UNCERTAIN;
OTHER
WHITE FIBROUS PLATY MINERAL POSSIBLY ANHYDRITE
+ PALE GREENISH MINERAL IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 100/ 160 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1336.66
Core: 139 Top of Core Depth (m) : 1336.50
Sect: 1 Top of Section Depth(m): 1336.60
LITHOLOGY: PLAG-OL-CPX MOD PHYRIC BASALT;
PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 2 (11-15);
Texture : MOD PHYRIC, PCE 2 POSSIBLE CHILLED DIKE MARGIN
OF PLAG-OL-CPX MOD PHYRIC BASALT CHILLED AGAINST
FINE GRAINED PLAG-OL SPARSELY PHYRIC BASALT;
Alteration : MOD;
Leg : 83 Top/Bottom Interval(mm): 160/ 220 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1336.72
Core: 139 Top of Core Depth (m) : 1336.50
Sect: 1 Top of Section Depth(m): 1336.66
LITHOLOGY: PLAG-OL-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCE 3 (17-21);
Texture : SPARSELY PHYRIC, FINE GRAINED;
Structure : VEINS SIMILAR TO THOSE IN PCES 1 AND 4;
Alteration : MOD;
Comments : DARK GREY;
Phenocrysts: CLINOPYROXENE
ONLY ONE CPX PHENOCRYST OBSERVED;
Leg : 83 Top/Bottom Interval(mm): 270/ 550 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1337.05
Core: 139 Top of Core Depth (m) : 1336.50
Sect: 1 Top of Section Depth(m): 1336.77
LITHOLOGY: PLAG-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 5 (28-35), 6 (37-46), 7 (48-52);
Texture : SPARSELY PHYRIC, MEDIUM GRAINED;
Structure : VEINS OF DARK GREEN CLAY + MINOR WHITE PLATY
MINERAL POSSIBLY ANHYDRITE;
Alteration : MOD;
Comments : DARK GREENISH;
Replacement: CLAY MINERALS
VEINS OF DARK GREEN CLAY;
ANHYDRITE
IDENTIFICATION UNCERTAIN, MINOR WHITE PLATY
MINERAL IN VEIN POSSIBLY ANHYDRITE;
Leg : 83 Top/Bottom Interval(mm): 0/ 450 Analyst: Alt, J.C.
Hole: 504B Sample Midpoint (m) : 1341.45
Core: 140 Top of Core Depth (m) : 1341.00
Sect: 1 Top of Section Depth(m): 1341.00
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-9), 2 (11-15), 3 (17-30), 4 (32-36),
5 (39-43);
Texture : APHYRIC TO SPARSELY PHYRIC, PCES 1-3 ARE MEDIUM
GRAINED, PCES 4 + 5 ARE FINE GRAINED, PCE 1 CONTAINS
INTRUSIVE FINGERS OF CHILLED FINE GRAINED SPARSELY
PHYRIC BASALT (GLASS ALTERED);
Structure : PCE 3 ESPECIALLY FRACTURED, FRACTURES FILLED WITH
DARK GREEN CLAY OFTEN WITH GREYISH TO WHITE MINERAL
AT CENTERS OF VEINS - APPARENTLY TWO WHITE MINERALS
ARE PRESENT WHERE ONE IS PLATY WHITE AND THE OTHER
IS FIBROUS OR PRISMATIC;
Alteration : MOD
GENERALLY DARK GREY IN COLOR BUT ALTERED TO DARK
GREEN ALONG FRACTURES;
Comments : DARK GREY;
Replacement: CLAY MINERALS
DARK GREEN CLAY IN FRACTURES;
ANHYDRITE
IDENTIFICATION UNCERTAIN, POSSIBLY THE PLATY
WHITE MINERAL FOUND IN VEINS;
ZEOLITE
IDENTIFICATION UNCERTAIN, POSSIBLY THE FIBROUS OR
PRISMATIC WHITE MINERAL FOUND IN VEINS;
Leg : 83 Top/Bottom Interval(mm): 0/ 330 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1345.83
Core: 141 Top of Core Depth (m) : 1345.50
Sect: 1 Top of Section Depth(m): 1345.50
LITHOLOGY: OL-PLAG-CPX SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 1 (3-6), 2 (8-15), 3 (17-21), 5 (26-31);
Texture : SPARSELY TO MOD PHYRIC, FINE GRAINED, CLOSE TO
CHILLED MARGIN;
Alteration : MOD
INTERVAL (0-22) + (26-33) CM;
Comments : DARK GREY;
Phenocrysts: OLIVINE
Size(mm): 6
OL REPLACED BY DARK GREEN + REDDISH-BROWN
MATERIAL;
PLAGIOCLASE
Size(mm): 3
CLINOPYROXENE
Size(mm): 4
Replacement: SULFIDE
MINOR SULFIDE DISSEMINATION;
OTHER
DARK GREEN + REDDISH BROWN MATERIAL, OL REPLACED
BY DARK GREEN + REDDISH-BROWN MATERIAL;
Leg : 83 Top/Bottom Interval(mm): 220/ 730 Analyst: Emmermann, R.
Hole: 504B Sample Midpoint (m) : 1346.23
Core: 141 Top of Core Depth (m) : 1345.50
Sect: 1 Top of Section Depth(m): 1345.72
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCES 4 (22-25), 6 (34-48), 7 (51-61), 8 (63-72);
Texture : MOD PHYRIC, VERY FINE GRAINED, CLOSE TO CHILLED
CONTACT;
Structure : MANY THIN VEINS (< 1.5 MM) FILLED WITH DARK GREEN
MATERIAL, FEW BROAD VEINS (UP TO 1 CM) ESPECIALLY
ON PCES 7 AND 8 FILLED WITH ANHYDRITE AND LIGHT
GREEN MINERAL;
Alteration : MOD
INTERVAL (22-26) CM;
EXT
INTERVAL (33-73) CM
STRONGLY ALTERED;
Comments : GREENISH GREY, CLOSE TO CHILLED CONTACT;
Phenocrysts: CLINOPYROXENE
POSSIBLY PRESENT;
Replacement: ANHYDRITE
IN VEINS;
SULFIDE
RARE SULFIDES;
OTHER
LIGHT GREEN MINERAL IN A FEW BROAD VEINS;
OTHER
DARK GREEN MATERIAL IN THE MANY THIN VEINS;
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