Leg : 60 Top/Bottom Interval(mm): 0/ 400 Analyst: Meijer, A.
Hole: 459B Sample Midpoint (m) : 558.90
Core: 60 Top of Core Depth (m) : 558.50
Sect: 1 Top of Section Depth(m): 558.50
LITHOLOGY: SEDIMENT;
Leg : 60 Top/Bottom Interval(mm): 400/1480 Analyst: Meijer, A.
Hole: 459B Sample Midpoint (m) : 559.98
Core: 60 Top of Core Depth (m) : 558.50
Sect: 1 Top of Section Depth(m): 558.90
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (40-52), 2 (53-60), 3 (62-66), 4 (69-71),
5 (73-77), 6 (80-83), 7 (86-93), 8 (94-101),
9 (103-110), 10 (113-117), 11 (120-130),
12 (132-138), 13 (140-148);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, NEARLY HOLOXTLN,
MESOSTASIS ALTERED TO BROWN CLAY;
Structure : SOME CLAY ON EXTERIOR FRACTURE SURFACES IS PINK IN
COLOR, CORE IS PART OF MASSIVE FLOW POSSIBLY 30
METERS THICK;
Alteration : MOD
SOME SAMPLES VERY FRESH LOOKING;
Comments : COLOR IS GREENISH GREY (5Y5/1);
Vesicles : Size(mm): 0.1-3 Percent: 30-40
Location: Filling: CARB
Replacement: CARBONATE
AS VESICLE AND OUTER SURFACE COATING;
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/ 990 Analyst: Meijer, A.
Hole: 459B Sample Midpoint (m) : 560.99
Core: 60 Top of Core Depth (m) : 558.50
Sect: 2 Top of Section Depth(m): 560.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-10), 2 (13-19), 3A (23-30), 3B (34-37),
4 (40-43), 5 (47-48), 6A (52-56), 6B (58-64),
6C (65-69), 7 (72-76), 8 (78-99);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, INTERSERTAL,
HOLOXTLN, MESOSTASIS ALTERED TO BROWN CLAY POSSIBLY
THROUGH OXIDATION;
Structure : SOME CLAY ON EXTERIOR FRACTURE SURFACES PINK IN
COLOR;
Alteration : MOD;
Comments : GREENISH GREY (5Y5/1), CLAY DISCOLORATION IN PCE 3;
Vesicles : Size(mm): 0.1-2 Percent: 40-50
Location: Filling: CARB
Replacement: CARBONATE
AS VESICLE AND OUTER SURFACE COATING;
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/1470 Analyst: Meijer, A.
Hole: 459B Sample Midpoint (m) : 569.47
Core: 61 Top of Core Depth (m) : 568.00
Sect: 1 Top of Section Depth(m): 568.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-12), 2 (15-23), 3 (26-32), 4 (35-40),
5 (43-54), 6 (57-62), 7 (64-68), 8 (72-80),
9 (83-90), 10 (94-107), 11 (110-117),
12 (120-123), 13 (125-132), 14 (135-147);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, NEARLY HOLOXTLN,
MESOSTASIS ALTERED TO BROWN AND APPLE GREEN CLAY
MINERALS;
Structure : MINOR VEINS OF YELLOW GREEN CLAY;
Alteration : MOD
ALTERATION RINDS IN SEVERAL PCES, ROCK HAS BEEN
OXIDIZED;
Comments : BROWN TO YELLOW GREEN TO APPLE GREEN CLAYS PRESENT,
SOME GREENISH GREY BASALT (5GY5/1);
Vesicles : Size(mm): 0.1-1 Percent: 20-30
Location: Filling: CARB
Replacement: CARBONATE
IN VESICLES AND AS COATINGS ON EXTERIOR SURFACES;
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/ 950 Analyst: Meijer, A.
Hole: 459B Sample Midpoint (m) : 570.45
Core: 61 Top of Core Depth (m) : 568.00
Sect: 2 Top of Section Depth(m): 569.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (3-8), 2 (12-18), 3 (21-23), 4 (28-31),
5 (35-39), 6 (42-48), 7 (53-62), 8 (64-73),
9 (76-83), 10 (82-95);
Texture : APHYRIC, SIMILAR TO PREVIOUS SECTION;
Alteration : MOD;
Comments : GENERALLY GREENER;
Vesicles : LESS VESICULAR THAN PREVIOUS SECTION, CARB AND
CLAY.MIN FILL VESICLES;
Replacement: CARBONATE
IN VESICLES AND AS COATINGS ON EXTERIOR SURFACES;
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/1250 Analyst: Meijer, A.
Hole: 459B Sample Midpoint (m) : 578.75
Core: 62 Top of Core Depth (m) : 577.50
Sect: 1 Top of Section Depth(m): 577.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (3-14), 2 (16-24), 3 (26-40), 4 (44-53),
5 (56-57), 6 (65-71), 7 (73-81), 8 (84-87),
9 (90-93), 10 (96-105), 11 (109-113), 12 (118-125);
Texture : APHYRIC, SIMILAR TO PREVIOUS SECTION, GRAIN SIZE
CONSISTENT;
Structure : CLEAR TO BLACKISH GREEN CLAY ON EXTERIOR FRACTURE
SURFACES;
Alteration : MOD;
Comments : GREENISH GREY (5GY5/1) TO OLIVE GREY (5Y4/2) ON
OXIDATION RINDS, ONE SMALL FRAGMENT OF ORANGE PINK
SEDIMENT IN PCE 1;
Replacement: CARBONATE
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/ 840 Analyst: Meijer, A.
Hole: 459B Sample Midpoint (m) : 587.84
Core: 63 Top of Core Depth (m) : 587.00
Sect: 1 Top of Section Depth(m): 587.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-13), 2 (15-17), 3 (20-29), 4 (32-35),
5 (36-45), 6 (47-54), 7 (56-61), 8 (63-68),
9 (70-78), 10 (81-84);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, FINER GRAINED THAN
PREVIOUS CORE, LESS CLAY ALTERATION OF THE
MESOSTASIS;
Structure : SOME GREENISH BLACK CLAYS COAT EXTERIOR SURFACES OF
FRACTURES;
Alteration : MOD;
Comments : PCE 1 CONSISTS OF PCES OF PINKISH ORANGE CLAYSTONE
WHICH MAY BE DRILLING BRECCIA FROM ABOVE DURING
DRILLING, GREENISH GREY CARB (5G4/1);
Replacement: CARBONATE
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/ 530 Analyst: Meijer, A.
Hole: 459B Sample Midpoint (m) : 597.03
Core: 64 Top of Core Depth (m) : 596.50
Sect: 1 Top of Section Depth(m): 596.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-13), 2 (17-38), 3 (42-47), 4 (50-53);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, MESOSTASIS SLIGHTLY
ALTERED;
Structure : GREENISH BLACK CLAY ON EXTERIOR SURFACES IN PCES
3-4;
Alteration : MOD;
Comments : SEVERAL PCES IN PCE 1 ARE SEDIMENTARY AND POSSIBLY
REWORKED FROM UPPER PART OF HOLE, BASALT GREENISH
GREY (5Y4/1), NOT OBVIOUSLY OXIDIZED;
Vesicles : Size(mm): 0.1-1 Percent: 20-30
Replacement: CARBONATE
NOT OBVIOUS;
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Meijer, A.
Hole: 459B Sample Midpoint (m) : 607.50
Core: 65 Top of Core Depth (m) : 606.00
Sect: 1 Top of Section Depth(m): 606.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-3), 2 (7-9), 3 (11-16), 4 (18-21),
5 (25-28), 6 (30-32), 7 (34-38), 8 (57-61),
9 (72-85), 10A (86-91), 10B (92-97),
11 (116-122), 12 (123-128), 13 (128-133);
Texture : APHYRIC, FINE GRAINED;
Structure : HIGHLY FRACTURED BASALT, EXTERIOR FRACTURE SURFACES
GENERALLY COATED WITH GREENISH BLACK TO APPLE GREEN
CLAY, PCE 7 AND SOME OF THE FRACTURED MATERIAL
APPEARS TO BE A PILLOW RIND THAT IS HIGHLY FRACTURED
AND CONTAINS ZEOLITES IN CAVITIES AND VEINS, CLAY
CONTENT VERY HIGH IN FRACTURED MATERIAL;
Alteration : EXT
CLAY CONTENT VERY HIGH IN FRACTURED MATERIAL;
Comments : COLOR OLIVE BLACK (5Y2/1) TO DARK GREENISH GREY
(5GY4/1);
Vesicles : Size(mm): 0.1-3 Percent: 10-40
VESICLES GENERALLY LINED WITH GREEN CLAY, PCE 10
HAS VERTICAL VESICLE TRAIN WITH VESICLES <3MM IN
LENGTH, THEY ARE HIGH IN CLAY CONTENT AND ARE
GREENISH GREY IN COLOR;
Replacement: CARBONATE
CLAY MINERALS
ZEOLITE
Leg : 60 Top/Bottom Interval(mm): 0/ 180 Analyst: Meijer, A.
Hole: 459B Sample Midpoint (m) : 607.83
Core: 65 Top of Core Depth (m) : 606.00
Sect: CC Top of Section Depth(m): 607.75
LITHOLOGY: DRILLING FLOUR;
Piece No. : PCE 1 (3-18);
Texture : CONSISTS OF DRILLING FLOUR MADE UP OF GREENISH BLACK
TO DARK GREENISH GREY BASALTIC MATERIAL;
Alteration : ALMOST COMPLETELY ALTERED;
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 617.00
Core: 66 Top of Core Depth (m) : 615.50
Sect: 1 Top of Section Depth(m): 615.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-7), 2A (10-13), 2B (13-16), 3 (18-25),
4A (28-31), 4B (32-48), 4C (51-60), 5 (62-65),
6 (68-71), 7 (73-81), 8 (84-89), 9 (93-112),
10 (113-122), 11A (124-126), 11B (127-134),
11C (129-139), 11D (138-143), 12 (146-150);
Texture : APHYRIC, MEDIUM GRAINED, GRAIN SIZE IS UNIFORM
THROUGHOUT, GREEN OR BROWN CLAYS FORM A MATRIX;
Structure : FRACTURE SURFACES AND SLICKENSIDES ARE PRESENT,
FRACTURING IS MORE INTENSE AT THE BOTTOM OF THE
SECTION FROM PCE 11A-12 ALTHOUGH THE ROCKS ARE
SIMILAR;
Alteration : EXT;
ALMOST COMPLETELY ALTERED
123-150CM;
Comments : DARK GREENISH GREY (5G4/1) TO GREENISH BLACK (5G2/1)
BASALT, MINOR PATCHES SLIGHTLY BROWN COLOR ON PCES
3-4A (5YR4/1), FRACTURE SURFACES ARE DARK GREENISH
BLACK (5GY2/1), SLICKENSIDES ARE PALE GREY AND
WHITE;
Vesicles : Size(mm): 1-5 Percent:
Location: Filling: CLAY.MIN
VESICULARITY GREATEST IN PCES 4A+4C-7;
Replacement: CLAY MINERALS
CARBONATE ( 0%)
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 618.50
Core: 66 Top of Core Depth (m) : 615.50
Sect: 2 Top of Section Depth(m): 617.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-41), 2 (44-51), 3 (52-70), 4 (72-82),
5 (84-89), 6A (91-100), 6B (102-106), 6C (102-105),
7 (107-111), 8A (116-121), 8B (123-128),
8C (130-136), 8D (135-144), 8E (144-150);
Texture : APHYRIC, FRAGMENTS ARE MEDIUM GRAINED, PCES 8A-E ARE
SLIGHTLY MORE COARSE GRAINED THAN ROCKS HIGHER IN
THE SECTION;
Structure : PCES 1-2+4-5 ARE HIGHLY SHEARED BASALT WITH
SLICKENSIDES PRESENT;
Alteration : EXT;
ALMOST COMPLETELY ALTERED
0-50CM;
Comments : PCES 1-2 ARE DARK GREENISH GREY (5G4/1), PCES
THROUGH 7 CONTAIN ABUNDANT CLAYS WHICH MAKE THEM
GREENER THAN THE ROCKS ABOVE OR BELOW, ALTERATION IN
PCES 8A-E HAS PRODUCED A BROWNISH GREY (5YR4/1)
STAINING, SLICKENSIDES RANGE FROM WHITE TO GREENISH
BLACK;
Vesicles : Size(mm): Percent: 2
PCES 1-2, PCE 3 CONTAINS SOME LARGE VESICLES
ENCRUSTED WITH GREEN CLAY.MIN;
Replacement: CLAY MINERALS
CARBONATE ( 0%)
Leg : 60 Top/Bottom Interval(mm): 0/ 450 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 618.95
Core: 66 Top of Core Depth (m) : 615.50
Sect: 3 Top of Section Depth(m): 618.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-10), 2 (13-18), 3 (22-26), 4 (28-36),
5 (38-45);
Texture : APHYRIC, ROCK FRAGMENTS ARE MEDIUM GRAINED BUT
SLIGHTLY MORE COARSE GRAINED THAN THE ROCKS HIGHER
IN THE CORE, PCES 4-5 ARE RUBBLY MATERIAL;
Alteration : EXT;
ALMOST COMPLETELY ALTERED
37-45CM;
Comments : DARK GREENISH GREY MATRIX (5G4/1) WITH PLACES THAT
IS STAINED BROWNISH GREY (5YR4/1);
Vesicles : Size(mm): Percent: 5
Leg : 60 Top/Bottom Interval(mm): 0/1470 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 626.47
Core: 67 Top of Core Depth (m) : 625.00
Sect: 1 Top of Section Depth(m): 625.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-5), 2 (9-12), 3 (14-16), 4A (20-28),
4B (29-30), 4C (30-37), 4D (35-40), 4E (41-44),
5 (46-51), 6A (54-66), 6B (67-79), 7 (81-91),
8A (93-104), 8B (105-112), 8C (112-121),
8D (121-128), 8E (129-139), 8F (140-142),
9 (145-147);
Texture : APHYRIC, PCE 1 IS PILLOW BASALT RIND WITH THE
FORMERLY GLASSY MARGIN FRACTURED AND TOTALLY
REPLACED BY CHLORITE AND CLAYS, PCES 2-4E+8A-9
ARE MEDIUM GRAINED;
Structure : SURFACE OF ALTERED GLASS IN PCE 1 IS SLICKENSIDED,
PATCHES AND BANDS OF BROWNISH GREY DISCOLORATION
THROUGHOUT THE FRAGMENTS BUT PARTICULARLY NEAR
CRACKS AND FRACTURES, FRACTURE SURFACES IN THE ROCKS
SHOW WHITE TO DARK GREENISH BLACK MINERAL
ENCRUSTATION AND SOME OF THE MATERIAL IS
SLICKENSIDED;
Alteration : EXT;
ALMOST COMPLETELY ALTERED
52-90CM;
Comments : DISCOLORATION OF BROWNISH GREY (5YR4/1), FRACTURES
ARE DARK GREENISH BLACK (5GY2/1);
Vesicles : Size(mm): Percent: 10
PCES 2-4E, PCES 8A-9 ARE NON-VESICULAR, GREEN
CLAYS FORM VESICLE ENCRUSTATION AND OCCUR
THROUGHOUT MATRIX;
Replacement: CLAY MINERALS
CHLORITE
Leg : 60 Top/Bottom Interval(mm): 0/1090 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 627.59
Core: 67 Top of Core Depth (m) : 625.00
Sect: 2 Top of Section Depth(m): 626.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (3-7), 1B (8-14), 2 (16-29), 3 (30-36),
4 (38-45), 5 (48-54), 6 (57-63), 7 (65-74),
8 (76-82), 9 (85-91), 10A (93-102), 10B (103-109);
Texture : APHYRIC, ROCK FRAGMENTS SHOW A SLIGHT COARSENING OF
GRAIN SIZE FROM MEDIUM TO COARSER MEDIUM GRAINED
FROM TOP TO BOTTOM OF THE SECTION, PCE 9 IS A NUMBER
OF BASALT PEBBLES AND GREEN CLAY;
Structure : PCE 5 SHOWS A CONTACT BETWEEN ALTERED BASALT AND A
FRACTURE FILLING OR MORE HIGHLY ALTERED BASALTIC
MATERIAL;
Alteration : EXT;
ALMOST COMPLETELY ALTERED
PCE 9;
Comments : BASALT IS DARK GREENISH GREY (5G4/1), OCCASIONAL
PATCHES OF BROWNISH GREY (5YR4/1) TO MOD YELLOWISH
BROWN (10YR5/4) INDICATE DIFFERENT KINDS OF
ALTERATION;
Vesicles : Size(mm): Percent: 1
Replacement: CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/ 640 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 635.14
Core: 68 Top of Core Depth (m) : 634.50
Sect: 1 Top of Section Depth(m): 634.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-16), 2 (19-25), 3 (28-42), 4A (45-47),
4B (48-54), 5 (58-64);
Texture : APHYRIC, COARSE TO MEDIUM GRAINED, PCE 2 IS MEDIUM
GRAINED;
Structure : PCES 3-5 SHOW SOME FRACTURING, PCE 4A SHOWS
SLICKENSIDES;
Alteration : EXT;
Comments : PCE 2 IS SLIGHTLY BROWNER THAN PCE 1 OR THE OTHER
FRAGMENTS IN THIS SECTION;
Vesicles : Size(mm): Percent: 20
Location: Filling: CLAY.MIN
GREEN CLAY ENCRUSTATION IN PCE 1;
Size(mm): Percent: 10
Location: Filling: CLAY.MIN
PCE 2, GREEN CLAYS ALSO;
Size(mm): Percent: <5
PCES 3-5;
Replacement: CLAY MINERALS
REPLACING MATRIX MINERALS;
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 645.50
Core: 69 Top of Core Depth (m) : 644.00
Sect: 1 Top of Section Depth(m): 644.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-6), 2 (10-13), 3 (17-19), 4 (22-25),
5 (27-39), 6 (42-50), 7 (53-55), 8 (59-61),
9 (63-66), 10 (69-72), 11 (75-80), 12 (82-88),
13 (91-95), 14 (97-105), 15 (108-111), 16 (114-119),
17 (122-130), 18 (133-136), 19 (138-142),
20 (144-150);
Texture : APHYRIC, FINE GRAINED, PCE 16 IS BRECCIATED GLASSY
FRAGMENTS SET IN A FRIABLE MATRIX WITH MORE COARSE
GRAINED AND VESICULAR FRAGMENTS INCLUDED IN THE
MATRIX AS IN PCE 17;
Alteration : EXT;
ALMOST COMPLETELY ALTERED
PCES 16 & 17;
Comments : ROCKS ARE DARK GREENISH GREY (5GY4/1) WITH
OCCASIONAL PCES AND PATCHES OF OLIVE GREY (5Y4/1)
ALTERATION, MATRIX IN PCE 16 IS GREENISH BLACK
(5G2/1) TO DARK YELLOWISH BROWN (10YR4/2);
Vesicles : Size(mm): <3 Percent:
Location: Filling:
Shape : SPHERICAL
PCES 1-5, PCES 6-15 SHOW SMALLER VESICLES WHICH
OCCASIONALLY OCCUR IN TRAINS SURROUNDED BY
DARKER FINER GRAINED MATRIX;
Leg : 60 Top/Bottom Interval(mm): 0/1400 Analyst: Sharaskin, A.
Hole: 459B Sample Midpoint (m) : 646.90
Core: 69 Top of Core Depth (m) : 644.00
Sect: 2 Top of Section Depth(m): 645.50
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 1 (4-16), 2 (19-23), 3A (25-32), 3B (33-36),
3C (37-42), 4 (45-48), 5 (52-56), 6 (59-63),
7 (65-69), 8 (72-75), 9 (77-90), 10 (92-96),
11 (98-105), 12 (106-108), 13 (112-115),
14 (117-119), 15 (122-130);
Texture : APHYRIC, MEDIUM GRAINED, PCES 1+9+11 ARE BASALTIC
MYLONITES, PCES 3A-C ARE BRECCIAS WITH ANGULAR AND
SUBANGULAR FRAGMENTS OF BASALTS CEMENTED BY VERY
FINE GRAINED GREENISH BLACK MATRIX, CEMENTATION IS
WEAK AND BRECCIAS CAN BE EASILY BROKEN INTO SEPARATE
PCES, ALL OTHER PCES ARE MORE MASSIVE, THEY ARE JUST
LARGE FRAGMENTS OF THE BRECCIA;
Structure : PCES 1+9+11 CONSIST OF SMALL SLICKENSIDED FRAGMENTS
OF ALTERED AND SHEARED GREENISH BLACK MYLONITIC
MATERIAL, PCES 3A-C WHEN BROKEN REVEAL SLICKENSIDED
SURFACES, PCES 10+15 HAVE THIN VEINS OF CARB AND
ZEOLITE(<1MM);
Alteration : EXT
PCES 2-3C, 7, 10;
ALMOST COMPLETELY ALTERED
PCES 1, 9, 11-14;
MOD
PCES 4-6, 8, 15;
Comments : BASALT IS DARK GREENISH GREY (5G4/1);
Vesicles : Size(mm): 0.3-2 Percent:
Size(mm): 5-8 Percent:
Location: Filling:
Shape : SPHERICAL
PCES 10+15;
Replacement: CARBONATE
ZEOLITE
Leg : 60 Top/Bottom Interval(mm): 0/ 970 Analyst: Sharaskin, A.
Hole: 459B Sample Midpoint (m) : 647.97
Core: 69 Top of Core Depth (m) : 644.00
Sect: 3 Top of Section Depth(m): 647.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-5), 2 (9-12), 3 (15-26), 4 (29-34),
5 (36-45), 6 (48-71), 7 (74-85), 8 (87-97);
Texture : APHYRIC, PCES 1+2+4+6+7 ARE MEDIUM GRAINED VESICULAR
BASALT SIMILAR TO ROCKS OF PREVIOUS SECTION, THESE
ROCKS ARE SEPARATED FROM ONE ANOTHER BY MYLONITIC
ZONES IN PCES 3+5+8 AND THE END OF 6;
Structure : SLICKENSIDES ARE OBSERVED ON BASALT PCES AND ON
MORE DENSE SMALL FRAGMENTS WITHIN THE MYLONITE MASS;
Alteration : EXT
PCES 1-2, 4, 6, 7;
ALMOST COMPLETELY ALTERED
PCES 3, 5, 8, 56-72CM;
Leg : 60 Top/Bottom Interval(mm): 0/1490 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 654.99
Core: 70 Top of Core Depth (m) : 653.50
Sect: 1 Top of Section Depth(m): 653.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-6), 2A (8-15), 2B (10-14), 3 (19-29),
4 (32-38), 5 (40-52), 6 (55-90), 7 (93-113),
8 (115-130), 9 (132-139), 10 (143-149);
Texture : APHYRIC, FINE GRAINED, GRAIN SIZE IN PCE 5 IS FINER
THAN IN PCES 1-4, PCE 6 IS A BROKEN FRAGMENT OF
BRECCIATED AND HIGHLY FRACTURED BASALT WHICH IS FINE
GRAINED AND APHYRIC AS THE BASALT HIGHER IN THE CORE
BUT IS MORE SEVERELY ALTERED;
Structure : PCE 6 IS HIGHLY FRACTURED WITH FRACTURE SURFACES
HAVING SLICKENSIDES ON THE LOWER PORTION OF THIS
INTERVAL, PCES 7-10 ARE HIGHLY FRACTURED AND SHEARED
WITH SLICKENSIDES PREVALENT;
Alteration : EXT
PCES 1-5;
ALMOST COMPLETELY ALTERED
PCES 6-10;
Comments : BASALT IN PCES 1-5 IS BLUISH GREY (5B5/1) WITH
DIFFUSE PATCHES OF MOD YELLOWISH BROWN (10YR5/4)
AND CONCENTRATION OF THE SAME COLOR ABOUT FRACTURES
IN THE ROCK, PCE 6 IS MUCH DARKER GREENISH BLACK
(5G2/1) WITH SOME PORTIONS BEING GREENER (5GY2/1);
THERE IS A SMALL AMOUNT OF GREENISH BLACK SEDIMENT
IN PCE 4 (5G2/1);
Vesicles : Size(mm): <1 Percent: 5-10
PCES 1-4;
Size(mm): <2 Percent:
PCE 5;
Leg : 60 Top/Bottom Interval(mm): 0/ 550 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 655.55
Core: 70 Top of Core Depth (m) : 653.50
Sect: 2 Top of Section Depth(m): 655.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-28), 2 (30-55);
Texture : APHYRIC, PCE 1 IS APHYRIC FINE GRAINED BASALT MADE
OF VERY FRIABLE MATERIAL, PCE 2 IS RUBBLE OF
BRECCIATED BASALT;
Structure : PCE 1 IS SHEARED AND SLICKENSIDES ARE ABUNDANT
THROUGHOUT THE SECTION, PCE 2 SHOWS FEWER
SLICKENSIDES AND LESS EVIDENCE OF SHEARING;
Alteration : ALMOST COMPLETELY ALTERED;
Comments : PCE 1 IS OLIVE BLACK (5Y2/1) TO GREENISH BLACK
(5GY2/1);
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 664.50
Core: 71 Top of Core Depth (m) : 663.00
Sect: 1 Top of Section Depth(m): 663.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (5-8), 2 (11-18), 3 (21-23), 4 (28-32),
5 (34-44), 6A (46-52), 6B (52-59), 6C (60-70),
6D (70-83), 7 (86-124), 8 (128-150);
Texture : APHYRIC, FINE GRAINED;
Structure : PCES 6-7 SHOW SHEARED AND SLICKENSIDED SURFACES
ALONG FRACTURES;
Alteration : EXT;
Comments : PCES 1-5 ARE DARK GREENISH GREY (5G4/1) WITH LARGE
PATCHES OF OLIVE GREY DISCOLORATION;
Vesicles : Size(mm): <1 Percent: 10
PCES 1-5, VESICLES ARE FILLED WITH GREEN OR BROWN
SECONDARY MINERALS WHICH ARE MOST LIKELY CLAYS,
VESICLES OCCUR IN TRAINS SURROUNDED BY DARKER
FINE GRAINED MATRIX, PCES 6-7 SHOW SIMILAR
VESICULATION;
Replacement: CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/1470 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 665.97
Core: 71 Top of Core Depth (m) : 663.00
Sect: 2 Top of Section Depth(m): 664.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-147);
Texture : APHYRIC, HIGHLY FRACTURED FRAGMENTS, NO APPRECIABLE
CHANGE IN GRAIN SIZE THROUGHOUT SECTION;
Structure : FRAGMENTS IN LOWER PORTION ARE CONSIDERABLY MORE
FRACTURED AND SHOW GREATER NUMBER OF SLICKENSIDED
SURFACES, VEIN FILLING IN THE FRAGMENTS OF THE UPPER
15CM IS GREENISH BLACK TO WHITE, DISCOLORATION
AROUND FRACTURED AREAS;
Alteration : EXT;
Comments : VEIN FILLING IS GREENISH BLACK (5G2/1), FRAGMENTS
ARE DARK GREENISH GREY (5GY4/1), COLOR OF THE
FRAGMENTS IS ESSENTIALLY UNIFORM THROUGHOUT THE
REMAINDER OF THE SECTION, A FEW REGIONS OF DARK
YELLOWISH BROWN (10YR4/2) AROUND FRACTURES AT 128CM,
PCES SO FRACTURED THEY WERE NOT REMOVED FROM LINER
AND NUMBERED;
Vesicles : Size(mm): <1 Percent:
VESICLES AND VESICLE TRAINS ALIGNED PERPENDICULAR
TO THE CORE;
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Fryer, P.
Hole: 459B Sample Midpoint (m) : 674.00
Core: 72 Top of Core Depth (m) : 672.50
Sect: 1 Top of Section Depth(m): 672.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-150);
Texture : APHYRIC, FINE GRAINED, END OF THE SECTION IS
BASALTIC BRECCIA WITH MYLONITIZED SECTIONS;
Structure : ROCKS ARE INTENSIVELY FRACTURED AND EASILY SPLIT
ALONG FRACTURES REVEALING SLICKENSIDED SURFACES,
CONTAINS IRREGULAR VEINS FILLED WITH GREENISH BLACK
CLAY AND CARB NEAR 74-85CM;
Alteration : EXT
45-120CM;
ALMOST COMPLETELY ALTERED
0-45CM, 120-150CM;
Comments : BASALT IS DARK GREENISH GREY TO GREENISH BLACK,
UPPER PORTION (3-50CM) AND LOWER (120-150CM) IS
LIGHT OLIVE GREY IN COLOR DUE TO THE PRESENCE OF
FE.HYDRX, A PATCH OF THIS COLOR IS ALSO FOUND NEAR
74-85CM, BASALTIC BRECCIA NEAR END OF SECTION IS
MYLONITIZED TO OLIVE GREY WITH BLUISH GREEN GREY
CEMENT;
Vesicles : Size(mm): <1 Percent: 20
Size(mm): 2-6 Percent:
RARE AND CONCENTRATED NEAR UPPER PART OF SECTION
FROM 5-45CM, SOME OF THEM ARE ENCRUSTED WITH
BLUISH GREEN GREY CLAY MINERAL WHILE OTHERS ARE
ABSOLUTELY EMPTY;
Replacement: CLAY MINERALS
CARBONATE
FERROUS HYDROX MINS
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Sharaskin, A.
Hole: 459B Sample Midpoint (m) : 683.50
Core: 73 Top of Core Depth (m) : 682.00
Sect: 1 Top of Section Depth(m): 682.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, SECTION COULD BE DIVIDED INTO THREE PARTS,
PART 1 IS FROM 0-74CM AND CONSISTS OF MEDIUM TO FINE
GRAINED BASALTS, GRAIN SIZE DECREASES DOWNWARD AND
ROCK BECOMES VERY FINE GRAINED BETWEEN 66-74CM, PART
2 IS FROM 74-94CM AND IS A ZONE WHICH WAS ORIGINALLY
A HYALOCLASTITE AND IS NOW BRECCIATED, ANGULAR
GLASSY TO FINE GRAINED BASALTS ARE SET IN A SHEARED
MASS PRODUCED AFTER DISINTEGRATED ROCK MATERIAL,
PART 3 IS FROM 94-150CM AND IS FINE GRAINED BASALT
WHICH IS HIGHLY ALTERED;
Structure : PART 1 IS SLIGHTLY FRACTURED, PART 2 IS HIGHLY
FRACTURED AND SHEARED, PART 3 IS HIGHLY FRACTURED;
Alteration : EXT;
ALMOST COMPLETELY ALTERED
74-150CM;
Comments : PART 1 IS DARK GREENISH GREY, PART 3 IS GREENISH
BLACK, THE NEXT SECTION IS A PROLONGATION OF THIS
ZONE;
Vesicles : Size(mm): <1 Percent: 15-20
PART 1;
Size(mm): <5 Percent:
Location: Filling:
Shape : ROUND
LOWER HALF OF PART 1, PARTS 2-3 ARE ALSO
VESICULAR;
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Sharaskin, A.
Hole: 459B Sample Midpoint (m) : 685.00
Core: 73 Top of Core Depth (m) : 682.00
Sect: 2 Top of Section Depth(m): 683.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, SECTION IS A CONTINUOUS PROLONGATION OF
SECTION 73-1, FINE GRAINED BASALTS SIMILAR TO PART 3
OF THE PREVIOUS SECTION, ROCKS IN THIS SECTION ARE
A LITTLE MORE COARSE GRAINED BUT STILL IN THE FINE
GRAINED CATEGORY;
Structure : BASALTS ARE HIGHLY FRACTURED;
Alteration : ALMOST COMPLETELY ALTERED
ALTERATION SAME AS ZONE 3 OF CORE 73-1;
OLIVE GREY ZONE OF ALTERATION FROM 128-137CM;
Vesicles : TRAINS OF SUBPARALLEL IRREGULAR VESICLES APPEAR
WITHIN THE INTERVAL 90-110CM;
Leg : 60 Top/Bottom Interval(mm): 0/1380 Analyst: Sharaskin, A.
Hole: 459B Sample Midpoint (m) : 686.38
Core: 73 Top of Core Depth (m) : 682.00
Sect: 3 Top of Section Depth(m): 685.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, SECTION IS A CONTINUOUS PROLONGATION OF
SECTION 73-2, FINE TO MEDIUM GRAINED BASALTS, MORE
MASSIVE THAN IN PREVIOUS SECTIONS;
Structure : WELL DEVELOPED SYSTEM OF FRACTURES, ONE DIRECTION
MAKES AN ANGLE OF 75 DEGREES TO THE LEFT EDGE OF THE
LINER AND THE OTHER 150 DEGREES--THE ANGLE BETWEEN
THE TWO DIRECTIONS IS 75-80 DEGREES;
Alteration : ALMOST COMPLETELY ALTERED
ALTERATION SAME AS CORE 73-2;
Comments : ZONE OF OLIVE GREY COLOR WHICH PROBABLY CONTAINS
FE.HYDRX FROM 110-117CM, BASALT IS GREENISH GREY TO
GREENISH BLACK;
Vesicles : Size(mm): 0.5-3 Percent: 5
MORE ABUNDANT BELOW 60CM AND IN THE PCES BETWEEN
75-110CM, ORIENTED PARALLEL TO THE FIRST DIRECTION
OF THE FRACTURES, LOWERMOST PART CONTAINS SEPARATE
PCES OF THESE ROCKS WITH TOTALLY DIFFERENT
ORIENTATION OF VESICLE TRAINS;
Replacement: FERROUS HYDROX MINS
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