Leg : 82 Top/Bottom Interval(mm): 0/1430 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 195.43
Core: H 4 Top of Core Depth (m) : 192.50
Sect: 2 Top of Section Depth(m): 194.00
LITHOLOGY: SEDIMENT;
Piece No. : (0-143);
Leg : 82 Top/Bottom Interval(mm): 1430/1500 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 195.50
Core: H 4 Top of Core Depth (m) : 192.50
Sect: 2 Top of Section Depth(m): 195.43
LITHOLOGY: APHYRIC BASALT;
Piece No. : (143-150);
Texture : APHYRIC, CHALK AND CLEAR CALCITE CEMENTED BRECCIA,
MINOR FRESH GLASS AT CENTER, TWO CLASTS, GLASS
FRAGMENT WEATHERED TO DARK BROWN PALAGONITE;
Alteration : MOD
TWO CLASTS ARE MOD ALTERED BUT SOME FRESH GLASS AT
CENTRE;
Comments : LIMESTONE PRESENT WITHIN FRACTURES;
Replacement: PALAGONITE
Minerals Replaced: GLASS
Leg : 82 Top/Bottom Interval(mm): 0/ 320 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 195.82
Core: H 4 Top of Core Depth (m) : 192.50
Sect: CC Top of Section Depth(m): 195.60
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (0-10), 2 (10-15), 3 (17-32);
Texture : APHYRIC, BASALT BRECCIA, FINE-GRAINED PLAG AND OL,
SOME OF THE BASALT PCES SHOW A VITRIC RIM WHICH IS
MOSTLY ALTERED(IN PCE(2) GLASS LOOKS FRESH), THE
BRECCIA IS INDURATED BY A CALCITE CEMENT WHICH FILLS
UP NEARLY ALL THE SPACE BETWEEN THE BASALT PCES;
Structure : THE CEMENT SOMETIMES SHOWS DRUSY CAVITIES;
Alteration : MOD;
Comments : MEDIUM GREY(7.5YRN5);
Vesicles : VESICLES ARE VERY RARE AND NOT FILLED;
Groundmass : OLIVINE
Size(mm): TO 2
OL IS FINE-GRAINED AND COMPLETELY REPLACED BY
SMEC;
PLAGIOCLASE
Size(mm): 0.5
Replacement: SMECTITE
Minerals Replaced: OL
CALCITE
CALCITE IS IN FORM OF A CEMENT;
Leg : 82 Top/Bottom Interval(mm): 0/1490 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 462.99
Core: 2 Top of Core Depth (m) : 461.50
Sect: 1 Top of Section Depth(m): 461.50
LITHOLOGY: APHYRIC TO SPARSELY PHYRIC BASALT;
BASALT BRECCIA;
Piece No. : PCES 1 (1-5), 2 (7-17), 3A (19-25), 3B (24-27),
3C (26-32), 4A (35-43), 4B (43-57), 4C (57-65),
4D (65-73), 4E (74-83), 4F (83-88), 4G (48-95),
4H (95-104), 5 (106-109), 6A (111-118),
6B (119-130), 7 (130-143), 8 (144-149);
Texture : APHYRIC TO SPARSELY PHYRIC, SOME UNALTERED GLASS IN
CENTRES OF LARGER PIECES, BASALT BRECCIA-INDURATED
CALCAREOUS CHALK MATRIX WITH ABOUT 5% DRUSY CALCITE,
FINE-GRAINED, CLASTS, DARK BROWN ALTERED GLASS
FRAGMENTS AND OCCASIONAL GLASS RIMS;
Alteration : MOD
LIGHT BROWN(7.5YR6/2) PINKISH GREY WEATHERED
MARGINS TO 1CM THICK ON SOME CLASTS;
Comments : MEDIUM GREY(7.5YRN5);
LARGE BASALT CLASTS ARE SEPARATED BY CO3 MATRIX
WHICH CONTAINS MUCH SMALLER CLASTS OF BASALT AND
ALTERED GLASS, SIZE DEFINITELY HEMODAL OR TURMODAL
IN DISTRIBUTION, GLASS CLASTS ARE SMALL AND
SURROUNDED BY A DARK RIM OF ALTERATION, BASALT
CLASTS(SMALL AND MEDIUM) HAVE WHITE ALTERATION RIM
WHILE MOST OF THE LARGEST CLASTS LACK THIS RIM,
BASALT FRAGMENTATION APPEARS TO HAVE TAKEN PLACE IN
3 STEPS: (1) LARGE CLASTS DEPOSITED IN CO3 MUD BY
DOWN-SLOPE MOVEMENT, (2) BREAKING UP AND FILLING OF
LARGE CLASTS WITH CONTEMPORANEOUS OR
PENECONTEMPORANEOUS CO3 OOZE AND (3) BREAKING UP AND
SETTLING OF SMALLER CLASTS(MED AND SMALL) INTO CO3
OOZE, CO3 OOZE FORMS MATRIX FOR BASALT CLASTS-
PINKISH-WHITE;
Phenocrysts: OLIVINE ( 0-2%)
Size(mm): TO 1
DARK BROWN(7.5YR4/4) ALTERED(?) OL TO 1MM
VARYING 0-2% AND RARELY TO 5%;
Replacement: CALCITE
DRUSY CALCITE IN BASAL BRECCIA MATRIX;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 464.50
Core: 2 Top of Core Depth (m) : 461.50
Sect: 2 Top of Section Depth(m): 463.00
LITHOLOGY: BASALT BRECCIA;
Piece No. : PCES 1 (0-10), 2A (11-22), 2B (23-32), 2C (33-40),
2D (41-47), 2E (45-51), 3 (53-63), 4 (65-76),
5 (75-85), 6 (86-94), 7A (95-108), 7B (108-113),
8A (115-124), 8B (122-129), 9A (130-139),
9B (139-140);
Texture : SPARSELY PLAG PHYRIC BASALT AT(65-70, 75-85, 130-
150), EQUANT PLAG PHENOS TO 5MM INCREASING DOWNHOLE
TO APPROXIMATELY 3%, PCE(7) HAS STRONG DEVELOPMENT
OF DARK GREEN-GREYISH GREEN(5G4/2) (?)PUMPELLYITE
IN GLASS FRAGMENTS AND GLASS RIM, PCE(7B) HAS
FRESH GLASS FRAGMENTS AT 110CM, BRECCIATED BASALT;
Structure : GLASS FRAGMENTS AT 95-115CM;
Alteration : MOD
FRESH GLASS FRAGMENTS AT 110CM;
Comments : CHALK MATRIX STAINED PINK, BASALT BRECCIA AS IN 2-1,
PUMPELLYITE(?) IS DARK GREEN TO GREYISH-GREEN(5G4/2)
THE BASALT AT THE BASE OF THIS SECTION IS A VERY
LARGE CLAST, IT APPEARS TO BE THE BEGINNING OF A
SUBMARINE SLIDE CYCLE GOING UP INTO THE TOP OF THE
SECTION, MANY VEINS AND VEINLETS;
Phenocrysts: PLAGIOCLASE ( TO 3%)
SPARSELY PLAG PHYRIC BASALT AT(65-70, 75-85, 130-
150), EQUANT PLAG PHENOS TO 5MM DOWNHOLE TO
APPROXIMATELY 3%;
Replacement: PUMPELLYITE
ID PUMPELLYITE QUESTIONABLE IN GLASS FRAGMENTS;
Leg : 82 Top/Bottom Interval(mm): 0/1440 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 465.94
Core: 2 Top of Core Depth (m) : 461.50
Sect: 3 Top of Section Depth(m): 464.50
LITHOLOGY: BASALT BRECCIA;
SIMILAR TO 2-1 AND 2-2;
Piece No. : PCES 1A (0-11), 1B (11-15), 2 (17-21), 3A (21-33),
3B (32-37), 4 (41-46), 5 (47-53), 6 (55-59),
7 (63-69), 8 (73-77), 9 (79-83), 10 (85-89),
11 (92-97), 12A (101-112), 12B (112-117),
13 (120-124), 14 (126-130), 15 (132-135),
16 (136-144);
Texture : BASALT BRECCIA WITH BASALT AND GLASS CLASTS AS IN
2-1 BECOMING MOD PLAG PHYRIC DOWNHOLE, 55-57CM HAS
FRESH GLASS FRAGMENTS;
Structure : DRUSY CALCITE VEIN AT 0-5CM;
Alteration : MOD
FRESH GLASS FRAGMENTS AT 55-57CM;
Comments : TOP HALF OF A CYCLE SIMILAR TO THAT IN SECTION(1,2),
SAME CO3 CLASTS IN THE CO3 SECTION, SIMILAR TO 2-1
AND 2-2;
Phenocrysts: PLAGIOCLASE
MOD PLAG PHYRIC DOWNCORE;
Replacement: CALCITE
DRUSY;
Leg : 82 Top/Bottom Interval(mm): 0/1410 Analyst: Weaver, B.
Hole: 556 Sample Midpoint (m) : 467.41
Core: 2 Top of Core Depth (m) : 461.50
Sect: 4 Top of Section Depth(m): 466.00
LITHOLOGY: BASALT BRECCIA;
Piece No. : PCES 1 (1-9), 2A (11-21), 2B (20-25), 3 (26-34),
4A (36-44), 4B (45-53), 4C (54-60), 5 (62-64),
6 (65-73), 7 (75-79), 8 (84-87), 9A (87-90),
9B (91-100), 10A (102-109), 10B (110-115),
11 (117-123), 12 (124-140);
Texture : CLASTS ARE SPARSELY TO MODERATELY PLAGIOCLASE
PHYRIC, ALTERED GLASS AS IN 2-1 TO 2-3 BECOMING
LARGER WITH LARGER FRESH CENTERS, FRESH GLASS AT
45CM, BASALT BRECCIA;
Structure : DRUSY CALCITE VEINS AT 130CM;
Alteration : MOD
ALTERED GLASS BECOMING LARGER WITH LARGER FRESH
CENTERS;
Comments : PART OF THE CYCLE OF SUBMARINE SLIDE DEPOSIT THAT
CONTINUES INTO SECTION 3, PCE(12) HAS VUG FILLED
WITH CALCITE VEINS AND XSTLS, HETEROGENEOUS SIZES
AND VERY ROUNDED BOULDERS, PCE(9B) SUGGESTS
REDEPOSITION RATHER THAN BREAKING UP IN SITU, FEW
REWORKED CHALK FRAGMENTS, MATRIX SIMILAR TO 2-1 AND
2-3;
Phenocrysts: PLAGIOCLASE
SPARSELY TO MOD PHYRIC BASALT AS IN 2-2 TO 2-3;
Replacement: CALCITE
DRUSY IN VEINS;
Leg : 82 Top/Bottom Interval(mm): 0/ 700 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 468.20
Core: 2 Top of Core Depth (m) : 461.50
Sect: 5 Top of Section Depth(m): 467.50
LITHOLOGY: BASALT BRECCIA;
Piece No. : PCES 1A (0-15), 1B (17-25), 1C (24-29), 2 (31-40),
3 (40-47), 4 (47-57), 5 (59-61), 6 (64-70);
Texture : BRECCIA, LARGE CLASTS, MOD PLAG PHYRIC BASALT AS IN
2-2 TO 2-4, WEATHERED GLASS WITH FRESH CORES AS IN
2-1 TO 2-4, FRESH GLASS AT 32CM;
Structure : SMALL ANGULAR FRAGMENTS OF WEATHERED GLASS;
Alteration : FRESH TO MOD
CLASTS ARE FRESH TO MOD WEATHERED, ANGULAR
FRAGMENTS OF WEATHERED GLASS WITH FRESH CORES
SIMILAR TO 2-1 TO 2-4;
Comments : CHALK MATRIX;
Phenocrysts: PLAGIOCLASE
MOD PLAG PHYRIC SIMILAR TO 2-2 AND 2-4;
Leg : 82 Top/Bottom Interval(mm): 700/1380 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 468.88
Core: 2 Top of Core Depth (m) : 461.50
Sect: 5 Top of Section Depth(m): 468.20
LITHOLOGY: POLYMICT BASALT BRECCIA;
Piece No. : PCES 7 (70-77), 8 (78-85), 9 (85-87), 10 (90-95),
11 (95-100), 12A (102-107), 12B (106-112),
13 (113-117), 14 (117-121), 15 (124-131),
16 (132-137);
Texture : CALCITE CEMENTED POLYMICT BRECCIA, BASALT CLASTS AS
ABOVE BUT MORE WEATHERED AND MORE ROUNDED, FEW WELL
ROUNDED REWORKED CHALK CLASTS ABUNDANT IN PARTS,
PROBABLE START OF BASALT PILLOWS AT ABOUT 130CM;
Alteration : MOD
BASALT CLASTS ARE GENERALLY WEATHERED;
Comments : PINKISH GREY(7.5YR6/2) AND BROWN, AT TOP OF SECTION
5 THE CORE SEGMENTS IN 2-5(1A-C) FORM THE BASE OF
THE DOWNSLOPE EVENT RECORDED IN SECTIONS 3 & 4, FROM
2-5-2 TO 2-5-12 THE MATRIX IS LIGHT GREY RATHER THAN
PINKISH, NUMBER OF GLASS CLASTS HAVE ROUNDED EDGES,
CO3 CLASTS ARE INCORPORATED IN THE CO3 MATRIX, THE
LARGE BASALT CLASTS IN 2-5-14 TO 2-5-16 FORM BASE OF
THIS "CYCLE"(UP THRU 2-5-2);
Vesicles : NUMEROUS DRUSY VUG LININGS IN CALCITE CEMENT;
Replacement: CALCITE
CALCITE CEMENTED POLYMICT BRECCIA IS WHITE, FINELY
CRYSTALLINE CALCITE WITH NUMEROUS DRUSY VUG
LININGS;
Leg : 82 Top/Bottom Interval(mm): 0/ 400 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 469.40
Core: 2 Top of Core Depth (m) : 461.50
Sect: 6 Top of Section Depth(m): 469.00
LITHOLOGY: PLAG-MOD PHYRIC BASALT;
SIMILAR TO 2-2 TO 2-5;
Piece No. : PCES 1 (0-10), 2 (14-18), 3 (22-24), 4 (27-40);
Texture : MOD PHYRIC;
Structure : AT 35CM THERE IS A CLEAR DRUSY CALCITE VEIN;
Alteration : MOD
Comments : NO MATRIX PRESENT, PROBABLY FIRST FLOW MATERIAL,
LARGE BASALT CLAST(?) FORMS ENTIRE CORE-COULD BE
BASE OF CYCLE IN 556-2-5;
Phenocrysts: PLAGIOCLASE
MOD PHYRIC SIMILAR TO 2-2 TO 2-5;
Replacement: CALCITE
2MM CLEAR DRUSY CALCITE VEIN AT 35CM;
Leg : 82 Top/Bottom Interval(mm): 0/ 50 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 471.05
Core: 3 Top of Core Depth (m) : 471.00
Sect: 1 Top of Section Depth(m): 471.00
LITHOLOGY: LIMESTONE BASALT BRECCIA;
SEE DESCRIPTION OF CORE 2;
Piece No. : PCES 1 (0-5);
Leg : 82 Top/Bottom Interval(mm): 50/1500 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 472.50
Core: 3 Top of Core Depth (m) : 471.00
Sect: 1 Top of Section Depth(m): 471.05
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCES 2 (9-13), 3 (15-19), 4 (21-24), 5A (27-30),
5B (26-28), 6 (31-48), 7 (51-74), 8A (74-84),
8B (82-96), 8C (94-102), 8D (100-104), 9A (106-108),
9B (107-111), 10 (115-130), 11A (132-137),
11B (138-142), 11C (147-150);
Texture : MOD PHYRIC, FINE-GRAINED, EQUANT PLAG PHENOS, AT
138CM THERE IS A 1CM THICK GLASS BAND(WEDGE SHAPED)
AND ABOUT 50% IS WEATHERED TO DARK BROWN(7.5YR3/2);
Structure : MINOR CALCITE VEINS ARE PRESENT;
Alteration : MOD
MINOR OL WEATHERED;
Comments : DARK GREY(2.5YRN4) BASALT AND MINOR OL IS DARK
GREYISH BROWN(2.5Y4/2);
Phenocrysts: PLAGIOCLASE ( 5%)
Size(mm): TO 5
PLAG PHENOS ARE EQUANT;
OLIVINE
OL PHENOS ARE MINOR AND WEATHERED;
Replacement: CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1470 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 473.97
Core: 3 Top of Core Depth (m) : 471.00
Sect: 2 Top of Section Depth(m): 472.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (1-12), 2 (17-25), 3A (28-34), 3B (28-34),
4A (36-45), 4B (45-55), 5 (56-58), 6A (58-68),
6B (67-73), 7 (69-77), 8 (80-83), 9 (85-93),
10 (89-98), 11A (99-105), 11B (101-106),
12 (108-113), 13 (114-116), 14 (126-130),
15 (133-137);
Texture : MOD PHYRIC, AT 61CM AND 115CM THERE ARE INTERVALS OF
FRESH GLASS;
Structure : CALCITE VEINS(1-2MM WIDE) ARE COMMON, FRESH GLASS AT
61CM AND 115CM ARE HEAVILY VEINED BY CARB;
Alteration : MOD
SLIGHTLY MORE WEATHERED THAN PREVIOUS SECTION;
Comments : SAME AS SECTION 1 JUST SLIGHTLY MORE WEATHERED;
Vesicles : Size(mm): 1 Percent:
Location: Filling: CLAY
Shape : ROUND
AMYGDULES FILLED WITH DARK CLAY MINERALS;
Phenocrysts: PLAGIOCLASE
Replacement: CARBONATE
CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/ 730 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 474.73
Core: 3 Top of Core Depth (m) : 471.00
Sect: 3 Top of Section Depth(m): 474.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (0-7), 2 (9-17), 3A (17-27), 3B (27-33),
4 (28-40), 5 (41-50), 6 (52-58), 7 (60-73);
Texture : MOD PHYRIC, PRISMATIC PHENOS;
Structure : COMMON CALCITE VEINS;
Alteration : MOD;
Comments : MEDIUM GREY(2.5YN5), SIMILAR TO SECTIONS 1-2;
Phenocrysts: PLAGIOCLASE
Size(mm): 2 TO
PLAG PHENOS ARE PRISMATIC;
Leg : 82 Top/Bottom Interval(mm): 0/1470 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 481.47
Core: 4 Top of Core Depth (m) : 480.00
Sect: 1 Top of Section Depth(m): 480.00
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCES 1 (2-11), 2 (14-28), 3 (30-35), 4A (46-53),
4B (53-62), 4C (61-71), 4D (70-78), 5A (82-97),
5B (93-106), 5C (104-121), 5D (120-133),
5E (132-137), 5F (137-147);
Texture : THE FIRST 0-10CM ARE A FINE-GRAINED PHYRIC BASALT
BRECCIA, THE REST OF THE CORE IS A FINE-GRAINED
PHYRIC BASALT, AT 79-84CM THERE ARE VITRIC RIMS
POSSIBLY SEPARATING TWO PILLOWS(?);
Structure : GEOPETAL STRUCTURES ARE COMMON, INFILLING THE
FRACTURES IS PALE YELLOW(5Y7/3) NANNOFOSSIL CHALK;
Alteration : EXTENSIVE
PCE(1);
FRESH
PCES(2,3,5A-85CM TO END OF CORE);
MOD
PCES(4A-85CM);
Comments : DARK GREY(7.5YRN4), COMMON GEOPETAL STRUCTURES SHOW
THAT THE SEDIMENT HAS FILTERED INTO THE BASALT AFTER
ITS EMPLACEMENT, IN SOME PLACES THIS SEDIMENT HAS
BEEN COMPLETELY RECRYSTALLIZED TO CALCITE;
Phenocrysts: PLAGIOCLASE ( 5-10%)
Size(mm): 4 TO <10
PLAG PHENOS IN PCE(1) ARE 4MM WHILE IN REST OF
CORE THEY ARE <10MM AND VERY COMMON-5-10% AND
OFTEN READSORBED;
OLIVINE ( 1%)
OL IS MOSTLY ALTERED TO SMEC;
Replacement: CALCITE
IN PCE(1) FINER MATRIX IS CEMENTED BY CALCITE,
SOME PLACES THE SEDIMENT HAS BEEN COMPLETELY
RECRYSTALLIZED TO CALCITE;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 483.00
Core: 4 Top of Core Depth (m) : 480.00
Sect: 2 Top of Section Depth(m): 481.50
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCES 1A (1-10), 1B (10-30), 1C (30-35), 1D (35-37),
1E (38-45), 1F (46-49), 2A (51-60), 2B (67-84),
2C (84-97), 2D (98-103), 3A (105-106), 3B (107-122),
3C (123-138), 4 (140-150);
Texture : FINE TO MEDIUM GRAINED, PHYRIC, VITRIC RIMS
OCCURRING BETWEEN DIFFERENT PILLOWS(33-54CM AND 101-
108CM);
Structure : FRACTURES THAT OCCUR AT 33-54CM AND 101-108CM ARE
FILLED WITH PALE YELLOW NANNOFOSSIL CHALK;
Alteration : MOD TO FRESH
CLOSE TO GLASS-33-54CM AND 101-108CM THE BASALT IS
MOD ALTERED;
Comments : DARK GREY(7.5YRN4/0);
Vesicles :
Location: Filling: SMECTITE,CALCITE
VESICLES ARE EITHER FILLED WITH SMEC OR CALCITE;
Phenocrysts: PLAGIOCLASE ( 5-10%)
Size(mm): <10 TO 15
OLIVINE
Size(mm): 2-3
FRESH OL IS RARE-OL IS USUALLY ALTERED TO SMEC;
Replacement: SMECTITE
Minerals Replaced: OL
CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Brannon, J.
Hole: 556 Sample Midpoint (m) : 484.50
Core: 4 Top of Core Depth (m) : 480.00
Sect: 3 Top of Section Depth(m): 483.00
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCES 1A (1-17), 1B (18-24), 1C (24-26), 1D (26-39),
1E (40-52) 1F (53-72), 1G (70-82) 1H (78-82),
1I (82-92), 1J (92-103), 1K (100-106), 1L (115-133),
1M (134-139), 1N (140-150);
Texture : PLAG PHYRIC, 110-150CM IS FINE-GRAINED AND HAS PLAG
PHENOS PARTIALLY RESORBED, THE UPPER PORTION OF THE
110-150CM INTERVAL HAS GLASS RIM;
Structure : FRACTURES;
Alteration : FRESH
AT 128-137CM THERE IS AN ALTERATION ZONE AND
108-122CM IS MOD ALTERED;
Comments : 110-150CM IS GREY(2.5YN5), 0-110CM IS SAME UNIT AS
SECTION 2, 51-56CM HAS SEDIMENT-DENDRITIC PATTERN
PENETRATING THE BASALT FROM A FRACTURE;
Vesicles : Size(mm): Percent: 2-4
Location: Filling: CHLORITE
120-134CM HAS CHLORITE(?) FILLED AMYGDULES;
Phenocrysts: PLAGIOCLASE ( <5%)
PLAG PHENOS IN 110-150CM ARE ROUNDED AND PARTIALLY
RESORBED AND <5% CONCENTRATION, BETWEEN 120-134CM
THERE ARE FEWER PHENOS;
Replacement: CHLORITE
ID CHLORITE UNCERTAIN;
Leg : 82 Top/Bottom Interval(mm): 0/ 220 Analyst: Cande, S.
Hole: 556 Sample Midpoint (m) : 484.72
Core: 4 Top of Core Depth (m) : 480.00
Sect: 4 Top of Section Depth(m): 484.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (1-16), 1B (16-22);
Texture : APHYRIC, FINE TO MEDIUM-GRAINED, VITRIC RIM AT THE
BOTTOM;
Structure : FRACTURES FILLED WITH CARBONATE;
Alteration : FRESH TO MOD
MOD ALTERED 8-22CM;
Comments : MEDIUM-GREY(2.5YRN5/0);
Replacement: CARBONATE
Leg : 82 Top/Bottom Interval(mm): 220/1400 Analyst: Cande, S.
Hole: 556 Sample Midpoint (m) : 485.90
Core: 4 Top of Core Depth (m) : 480.00
Sect: 4 Top of Section Depth(m): 484.72
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCES 2A (22-45), 2B (45-50), 2C (50-56), 2D (54-71),
2E (72-86), 2F (86-91), 2G (91-101), 2H (101-112),
2I (112-126), 2J (126-140);
Texture : PHYRIC BASALT, MEDIUM-GRAINED, VITRIC RIMS AT TOP &
BOTTOM WITH MOD ALTERED ROWS BESIDE THEM, 110-113CM
IS PLAG-GLOMEROPHYRIC AND VITROPHYRIC TO TACHYLYTIC
BASALT, GLASS OF GRNDMSS IS MOSTLY DEVITRIFIED(55%);
Structure : 112CM FRACTURES FILLED WITH SMEC AND CARB AND SOME
FRACTURES WITH CARB;
Alteration : FRESH TO MOD
MOD ALTERED AT 22-31CM AND 102-115CM-ROWS BESIDE
VITRIC RIMS;
Comments : DARK GREY(2.5YRN4/0);
Phenocrysts: PLAGIOCLASE ( 5-15%)
Size(mm): <10
% OF PLAG PHENOS INCREASES FROM TOP TO BOTTOM,
PLAG-GLOMEROPHYRIC(3-5%);
Groundmass : PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 2%)
GLASS
GLASS OF GNDMASS IS MOSTLY DEVITRIFIED AND SHOWS
DOTS OF ORE MINERALS(MAGNETITE);
MAGNETITE
DOTS OF ORE MINERALS IN GNDMASS COULD BE
MAGNETITE(%);
Replacement: SMECTITE
CARBONATE
Leg : 82 Top/Bottom Interval(mm): 0/1480 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 487.48
Core: 4 Top of Core Depth (m) : 480.00
Sect: 5 Top of Section Depth(m): 486.00
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCES 1 (0-16), 2A (16-27), 2B (25-40), 2C (40-50),
3A (52-70), 3B (69-80), 3C (74-96), 3D (95-104),
3E (102-118), 3F (119-125), 3G (125-132),
3H (129-132), 3I (132-147);
Texture : PHYRIC, MEDIUM-GRAINED, VITRIC BOTTOM OF UPPER AND
VITRIC TOP OF LOWER UNIT AT 130-135CM;
Structure : FRACTURES PARTLY FILLED WITH CARB;
Alteration : FRESH TO MOD
0-5CM AND 115-142CM ARE MOD ALTERED;
Comments : DARK GREY(2.5YRN4/0);
Vesicles : VESICLES PARTLY ROUND AND IRREGULAR SHAPED;
Phenocrysts: PLAGIOCLASE ( 5-10%)
Size(mm): <15
Replacement: CARBONATE
Leg : 82 Top/Bottom Interval(mm): 0/ 420 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 487.92
Core: 4 Top of Core Depth (m) : 480.00
Sect: 6 Top of Section Depth(m): 487.50
LITHOLOGY: PLAG PHYRIC BASALT;
SAME AS BOTTOM OF SEC 5;
Piece No. : PCES 1A (1-9), 1B (9-22), 1C (21-33), 1D (31-42);
Texture : VITRIC RIM AT BOTTOM;
Leg : 82 Top/Bottom Interval(mm): 420/1500 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 489.00
Core: 4 Top of Core Depth (m) : 480.00
Sect: 6 Top of Section Depth(m): 487.92
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCES 1E (43-55), 2A (55-60), 2B (60-66), 2C (66-76),
2D (75-82), 2E (82-95), 2F (95-101), 2G (101-115),
2H (116-122), 3A (123-131), 3B (128-147),
3C (147-150);
Texture : PLAG PHYRIC, FINE-GRAINED, VITRIC RIMS AT TOP AND
BOTTOM, (82-122CM) HAVE VITRIC RIMS;
Structure : FRACTURES ARE FILLED WITH CARBONATE;
Alteration : FRESH TO MODERATE
(39-50CM, 76-90CM, 115-129CM) ARE MOD ALTERED AND
THE REST IS FRESH;
Comments : GREY(2.5YN5/0);
Phenocrysts: PLAGIOCLASE ( 5-10%)
Size(mm): <14
Replacement: CARBONATE
Leg : 82 Top/Bottom Interval(mm): 0/ 200 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 489.20
Core: 4 Top of Core Depth (m) : 480.00
Sect: 7 Top of Section Depth(m): 489.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
SIMILAR TO CORE 4-6;
Piece No. : PCES 1A (0-8), 1B (8-20);
Texture : MOD PLAG PHYRIC;
Leg : 82 Top/Bottom Interval(mm): 0/1430 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 490.43
Core: 5 Top of Core Depth (m) : 489.00
Sect: 1 Top of Section Depth(m): 489.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (0-12), 2 (12-22), 3A (22-47), 3B (49-66),
3C (65-85), 4A (85-106), 4B (105-118), 5 (120-142);
Texture : MOD PLAG PHYRIC, AT THE TOP OF PCES(3,5) OCCUR
MULTIPLE VITRIC COOLING RIMS, (0-23CM) IS LOWER PART
OF PILLOW AND (23-118CM) IS SEPARATE PILLOW AND
(118-143CM) IS UPPER PART OF PILLOW;
Structure : CALCITIC AND CLAYEY FRACTURE FILLINGS ARE COMMON;
Alteration : FRESH TO MOD
15-35CM AND 115-125CM ARE MOD ALTERED WHILE THE
REST IS FRESH;
Comments : MEDIUM GREY(7.5YRN5/0);
Vesicles :
Location: Filling: SMECTITE, CLAY
ROUND AMYGDULES FILLED WITH SMECTITE, AT 55CM
OCCUR SOME PATCHY VESICLES FILLED WITH SMEC(?) AND
CLAY MINERALS;
Phenocrysts: PLAGIOCLASE ( 5%)
Size(mm): 5-8
APPROXIMATELY 5%, PLAG MOSTLY ANHEDRAL(RESORBED);
Replacement: SMECTITE
ID OF SMEC IN VESICLES UNCERTAIN;
CLAY
Leg : 82 Top/Bottom Interval(mm): 0/1440 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 491.94
Core: 5 Top of Core Depth (m) : 489.00
Sect: 2 Top of Section Depth(m): 490.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
SIMILAR TO 5-1;
Piece No. : PCES 1A (1-11), 1B (11-32), 1C (33-40), 1D (53-74),
1E (75-80), 2 (82-87), 3 (0-99), 4 (100-112),
5 (112-124), 6 (125-144);
Texture : MOD PLAG PHYRIC, 83-87CM FRESH GLASS AND CARB;
Structure : MINOR CARB VEINS HATCHED;
Alteration : MOD TO FRESH
PCES(1A,1B,1E,3-6) ARE MOD ALTERED WHILE REST OF
CORE IS FRESH;
Comments : GREY(7.5YRN5);
Vesicles : Size(mm): Percent: <5
Location: Filling:
Shape : ROUNDED
<5% ROUNDED VESICLES FILLED WITH MOD GREEN(5G5/6)
(?) CLAYS &/OR WHITE CALCITE;
Phenocrysts: PLAGIOCLASE
Replacement: CALCITE
WHITE CALCITE IN VEINS;
CARBONATE
CLAY
MOD GREEN(?) CLAY;
Leg : 82 Top/Bottom Interval(mm): 0/1460 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 493.46
Core: 5 Top of Core Depth (m) : 489.00
Sect: 3 Top of Section Depth(m): 492.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
SIMILAR TO 5-1 AND 5-2;
Piece No. : PCES 1 (2-12), 2A (12-24), 2B (20-28), 2C (30-32),
2D (32-42), 2E (41-47), 2F (49-58), 3 (61-65),
4 (66-80), 5 (81-90), 6A (90-97), 6B (92-101),
7A (104-112), 7B (112-122), 7C (116-125),
7D (125-130), 8A (132-140), 8B (140-146);
Texture : MOD PLAG PHYRIC BASALT;
Structure : MINOR CARB VEINS HATCHED, (82-90CM) HAS CALCITE
VEINS WITHIN THE TOP OF THE SAMPLE;
Alteration : FRESH TO MOD
GRADATIONAL ALTERATION;
Comments : GREY(7.5YRN5 GRADING TO 2.5YRN5);
Vesicles : (82-90CM) HAS IRREGULAR VESICLES FILLED WITH DARK
GREENISH CLAYS;
Phenocrysts: PLAGIOCLASE
Replacement: CALCITE
CARBONATE
CLAY
DARK GREENISH CLAYS;
Leg : 82 Top/Bottom Interval(mm): 0/1460 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 494.96
Core: 5 Top of Core Depth (m) : 489.00
Sect: 4 Top of Section Depth(m): 493.50
LITHOLOGY: PLAG SPARSELY TO MOD PHYRIC BASALT;
SIMILAR TO 5-1 AND 5-3;
Piece No. : PCES 1A (1-8), 1B (9-15), 2 (17-20), 3A (21-40),
3B (40-46), 3C (55-60), 3D (60-73), 4A (73-81),
4B (80-88), 4C (88-117), 4D (117-146);
Texture : SPARSELY TO MOD PLAG PHYRIC;
Comments : PHENOCRYST ABUNDANCE GRADUALLY DECREASING DOWNHOLE;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 496.50
Core: 5 Top of Core Depth (m) : 489.00
Sect: 5 Top of Section Depth(m): 495.00
LITHOLOGY: PLAG SPARSELY TO MOD PHYRIC BASALT;
SIMILAR TO 5-1 AND 5-4;
Piece No. : PCES 1A (1-8), 1B (9-15), 1C (26-35), 1D (35-45),
2A (45-53), 2B (53-60), 2C (61-67), 2D (67-79),
2E (80-92), 3 (94-103), 4 (104-111), 5 (111-120),
6 (121-131), 7 (132-150);
Texture : SPARSELY TO MOD PLAG PHYRIC, FRESH TO MOD ALTERED
GLASS AT 50 AND 54CM WITH GLASS AT 50CM BEING BOTTOM
OF UPPER PILLOW AND 54CM TOP OF PILLOW, 113-115CM
GLASS WITH CALCITE VEIN CONTAINING ANGULAR PCES OF
FRESH GLASS WITH ALTERED RIMS, 140-143CM IS TOP OF
PILLOW;
Structure : 65-70CM HAS A MOD CALCITE VEIN, 85-90CM HAS A
PINKISH GREY(7.5YR7/2) VEIN OF CARB CEMENT WITH
SMALL PCES OF BASALT AND ALTERED GLASS;
Alteration : FRESH TO MOD
PCES(1A,2A-E,4,111-115CM) ARE MOD ALTERED AND REST
OF CORE IS FRESH;
Comments : DARK GREY(7.5YRN4);
Vesicles : Size(mm): Percent: 5
Location: Filling: CALCITE
ABOUT 5% SMALL VESICLES MOSTLY EMPTY AND SOME
FILLED WITH CALCITE BETWEEN 0-5CM;
Phenocrysts: PLAGIOCLASE
LARGER(12MM) EQUANT PLAG PHENO AT 100CM;
Replacement: CARBONATE
CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/ 480 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 496.98
Core: 5 Top of Core Depth (m) : 489.00
Sect: 6 Top of Section Depth(m): 496.50
LITHOLOGY: SPARSELY TO MOD PLAG PHYRIC BASALT;
SAME AS CORE 5-1 THRU 5-5;
Piece No. : PCES 1 (0-11), 2 (14-23), 3 (25-38), 4 (39-47);
Texture : SPARSE TO MOD PLAG PHYRIC;
Vesicles : AT 38 TO 46CM THERE ARE IRREGULAR VESICLES FILLED
WITH CALCITE;
Phenocrysts: PLAGIOCLASE
Replacement: CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1430 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 499.43
Core: 6 Top of Core Depth (m) : 498.00
Sect: 1 Top of Section Depth(m): 498.00
LITHOLOGY: PLAG SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 1 (0-30), 2A (31-41), 2B (42-50), 2C (50-57),
3A (60-70), 3B (69-76), 4 (77-80), 5A (81-91),
5B (89-94), 6 (95-100), 7 (103-106), 8A (108-121),
8B (122-143);
Texture : SLIGHTLY TO MOD PLAG PHYRIC WITH PHENO CONTENT
DECREASING AND BECOMING MORE ROUNDED DOWN THE CORE,
ALTERED MULTIPLE GLASS RINDS SEPARATED BY CALCITE
VEINS AND SMALL UNALTERED PCES OF GLASS REMAIN IN
PCE(2A), PCE(7) HAS ALTERED DARK BROWN TO BLACK
GLASS;
Structure : CALCITE VEINS IN PCE(2A);
Alteration : MOD
ALTERED GLASS AND CALCITE WITH RUDDY ORANGE ZONE
(5YRN6/6) BETWEEN THE TWO IN PCE(7);
Comments : GREY(7.5YRN6/0);
Vesicles :
Location: Filling: CLAY, CALCITE
IRREGULAR VESICLES FOUND THROUGHOUT AND OFTEN WITH
GREENISH CLAY OR CALCITE INCLUDED, IRREGULAR
VESICLES FOUND THROUGHOUT ENTIRE UNIT 2;
Phenocrysts: PLAGIOCLASE
PHENO FREQUENCY DECREASING DOWN CORE AND BECOMING
MORE ROUNDED;
Replacement: CALCITE
CLAY
Leg : 82 Top/Bottom Interval(mm): 0/1360 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 500.86
Core: 6 Top of Core Depth (m) : 498.00
Sect: 2 Top of Section Depth(m): 499.50
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
SIMILAR TO 6-1;
Piece No. : PCES 1 (1-12), 2A (14-43), 2B (40-54), 2C (52-62),
2D (62-71), 2E (70-80), 2F (80-84), 2G (84-101),
2H (101-121), 3A (120-133), 3B (126-136);
Texture : SPARSELY PLAG PHYRIC;
Structure : MINOR CALCITE VEINS TO CA 1MM WITH WEATHERING ALONG
CRACKS;
Alteration : MOD
LIGHT BROWN WEATHERING ALONG MANY CRACKS;
Phenocrysts: PLAGIOCLASE ( 3%)
Size(mm): TO 4
APPROXIMATELY 3%, PHENOS ARE PRISMATIC TO ROUNDED;
Replacement: CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 502.50
Core: 6 Top of Core Depth (m) : 498.00
Sect: 3 Top of Section Depth(m): 501.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
SIMILAR TO 6-1 TO 6-2;
Piece No. : PCES 1A (0-30), 1B (28-55), 1C (55-61), 1D (61-86),
1E (86-95), 2 (97-102), 3A (105-120), 3B (120-125),
4 (129-136), 5 (135-150);
Texture : SPARSELY PLAG PHYRIC, NO GLASS BETWEEN PCES(3B-4);
Alteration : MOD TO EXTENSIVE
(0-45CM & 90-95CM) HAVE WEATHERED ZONE OF GREENISH
BROWN COLOR(2.5Y5/4) IN CONTRAST TO NORMAL LIGHT
BROWN(7.5YR6/4);
Vesicles : Size(mm): TO 1 Percent: 2-3
Location: Filling: CLAY, CHLORITE
0-60CM HAS VESICLES FILLED WITH DARK GREEN(5G5/2)
(?) CLAY OR CHLORITE;
Phenocrysts: PLAGIOCLASE
Replacement: CLAY
ID DARK GREEN CLAY UNCERTAIN;
CHLORITE
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 503.95
Core: 6 Top of Core Depth (m) : 498.00
Sect: 4 Top of Section Depth(m): 502.50
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
SIMILAR TO 6-1 TO 6-3;
Piece No. : PCES 1A (1-7), 1B (8-11), 2A (14-23), 2B (24-36),
3A (38-42), 3B (42-59), 4A (60-68), 4B (68-82),
4C (82-87), 5A (89-102), 5B (100-112), 5C (113-130),
5D (130-145);
Texture : PLAG SPARSELY PHYRIC BASALT;
Structure : CALCITE VEINS OPEN IN SEVERAL PLACES TO DRUSY
CAVITIES, AT 25CM THERE IS A DARK GREEN(?) CHLORITE
IN CAVITY IN CALCITE VEIN;
Alteration : MOD TO FRESH;
0-75CM ARE MOD ALTERED AND REST OF CORE IS FRESH;
Replacement: CALCITE
CHLORITE
CHLORITE MAY BE DARK GREEN(?);
Leg : 82 Top/Bottom Interval(mm): 0/1290 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 505.29
Core: 6 Top of Core Depth (m) : 498.00
Sect: 5 Top of Section Depth(m): 504.00
LITHOLOGY: PLAG MOD TO SPARSELY PHYRIC BASALT;
Piece No. : PCES 1A (2-12), 1B (15-41), 2A (50-73), 2B (74-77),
3 (79-83), 4A (83-104), 4B (105-116), 4C (116-121),
5 (124-129);
Texture : PLAG MOD PHYRIC TO SPARSELY PLAG PHYRIC DOWN CORE;
Structure : 80CM ONWARD THERE IS AN INCREASE IN OCCURRENCE AND
COMPLEXITY OF CALCITE VEIN PATTERN ALSO CORE BECOMES
LESS CRYSTALLINE AND MORE MASSIVE IN CHARACTER;
Alteration : FRESH TO MOD
CORE BECOMES MOD ALTERED BEGINNING AT 83CM TO END,
ALTERATION ABOUT CALCITE VEINS;
Comments : DRK GREY COLOR(7.5YRN4/0), THERE IS A POSSIBILITY OF
A MAJOR BREAK OCCURRING AT 80CM, GRADIENT IN COLOR
MOST NOTICEABLE FROM 80CM DOWN-GREY(7.5YRN6/0),
STEROSCOPIC EXAM FURTHER SUGGESTS HIGHLY WEATHERED
OLIVINES TO IDDINGSITE(?);
Vesicles : NOTICEABLE SMALL(<1MM) ORANGE BROWN PATCHES IN
IRREGULAR VESICLES-IDDINGSITE PROBABLY CLAY
ALTERATION PRODUCT;
Phenocrysts: PLAGIOCLASE
MOD TO SPARSELY PLAG PHYRIC DOWN CORE;
Replacement: IDDINGSITE
CLAY
IDDINGSITE IS PROBABLY CLAY ALTERATION PRODUCT;
CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1120 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 506.62
Core: 6 Top of Core Depth (m) : 498.00
Sect: 6 Top of Section Depth(m): 505.50
LITHOLOGY: PLAG SPARSELY PHYRIC TO APHYRIC BASALT;
Piece No. : PCES 1A (0-13), 1B (14-20), 1C (19-27), 1D (27-34),
1E (32-37), 2A (39-48), 2B (48-57), 3 (61-67),
4A (69-75), 4B (76-81), 5 (82-92), 6 (94-99),
7 (102-112);
Texture : PLAG SPARSELY PHYRIC TO APHYRIC, FINE-GRAINED;
Structure : 17-30CM HAS A LARGE CALCITE VEIN WITH FRESH ALTERED
GLASS;
Alteration : FRESH
Comments : MED GREY(7.5YRN6);
Phenocrysts: PLAGIOCLASE ( 1-2%)
EQUANT PLAG PHENOS(SIMILAR TO 85-130CM IN 6-5);
Groundmass : PLAGIOCLASE
SMALL PLAG LATHS;
OLIVINE
RED-BROWN ALTERED OL;
Replacement: CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 508.50
Core: 7 Top of Core Depth (m) : 507.00
Sect: 1 Top of Section Depth(m): 507.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (0-17), 2A (18-26), 2B (23-41), 2C (42-56),
2D (56-63), 2E (63-69), 3 (72-90), 4A (90-95),
4B (96-99), 5A (100-130), 5B (129-138),
5C (139-145), 6 (146-150);
Texture : APHYRIC BUT SPARSE EQUANT PLAG PHENOS TO 3MM ARE
PRESENT AND ALSO SPARSE ALTERED(RED-BROWN 7.5YR6/8)
PHENOS TO 1MM, FINE-GRAINED;
Alteration : FRESH;
Comments : LIGHT GREY(7.5YRN6);
Vesicles : Size(mm): TO 1 Percent: 3-4
Location: Filling: CALCITE
VARYING AMOUNT OF VESICLES, MOST ARE EMPTY BUT SOM
ARE FILLED WITH CALCITE;
Phenocrysts: PLAGIOCLASE
SPARSE EQUANT PLAG PHENOS;
OLIVINE
Size(mm): TO 1
THERE COULD BE SOME SPARSE ALTERED OL PHENOS;
Replacement: CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 509.95
Core: 7 Top of Core Depth (m) : 507.00
Sect: 2 Top of Section Depth(m): 508.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (0-17), 1B (17-35), 2 (36-46), 3A (46-59),
3B (58-67), 4 (68-80), 5A (81-96), 5B (96-112),
5C (110-116), 5D (117-129), 5E (129-137),
5F (135-145);
Texture : APHYRIC BUT SOME PATCHES OF SLIGHTLY PLAG PHYRIC
BASALT MAINLY IN THE TOP 35CM, FINE-GRAINED, 13-20CM
CONTAINS GLASS FRAGMENTS IMBEDDED IN AND ALTERED/
REACTED WITH CALCITE;
Structure : CALCITE VEINS;
Alteration : FRESH TO MODERATE;
Comments : LIGHT GREY(7.5YRN6/0);
Vesicles : IRREGULAR VESICLES THROUGHOUT-EXTENSIVE
CONCENTRATION ABOUT CALCITE VEINS, VESICLES ARE
EMPTY OR CONTAIN GREEN CLAY OR CALCITE;
Phenocrysts: PLAGIOCLASE
SOME PATCHES OF PLAG PHYRIC BASALT IN TOP 35CM;
Groundmass : OLIVINE
Size(mm): <1.5
ALTERED OL CRYSTALS TO IDDINGSITE PRODUCT;
Replacement: CALCITE
CLAY
GREEN CLAY;
IDDINGSITE
Leg : 82 Top/Bottom Interval(mm): 0/1470 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 511.47
Core: 7 Top of Core Depth (m) : 507.00
Sect: 3 Top of Section Depth(m): 510.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (0-8), 1B (6-23), 2A (26-38), 2B (39-48),
2C (47-55), 3A (57-60), 3B (61-64), 3C (65-67),
3D (68-70), 4A (74-88), 4B (88-99), 4C (98-120),
5 (121-127), 6A (130-136), 6B (137-142),
6C (143-147);
Texture : APHYRIC, FINE-GRAINED, SCATTERED EQUANT PLAG PHENOS;
Alteration : MOD;
Comments : SCATTERED PLAG PHENOS ARE SIMILAR TO THOSE IN 7-2;
Vesicles : VESICLES SCARCE;
Leg : 82 Top/Bottom Interval(mm): 0/ 570 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 512.07
Core: 7 Top of Core Depth (m) : 507.00
Sect: 4 Top of Section Depth(m): 511.50
LITHOLOGY: APHYRIC BASALT;
VESICULAR;
Piece No. : PCES 1A (0-8), 1B (11-14), 1C (15-19), 2A (21-24),
2B (25-30), 2C (30-33), 2D (31-34), 3A (35-39),
3B (36-40), 4A (42-44), 4B (44-48), 4C (48-57);
Texture : APHYRIC, LIGHT BROWN(10YRN6/2) GLASS FRAGMENTS IN
PCES(1A,1C), PCES(4C) IS GRAVEL CONTAINING A MIXTURE
OF SMALL APHYRIC BASALT AND CALCITIC CHIPS;
Structure : THERE IS A HIGH DEGREE OF CALCITE VEIN INTRUSION
CAUSING DISTINCT ALTERATION ABOUT VEINS;
Alteration : FRESH TO MOD
PCES(1A-C, 3A-B, 4B-C) ARE MOD ALTERED AND REST OF
CORE IS FRESH;
Comments : LIGHT GREY BASALT(7.5YRN6), PCES(3A-B) COULD BE
CALCAREOUS SEDIMENT(?) POSITIVE AND TEST;
Vesicles : VESICULAR;
Replacement: CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1390 Analyst: Brannon, J.
Hole: 556 Sample Midpoint (m) : 517.39
Core: 8 Top of Core Depth (m) : 516.00
Sect: 1 Top of Section Depth(m): 516.00
LITHOLOGY: OL-PLAG MICROPHYRIC BASALT TO OL MOD MICROPHYRIC
BASALT;
Piece No. : PCES 1 (0-5), 2A (6-15), 2B (16-20), 3A (20-24),
3B (25-30), 3C (30-36), 3D (38-40), 4A (40-44),
4B (45-50), 5A (51-61), 5B (61-63), 5C (63-66),
5D (67-74), 5E (74-82), 5F (81-87), 5G (89-93),
6A (94-97), 6B (100-105), 7 (106-114),
8A (115-126), 8B (125-139);
Texture : THE FIRST 0-5CM ARE PLAG-OL MICROPHYRIC BASALT WITH
PLAG PHENOS ANHEDRAL AND PARTIALLY RESORBED, THE
LAST 5-14CM ARE MODERATELY OLIVINE MICROPHYRIC AND
FINE-GRAINED, AT 40-50CM AND 60-68CM THERE ARE
BROKEN PCES OF GLASS;
Alteration : MOD TO FRESH
PCES(1-3D,5A,5D-6B,8A-B) ARE MOD ALTERED, OL IS
ALTERED AND GLASS IS ALTERED TO PALAG;
Comments : NEW UNIT FROM 5-140CM IS GREY(7.5YRN6/0), BROKEN
PCES OF GLASS AND/OR BASALT WHICH HAVE ALTERED TO
PALAGONITE, SOME PCES OF PALAGONITE HAVE BASALT
CORE, ALL PCES ARE CEMENTED WITH MICRITIC AND THEN
SPARRY CALCITE CEMENT, THIN SECTION TAKEN TO COMPARE
ALTERED AND FRESH BASALT AND CEMENTED PALAGONITE
PCES;
Vesicles : Size(mm): Percent: 5
Location: Filling: ROUNDED
Phenocrysts: PLAGIOCLASE ( TO 5%)
PLAG IS ANHEDRAL AND PARTLY RESORBED BUT ABSENT
AFTER 5CM, ALSO MICROPHYRIC;
OLIVINE ( 5-7%)
OL ARE ALTERED AND MOD MICROPHYRIC AND PRESENT
FROM 5-140CM;
Groundmass : GLASS
Replacement: PALAGONITE
CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 519.00
Core: 8 Top of Core Depth (m) : 516.00
Sect: 2 Top of Section Depth(m): 517.50
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCES 1 (0-19), 2A (20-25), 2B (23-34), 3 (36-40),
4A (42-48), 4B (48-58), 5A (60-64), 5B (64-68),
5C (68-75), 5D (74-91), 5E (90-93), 5F (94-99),
5G (100-105), 5H (105-114), 5I (114-120),
5J (120-123), 6 (124-134), 7A (137-140),
7B (141-150);
Texture : MOD PHYRIC, PALAGONITE RINDS PRESENT NEAR BRECCIATED
FRACTURES;
Structure : WHOLE SECTION IS HIGHLY FRACTURED, SOME FRACTURES
ARE FILLED WITH SPARRY CALCITE CEMENT(SEE PCES 4,6,
7), FROM 68CM TO 120CM A FRACTURE OCCURS WHICH IS
FILLED WITH HIGHLY PALAGONATIZED BASALT BRECCIA, IT
IS FINALLY CEMENTED BY CALCITE, THE SAME OCCURS IN
PCE(7), THESE BRECCIATED FRACTURES ARE FOLLOWED BY
PALAGONITE RINDS;
Alteration : FRESH TO MOD
PCES(4B-END) ARE MOD ALTERED;
Comments : GREY(7.5YRN6);
Vesicles : VESICLES ARE COMMON AND EMPTY;
Phenocrysts: OLIVINE ( 5-7%)
Size(mm): 1-5
OL IS MOSTLY ALTERED TO SMEC, THERE ARE SOME LARGE
EQUANT AND LIGHT COLORED PHENOS IN THE UPPER 35CM
OF THE SECTION WHICH COULD BE PLAG(?);
Replacement: CALCITE
SMECTITE
Minerals Replaced: OL
Leg : 82 Top/Bottom Interval(mm): 0/1460 Analyst: Brannon, J.
Hole: 556 Sample Midpoint (m) : 520.46
Core: 8 Top of Core Depth (m) : 516.00
Sect: 3 Top of Section Depth(m): 519.00
LITHOLOGY: OL PHYRIC BASALT;
SEE CORE 8-2 FOR DETAILS OF THIS BASALT;
Piece No. : PCES 1A (1-5), 1B (5-15), 1C (16-19), 2A (21-28),
2B (29-31), 2C (29-40), 3A (40-42), 3B (43-49),
3C (47-56), 3D (56-59), 3E (61-63), 3F (63-74),
4 (75-80), 5A (81-83), 5B (84-86), 5C (88-90),
6 (90-101), 7A (101-105), 7B (101-103),
7C (105-107), 7D (108-110), 7E (111-113),
7F (113-117), 8A (119-122), 8B (123-130),
9A (131-140), 9B (140-146);
Texture : MOD PHYRIC, RARE RESORBED PLAG PARTIALLY RESORBED
PHENOS PRESENT IN PARTS OF SECTION;
Alteration : MOD
Comments : SEE CORE 8-2 FOR DETAILS;
Phenocrysts: OLIVINE (TO 10%)
PLAGIOCLASE
RARE 2MM RESORBED PLAG PARTIALLY RESORBED PHENO
ARE FOUND IN PCES: 1B(8-10), 1C(23-24), 3E(62);
Leg : 82 Top/Bottom Interval(mm): 0/1420 Analyst: Cande, S.
Hole: 556 Sample Midpoint (m) : 521.92
Core: 8 Top of Core Depth (m) : 516.00
Sect: 4 Top of Section Depth(m): 520.50
LITHOLOGY: OL PHYRIC BASALT;
Piece No. : PCES 1A (0-4), 1B (4-7), 2A (8-16), 2B (17-21),
2C (21-26), 2D (26-30), 2E (30-32), 2F (33-36),
2G (35-41), 2H (42-47), 2I (48-52), 3A (54-59),
3B (60-65), 3C (65-69), 4A (71-77), 4B (75-82),
4C (82-88), 5A (90-97), 5B (98-100), 5C (100-106),
5D (106-115), 5E (116-123), 6A (125-127),
6B (129-134), 6C (134-142);
Texture : OL PHYRIC, ALMOST WHOLE SECTION IS BRECCIATED;
Structure : FRACTURES AND VEINS;
Alteration : MOD
Comments : LIGHT BROWNISH GREY TO GREY(2.5Y6/2 TO 2.5Y6/0),
ALMOST WHOLE SECTION IS BRECCIATED AND SHOWS
PALAGONITIZATION AND CALCITE CEMENTATION IN AND
CLOSE TO THE FRACTURES AND VEINS;
Phenocrysts: OLIVINE ( 10%)
Size(mm): 0.8-1.0
OL IS MOSTLY ALTERED;
Leg : 82 Top/Bottom Interval(mm): 0/ 500 Analyst: Brannon, J.
Hole: 556 Sample Midpoint (m) : 522.50
Core: 8 Top of Core Depth (m) : 516.00
Sect: 5 Top of Section Depth(m): 522.00
LITHOLOGY: OL PHYRIC BASALT;
BRECCIA;
Piece No. : PCES 1 (1-5), 2A (6-16), 2B (17-23), 2C (24-29),
2D (30-39), 3 (40-50);
Texture : PHYRIC, BRECCIATED PCES FAIRLY ROUNDED AND CEMENTED
BY CALCITE AND OF VARIABLE SIZE-LARGER PCES ARE OL
PHYRIC BASALT AND SOME OF THE SMALLER PCES ARE
BASALT AND SOME ALSO PALAGONITE;
Alteration : MOD
Comments : LARGER PCES ARE LIGHT BROWNISH GREY(2.5Y6/2);
Vesicles : MOSTLY EMPTY ROUND VESICLES;
Phenocrysts: OLIVINE
Replacement: CALCITE
CEMENTING BRECCIA;
PALAGONITE
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 526.50
Core: 9 Top of Core Depth (m) : 525.00
Sect: 1 Top of Section Depth(m): 525.00
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCES 1A (0-8), 1B (9-15), 1C (11-21), 2A (22-27),
2B (27-31), 2C (30-37), 3A (38-41), 3B (42-45),
3C (44-45), 3D (46-48), 3E (49-54), 3F (54-58),
3G (58-60), 4A (60-68), 4B (71-73), 5 (75-83),
6A (98-102), 6B (88-91), 6C (91-95), 6D (95-97),
6E (98-102), 6F (102-105), 7A (105-115),
7B (115-122), 7C (122-132), 7D (130-138),
8 (140-150);
Texture : OL MOD PHYRIC, MEDIUM-GRAINED, BASALT BRECCIA;
Structure : FROM 110CM TO BOTTOM FRACTURES ARE FILLED BY CARB
CEMENT;
Alteration : MOD TO EXT
FROM 0-105CM BASALT IS MOD TO BADLY ALTERED;
FRESH
FROM CA 110CM TO BOTTOM BASALT IS FAIRLY FRESH;
Comments : FROM O-50CM CALCITE CEMENTATION INCREASES, BASALT IS
GREY(2.5YN5.0) FROM CA 110CM TO END;
Vesicles : FROM 0-105CM BASALT IS VESICULAR, MOST OF THE
VESICLES THROUGHOUT THE WHOLE SECTION ARE NOT
FILLED;
Phenocrysts: OLIVINE ( 5-10%)
Size(mm): >1
OL IS ALTERED TO SMEC;
Replacement: PALAGONITE
FROM 0-CA 50CM MATRIX CONSISTS OF ANGULAR ROUNDED
PALAGONITE PCES;
SMECTITE
Minerals Replaced: OL
CALCITE
CALCITE CEMENTATION;
CARBONATE
CARBONATE CEMENT;
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 527.95
Core: 9 Top of Core Depth (m) : 525.00
Sect: 2 Top of Section Depth(m): 526.50
LITHOLOGY: OL MICROPHYRIC BASALT;
Piece No. : PCES 1A (1-6), 1B (7-11), 1C (12-17), 2A (17-26),
2B (24-37), 2C (36-44), 3A (44-52), 3B (53-61),
3C (62-71), 4A (72-77), 4B (79-85), 5A (86-94),
5B (94-107), 5C (109-120), 6A (122-126),
6B (125-129), 7A (129-136), 7B (136-145);
Texture : OL MICROPHYRIC, GLASS ALTERED TO PALAG;
Structure : CALCITE VEINS, AT 120-145CM CALCITE VEIN WITH PALAG
GLASS, CALCITE VEINS INFILTRATE THE BASALT-PATTERN
QUITE COMPLEX AND FREQUENT DOWN CORE;
Alteration : EXT
ALTERATION OF BASALT ABOUT CALCITE VEINS YIELDS
CLAY/BASALT MIXTURE, GENERAL ALTERATION TO BROWN
THROUGHOUT AND VERY NOTICEABLE IN PCES(3A-C,5A-C),
AT 107-118CM GLASS IS ALTERED TO PALAGONITE AND
SURROUNDED BY CALCITE ALTERATION;
Comments : LIGHT GREY BASALT(7.5YRN/6) WITH 107-118CM A RUDDY
ORANGE COLOR(7.5YRN7/6) DUE TO ALTERATION, MOST OF
SECTION APPEARS TO REPRESENT A SINGLE MASSIVE FLOW,
INTERPRETED AS BRECCIATED BASALT TRANSITION ZONE-
JUST FRACTURED AND SLIGHTLY MOVED TO STATIONARY;
Vesicles : Size(mm): TO 1 Percent:
Location: Filling: CALCITE, CLAY
IRREGULAR VESICLES THROUGHOUT OFTEN EMPTY BUT SOME
FILLED WITH CALCITE OR CLAY ALTERATION PRODUCT;
Phenocrysts: OLIVINE
MICROPHYRIC;
Replacement: PALAGONITE
Minerals Replaced: GLASS
CALCITE
CLAY
CLAY/BASALT MIXTURE FROM BASALT ALTERATION ABOUT
CALCITE VEINS;
Leg : 82 Top/Bottom Interval(mm): 0/1440 Analyst: Brannon, J.
Hole: 556 Sample Midpoint (m) : 529.44
Core: 9 Top of Core Depth (m) : 525.00
Sect: 3 Top of Section Depth(m): 528.00
LITHOLOGY: OL MOD PHYRIC BASALT;
BRECCIA;
Piece No. : PCES 1 (0-7), 2 (7-21), 3 (21-26), 4 (27-35),
5A (36-42), 5B (43-52), 5C (52-57), 5D (56-64),
5E (54-71), 5F (72-77), 5G (77-83), 6 (83-95),
7A (96-106), 7B (107-125), 7C (125-137),
7D (137-144);
Texture : OL MOD PHYRIC, FINE-GRAINED, 0-30CM IS BASALT WHILE
REST OF CORE IS A BASALT BRECCIA MADE UP OF ANGULAR
AND SUBROUNDED PCES OF MODERATELY OL MICROPHYRIC
BASALT, THESE PCES RANGE FROM 10CM TO A FEW MM;
Alteration : MOD
DEGREE OF ALTERATION IS NOT A FUNCTION OF SIZE-
(SMALLER PCES ARE GREATER THAN LARGER PCES);
Comments : GREY(7.5YRN5);
Vesicles : Size(mm): Percent: 5
VESICLES ARE PRESENT IN FIRST 30CM;
Phenocrysts: OLIVINE
Size(mm): 5
OL ALTERED TO SMEC;
Replacement: SMECTITE
CARBONATE
PRESENT IN MATRIX;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 531.00
Core: 9 Top of Core Depth (m) : 525.00
Sect: 4 Top of Section Depth(m): 529.50
LITHOLOGY: BASALT BRECCIA;
OL MOD PHYRIC TO APHYRIC BASALT;
Piece No. : PCES 1A (0-11), 1B (11-20), 1C (20-26), 1D (25-30),
2A (31-37), 2B (38-46), 2C (46-55), 3A (56-64),
3B (61-72), 3C (72-78), 3D (78-84), 4 (85-94),
5 (95-105), 6 (106-124), 7 (115-124), 8A (125-132),
8B (134-136), 8C (137-141), 8D (143-150);
Texture : BASALT BRECCIA WITH UPPER HALF OL-PHYRIC, FROM CA
55CM TO END BASALT IS APHYRIC;
Alteration : FRESH TO MOD;
Comments : BASALT IS GREY TO LIGHT BROWNISH GREY(2.5YN6 TO
2.5Y6/2), COLOR OF MATRIX IS LIGHT YELLOWISH GREY
(2.5Y7/2);
Vesicles :
Location: Filling: SMEC
VESICLES ARE SCATTERED THROUGHOUT SECTION AND ARE
PARTLY FILLED WITH SMEC AND PARTLY EMPTY;
Phenocrysts: OLIVINE ( <5%)
Size(mm): <1
OL PHYRIC FROM 0-55CM;
Replacement: SMECTITE
Leg : 82 Top/Bottom Interval(mm): 0/1060 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 532.06
Core: 9 Top of Core Depth (m) : 525.00
Sect: 5 Top of Section Depth(m): 531.00
LITHOLOGY: APHYRIC BASALT BRECCIA;
Piece No. : PCES 1 (0-6), 2 (7-14), 3 (15-23), 4 (25-35),
5 (36-44), 6 (45-50), 7 (50-57), 8A (59-69),
8B (66-74), 9 (75-79), 10 (81-89), 11 (91-98),
12 (99-105);
Texture : APHYRIC BASALT, HINTS OF INITIAL PHASES OF
BRECCIATED BASALT ZONE, 35-42CM IS BRECCIATED BASALT
WITH CARB CEMENT AND 44-50CM IS BRECCIATED BASALT
PCES WITH CARB CEMENT;
Alteration : MOD
Comments : COLOR(10YRN6/1), 91-92CM IS HAZY BRECCIATED BASALT
TRANSITION ZONE WITH LIGHT BROWN GREY(10YR6/2)
CALCITE CEMENT;
Leg : 82 Top/Bottom Interval(mm): 1060/1200 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 532.20
Core: 9 Top of Core Depth (m) : 525.00
Sect: 5 Top of Section Depth(m): 532.06
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCES 13 (106-111), 14 (113-120);
Texture : PLAG PHYRIC, CLASTS UP TO 3-5MM, PCES OF SLIGHTLY
PLAG PHYRIC BASALT IN PCE(14);
Phenocrysts: PLAGIOCLASE
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 535.45
Core: 10 Top of Core Depth (m) : 534.00
Sect: 1 Top of Section Depth(m): 534.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1A (0-5), 1B (5-17), 1C (18-31), 1D (32-47),
1E (48-52), 1F (53-60), 2A (62-72), 2B (73-83),
2C (84-90), 2D (90-97), 3 (98-107), 4 (109-115),
5 (115-128), 6 (130-145);
Texture : PLAG MOD PHYRIC;
Structure : NARROW CALCITIC VEIN AT 30CM;
Alteration : MOD;
Comments : GREY(2.5YN5/0), MATRIX IS OLIVE(5Y5/3) WITH MANY
ANGULAR PCES OF BASALT;
Vesicles :
Location: Filling: SMEC
VESICLES COMMON AND MOSTLY FILLED WITH SMEC;
Phenocrysts: PLAGIOCLASE
MOD PHYRIC;
Replacement: CALCITE
PARTLY CALCITE-CEMENT WITH SOME OPEN CAVITIES;
SMECTITE
Leg : 82 Top/Bottom Interval(mm): 0/1400 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 536.90
Core: 10 Top of Core Depth (m) : 534.00
Sect: 2 Top of Section Depth(m): 535.50
LITHOLOGY: PLAG MOD PHYRIC BASALT ;
BASALT BRECCIA;
Piece No. : PCES 1A (0-6), 1B (6-19), 1C (19-25), 1D (25-31),
1E (32-48), 1F (48-55), 1G (55-61), 1H (61-67),
1I (70-76), 2A (79-89), 2B (90-99), 2C (99-107),
3A (109-123), 3B (123-139);
Texture : BRECCIA, ANGULAR CLASTS OF PLAG MOD PHYRIC BASALT IN
A MATRIX OF INDURATED LIGHT GREY-GREEN(5Y5/3)
CALCAREOUS(?) OOZE;
Alteration : MOD;
Comments : LIGHT GREY(2.5YN5/0), MATRIX CONTAINS INDURATED
CALCAREOUS(?) OOZE;
Phenocrysts: PLAGIOCLASE ( TO 5%)
Size(mm): TO 2
CA 5% EQUANT PLAG PHENOS;
Leg : 82 Top/Bottom Interval(mm): 0/1470 Analyst: Weaver, B.
Hole: 556 Sample Midpoint (m) : 538.47
Core: 10 Top of Core Depth (m) : 534.00
Sect: 3 Top of Section Depth(m): 537.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
BASALT BRECCIA, SAME AS 10-2;
SAME AS 10-2;
Piece No. : PCES 1A (0-14), 1B (14-21), 2 (24-27), 3 (30-39),
4 (40-49), 5A (60-71), 5B (71-77), 5C (77-91),
5D (91-101), 5E (101-110), 5F (110-116),
5G (116-125), 5H (125-140), 5I (140-147);
Texture : PLAG PHYRIC;
Alteration : MOD;
Comments : BECOMING LESS PLAG PHYRIC DOWNWARDS BUT OTHERWISE
EXACTLY AS 10-2;
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 539.95
Core: 10 Top of Core Depth (m) : 534.00
Sect: 4 Top of Section Depth(m): 538.50
LITHOLOGY: BASALT BRECCIA(APHYRIC TO PHYRIC);
SIMILAR TO 10-2 AND 10-3;
Piece No. : PCES 1A (0-4), 1B (4-10), 1C (10-20), 2A (20-30),
2B (30-35), 3 (35-41), 4 (43-54), 5 (55-60),
6A (60-70), 6B (70-76), 7 (77-80), 8 (81-89),
9 (90-100), 10 (100-109), 11 (110-118),
12 (119-127), 13 (128-134), 14 (135-145);
Texture : BASALT BRECCIA, CLASTS ARE ANGULAR, FINE-GRAINED
AND APHYRIC WITH VERY SPARSE OLIVINE AND PLAG PHENOS
IN A MATRIX OF INDURATED LIGHT GREY-GREEN(5Y5/3)
CALCAREOUS OOZE;
Comments : MED GREY(5Y5/1);
Phenocrysts: PLAGIOCLASE
OLIVINE
SPARSE AND SMALL;
Leg : 82 Top/Bottom Interval(mm): 0/ 750 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 540.75
Core: 10 Top of Core Depth (m) : 534.00
Sect: 5 Top of Section Depth(m): 540.00
LITHOLOGY: BASALT BRECCIA;
APHYRIC TO PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-8), 2 (12-20), 3 (22-36), 4 (29-34),
5 (34-43), 6 (45-50), 7 (51-59), 8 (62-66),
9 (67-70), 10 (71-74);
Texture : APHYRIC, FINE-GRAINED, BRECCIA WITH OCCASIONAL PLAG
PHENOS;
Comments : MED GREY;
Phenocrysts: PLAGIOCLASE
Size(mm): TO 2
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 544.50
Core: 11 Top of Core Depth (m) : 543.00
Sect: 1 Top of Section Depth(m): 543.00
LITHOLOGY: BASALT BRECCIA;
APHYRIC TO PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (1-5), 2 (6-13), 3 (14-23), 4 (25-32),
5 (34-38), 6 (37-52), 7 (53-62), 8 (64-70),
9 (70-76), 10 (76-83), 11 (84-95), 12 (95-104),
13 (104-113), 14 (115-120), 15 (121-124),
16 (125-132), 17 (133-138), 18 (138-144),
19 (143-150);
Texture : BRECCIA, FINE-GRAINED ANGULAR CLASTS, APHYRIC WITH
VERY SPARSE PLAG PHENOS AND ALTERED OL IN A MATRIX
OF INDURATED DARK OLIVE GREY(5Y4/3);
Alteration : SLIGHT TO MOD;
Comments : MED GREY(2.5YN6), AT 17CM THERE IS A LARGE(1CM)
CAVITY FILLED WITH CALCITE AND DARK GREEN CLAYS(?);
Vesicles : Size(mm): TO 1 Percent:
Location: Filling: CALCITE, CLAY
SPARSE VESICLES THROUGHOUT, SOME EMPTY AND SOME
FILLED WITH CALCITE AND/OR GREEN CLAY;
Phenocrysts: PLAGIOCLASE
VERY SPARSE;
OLIVINE
ALTERED TO SMEC;
Replacement: CALCITE
CLAY
CLAYS ARE GREEN;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 546.00
Core: 11 Top of Core Depth (m) : 543.00
Sect: 2 Top of Section Depth(m): 544.50
LITHOLOGY: BASALT BRECCIA;
APHYRIC BASALT;
Piece No. : PCES 1 (0-7), 2 (7-16), 3 (17-23), 4 (24-34),
5 (36-42), 6 (44-47), 7 (49-56), 8 (57-63),
9 (64-68), 10 (69-75), 11 (76-83), 12 (83-88),
13 (90-95), 14 (95-100), 15 (100-112), 16 (113-117),
17 (119-127), 18A (127-134), 18B (134-137),
19 (129-144), 20 (144-150);
Texture : BRECCIA, FINE-GRAINED, APHYRIC, MOSTLY SINGLE PCES
OF BASALT BUT AT 25-35CM AND 103-113CM AND 130-135CM
THERE ARE ANGULAR AND SUBROUNDED BASALT CLASTS IN A
DARK GREY-GREEN(5GY3/2) CHLORITE(?) CARB MATRIX;
Alteration : MOD TO EXT;
EXTENSIVE RED(5R4/6) ALTERATION IN BANDS OR ON
SURFACE;
Replacement: CARBONATE
CHLORITE
Leg : 82 Top/Bottom Interval(mm): 0/ 700 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 546.70
Core: 11 Top of Core Depth (m) : 543.00
Sect: 3 Top of Section Depth(m): 546.00
LITHOLOGY: BASALT BRECCIA;
APHYRIC BASALT;
Piece No. : PCES 1 (0-6), 2 (9-14), 3 (15-25), 4 (28-31),
5 (34-38), 6 (40-44), 7 (45-54), 8 (55-60),
9 (62-70);
Texture : BRECCIA, APHYRIC BASALT WITH SUBROUNDED CLASTS IN A
DARK GREEN(5GY3/2) CHLORITE(?) MATRIX AND AT 44-52CM
IT COULD BE A CHLORITE(?)-CARB MATRIX AND FROM
52-70CM THERE IS NO MATRIX PRESENT;
Alteration : MOD
RED ALTERATION BANDS PRESENT IN MANY PCES(5RY/6);
Comments : LIGHT GREY(2.5YN5);
Leg : 82 Top/Bottom Interval(mm): 0/1330 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 553.33
Core: 12 Top of Core Depth (m) : 552.00
Sect: 1 Top of Section Depth(m): 552.00
LITHOLOGY: BASALT BRECCIA(APHYRIC TO PLAG PHYRIC);
Piece No. : PCES 1 (0-7), 2A (7-16), 2B (16-27), 2C (28-40),
3 (40-45), 4A (45-52), 4B (48-65), 4C (64-73),
4D (73-80), 4E (80-90), 4F (90-93), 4G (94-101),
5A (101-103), 5B (104-110), 6A (110-120),
6B (120-135);
Texture : BRECCIA, CLASTS ARE MEDIUM TO FINE-GRAINED AND
APHYRIC TO SPARSELY PLAG PHYRIC IN A MATRIX OF
GREENISH-GREY(5Y5/3) SILT-FINE SAND SIZE SEDIMENTARY
MATRIX(NON-CARBONATE);
Structure : MATRIX CONTAINS CA 5% FINE CARB VEINS;
Alteration : MOD;
Comments : MED GREY(5Y4/1);
Phenocrysts: PLAGIOCLASE
SPARSELY PHYRIC;
Replacement: CARBONATE
CARB VEINS;
Leg : 82 Top/Bottom Interval(mm): 1350/1500 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 553.50
Core: 12 Top of Core Depth (m) : 552.00
Sect: 1 Top of Section Depth(m): 553.35
LITHOLOGY: BASALT BRECCIA;
ALTERED BASALT BRECCIA SIMILAR TO DESCRIPTION FOR
12-2;
Piece No. : PCE 7 (135-150);
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 555.00
Core: 12 Top of Core Depth (m) : 552.00
Sect: 2 Top of Section Depth(m): 553.50
LITHOLOGY: BASALT BRECCIA;
APHYRIC BASALT;
Piece No. : PCES 1A (1-15), 1B (16-26), 2A (28-42), 2B (40-49),
2C (50-56), 3A (58-64), 3B (65-77), 3C (77-80),
4A (82-87), 4B (89-100), 5A (104-106), 5B (110-120),
6A (120-131), 6B (132-142), 7 (144-148);
Texture : ALTERED BASALT BRECCIA(HYALOCLASTIC), CLASTS ARE
ANGULAR, FINE-GRAINED AND APHYRIC TO CA 5CM MAX
DIAMETER IN A WHITE TO LIGHT GREEN MATRIX, BLACK
DEVITRIFIED PILLOW FRAGMENTS GRADING TO LIGHT BROWN
(10YR6/1) INTERIORS, ROUNDED TO ANGULAR GLASS
FRAGMENTS SOME FRESH BUT MOST ALTERED;
Alteration : EXT
ALTERED BRECCIA, BASALT CLASTS ALMOST ENTIRELY
ALTERED TO LIGHT BROWNISH GREY(10YR6/1) TO RED
(2.5YR4/4), GLASS FRAGMENTS ARE MOSTLY ALTERED TO
RUSTY BROWN OR GREEN(10GY3/2) ALTHOUGH SOME ARE
FRESH;
Comments : PCE(7) CORE 12-1 IS SIMILAR TO THIS CORE;
Replacement: GLASS
Leg : 82 Top/Bottom Interval(mm): 0/1300 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 556.30
Core: 12 Top of Core Depth (m) : 552.00
Sect: 3 Top of Section Depth(m): 555.00
LITHOLOGY: BASALT BRECCIA;
SIMILAR TO 12-2;
Piece No. : PCES 1A (0-3), 1B (5-7), 2A (10-20), 2B (20-24),
3A (25-40), 3B (40-47), 3C (47-56), 3D (55-63),
3E (63-73), 3F (73-81), 3G (80-90), 4A (92-97),
4B (99-102), 4C (102-107), 4D (110-118),
4E (118-130);
Leg : 82 Top/Bottom Interval(mm): 1300/1500 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 556.50
Core: 12 Top of Core Depth (m) : 552.00
Sect: 3 Top of Section Depth(m): 556.30
LITHOLOGY: BASALT BRECCIA;
Piece No. : PCES 5A (131-135), 5B (135-141), 5C (141-150);
Texture : ALTERED BASALT BRECCIA WITH APHYRIC BASALT CLASTS
IN A REDDISH MATRIX OF COMMINUTED BASALT FRAGMENTS;
Structure : CHLORITE ALONG FRACTURE SURFACES IN MATRIX;
Alteration : EXT
ALTERED BRECCIA, CLASTS HAVE RED(2.5YR4/4) ALTERED
RIMS;
Replacement: CHLORITE
Leg : 82 Top/Bottom Interval(mm): 0/1290 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 557.79
Core: 12 Top of Core Depth (m) : 552.00
Sect: 4 Top of Section Depth(m): 556.50
LITHOLOGY: BASALT BRECCIA;
APHYRIC BASALT;
Piece No. : PCES 1 (0-10), 2A (11-16), 2B (16-20), 3A (20-31),
3B (20-26), 4A (32-39), 4B (39-42), 5 (44-52),
6 (52-58), 7 (60-66), 8 (69-85), 9 (75-93),
10 (94-100), 11 (105-114), 12 (115-127);
Texture : BASALT BRECCIA, APHYRIC;
Alteration : MOD
MORE RED ALTERATION RIMS;
Comments : 33-40CM AND 52-57CM HAS REDDISH(5R5/4) MICRITIC
CHALK, SIMILAR TO 12-3;
Leg : 82 Top/Bottom Interval(mm): 0/ 950 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 561.95
Core: 13 Top of Core Depth (m) : 561.00
Sect: 1 Top of Section Depth(m): 561.00
LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;
Piece No. : PCES 1A (0-5), 1B (5-9), 2A (10-12), 2B (14-18),
2C (17-22), 3 (25-31), 4A (35-43), 4B (44-51),
5 (54-57), 6A (59-70), 6B (70-73), 7A (75-80),
7B (80-86), 8A (89-93), 8B (93-95);
Texture : CLASTS ARE SERPENTINIZED OPX-GABBRO WITH 10-15%
ALTERED PYX(OPX ?) AND MINOR ANGULAR CLASTS OF
WHITE PLAG AND BLACK CPX AND GABBRO ALL IN A
MATRIX OF NONDESCRIPT BROWNISH-GREEN FINE-GRAINED
MATERIAL(2.5Y5/4);
Structure : WEAK FOLIATION;
Alteration : ALMOST COMPLETELY ALTERED, ALTERED PYX(OPX ?) IS
BROWN(10YR6/4 TO 10YR5/4), THE SERP-GABBRO-CPX IS
GREENISH BLACK(5Y2/2) AND THE WEATHERING IS
GREENISH BROWN(5Y5/3);
Leg : 82 Top/Bottom Interval(mm): 0/1440 Analyst: Brannon, J.
Hole: 556 Sample Midpoint (m) : 566.94
Core: 14 Top of Core Depth (m) : 565.50
Sect: 1 Top of Section Depth(m): 565.50
LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;
Piece No. : PCES 1 (0-7), 2 (8-25), 3A (30-36), 3B (35-46),
3C (46-53), 3D (55-60), 3E (60-66), 3F (66-69),
3G (70-77), 3H (77-80), 3I (80-85), 4 (86-97),
5 (100-107), 6A (108-112), 6B (113-119),
7 (121-125), 8 (126-132), 9 (134-143);
Texture : PCE(1) HAS LARGE PLAG CRYSTAL(3CM) WITH BLACK PYX
(SEE 13-1 DESCRIPTION), 30-86CM HAS SERPENTINIZED
CPX-GABBRO, 86-107CM HAS POLYMICT BRECCIA WITH CARB
CEMENT, 107-134CM IS CPX-GABBRO WITH CA 10% PYX,
134-144CM IS POLYMICT BRECCIA WITH PLAG CLASTS;
Structure : CALCITE VEINS AT 30-86CM;
Alteration : EXT ALTERED
107-134CM IS MOD ALTERED;
Comments : FOR 0-30CM SEE 13-1 FOR DESCRIPTION;
Phenocrysts: PLAGIOCLASE
CRYSTAL;
CLINOPYROXENE
BLACK;
Replacement: CALCITE
SERPENTINITE
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Mills, W. M.
Hole: 556 Sample Midpoint (m) : 568.45
Core: 14 Top of Core Depth (m) : 565.50
Sect: 2 Top of Section Depth(m): 567.00
LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;
Piece No. : PCES 1 (0-13), 2 (16-22), 3A (23-31), 3B (31-41),
4A (42-48), 4B (50-57), 5 (58-68), 6 (70-84),
7 (85-96), 8 (98-104), 9 (106-110), 10A (112-117),
10B (118-122), 11 (123-130), 12 (132-136),
13 (139-145);
Texture : 0-15CM IS ALTERED SERPENTINIZED OPX-GABBRO, 15-23CM
IS POLYMICT BRECCIA WITH CLASTS OF GABBRO AND OPX-
GABBRO, 23-40CM IS SERPENTINIZED OPX-GABBRO WITH CA
15% OPX, 40-56CM IS POLYMICT BRECCIA WITH OPX-GABBRO
AND OPX AND GABBRO CLASTS ARE 3CM-3MM IN RANGE, 56-
70CM IS SERPENTINIZED OPX-GABBRO, 70-111CM IS
POLYMICT BRECCIA, 111-145 IS SERPENTINIZED OPX-
GABBRO;
Alteration : MOD
0-40CM IS MOD ALTERED, OPX IS BROWN(ALTERED);
EXT
40-END OF CORE;
Phenocrysts: ORTHOPYROXENE
Replacement: SERPENTINITE
Leg : 82 Top/Bottom Interval(mm): 0/ 290 Analyst: Brannon, J.
Hole: 556 Sample Midpoint (m) : 568.79
Core: 14 Top of Core Depth (m) : 565.50
Sect: 3 Top of Section Depth(m): 568.50
LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;
Piece No. : PCES 1 (0-16), 2 (16-29);
Texture : POLYMICT BRECCIA-MATRIX IS NOT CARB, THE ROCK IS SO
FRIABLE THAT THE CLASTS(SERPENT-CPX-GABBRO) AND THE
MATRIX ARE DISSOCIATED;
Alteration : EXT
PCE(1);
MOD
PCE(2);
Leg : 82 Top/Bottom Interval(mm): 0/ 450 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 574.95
Core: 15 Top of Core Depth (m) : 574.50
Sect: 1 Top of Section Depth(m): 574.50
LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;
SIMILAR TO 14-2 AND 14-3;
Piece No. : PCES 1A (0-10), 1B (10-22), 1C (22-31), 2 (32-36),
3 (38-45), 4 (45-54), 5A (55-63), 5B (64-75),
5C (73-75), 5D (75-86), 5E (86-93), 5F (94-102),
5G (102-106), 5H (105-112), 5I (112-115),
5J (115-121), 5K (122-124), 5L (124-145);
Texture : CLASTS OF OPX-GABBRO WITH 10% RED-BROWN(7.5YR5/6)
OPX 1-5MM AND PLAG AND <1% DARK GREEN(5G3) CPX(?),
0-15CM AND 30-53CM IS POLYMICT BRECCIA(15-30CM,
53-90CM, 90-140CM) ARE OPX GABBRO WITH SOME BRECCIA;
Alteration : MOD ALTERED;
Leg : 82 Top/Bottom Interval(mm): 0/1460 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 577.46
Core: 15 Top of Core Depth (m) : 574.50
Sect: 2 Top of Section Depth(m): 576.00
LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;
Piece No. : PCES 1A (0-6), 1B (4-9), 2A (10-19), 2B (18-30),
3A (30-39), 3B (40-49), 4 (51-62), 5 (69-73),
6A (75-87), 6B (87-96), 7 (97-100), 8A (102-108),
8B (105-120), 9 (121-127), 10 (128-134),
11A (136-137), 11B (138-139), 12 (142-146);
Texture : (0-30CM) IS SERPENTINIZED CPX-GABBRO WITH ALTERED
BROWN PYX, PCES(3A,4-8A) ARE POLYMICT BRECCIA WITH
CLASTS OF CPX-GABBRO(SERPENTINIZED) CONTAINING
ALTERED(PCES 5,3A) AND REGULAR BROWN PYX, PCE(8B)
SAME AS (0-30CM) EXCEPT AMOUNT OF SERPENTINE IS
INCREASING, PCE(9) IS POLYMICT BRECCIA WITH SMALL
CLASTS OF PERIDOTITE, PCE(10) IS SAME AS FOR 0-30CM
EXCEPT HIGHLY SERPENTINIZED RIM, PCES(11,12) ARE
POLYMICT BRECCIA WITH CLASTS OF OPX GABBRO;
Structure : CALCITE VEINS INFILTRATE ALTERED BROWN PYX IN
0-30CM;
Alteration : MOD-FRESH
PCES(1B-8A) ARE MOD ALTERED AND PCES(1A,5,8B-END)
ARE FRESH;
Replacement: CALCITE
SERPENTINITE
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 579.00
Core: 15 Top of Core Depth (m) : 574.50
Sect: 3 Top of Section Depth(m): 577.50
LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;
Piece No. : PCES 1 (0-10), 2A (12-25), 2B (25-41), 2C (42-53),
2D (55-58), 3(60-67), 4A (69-78), 4B (80-84),
5 (85-90), 6 (90-97), 7A (99-101), 7B (100-102),
7C (102-114), 7D (116-119), 8A (120-140),
9A (141-147), 9B (148-150);
Texture : PCE(1) IS POLYMICT OPX-GABBRO BRECCIA, OPX-GABBRO
CLASTS CONTAIN LARGE OPX XSTLS, SOME CLASTS ARE
SERPENTINIZED(DARK GREEN COLOR) AND THE MATRIX OF
BRECCIA IS SERPENTINE TOO, PCE(2) IS SIMILAR TO
PCE(1) BUT IT IS VERY FRESH AND MASSIVE, 60-103CM IS
SIMILAR TO PCE(1) BUT ALL OPX ARE ALTERED AND BROWN
COLORED, 103-150CM IS OPX-GABBRO;
Alteration : MOD
PCES(1,2D-7B,7D-9);
FRESH
PCES(2,7C,8A(124-134);
Comments : GREY;
Phenocrysts: ORTHOPYROXENE
Replacement: SERPENTINITE
Leg : 82 Top/Bottom Interval(mm): 0/ 450 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 579.45
Core: 15 Top of Core Depth (m) : 574.50
Sect: 4 Top of Section Depth(m): 579.00
LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;
Piece No. : PCES 1 (0-10), 2A (12-20), 2B (20-25), 2C (25-31),
2D (32-35), 3A (37-45);
Texture : CPX-GABBRO CONTAINING LARGE OPX(<1CM), UPPER EDGE OF
PCE(3A) HAS YELLOW-GREENISH BRECCIATED CPX-GABBRO
WITH SERPENTINE MATRIX;
Alteration : FRESH TO MOD
PCES(1,2A,3A) ARE MOD ALTERED;
Comments : DARK GREY
Phenocrysts: ORTHOPYROXENE
Replacement: SERPENTINITE
Leg : 82 Top/Bottom Interval(mm): 0/1470 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 584.97
Core: 16 Top of Core Depth (m) : 583.50
Sect: 1 Top of Section Depth(m): 583.50
LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;
Piece No. : PCES 1 (0-5), 2 (6-8), 3A (14-23), 3B (14-37),
3C (37-43), 3D (42-53), 3E (54-73), 3F (74-77),
3G (73-85), 3H (85-101), 3I (101-112), 3J (113-120),
3K (120-137);
Texture : (0-10CM) HAS COARSE WHITE PLAG WITH MINOR(?) OPX,
40-95CM IS AN OPX-GABBRO BRECCIA WITH ANGULAR OPX
GABBRO AND MINOR GABBRO(CA 1CM) CLASTS IN A
NONDESCRIPT GREENISH BROWN(5Y6/3) MATRIX;
Structure : (0-10CM) HAS AN ANORTHOSITE(?) VEIN;
Alteration : MOD
(0-95CM, 105-150CM) ARE MOD ALTERED, CPX TURNS
BROWN AND FRESH OPX-GABBRO BECOMES ALTERED AT
LOWER END OF FRESH OPX-GABBRO(15-40CM);
Leg : 82 Top/Bottom Interval(mm): 0/ 750 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 585.75
Core: 16 Top of Core Depth (m) : 583.50
Sect: 2 Top of Section Depth(m): 585.00
LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;
Piece No. : PCES 1 (0-18), 2 (20-21), 3 (23-26), 4 (30-39),
5 (41-45), 6 (46-50), 7 (50-65), 8 (67-75);
Texture : (0-3CM) POLYMICT BRECCIA WITH SERPENTINIZED CLASTS
WITH ALTERED BROWN PYX, (3-75CM) HAS LARGE PHENOS OF
BROWN(ALTERED ?) PYX(<4MM), PCE(8) IS OPX-GABBRO
WITH ALTERED BROWN PYX AND SURFACE IS IMPREGNATED
WITH DARK RED CLAY(10R4/8);
Alteration : MOD
(0-3CM) CLASTS ARE ALTERED, 3-75CM MOD ALTERED AND
THERE IS ALSO PRESENCE OF DARK RED CLAY ALTERATION
PRODUCT AS WELL AS IN PCE(8), PCE(8) IS HIGHLY
ALTERED;
Comments : MAJOR UNIT BREAK WITH A RATHER SHARP AND SUDDEN
TRANSITION AFTER PCE(8);
Phenocrysts: PYROXENE
Size(mm): <4
Replacement: CLAY
DARK RED CLAY ALTERATION PRODUCT(10R4/8) OCCURRING
IN 3-75CM;
Leg : 82 Top/Bottom Interval(mm): 750/1460 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 586.46
Core: 16 Top of Core Depth (m) : 583.50
Sect: 2 Top of Section Depth(m): 585.75
LITHOLOGY: OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 9 (76-84), 10 (84-91), 11 (94-101),
12 (102-107), 13 (109-115), 14 (116-127),
15 (129-146);
Texture : OL SPARSELY PHYRIC;
Alteration : MOD-EXT
Comments : MAJOR UNIT BREAK AT 75CM, LIGHT GREY COLOR(10YRN6/2)
ALTERATION IS LIGHT BROWN IN COLOR(10YRN6/4),
TRANSITION IS RATHER SHARP AND SUDDEN OCCURRING
IMMEDIATELY AFTER PCE(8);
Leg : 82 Top/Bottom Interval(mm): 0/ 110 Analyst: Rideout, M.
Hole: 556 Sample Midpoint (m) : 586.61
Core: 16 Top of Core Depth (m) : 583.50
Sect: 3 Top of Section Depth(m): 586.50
LITHOLOGY: OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (0-7), 2 (7-11);
Texture : OL SLIGHTLY PHYRIC, SOME SMALL PLAG PHENOS ARE ALSO
PRESENT;
Alteration : MOD TO FRESH
OL ALTERED AND DISCOLORED;
Comments : COLOR OF BASALT(10YRN6/2);
Phenocrysts: OLIVINE
Size(mm): <1
OLIVINES ARE ALTERED AND DISCOLORED;
PLAGIOCLASE
SOME SMALLER PHENOS PRESENT;
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 593.95
Core: 17 Top of Core Depth (m) : 592.50
Sect: 1 Top of Section Depth(m): 592.50
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
Piece No. : PCES 1 (0-6), 2 (7-12), 3 (15-20), 4 (22-25),
5 (27-35), 6 (36-43), 7 (45-51), 8 (52-58),
9 (60-64), 10 (66-70), 11 (72-78), 12 (80-87),
13 (89-96), 14 (99-103), 15 (105-114), 16 (116-120),
17 (122-130), 18 (132-140), 19 (142-145);
Texture : OPX GABBRO, BRECCIA MATRIX IN PCES(6,8,9)-SAME AS
CORE 16;
Structure : ANORTHOSITE VEINS AT 10-20CM;
Alteration : MOD
Comments : SIMILAR TO CORE 16;
Leg : 82 Top/Bottom Interval(mm): 0/1460 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 595.46
Core: 17 Top of Core Depth (m) : 592.50
Sect: 2 Top of Section Depth(m): 594.00
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
SAME AS 17-1;
Piece No. : PCES 1 (1-9), 2 (11-19), 3 (20-31), 4 (33-38),
5 (43-47), 6 (49-56), 7 (58-61), 8 (63-66),
9 (68-74), 10 (76-81), 11 (83-86), 12 (89-92),
13 (95-97), 14 (100-104), 15 (106-113),
16 (114-127), 17 (130-140), 18 (141-146);
Texture : OPX-GABBRO BRECCIA;
Alteration : MOD;
Leg : 82 Top/Bottom Interval(mm): 0/ 220 Analyst: Christie, D.M.
Hole: 556 Sample Midpoint (m) : 595.72
Core: 17 Top of Core Depth (m) : 592.50
Sect: 3 Top of Section Depth(m): 595.50
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
SAME AS 17-1;
Piece No. : PCES 1 (0-2), 2 (5-22);
Texture : CPX GABBRO CLAST;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 603.00
Core: 18 Top of Core Depth (m) : 601.50
Sect: 1 Top of Section Depth(m): 601.50
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
Piece No. : PCES 1 (0-5), 2 (6-16), 3 (16-27), 4 (30-34),
5 (35-41), 6A (42-53), 6B (53-59), 7 (60-64),
8 (65-72), 9 (74-80), 10 (81-90), 11 (91-97),
12 (100-104), 13 (105-110), 14 (111-115),
15 (115-123), 16 (124-132), 17 (133-137),
18 (139-145), 19 (145-150);
Alteration : MOD;
Comments : SAME AS 17-1 TO 17-3;
Leg : 82 Top/Bottom Interval(mm): 0/1400 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 611.90
Core: 19 Top of Core Depth (m) : 610.50
Sect: 1 Top of Section Depth(m): 610.50
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
Piece No. : PCES 1 (0-6), 2 (6-11), 3A (12-16), 3B (18-21),
4A (24-31), 4B (31-34), 4C (34-37), 5A (39-47),
5B (48-52), 6 (54-63), 7A (64-67), 7B (67-70),
8 (70-80), 9 (82-86), 10 (87-93), 11A (95-102),
11B (97-102), 12A (103-110), 12B (110-120),
12C (120-133), 12D (133-140);
Texture : BRECCIA, 0-15CM IS BRECCIA IN GABBRO CLASTS, 15-23CM
IS SERPENTINIZED GABBRO BRECCIA IN GABBRO CLASTS,
53-62CM IS SERP GABBRO BRECCIA, 62-69CM IS SERP-OPX
GABBRO, 67-79CM IS MOD ALTERED CPX GABBRO, 79-86CM
IS SERP-OPX GABBRO, 86-93CM IS GABBRO AND BRECCIA
RUBBLE, 93-138CM IS BRECCIA WITH PREDOMINANTLY
ANORTHOSITE CLASTS AND DARK GREEN(5G3/2) CHLORITE(?)
RICH MATRIX;
Alteration : MOD TO EXTENSIVE
MOD ALTERED(0-23, 53-62, 69-79), REST IS HIGHLY
ALTERED, 86-138CM HAS DARK RED BROWN(10R3/4)
ALTERATRION;
Replacement: SERPENTINITE
Leg : 82 Top/Bottom Interval(mm): 0/ 320 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 612.32
Core: 19 Top of Core Depth (m) : 610.50
Sect: 2 Top of Section Depth(m): 612.00
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
SAME AS 19-1 (93-138CM);
Piece No. : PCES 1 (0-6), 2A (6-9), 2B (9-12), 3A (14-17),
3B (15-31);
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 621.00
Core: 20 Top of Core Depth (m) : 619.50
Sect: 1 Top of Section Depth(m): 619.50
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
Piece No. : PCES 1 (1-7), 2A (8-17), 2B (19-27), 2C (20-24),
3A (28-35), 3B (35-38), 3C (40-42), 4A (43-57),
5A (60-64), 5B (64-66), 5C (65-67), 5D (70-77),
6A (79-84), 6B (84-91), 6C (90-99), 7A (100-106),
7B (106-109), 7C (108-111), 7D (112-115),
8A (116-120), 8B (121-124), 8C (124-133),
9A (133-140), 9B (140-150);
Texture : PREDOMINANTLY SERP-GABBRO BRECCIA, LARGE AMOUNT OF
MATRIX IS GREEN TALC AND OPX IS VERY COMMON(15-20%);
Alteration : EXT
HIGHLY ALTERED;
Comments : IN PCE(9) TALC IS DARK GREEN AND PREDOMINANT;
Phenocrysts: ORTHOPYROXENE (15-20%)
Replacement: SERPENTINITE
Leg : 82 Top/Bottom Interval(mm): 0/ 560 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 621.56
Core: 20 Top of Core Depth (m) : 619.50
Sect: 2 Top of Section Depth(m): 621.00
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
MASSIVE;
Piece No. : PCES 1A (0-24), 1B (24-33), 2A (34-38), 2B (38-56);
Texture : SERP-GABBRO BRECCIA WITH LARGE OPX, BRECCIATION
OCCURS BETWEEN 50-56CM;
Structure : MASSIVE, UPPER AND LOWER PARTS HIGHLY FRACTURED WITH
VEINS FILLED WITH CALCITE;
Alteration : MOD
Comments : DARK GREY-GREENISH;
Replacement: CALCITE
SERPENTINITE
Leg : 82 Top/Bottom Interval(mm): 560/1050 Analyst: Neuser, R.
Hole: 556 Sample Midpoint (m) : 622.05
Core: 20 Top of Core Depth (m) : 619.50
Sect: 2 Top of Section Depth(m): 621.56
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
CONTINUATION OF BRECCIATION;
Piece No. : PCES 3 (60-65), 4 (66-75), 5A (76-77), 5B (78-82),
5C (84-86), 6 (89-92), 7 (96-100), 8 (100-105);
Texture : BRECCIA IS CEMENTED BY CALCITE;
Replacement: CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 630.00
Core: 21 Top of Core Depth (m) : 628.50
Sect: 1 Top of Section Depth(m): 628.50
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
Piece No. : PCES 1A (0-6), 1B (5-6), 2 (7-12), 3 (15-18),
4 (21-26), 5A (27-35), 5B (30-51), 6A (52-68),
6B (64-71), 7 (72-80), 8 (81-85), 9 (87-150);
Texture : PCES(1A-3) ARE SERP-GABBRO, 20-87CM IS SERP-GABBRO
BRECCIA WITH GABBRO AND ANORTHOSITE CLASTS WITH TALC
RIMS IN A TALC RICH MATRIX, 87-150CM IS FOLIATED
SERP BRECCIA WITH CLASTS OF DARK GREEN-BLACK SERP
(5Y2.5/2) GABBRO IN A SERP MATRIX OF SMALL ANGULAR
GABBRO FRAGMENTS AND NONDESCRIPT LIGHT GREY-GREEN
(5G5/2) MATERIAL;
Leg : 82 Top/Bottom Interval(mm): 0/ 840 Analyst: Brannon, J.
Hole: 556 Sample Midpoint (m) : 630.84
Core: 21 Top of Core Depth (m) : 628.50
Sect: 2 Top of Section Depth(m): 630.00
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
Piece No. : PCES 1A (0-22), 1B (21-34), 1C (34-50), 1D (50-60),
2 (60-70), 3 (70-80), 4 (79-84);
Texture : SERP BRECCIA WITH CLASTS OF GABBRO(WHICH CONTAINS
OPX AND PLAG);
Structure : VEINS OF CALCITE RUN BETWEEN THE CLASTS;
Alteration : EXT;
Comments : SERP APPEARS TO HAVE TAKEN PLACE BEFORE FORMATION
OF BRECCIA SINCE CLAST FABRIC ARE DIFFERENT, 70-80CM
TALC IS PRESENT;
Replacement: SERPENTINITE
Leg : 82 Top/Bottom Interval(mm): 0/ 620 Analyst: Drake, N.
Hole: 556 Sample Midpoint (m) : 638.12
Core: 22 Top of Core Depth (m) : 637.50
Sect: 1 Top of Section Depth(m): 637.50
LITHOLOGY: TALC-SERPENTINE GABBRO BRECCIA;
Piece No. : PCES 1 (0-4), 2A (5-16), 2B (16-21), 2C (22-33),
2D (34-44), 2E (44-51), 2F (52-55), 2G (55-62);
Texture : FOLIATED SERP-GABBRO PARTLY BRECCIATED(SIMILAR TO
21-1,87-150CM), PCE(2) HAS CLASTS OF DARK GREEN-
BLACK(5G2/1) SERP GABBRO IN SERP MATRIX OF SMALL
ANGULAR CLASTS OF GABBRO AND NONDESCRIPT LIGHT GREY
GREEN (5G6/1) MATERIAL;
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