Leg : 58 Top/Bottom Interval(mm): 0/ 800 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 382.30
Core: 2 Top of Core Depth (m) : 381.50
Sect: 1 Top of Section Depth(m): 381.50
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 800/1480 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 382.98
Core: 2 Top of Core Depth (m) : 381.50
Sect: 1 Top of Section Depth(m): 382.30
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (81-87), 2 (90-93), 3 (95-101), 4 (103-109),
5 (111-119), 6 (121-130), 7 (133-137), 8 (140-148);
Texture : APHYRIC, FINE-GRAINED, PCE 1 SHOWS GLASSY MARGIN AND
CHILL ZONE 1CM THICK, PCE 5 IS SLIGHTLY FINER
GRAINED;
Structure : PCE 5 PARTIALLY COVERED BY CARB-CLAY VEIN MATERIAL
ALSO ON ONE SIDE OF PCE 7;
Alteration : SLIGHTLY;
Comments : BASALT IS GRAY COLOR;
Vesicles : Size(mm): <1 Percent: 5-10
Size(mm): 1-10 Percent: 2-10
LINED BY PYRITE + CALCITE AND ZEOLITES, SOME
LARGER VESICLES ARE PIPE VESICLES;
Replacement: PYRITE
CALCITE
ZEOLITE
ABOVE THREE LINE VESICLES;
CARBONATE
CLAY
BOTH COVER PCE 5;
Leg : 58 Top/Bottom Interval(mm): 0/1160 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 384.16
Core: 2 Top of Core Depth (m) : 381.50
Sect: 2 Top of Section Depth(m): 383.00
LITHOLOGY: APHYRIC BASALT;
PCE 1 (2-7), 2 (10-13), 3 (17-20), 4 (22-28),
Piece No. : 5 (32-36), 6 (38-44), 7 (46-52), 8 (53-61),
9A (63-69), 9B (66-70), 10 (72-78), 11 (80-87),
12 (90-94), 13 (97-102), 14 (103-109), 15 (112-114);
Texture : APHYRIC, FINE-GRAINED, PCE 15 HAS A CHILL ZONE AND
GLASSY MARGIN;
Alteration : FRESH;
Comments : BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): <1 Percent: 5-15
Size(mm): 1-5 Percent: 2-15
LINED BY CARBONATE + PYRITE + ZEOLITES AND
OCCASIONALLY A WHITISH-GREEN CLAY (SMEC);
Groundmass : PLAGIOCLASE
FINE LATHS OF PLAG ARE VISIBLE IN HAND SPECIMEN
AND UNDER BINOCULAR MICROSCOPE A PLATY BROWN
MATERIAL;
Replacement: CARBONATE
PYRITE
ZEOLITE
SMECTITE
FOUND LINING VESICLES;
Leg : 58 Top/Bottom Interval(mm): 1160/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 384.50
Core: 2 Top of Core Depth (m) : 381.50
Sect: 2 Top of Section Depth(m): 384.16
LITHOLOGY: APHANITIC BASALT;
Piece No. : PCE 16 (118-122), 17 (123-126), 18 (129-134),
19 (136-139), 20 (143-148);
Texture : APHANITIC, MANY GLASSY ZONES AND CHILL MARGINS;
Structure : MANY SEDIMENT INFILLED FRACTURES (SUGGESTS
SUB-SEDIMENT PILLOWS), SOME CARBONATE VEINS;
Alteration : FRESH;
Comments : BASALT IS GRAY COLOR;
Vesicles : Size(mm): <1 Percent: 1
PYRITE + CARB LINING;
Phenocrysts: PLAGIOCLASE
ODD PHENOS;
Replacement: CARBONATE
FOUND IN VEINS AND LINING VESICLES;
PYRITE
FOUND LINING VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 210 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 384.71
Core: 2 Top of Core Depth (m) : 381.50
Sect: 3 Top of Section Depth(m): 384.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-7), 2 (11-14);
Texture : APHYRIC;
Alteration : FRESH;
Comments : BASALT IS GRAY COLOR;
Vesicles : Size(mm): Percent: 25
Location: Filling: CALCITE
Replacement: CALCITE
A LITTLE IN SOME VESICLES;
Leg : 58 Top/Bottom Interval(mm): 230/ 280 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 384.78
Core: 2 Top of Core Depth (m) : 381.50
Sect: 3 Top of Section Depth(m): 384.73
LITHOLOGY: SEDIMENT;
2 LUMPS OF HARD INDURATED BAKED SEDIMENT-GREEN
GLAUCONITE;
Piece No. : PCE 4 (23-28);
Leg : 58 Top/Bottom Interval(mm): 300/ 360 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 384.86
Core: 2 Top of Core Depth (m) : 381.50
Sect: 3 Top of Section Depth(m): 384.80
LITHOLOGY: GLASSY CHILL ZONE;
Piece No. : PCE 4 (30-35);
Texture : GLASSY CHILL ZONE;
Structure : VEINS CRISS-CROSSING CHILL MARGIN;
Alteration : FRESH;
Comments : BAKED ASH ON CONTACT AND FILLING VEINS;
Leg : 58 Top/Bottom Interval(mm): 360/ 450 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 384.95
Core: 2 Top of Core Depth (m) : 381.50
Sect: 3 Top of Section Depth(m): 384.86
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 5 (37-43);
Texture : APHYRIC;
Structure : MAY BE PILLOWS BUT BAKED SEDIMENT SUGGESTS INTRUSION
UNDER SEDIMENT COVER;
Alteration : FRESH;
Vesicles : Size(mm): .1-.5 Percent: 10
Location: Filling: CALCITE
IN UPPER HALF PARTIALLY FILLED, 3-4 VUGS UP TO 5MM
IN LOWER HALF HAVE CALCITE CRYSTALS IN CAVITITES;
Replacement: CALCITE
FOUND IN VESICLES AND VUGS;
Leg : 58 Top/Bottom Interval(mm): 0/ 300 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 394.30
Core: 3 Top of Core Depth (m) : 391.00
Sect: 3 Top of Section Depth(m): 394.00
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 300/1470 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 395.47
Core: 3 Top of Core Depth (m) : 391.00
Sect: 3 Top of Section Depth(m): 394.30
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (33-38), 2 (41-45), 3A (47-54), 3B (52-58),
3C (58-66), 4 (69-71), 5 (74-81), 6 (82-98),
7 (100-106), 8 (108-119), 9 (121-130), 10 (132-146);
Texture : APHYRIC, FINE TO MEDIUM-GRAINED, NO PHENOS;
Structure : A FEW VEINS FILLED WITH CLAY/CHLORITE + PYRRHOTITE
OR PYRITE;
Alteration : FRESH;
Vesicles : Size(mm): .5-.7 3 Percent: -10
Location: CL Filling: AY,CALC,PYRRHOT
50% OF VESICLES ARE FILLED;
Replacement: CLAY
FILLS VESICLES AND VEINS;
PYRITE
FILLS VEINS;
PYRRHOTITE
FILLS VESICLES AND VEINS;
CALCITE
FILLS VESICLES;
CHLORITE
FILLS VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/ 350 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 395.85
Core: 3 Top of Core Depth (m) : 391.00
Sect: 4 Top of Section Depth(m): 395.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-15), 2 (17-34);
Texture : APHYRIC;
Structure : MASSIVE, 1% AMYGDULES FILLED WITH CALCITE + CLAY;
Alteration : SLIGHTLY;
Comments : BASALT IS GRAY COLOR;
Leg : 58 Top/Bottom Interval(mm): 0/1460 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 401.96
Core: 4 Top of Core Depth (m) : 400.50
Sect: 1 Top of Section Depth(m): 400.50
LITHOLOGY: APHYRIC BASALT;
Replacement: CLAY
PYRITE
BOTH FOUND IN AMYGDULES AND VEINS;
CALCITE
FOUND IN AMYGDULES;
CARBONATE
QUARTZ
BOTH FOUND IN VEINS;
ZEOLITE
MAY BE PRESENT IN VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 403.50
Core: 4 Top of Core Depth (m) : 400.50
Sect: 2 Top of Section Depth(m): 402.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-12), 2 (14-24), 3A (26-32), 3B (30-38),
4 (40-54), 5A (56-69), 5B (69-76), 5C (76-80),
6 (82-88), 7 (90-92), 8 (93-96), 9 (98-101),
10 (102-105), 11 (106-111), 12 (111-115),
13A (116-132), 13B (132-150);
Texture : APHYRIC, FINE-GRAINED;
Structure : MASSIVE, 0-3% CLAY-FILLED AMYGDULES, PYRITE
VEIN FRAGMENT ADHERING TO SAMPLE 5B;
Alteration : FRESH;
Replacement: CLAY
FILLS AMYGDULES;
PYRITE
VEIN FRAGMENT;
Leg : 58 Top/Bottom Interval(mm): 0/ 750 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 404.25
Core: 4 Top of Core Depth (m) : 400.50
Sect: 3 Top of Section Depth(m): 403.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-12), 2A (13-20), 2B (20-35), 2C (36-55),
2D (56-64), 2E (64-74);
Texture : APHYRIC, FINE-GRAINED;
Structure : FEW CLAY + CARB-FILLED VEINS;
Alteration : FRESH;
Comments : BASALT IS GRAY COLOR;
Vesicles : Size(mm): Percent: 1-2
Location: Filling: CLAY
Replacement: CLAY
CARBONATE
BOTH FILL VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/1420 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 406.92
Core: 5 Top of Core Depth (m) : 405.50
Sect: 1 Top of Section Depth(m): 405.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-41), 1B (41-47), 2 (49-59), 3A (61-71),
3B (71-78), 4 (80-88), 5A (90-97), 5B (97-106),
6 (108-111), 7 (116-124), 8 (126-133), 9 (135-141);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY;
Comments : BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): Percent: <1
Location: Filling: CLAY
ALSO FILLED WITH AGGREGATES OF DARK MINERALS;
Replacement: CLAY
FILLS VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 408.50
Core: 5 Top of Core Depth (m) : 405.50
Sect: 2 Top of Section Depth(m): 407.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-10), 2 (12-17), 3A (20-31), 3B (32-38),
4 (40-43), 5A (45-53), 5B (53-63), 6 (64-67),
7 (70-73), 8A (76-87), 8B (88-97), 9A (100-114),
9B (114-121), 9C (122-133), 9D (129-136),
10 (138-142), 11 (144-150);
Texture : APHYRIC, COARSER-GRAINED THEN SECTION 1;
Structure : BETWEEN PCES 9C AND 9D CHLORITE VEIN OCCURS WITH
PYRITE;
Alteration : SLIGHTLY;
Comments : BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): Percent: <1
Location: Filling: CALCITE
ALSO FILLED WITH AGGREGATE OF DARK MINERALS;
Replacement: CALCITE
FILLS VESICLES;
CHLORITE
PYRITE
ABOVE 2 FOUND IN VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/ 400 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 408.90
Core: 5 Top of Core Depth (m) : 405.50
Sect: 3 Top of Section Depth(m): 408.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-5), 2 (7-18), 3 (21-24), 4 (26-32),
5 (34-39);
Texture : APHYRIC, MORE COARSE-GRAINED THAN SECTION 1;
Alteration : SLIGHTLY;
Comments : BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): <1 Percent: <1
Location: Filling: CALCITE
CALCITE AND A DARK MINERAL FILL AMYGDULES;
Replacement: CALCITE
FILLS VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1420 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 411.42
Core: 6 Top of Core Depth (m) : 410.00
Sect: 1 Top of Section Depth(m): 410.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-24), 1B (24-32), 1C (33-40), 1D (41-50),
2A (52-57), 2B (57-64), 2C (63-79), 2D (80-87),
2E (87-89), 2F (89-100), 2G (101-110), 2H (111-123),
3A (125-134), 3B (134-143);
Texture : APHYRIC, FINE-GRAINED, INTERVAL 0-20CM BASALT IS
COARSER-GRAINED;
Alteration : SLIGHTLY;
Comments : BASALT IS DARK GRAY;
Vesicles : Size(mm): <2 Percent: <1
Location: Filling: CALC,CHLORITE
Replacement: CALCITE
CHLORITE
BOTH FILL VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 780 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 412.28
Core: 6 Top of Core Depth (m) : 410.00
Sect: 2 Top of Section Depth(m): 411.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-12), 1B (12-17), 1C (17-23), 2 (29-31),
3A (33-45), 3B (45-53), 4A (55-72), 4B (72-76);
Texture : APHYRIC, FINE-GRAINED;
Structure : PCE 1C+3B+4A+4B CONTAIN VEINS;
Alteration : SLIGHTLY;
Comments : BASALT IS DARK GRAY;
Vesicles : Size(mm): <2 Percent: <1
Location: Filling: CALC,CHLORITE
Replacement: CALCITE
CHLORITE
BOTH FILL VESICLES AND VEINS;
PYRITE
FILLS VEINS;
Leg : 58 Top/Bottom Interval(mm): 780/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 413.00
Core: 6 Top of Core Depth (m) : 410.00
Sect: 2 Top of Section Depth(m): 412.28
LITHOLOGY: APHANITIC BASALT;
Piece No. : PCE 5A (78-91), 5B (91-98), 6 (100-107),
7 (109-114), 8A (116-125), 8B (125-129),
9 (130-142), 10 (145-150);
Texture : 78-90CM IS A CHILL ZONE OF BASALT, APHANITIC;
Structure : VEINS IN PCES 5B AND 9;
Alteration : SLIGHTLY;
Comments : NEXT LAVA FLOW;
DARK GRAY COLOR;
Vesicles : Size(mm): <2 Percent: 1
Location: Filling: CALC,CHLORITE
ALSO FILLED WITH PYRITE;
Replacement: CALCITE
CHLORITE
PYRITE
FILLS VESICLES AND VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/ 150 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 413.15
Core: 6 Top of Core Depth (m) : 410.00
Sect: 3 Top of Section Depth(m): 413.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-3), 2 (5-10), 3 (11-15);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY;
Comments : DARK GRAY COLOR;
Vesicles : Size(mm): <2 Percent: 1
Location: Filling: CALCITE,CHLORITE
Replacement: CALCITE
CHLORITE
BOTH FILL VESICLES;
Leg : 58 Top/Bottom Interval(mm): 150/ 260 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 413.26
Core: 6 Top of Core Depth (m) : 410.00
Sect: 3 Top of Section Depth(m): 413.15
LITHOLOGY: SEDIMENTARY ROCK;
Piece No. : PCE 4 (17-20), PCE 5 (22-25);
Alteration : SLIGHTLY;
Leg : 58 Top/Bottom Interval(mm): 270/1420 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 414.42
Core: 6 Top of Core Depth (m) : 410.00
Sect: 3 Top of Section Depth(m): 413.27
LITHOLOGY: PLAG MODERATELY PHYRIC BASALT;
Piece No. : PCE 6 (27-39), 7A (41-47), 7B (47-54), 7D (55-66),
7E (67-77), 8A (78-80), 8B (78-93), 8C (87-92),
8D (92-97), 8E (98-104), 8F (98-127), 8G (127-142);
Texture : MODERATELY PHYRIC, FINE-GRAINED (27-40CM) TO
APHANITIC;
Structure : PCES 7B + 7D + 8A-8G CONTAIN CALCITE VEIN WITH
CHLORITE AND PYRITE;
Alteration : SLIGHTLY;
Comments : BASALT IS DARK GRAY COLOR;
NEXT LAVA FLOW;
Vesicles : Size(mm): <3 Percent: 3-5
Location: Filling: CALC,CHLORITE
INTERVAL 27-54CM, ALSO FILLED WITH PYRITE, ONE
VESICLE UP TO 5MM;
Size(mm): <2 Percent: 1
Location: Filling: CALC,CHLORITE
INTERVAL 54-142CM, ALSO FILLED WITH PYRITE;
Phenocrysts: PLAGIOCLASE ( 5%)
Size(mm): 2-5
Replacement: CALCITE
CHLORITE
PYRITE
FILL VESICLES AND VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/ 470 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 414.97
Core: 6 Top of Core Depth (m) : 410.00
Sect: 4 Top of Section Depth(m): 414.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1A (2-16), 1B (17-28), 2 (30-34), 3 (36-40),
4 (43-46);
Texture : MOD PHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY;
Comments : BASALT IS DARK GRAY;
Vesicles : Size(mm): Percent: <1
Location: Filling: CHLORITE
Replacement: CHLORITE
FILLS VESICLES;
Phenocrysts: PLAGIOCLASE ( 5%)
Size(mm): 2
Leg : 58 Top/Bottom Interval(mm): 0/1450 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 420.95
Core: 7 Top of Core Depth (m) : 419.50
Sect: 1 Top of Section Depth(m): 419.50
LITHOLOGY: PLAG OL MOD PHYRIC BASALT;
Piece No. : PCE 1A (0-10), 1B (10-20), 1C (18-30), 1D (29-40),
1E (40-50), 1F (50-60), 1G (60-70), 1H (70-78),
2A (80-90), 2B (90-97), 3 (98-102), 4A (104-110),
4B (109-116), 5 (117-121), 6 (123-126),
7A (128-136), 7B (135-144);
Texture : MOD PHYRIC, FINE-GRAINED;
Structure : MASSIVE, PCES 1-3 CONTAIN CHLORITIC VEIN AND
FRACTURES LINED WITH PYRITE;
Alteration : SLIGHTLY;
Comments : GRAY BASALT;
Vesicles : Size(mm): 0.5-1 Percent: 3
Location: Filling: CARB,ZEOLITES
ALSO FILLED OR LINED BY DARK CLAY MATERIAL;
Size(mm): 0.5-2 Percent: 5
PCE 7A;
Phenocrysts: PLAGIOCLASE ( 3%)
Size(mm): 2-4
OLIVINE
Size(mm): 1
ODD OL PHENO, ID UNCERTAIN FOR OL;
PYROXENE
Size(mm): 1-2
ODD PYX PHENO - DARK ACICULAR;
Replacement: CARBONATE
CLAY
ZEOLITE
ABOVE 3 FOUND LINING OR FILLING VESICLES;
CHLORITE
PYRITE
FOUND IN VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/1460 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 422.46
Core: 7 Top of Core Depth (m) : 419.50
Sect: 2 Top of Section Depth(m): 421.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1 (1-11), 2A (13-31), 2B (31-34), 2C (35-46),
2D (46-54), 2E (55-62), 3A (64-69), 3B (70-88),
3C (88-98), 4 (101-111), 5 (113-141);
Texture : MOD PHYRIC, FINE-GRAINED;
Structure : MASSIVE, VEINS AND FRACTURES LINED BY CLAY-CHLORITE
MATERIAL AND WEATHERED PYRITE OF CHALCOPYRITE;
Alteration : SLIGHTLY;
Comments : GRAY BASALT;
Vesicles : Size(mm): 0.5-2 Percent: 2-6
Location: Filling: CLAY,CARB,ZEOLITE
SOME CLAYEY ALTERATION ZONES AROUND SOME LARGER
VESICLES;
Size(mm): <4 Percent: 6
55-75CM MORE LARGE VESICLES;
Phenocrysts: PLAGIOCLASE ( 5%)
Size(mm): 2-4
Replacement: CLAY
DARK;
ZEOLITE
CARBONATE
ABOVE 3 FILL VESICLES;
CLAY
CHLORITE
PYRITE
CHALCOPYRITE
ABOVE 4 FILL VEINS AND FRACTURES;
Leg : 58 Top/Bottom Interval(mm): 0/1490 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 423.99
Core: 7 Top of Core Depth (m) : 419.50
Sect: 3 Top of Section Depth(m): 422.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1A (1-11), 1B (11-30), 1C (31-50), 1D (50-57),
1E (56-70), 1F (71-80), 1G (80-101), 1H (101-116),
1I (116-123), 1J (123-131), 1K (132-137),
2 (141-149);
Texture : MOD PHYRIC BASALT, FINE-GRAINED;
Structure : FRACTURE ON PCE 2 SURFACE LINED BY CHLORITE-CLAY;
Alteration : SLIGHTLY;
Comments : GRAY BASALT;
Vesicles : Size(mm): 0.5-2 Percent: 2-6
Location: Filling: CLAY,CARB,ZEOLITE
Phenocrysts: PLAGIOCLASE ( 5%)
Size(mm): 2-4
Replacement: CLAY
DARK;
CARBONATE
ZEOLITE
ALL 3 ABOVE LINE VESICLES;
CHLORITE
CLAY
ABOVE 2 LINE FRACTURE SURFACE;
Leg : 58 Top/Bottom Interval(mm): 0/1450 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 425.45
Core: 7 Top of Core Depth (m) : 419.50
Sect: 4 Top of Section Depth(m): 424.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1A (1-12), 1B (12-21), 2A (24-30), 2B (31-38),
3A (39-50), 3B (50-56), 4 (58-60), 5 (63-66),
6A (68-77), 6B (77-82), 6C (83-87), 7 (88-95),
8A (97-106), 8B (107-115), 9 (118-125),
10 (127-144);
Texture : MOD PHYRIC BASALT, FINE-GRAINED;
Structure : WHITISH GREEN CLAY LINING TO FRACTURE SURFACES SOME
CHALCOPYRITE, PCES 6A+6B HAVE A THICK VEIN 3MM
ACROSS FILLED BY ZEOLITE;
Alteration : SLIGHTLY;
Comments : GRAY BASALT;
Vesicles : Size(mm): 0.5-2 Percent: 2-6
Location: Filling: CARB,CLAY,ZEOLITE
Phenocrysts: PLAGIOCLASE ( 5%)
Size(mm): 2-4
Replacement: CLAY
DARK;
CARBONATE
ABOVE 2 LINE VESICLES;
ZEOLITE
FILLS VEINS AND LINES VESICLES;
CLAY
WHITISH GREEN LINES FRACTURE SURFACES;
CHALCOPYRITE
LINES FRACTURES AND IS FOUND IN PCE 1A IN A LARGE
CLUSTER;
Leg : 58 Top/Bottom Interval(mm): 0/ 270 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 425.77
Core: 7 Top of Core Depth (m) : 419.50
Sect: 5 Top of Section Depth(m): 425.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1 (0-5), 2 (7-13), 3A (15-21), 3B (21-27);
Texture : MOD PHYRIC, FINE-GRAINED;
Structure : MASSIVE, PCE 1 HAS A FRACTURE WITH GREENISH
CHLORITIC LINING, OLIVE GREENISH LINING WITH PYRITE
ON FRACTURES PCES 3A+3B;
Alteration : SLIGHTLY;
Comments : BASALT IS GRAY COLOR;
Vesicles : Size(mm): 0.5-1 Percent: 2
Location: Filling: CLAY,CARB
DARK CLAY;
Phenocrysts: PLAGIOCLASE ( 5%)
Size(mm): 2-4
Replacement: CLAY
DARK;
CARBONATE
BOTH FILL VESICLES;
CHLORITE
GREENISH CHLORITIC LINING ON FRACTURE IN PCE 1;
PYRITE
PCES 3A+3B;
Leg : 58 Top/Bottom Interval(mm): 0/1470 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 430.47
Core: 8 Top of Core Depth (m) : 429.00
Sect: 1 Top of Section Depth(m): 429.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1 (1-4), 2 (6-10), 3 (12-15), 4 (18-30),
5 (32-35), 6 (38-40), 7 (43-47), 8A (50-55),
8B (55-66), 9 (68-86), 10 (88-92), 11A (95-110),
11B (110-123), 12A (125-135), 12B (135-147);
Texture : MOD PHYRIC, FINE-GRAINED, PCES 1+2+3+5 ARE EVEN
FINER-GRAINED BUT MAY BE DUE TO UPHOLE CONTAMINATION
FROM TOP OF UNIT;
Structure : MASSIVE, FRACTURES - LINED BY WHITISH GREEN CLAY;
Alteration : SLIGHTLY;
Comments : BASALT IS GRAY;
Vesicles : Size(mm): 0.5-2 Percent: 1-5
Location: Filling: CLAY,CARB
BROWN CLAY;
Phenocrysts: PLAGIOCLASE ( 5%)
Size(mm): 2-4
PYROXENE
OCCASIONAL LARGER PYX PHENOS AROUND PLAG LATHS
OBSERVED UNDER BINOCULAR MICROSCOPE;
Replacement: CLAY
DARK BROWN;
CARBONATE
ABOVE 2 FILL VESICLES;
CLAY
WHITISH GREEN LINES FRACTURES;
Leg : 58 Top/Bottom Interval(mm): 0/1490 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 431.99
Core: 8 Top of Core Depth (m) : 429.00
Sect: 2 Top of Section Depth(m): 430.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1A (1-11), 1B (11-16), 1C (17-24), 2 (26-36),
3 (38-48), 4 (49-55), 5 (58-65), 6 (67-81),
7A (83-90), 7B (90-104), 7C (104-111), 7D (111-117),
8A (119-127), 8B (127-134), 9 (136-148);
Texture : FINE TO MEDIUM-GRAINED, MOD PHYRIC;
Structure : MASSIVE, FRACTURES THROUGHOUT;
Alteration : SLIGHTLY;
Comments : BASALT IS GRAY COLOR;
Vesicles : Size(mm): 0.5-3 Percent: 2-5
Location: Filling: CLAY,CARB
BROWN CLAY;
Phenocrysts: PLAGIOCLASE ( 5%)
Size(mm): 2-4
Replacement: CLAY
OLIVE GREENISH LINING TO FRACTURE SURFACES PCES 7D
+9;
DARK BROWN LINES VESICLES IN UPPER PART;
IN PCES 7C+8A SQUARE SECTIONS OF DARK CLAY
AGGREGATES MAY BE REPLACEMENTS OF EARLY PLAG
PHENOS;
PYRITE
ODD GRAINS ON SOME DARK FRACTURE SURFACES
THROUGHOUT SECTION;
CARBONATE
LINES VESICLES IN UPPER PART OF SECTION;
Leg : 58 Top/Bottom Interval(mm): 0/ 240 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 438.74
Core: 9 Top of Core Depth (m) : 438.50
Sect: 1 Top of Section Depth(m): 438.50
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 240/ 400 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 438.90
Core: 9 Top of Core Depth (m) : 438.50
Sect: 1 Top of Section Depth(m): 438.74
LITHOLOGY: APHANITIC BASALT + BAKED SEDIMENT;
Piece No. : PCE 1 (25-40);
Texture : GLASSY, APHANITIC;
Alteration : SLIGHTLY TO MOD;
Comments : ASSORTED FRAGMENTS, SEDIMENT IS WHITE AND GREEN AND
IS BAKED ON TO THE GLASSY BASALT;
Leg : 58 Top/Bottom Interval(mm): 410/1500 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 440.00
Core: 9 Top of Core Depth (m) : 438.50
Sect: 1 Top of Section Depth(m): 438.91
LITHOLOGY: PLAG VERY SPARSELY PHYRIC BASALT;
Piece No. : PCE 2 (41-49), 3A (51-56), 3B (56-69), 4A (71-87),
4B (87-96), 4C (96-108), 5 (110-115), 6 (119-122),
7 (123-125), 8 (128-131), 9 (132-141), 10 (143-149);
Texture : VERY SPARSELY PHYRIC, GRADES DOWN SECTION FROM
APHANITIC TO FINE-GRAINED BASALT;
Structure : MASSIVE;
Vesicles : Size(mm): 0.5-3.0 Percent: 3
Location: Filling: CALCITE,CLAY
Alteration : SLIGHTLY TO MOD;
Comments : GRAY COLORED BASALT;
Phenocrysts: PLAGIOCLASE ( <<1%)
Size(mm): 1X2
Replacement: CALCITE
CLAY
BOTH FILL AMYGDULES;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 441.50
Core: 9 Top of Core Depth (m) : 438.50
Sect: 2 Top of Section Depth(m): 440.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 1A (0-9), 1B (7-15), 2 (17-28), 3A (30-44),
3B (44-54), 3C (54-70), 4 (72-89), 5 (91-100),
6 (101-114), 7 (116-134), 8 (135-145), 9 (147-150);
Texture : SPARSELY PHYRIC, RANGES FROM FINE-GRAINED TO FINE TO
MEDIUM-GRAINED AT END OF SECTION;
Alteration : SLIGHTLY TO MOD
0-70CM;
SLIGHTLY
70-150CM;
Vesicles : Size(mm): 4.0-0.5 Percent: 1-10
Location: Filling: CALCITE,CLAY
0-70CM,AMYGDALOIDAL;
Size(mm): 0.1-2.0 Percent: 1-10
70-150CM;
Phenocrysts: PLAGIOCLASE ( <1%)
Size(mm): 3X2-1X.5
SLIGHTLY MORE ABUNDANT THAN SECTION 1;
Replacement: CALCITE
CLAY
BOTH FILL AMYGDALOIDAL VESICLES 0-70CM;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 443.00
Core: 9 Top of Core Depth (m) : 438.50
Sect: 3 Top of Section Depth(m): 441.50
LITHOLOGY: PLAG VERY SPARSELY PHYRIC BASALT;
Piece No. : PCE 1 (0-6), 2 (7-19), 3A (20-32), 3B (32-40),
3C (41-56), 3D (57-60), 4 (62-67), 5 (70-73),
6A (74-88), 6B (89-102), 7 (104-107), 8 (110-113),
9 (116-125), 10 (128-137), 11 (138-149);
Alteration : CHLORITIC OR CLAY ALTERATION OF GNDMASS VISIBLE
SLIGHTLY;
FEW ALTERATION VEINS PRESENT WITH DARK GREEN CLAY
OR CHLORITE FILLING;
Phenocrysts: PLAGIOCLASE ( <1%)
Size(mm): 1.5X.5-2X3
Replacement: CHLORITE
CLAY
BOTH FOUND IN ALTERATION OF GNDMASS AND
ALTERATION VEINS;
PYRITE
PCE 1 HAS VEIN ON SIDE;
Leg : 58 Top/Bottom Interval(mm): 0/ 730 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 454.73
Core: 10 Top of Core Depth (m) : 448.00
Sect: 5 Top of Section Depth(m): 454.00
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 730/1220 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 455.22
Core: 10 Top of Core Depth (m) : 448.00
Sect: 5 Top of Section Depth(m): 454.73
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (75-80), 2 (83-90), 3 (94-101), 4 (105-122);
Texture : APHYRIC, APHANITIC TO FINE-GRAINED, GLASSY ZONE AT
TOP-BELOW SEDIMENT;
Alteration : FRESH;
Vesicles : Size(mm): .2-330 Percent: -35
Location: C Filling: ALCITE,PYRITE
Replacement: CALCITE
CRYSTALS;
PYRITE
OCTAHEDRA;
BOTH COMMON IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 459.00
Core: 11 Top of Core Depth (m) : 457.50
Sect: 1 Top of Section Depth(m): 457.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-6), 2 (7-15), 3 (16-24), 4 (26-33),
5 (35-40), 6 (40-49), 7 (50-59), 8A (60-67),
8B (67-74), 8C (74-80), 9 (81-86), 10A (87-93),
10B (94-100), 11 (101-106), 12 (107-110),
13 (112-117), 14 (119-129), 15 (130-135),
16 (136-140), 17 (140-143), 18 (144-150);
Texture : APHYRIC, FINE TO MEDIUM-GRAINED;
Alteration : FRESH;
Vesicles : Size(mm): 1-1. Percent: 530-4
Location: 0 Filling:
Leg : 58 Top/Bottom Interval(mm): 0/1490 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 460.49
Core: 11 Top of Core Depth (m) : 457.50
Sect: 2 Top of Section Depth(m): 459.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-10), 1B (8-16), 2 (17-23), 3 (25-33),
4 (35-40), 5 (42-45), 6 (47-50), 7 (51-56),
8 (57-60), 9 (62-70), 10 (70-74), 11 (76-84),
12 (86-93), 13 (94-100), 14 (102-108), 15 (111-114),
16 (116-121), 17 (122-129), 18 (130-133),
19 (135-138), 20 (139-142), 21 (143-148);
Texture : APHYRIC, FINE TO MEDIUM-GRAINED;
Alteration : FRESH;
Vesicles : Size(mm): .2-325 Percent: -40
Location: PY Filling: RITE,CALCITE
Replacement: CALCITE
PYRITE
BOTH FOUND IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 550 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 461.05
Core: 11 Top of Core Depth (m) : 457.50
Sect: 3 Top of Section Depth(m): 460.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-8), 2 (10-13), 3 (15-20), 4 (24-27),
5 (29-35), 6 (36-40), 7 (42-50), 8 (51-55);
Texture : APHYRIC;
Alteration : FRESH;
Vesicles : Size(mm): .2-3 Percent: 30
VESICLES OFTEN HAVE EUHEDRAL CALCITE AND PYRITE
GROWING IN THEM;
Replacement: CALCITE
EUHEDRAL, FILLS VESICLES;
PYRITE
FOUND GROWING IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1400 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 468.40
Core: 12 Top of Core Depth (m) : 467.00
Sect: 1 Top of Section Depth(m): 467.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-3), 2 (4-11), 3A (13-23), 3B (21-31),
3C (29-60), 3D (60-80), 3E (78-82), 4A (84-107),
4B (106-148);
Texture : APHYRIC, AMYGDALOIDAL, 1 CHUNK OF FINE-GRAINED PLAG
MICROPORPHYRITIC BASALT AT TOP OF SECTION;
Structure : MASSIVE, NUMEROUS CRISS-CROSSING CALCITE + CLAY
FILLED VEINS;
Alteration : FRESH;
Vesicles : Size(mm): 0.2-1.5 Percent: 15
Location: Filling: GREEN CLAY,CALCIT
Replacement: CALCITE
CLAY
BOTH FILL VESICLES AND VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/1370 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 469.87
Core: 12 Top of Core Depth (m) : 467.00
Sect: 2 Top of Section Depth(m): 468.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-40), 1B (41-49), 1C (49-112),
1D (112-130), 1E (130-136);
Texture : APHYRIC;
Structure : PCE 1C CONTAINS NUMEROUS CALCITE VEINS FILLED WITH
CHLORITE WITH THICKNESSES FROM 1-2MM, THESE OCCUR IN
A 20CM SECTION;
Alteration : SLIGHTLY TO MOD;
Comments : BASALT IS DARK GRAY COLOR;
Replacement: CALCITE
CHLORITE
Leg : 58 Top/Bottom Interval(mm): 1370/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 470.00
Core: 12 Top of Core Depth (m) : 467.00
Sect: 2 Top of Section Depth(m): 469.87
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 0/ 210 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 471.71
Core: 12 Top of Core Depth (m) : 467.00
Sect: 4 Top of Section Depth(m): 471.50
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 210/ 730 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 472.23
Core: 12 Top of Core Depth (m) : 467.00
Sect: 4 Top of Section Depth(m): 471.71
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (22-27), 2 (30-32), 3 (35-40), 4 (41-46),
5 (48-57), 6 (58-64), 7 (66-73);
Texture : 21-27CM CHILL ZONE - APHANITIC, 27-73CM
FINE-GRAINED, APHYRIC;
Alteration : SLIGHTLY TO MOD;
Comments : BASALT IS GRAY TO DARK GRAY COLOR;
Vesicles : Size(mm): < Percent: 215-2
Location: 0 Filling:
21-51CM;
Leg : 58 Top/Bottom Interval(mm): 0/1200 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 477.70
Core: 13 Top of Core Depth (m) : 476.50
Sect: 1 Top of Section Depth(m): 476.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-5), 2 (7-15), 3 (17-25), 4 (27-30),
5 (33-35), 6A (37-47), 6B (48-55), 7 (57-65),
8A (68-78), 8B (80-111), 9 (113-120);
Texture : APHYRIC, FINE-GRAINED TO APHANITIC;
Alteration : MOD;
Comments : DARK BASALT;
Vesicles : Size(mm): <10 Percent: 5
Location: Filling: CALCITE,SMEC
PARTLY UNFILLED;
Leg : 58 Top/Bottom Interval(mm): 1200/1330 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 477.83
Core: 13 Top of Core Depth (m) : 476.50
Sect: 1 Top of Section Depth(m): 477.70
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 10 (122-124), 11 (127-133);
Texture : APHYRIC, FINE-GRAINED TO APHANITIC, CHILL ZONE OF
TOP OF NEXT LAVA FLOW;
Alteration : MOD;
Vesicles : Size(mm): Percent: 5
126-133CM, UNFILLED;
Leg : 58 Top/Bottom Interval(mm): 0/ 540 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 478.54
Core: 13 Top of Core Depth (m) : 476.50
Sect: 2 Top of Section Depth(m): 478.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-18), 1B (18-26), 1C (27-40), 1D (40-49),
2 (52-54);
Texture : APHYRIC, FINE-GRAINED, 45-54CM IS THE TOP OF A
CHILL ZONE;
Structure : NUMEROUS CALCITE VEINS WITH THICKNESSES UP TO 15MM;
Alteration : MOD;
Comments : BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): <1- Percent: 215-2
Location: 0 Filling: CALCITE,CLAY
Replacement: CALCITE
FILLS VESICLES AND VEINS;
CLAY
FILLS VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 90 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 486.09
Core: 14 Top of Core Depth (m) : 486.00
Sect: 1 Top of Section Depth(m): 486.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-9);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY;
Comments : DARK GRAY COLOR;
Leg : 58 Top/Bottom Interval(mm): 90/ 180 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 486.18
Core: 14 Top of Core Depth (m) : 486.00
Sect: 1 Top of Section Depth(m): 486.09
LITHOLOGY: SEDIMENTARY ROCKS;
Piece No. : PCE 2 (10-13), 3 (15-18);
Leg : 58 Top/Bottom Interval(mm): 180/1440 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 487.44
Core: 14 Top of Core Depth (m) : 486.00
Sect: 1 Top of Section Depth(m): 486.18
LITHOLOGY: APHYRIC BASALT FLOW;
Piece No. : PCE 4 (20-24), 5 (25-33), 6 (35-37), 7 (40-43),
8 (45-47), 9 (50-52), 10 (55-63), 11 (65-72),
12 (74-77), 13A (79-83), 13B (83-91), 13C (92-98),
13D (98-107), 14 (109-111), 15 (114-118),
16 (121-123), 17 (125-131), 18 (133-137),
19 (138-143);
Texture : VERY FINE-GRAINED, 20-24CM IS GLASSY;
Alteration : SLIGHTLY;
Comments : BASALT IS GRAY COLOR;
Vesicles : Size(mm): <7 Percent:
Location: Filling: CALCITE,ZEOLITE
RARE, THERE ARE ZONES 2-10MM OF VESICULAR BASALT;
Replacement: CALCITE
ZEOLITE
BOTH FILL VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 489.00
Core: 14 Top of Core Depth (m) : 486.00
Sect: 2 Top of Section Depth(m): 487.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-4), 1B (4-14), 1C (14-18), 2 (20-25),
3 (27-32), 4 (34-40), 5 (42-46), 6A (50-61),
6B (62-71), 7 (73-80), 8A (83-91), 8B (91-94),
9 (96-100), 10A (102-114), 10B (114-121),
10C (121-126), 11A (129-140), 11B (140-145),
12 (147-150);
Texture : APHYRIC, VERY FINE-GRAINED;
Alteration : SLIGHTLY;
Comments : BASALT IS GRAY COLOR;
Vesicles : Size(mm): <10 Percent:
Location: Filling: CALCITE,ZEOLITE
RARE BUT BIG, ALSO FILLED WITH PYRITE;
Replacement: CALCITE
ZEOLITE
PYRITE
ALL 3 FILL VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1380 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 490.38
Core: 14 Top of Core Depth (m) : 486.00
Sect: 3 Top of Section Depth(m): 489.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-4), 2 (7-11), 3 (14-18), 4 (20-24),
5 (26-30), 6 (33-39), 7 (41-49), 8A (51-60),
8B (60-64), 8C (65-71), 9 (72-75), 10 (76-80),
11 (82-86), 12 (88-92), 13 (94-104), 14 (106-114),
15 (112-137);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY;
Comments : BASALT IS GRAY;
Vesicles : Size(mm): 25X8 Percent:
Location: PCE 8A Filling: CALCITE,ZEOLITE
2 BIG VESICLES, ALSO FILLED WITH PYRITE;
Replacement: CALCITE
ZEOLITE
PYRITE
ALL 3 FILL THE 2 BIG VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 497.00
Core: 15 Top of Core Depth (m) : 495.50
Sect: 1 Top of Section Depth(m): 495.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-8), 2 (11-23), 3 (25-32), 4 (34-40),
5A (42-48), 5B (48-55), 6 (57-61), 7 (64-74),
8 (76-80), 9 (83-88), 10 (90-98), 11 (100-109),
12A (111-120), 12B (120-126), 12C (126-132),
13 (135-142), 14 (144-150);
Texture : APHYRIC, VERY FINE-GRAINED;
Vesicles : Size(mm): 1-5 Percent: <<1
Location: Filling: CALCITE
OCCASIONAL AMYGDULES;
Structure : CROSS-CUTTING CARBONATE AND CLAY-
LINED VEINS ARE COMMON, FRACTURE SURFACES ON PCES
5+10+11+12+13 LINED BY CHLORITIC CLAY MATERIAL +
CARB + PYRITE;
Alteration : SLIGHTLY;
Comments : BASALT IS DARK GRAY COLOR;
Phenocrysts: OLIVINE
Size(mm): 5X3
PCE 1, 1 LARGE PHENO;
Replacement: CARBONATE
FILLS VEINS, LINES FRACTURE SURFACES AND FILLS
AMYGDULES (CALCITE);
CLAY
LINES VEINS AND FRACTURE SURFACES (CHLORITIC);
PYRITE
LINES FRACTURE SURFACES;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 498.50
Core: 15 Top of Core Depth (m) : 495.50
Sect: 2 Top of Section Depth(m): 497.00
LITHOLOGY: APHYRIC BASALT;
SIMILAR TO CORE 15-1;
Piece No. : PCE 1A (1-9), 1B (10-27), 2A (30-33), 2B (34-36),
3 (37-43), 4 (45-50), 5A (52-57), 5B (52-59),
6 (61-85), 7 (76-78), 8 (81-86), 9 (89-95),
10 (98-104), 11 (105-112), 12 (114-117),
13A (120-123), 13B (123-128), 13C (129-137),
13D (137-145), 13E (145-150);
Texture : APHYRIC, VERY FINE-GRAINED;
Structure : CROSS-CUTTING CLAY AND CARB VEINS,
FRACTURES LINED BY GREENISH CHLORITIC-CLAY
MATERIAL + CARBONATE + SOME PYRITE, PCES 5+13
HEAVILY-VEINED, PCE 13 IS VERY BROKEN UP ALONG
VEINS (FRACTURES);
Vesicles : Size(mm): 8-15 Percent:
Location: Filling: CLAY,PYRITE
PCES 10+13B;
Size(mm): 1-5 Percent: <<1
Location: Filling: CARB
OCCASIONAL LARGE AMYGDULES,ALSO STRINGS OF VESICLE
AND AMYGDULES IN PCE 6;
Replacement: CARBONATE
FILLS AMYGDULES + VEINS, LINES FRACTURES;
CLAY
FILLS VEINS, GREENSIH-CHLORITIC LINES FRACTURES,
WHITISH-GREEN LINES VESICLES;
PYRITE
LINES FRACTURES AND VESICLES;
Comments : BASALT IS DARK GRAY;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 500.00
Core: 15 Top of Core Depth (m) : 495.50
Sect: 3 Top of Section Depth(m): 498.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-8), 2 (9-17), 3 (18-23), 4 (24-35),
5 (36-45), 6A (47-54), 6B (54-65), 6C (65-72),
7A (74-85), 7B (86-91), 7C (91-98), 7D (99-102),
7E (102-117), 8A (119-124), 8B (124-127),
8C (127-141), 8D (142-148);
Texture : APHYRIC, VERY FINE-GRAINED;
Structure : CROSS CUTTING CARBONATE-FILLED VEINS, FRACTURES
LINED BY DARK GREEN CHLORITIC MATERIAL AND CARBONATE
LIGHT OLIVE GREEN CLAY AND PYRITE;
10-15 CARB
% REMNANTS OF 2 AMYGDULES BETWEEEN PCES 6A-6B AND 7C
Alteration : SLIGHTLY
DARK GRAY CLAYEY ALTERATION ZONE SURROUNDS SOME
VESICLES;
Comments : BASALT IS DARK GRAY;
Vesicles : ROWS OF FINE VESICLES IN PCES 5+6B+6C+8, SOME
CARBONATE-FILLED OFTEN WITH ASSOCIATED DARK GRAY
CLAYEY ALTERATION ZONE;
Size(mm): 1-5 Percent:
Location: Filling: CLAY,CARB
OCCASIONAL, THINLY-LINED, ODD ONE HAS PYRITE, CLAY
IS GREYISH COLOR;
Replacement: CARBONATE
FILLS VEINS + VESICLES + AMYGDULES, LINES
FRACTURES;
CHLORITE
DARK GREEN LINES FRACTURES;
CLAY
LIGHT OLIVE GREEN LINES FRACTURES, GRAYISH LINES
VESICLES;
PYRITE
LINES FRACTURES, THINLY LINES ONE VESICLE;
Leg : 58 Top/Bottom Interval(mm): 0/ 940 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 500.94
Core: 15 Top of Core Depth (m) : 495.50
Sect: 4 Top of Section Depth(m): 500.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-15), 2A (17-20), 2B (18-27), 3 (28-33),
4A (35-44), 4B (44-49), 4C (49-55), 4D (55-65),
4E (64-82), 4F (82-93);
Texture : APHYRIC, VERY FINE-GRAINED;
Structure : CROSS CUTTING CALCITE VEINS, PCE 3 AND LOWER PART OF
PCE 4B HAVE A DARK FRACTURE SURFACE COVERED BY FINE-
GRAINED PYRITE;
Alteration : FRESH;
Comments : BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): 10-20 Percent:
Location: Filling: CLAY,PYRITE
OCCASIONAL, CLAY LINING COLORED OLIVE GREEN;
Location: Filling: CARBONATE
ROWS OF VESICLES WITH ALTERATION ZONE;
Replacement: CALCITE
FILLS VEINS;
CARBONATE
FILLS VESICLES;
CLAY
BLUE-GREEN LINES OCCASIONAL LARGE VESICLE;
PYRITE
FINE-GRAINED COVERS FRACTURE SURFACE, LINES
OCCASIONAL LARGE VESICLE;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 506.50
Core: 16 Top of Core Depth (m) : 505.00
Sect: 1 Top of Section Depth(m): 505.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-13), 1B (13-15), 1C (15-17), 2 (18-22),
3A (24-33), 3B (27-35), 4 (37-48), 5 (50-61),
6 (62-66), 7 (68-72), 8 (74-77), 9 (79-85),
10 (87-93), 11 (95-97), 12A (99-109), 12B (108-115),
13 (117-121), 14 (123-128), 15 (132-135),
16 (137-143), 17 (145-149);
Texture : APHYRIC, FINE-GRAINED BASALT;
Structure : CROSS CUTTING VEINS AND FRACTURES LINED BY DARK
GREEN OR LIGHT OLIVE GREEN CLAYS + PYRITE + CARB;
Alteration : SLIGHTLY;
Comments : BASALT IS DARK GRAY;
Vesicles : OCCASIONAL LARGE VESICLES LINED BY LIGHT GRAY OR
LIGHT OLIVE GREEN CLAY OR FINE-GRAINED PYRITE AND
CARBONATE;
Replacement: CLAY
DARK GREEN FILLS VEINS AND FRACTURES, LIGHT OLIVE
GREEN FILLS VEINS AND FRACTURES AND LINES
OCCASIONAL LARGE VESICLES, LIGHT GRAY LINES
OCCASIONAL LARGE VESICLES;
PYRITE
FILLS VEINS AND FRACTURES, FINE-GRAINED LINES
OCCASIONAL LARGE VESICLES;
CARBONATE
FILLS VEINS AND FRACTURES AND LINES OCCASIONAL
LARGE VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1170 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 507.67
Core: 16 Top of Core Depth (m) : 505.00
Sect: 2 Top of Section Depth(m): 506.50
LITHOLOGY: APHYRIC BASALT;
SIMILAR TO CORE 16-1;
Piece No. : PCE 1 (2-7), 2 (10-13), 3 (15-21), 4A (24-27),
4B (27-31), 5 (35-39), 6A (41-73), 6B (70-78),
6C (79-97), 7 (99-105), 8 (107-117);
Texture : APHYRIC, FINE-GRAINED, CHILL ZONE AND GLASSY MARGIN-
GLASS (98-103CM) ALTERED TO BLUISH GRAY MATERIAL;
Structure : CROSS CUTTING CALCITE VEINS AND DARK CLAY FILLED
VEIN (<0.5MM WIDE), FRACTURE SURFACES COVERED BY
GREENISH CLAY MATERIAL AND DARK BLACK MATERIAL-RARE
PYRITE;
Alteration : FRESH;
Comments : PCE 8 IS DRILLING RUBBLE;
BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): <0.5 Percent:
Location: Filling: CARB
LINES OR ZONES OF VESICLES CROSS CUT BASALT,
ALTERATION ZONE OF GRAY CLAYEY MATERIAL IN ZONE;
Replacement: CALCITE
FILLS VEINS;
CARBONATE
FILLS VESICLES;
CLAY
DARK - FILLS VEINS, GREENISH COVERS FRACTURE
SURFACES;
PYRITE
RARE - COVERS FRACTURE SURFACES;
Leg : 58 Top/Bottom Interval(mm): 1180/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 508.00
Core: 16 Top of Core Depth (m) : 505.00
Sect: 2 Top of Section Depth(m): 507.68
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 0/ 210 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 518.40
Core: 17 Top of Core Depth (m) : 514.50
Sect: CC Top of Section Depth(m): 518.29
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 210/ 300 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 518.49
Core: 17 Top of Core Depth (m) : 514.50
Sect: CC Top of Section Depth(m): 518.40
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (22-29);
Texture : APHYRIC, FINE-GRAINED;
Alteration : FRESH;
Comments : BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): 10 Percent:
Location: Filling:
Shape : ROUNDED
Size(mm): 10-15X2 Percent:
Location: Filling:
Shape : PIPE
Size(mm): 10X8 Percent:
Location: Filling:
Shape : ANGULAR
TRIANGULAR CROSS SECTION IN SHAPE;
SEVERAL LARGE VESICLES AT TOP OF PCE OFTEN PIPE-
LIKE;
VESICLES OFTEN LINED BY GRAY CLAY MATERIAL AND
CARBONATE, LIGHT OLIVE GREEN CLAY IN SOME
VESICLES, APPROX. 5% TOTAL VESICLES;
Replacement: CLAY
GRAY - LINES VESICLES, OLIVE GREEN ON OUTER
SURFACE AND IN SOME VESICLES;
PYRITE
FOUND ON OUTER SURFACE AND IN SOME VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 200 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 527.20
Core: 18 Top of Core Depth (m) : 524.00
Sect: 3 Top of Section Depth(m): 527.00
LITHOLOGY: BITS OF BAKED SEDIMENT + GLASSY BASALT;
Piece No. : PCE 1 (2-19);
Alteration : SLIGHTLY TO MOD;
Leg : 58 Top/Bottom Interval(mm): 220/1350 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 528.35
Core: 18 Top of Core Depth (m) : 524.00
Sect: 3 Top of Section Depth(m): 527.22
LITHOLOGY: APHYRIC BASALT;
MASSIVE BASALT;
Piece No. : PCE 2 (23-28), 3 (31-39), 4 (41-45), 5 (47-50),
6A (52-85), 6B (80-104), 6C (102-110), 6D (110-122),
6E (121-125), 7 (127-135);
Texture : APHYRIC;
Structure : MASSIVE, AMYGDULES;
Alteration : SLIGHTLY TO MOD;
Vesicles : Size(mm): 2-3 5 Percent: -15
Location: CA Filling: LCITE
50% VESICLES 50% AMYGDULES, SOME
ARAGONITE NEEDLES VISIBLE IN A FEW VUGS;
Replacement: CALCITE
FILLS VESICLES AND AMYGDULES;
ARAGONITE
NEEDLES VISIBLE IN A FEW VUGS;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 530.00
Core: 18 Top of Core Depth (m) : 524.00
Sect: 4 Top of Section Depth(m): 528.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE BASALT;
Piece No. : PCE 1 (1-15), 2 (17-25), 3 (30-34), 4 (37-43),
5 (45-50), 6 (51-55), 7 (58-67), 8 (68-72),
9 (74-78), 10 (81-90), 11 (91-108), 12 (110-118),
13 (120-131), 14A (133-142), 14B (143-150);
Texture : APHYRIC;
Structure : MASSIVE, FAR FEWER AMYGDULES THAN PREVIOUS SECTION;
Alteration : SLIGHTLY;
Vesicles : Size(mm): Percent: 5-10
Location: Filling: CALCITE
PYRITE VISIBLE AS FREE CRYSTALS IN VESICLES;
CHAINS OF VESICLES ORIENTED HORIZONTALLY;
Replacement: CALCITE
FILLS VESICLES AND AMYGDULES;
PYRITES
VISIBLE AS FREE CRYSTALS IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 500 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 530.50
Core: 18 Top of Core Depth (m) : 524.00
Sect: 5 Top of Section Depth(m): 530.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE BASALT;
Piece No. : PCE 1 (1-13), 2 (17-26), 3 (27-38), 4 (41-50);
Texture : APHYRIC, FINE-GRAINED;
Structure : MASSIVE, VEIN;
Alteration : SLIGHTLY;
Vesicles : Size(mm): .2-1 0 Percent: -7
Replacement: CALCITE
PYRITE
CHLORITE
A LITTLE OF EACH VISIBLE ON VEIN SURFACE;
Leg : 58 Top/Bottom Interval(mm): 0/1410 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 534.91
Core: 19 Top of Core Depth (m) : 533.50
Sect: 1 Top of Section Depth(m): 533.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE BASALT;
Piece No. : PCE 1 (0-4), 2A (7-40), 2B (35-48), 3A (52-73),
3B (73-95), 3C (95-125), 3D (125-140);
Texture : APHYRIC MASSIVE, FINE-GRAINED;
Structure : SOME GREEN CLAY OR CHLORITE ON OCCASIONAL FRACTURE
SURFACES, NO CARB FILLED VEINS;
Alteration : MOD;
Vesicles : Size(mm): Percent: 0-3
Location: Filling: CALCITE
Replacement: CALCITE
IN VESICLES;
CLAY
CLAY OR CHLORITE FOUND ON FRACTURE SURFACES;
CHLORITE
CLAY OR CHLORITE ON FRACTURE SURFACES;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 536.50
Core: 19 Top of Core Depth (m) : 533.50
Sect: 2 Top of Section Depth(m): 535.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCE 1A (0-15), 1B (16-77), 1C (77-97), 1D (92-98),
2 (100-109), 3A (110-116), 3B (115-121),
4 (123-131), 5A (133-145), 5B (145-150);
Texture : APHYRIC AND MASSIVE, FINE-GRAINED;
Structure : CALCITE-FILLED AMYGDULES, A FEW CARB VEINS IN PCE 4;
Alteration : SLIGHT TO MOD;
Comments : GRAY BASALT;
Vesicles : Size(mm): .2-2 Percent: 0-7
Replacement: CALCITE
IN AMYGULES;
CARBONATE
IN VEINS;
Leg : 58 Top/Bottom Interval(mm): 100/ 250 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 536.75
Core: 19 Top of Core Depth (m) : 533.50
Sect: 3 Top of Section Depth(m): 536.60
LITHOLOGY: SEDIMENT;
Piece No. : INTERVAL 10-25CM;
Leg : 58 Top/Bottom Interval(mm): 0/1450 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 537.95
Core: 19 Top of Core Depth (m) : 533.50
Sect: 3 Top of Section Depth(m): 536.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCE 1 (0-10), 2 (28-35), 3 (37-42), 4 (45-48),
5 (52-58), 6 (60-65), 7 (67-75), 8 (76-80),
9 (81-89), 10A (90-99), 10B (100-105),
10C (105-109), 11 (110-114), 12A (115-121),
12B (121-126), 13A (127-136), 13B (135-144);
Texture : APHYRIC, GLASSY TO APHANITIC AND FINE-GRAINED
MASSIVE PCES 2-13B, CHILL ZONE AT BOTTOM OF PCE 1,
GLASSY CHILL ZONE TOP OF PCE 2, GLASSY IN PCE 1,
GRAIN SIZE INCREASES DOWNWARD;
Structure : PYRITES ON FRACTURE PCE 9, CARB VEINS
PCES 10B+10C+12A+12B+13B, CLAY VEINS IN PCE 13A;
Alteration : SLIGHTLY
PCE 2;
MOD;
PCE 1 AND PCES 3-13B;
Vesicles : Size(mm): .2-.5 Percent: 10
PCE 1, BUT ABSENT FROM GLASSY ZONE;
Size(mm): .5-1 Percent: 1-2
Location: Filling: CLAY,SULFIDE
PCES 2-13B;
Location: Filling: PYRITE,PYRRHOT
IN PCE 12A;
Groundmass : APHANITIC;
Replacement: CARBONATE
IN VEINS;
CLAY
IN VEINS PCE 13A;
PYRITE
IN VESICLES AND ON FRACTURE ON PCE 9;
PYRRHOTITE
IN VESICLES PCE 12A;
Leg : 58 Top/Bottom Interval(mm): 0/ 200 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 538.20
Core: 19 Top of Core Depth (m) : 533.50
Sect: 4 Top of Section Depth(m): 538.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCE 1 (0-10), 2 (12-20);
Texture : APHYRIC, MASSIVE, FINE-GRAINED;
Vesicles : Size(mm): 0.5-1.0 Percent: 1
Location: Filling: CLAY
AMYGDULES;
Structure : CARB VEINS AND CLAY VEINS (TWO GENERATIONS) PCE 1,
CARB VEIN ON FRACTURE PCE 2;
Alteration : SLIGHTLY;
Replacement: CLAY
IN AMYGDULES;
CARBONATE
IN VEINS;
CLAY
IN VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 544.50
Core: 20 Top of Core Depth (m) : 543.00
Sect: 1 Top of Section Depth(m): 543.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-3), 2A (4-14), 2B (15-19), 3A (20-25),
3B (26-30), 4 (32-35), 5A (37-46), 5B (47-53),
6 (55-58), 7 (60-67), 8 (70-74), 9A (75-97),
9B (97-113), 9C (113-125), 9D (125-134),
9E (135-145), 9F (145-147), 9G (147-149);
Texture : APHYRIC, FINE-GRAINED;
Structure : NUMEROUS CALCITE VEINS (1-2MM) WITH CHLORITE AND PYR
Alteration : MOD;
Comments : DARK GRAY BASALT;
Vesicles : Size(mm): <2 Percent: 3-5
Location: Filling: CALC,CHLOR,PYR
VESICULAR;
Replacement: CALCITE
CHLORITE
ALL THREE FOUND IN VESICLES AND VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/1370 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 545.87
Core: 20 Top of Core Depth (m) : 543.00
Sect: 2 Top of Section Depth(m): 544.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-15), 2 (17-29), 3 (30-35), 4 (37-40),
5 (42-47), 6A (50-60), 6B (60-65), 7 (67-75),
8 (76-79), 9 (81-90), 10 (93-97), 11 (97-102),
12 (103-107), 13 (110-116), 14 (118-125),
15 (126-131), 16 (133-136);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY
PCES 4+5+6A+6B+ 11-16;
FRESH
PCES 1-3 AND 7-10;
Comments : DARK GRAY BASALT PCES 1-3, REST IS GRAY BASALT;
Vesicles : Size(mm): <1 Percent: 3
Location: Filling: CALC,CHLOR,PYR
PCES 1+2+3;
Size(mm): <1 Percent:
PCES 3-16;
Replacement: CALCITE
CHLORITE
PYRITE
ALL 3 MINERALS FILL VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 547.50
Core: 20 Top of Core Depth (m) : 543.00
Sect: 3 Top of Section Depth(m): 546.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-20), 1B (22-35), 1C (36-54), 1D (55-80),
2 (82-88), 3 (90-97), 4 (99-104), 5 (105-109),
6 (110-113), 7 (115-125), 8 (127-130), 9 (133-147);
Texture : APHYRIC, FINE-GRAINED, VESICULAR FROM 0-80CM;
Structure : CALCITE VEIN WITH CHLORITE AND PYRITE IN 115-150CM;
Alteration : SLIGHTLY;
CHLORITIZATION OF SECTION;
Comments : DARK GRAY FROM 0-80CM, GRAY BASALT FROM 80-150CM;
Vesicles : Size(mm): <2 Percent: 1
Location: Filling: CALCITE,ZEOL
PRESENCE OF ZEOLITE NOT CERTAIN, VESICLES FOUND
FROM 0-80CM;
Replacement: CALCITE
FILLS VEIN AND VESICLES;
CHLORITE
FILLS VEIN;
PYRITE
FILLS VEIN;
ZEOLITE
ID UNCERTAIN, IF PRESENT THEN FOUND IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 940 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 548.44
Core: 20 Top of Core Depth (m) : 543.00
Sect: 4 Top of Section Depth(m): 547.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-15), 2 (16-30), 3 (32-51), 4 (53-57),
5 (61-66), 7A (73-81), 7B (80-93);
Texture : APHYRIC, FINE-GRAINED BUT COARSER THAN BEFORE;
Alteration : MOD;
Comments : DARK GRAY (GREENISH) BASALT;
Replacement: CHLORITE
CHLORITIZATION OF SECTION;
Leg : 58 Top/Bottom Interval(mm): 0/1410 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 553.91
Core: 21 Top of Core Depth (m) : 552.50
Sect: 1 Top of Section Depth(m): 552.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-24), 1B (25-30), 1C (30-51), 2 (53-58),
3A (62-72), 3B (73-78), 3C (79-91), 4A (93-105),
4B (105-112), 5 (115-129), 6 (130-140);
Texture : APHYRIC, FINE-GRAINED, CHILL ZONE (TOP OF THE NEXT
LAVA FLOW) FROM 50-65CM;
Structure : CALCITE VEIN WITH CHLORITE AND PYRITE FOUND IN
INTERVAL 65-140C,
Alteration : SLIGHTLY;
Vesicles : Size(mm): <.5 Percent: <<1
IN INTERVAL 65-140CM;
Replacement: CALCITE
CHLORITE
PYRITE
ALL 3 MINERALS FOUND IN VEIN;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 555.50
Core: 21 Top of Core Depth (m) : 552.50
Sect: 2 Top of Section Depth(m): 554.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2 (13-21), 3 (23-28), 4 (30-40),
5 (42-53), 6 (55-60), 7 (62-67), 8A (70-80),
8B (81-107), 9A (110-125), 9B (125-150);
Texture : APHYRIC, FINE-GRAINED;
Structure : VEINS THROUGHOUT SECTION;
Alteration : MOD;
Leg : 58 Top/Bottom Interval(mm): 0/1400 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 556.90
Core: 21 Top of Core Depth (m) : 552.50
Sect: 3 Top of Section Depth(m): 555.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-10), 1B (10-20), 2 (22-34), 3 (35-46),
4A (47-60), 4B (60-67), 5A (70-85), 5B (85-100),
6 (101-115), 7 (117-121), 8 (124-140);
Texture : APHYRIC, FINE-GRAINED, VESICULAR;
Alteration : SLIGHTLY
ALMOST FRESH;
Comments : GRAY BASALT;
Vesicles : Size(mm): <1 Percent: 10-15
UNFILLED;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 558.50
Core: 21 Top of Core Depth (m) : 552.50
Sect: 4 Top of Section Depth(m): 557.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-18), 2A (20-30), 2B (30-36), 2C (37-55),
3A (57-72), 3B (73-92), 3C (93-103), 4 (105-114),
5 (115-130), 6 (134-148);
Texture : APHYRIC, FINE-GRAINED, VESICULAR;
Alteration : SLIGHTLY
PCES 1+3A+3B+3C+4+5+6;
MOD;
Comments : GRAY BASALT;
Vesicles : Size(mm): <1 Percent: 10-15
UNFILLED;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 560.00
Core: 21 Top of Core Depth (m) : 552.50
Sect: 5 Top of Section Depth(m): 558.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-14), 2A (15-29), 2B (30-37), 3 (40-43),
4A (45-61), 4B (62-70), 4C (70-90), 5 (91-99),
6 (100-109), 7 (115-120), 8 (123-126), 9 (129-147);
Texture : APHYRIC, FINE-GRAINED (COARSER THAN BEFORE
50-110CM); ;
Alteration : SLIGHTLY;
Comments : GRAY BASALT;
Vesicles : Size(mm): <1 Percent: 10
Location: Filling: CALC,CHLOR,PYR
VESICULAR;
Replacement: CALCITE
CHLORITE
ALL THREE FOUND IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1020 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 561.02
Core: 21 Top of Core Depth (m) : 552.50
Sect: 6 Top of Section Depth(m): 560.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-7), 1B (10-25), 2 (27-35), 3 (37-40),
4A (41-44), 4B (45-59), 5 (61-65), 6 (67-77),
7 (80-87), 8 (90-94), 9 (97-100);
Texture : APHYRIC, FINE-GRAINED, BOTTOM OF LAVA FLOW FROM
0-67CM, TOP OF NEXT LAVA FLOW 67-78CM ALSO CHILL
ZONE (GLASS) IN THIS INTERVAL;
Alteration : SLIGHTLY
PCES 6+7;
FRESH
PCES 1-5 AND 8+9;
Comments : DENSE PCE 7, GRAY BASALT PCES 1-5, DARK PCE 6, DARK
GRAY BASALT PCES 7+8+9;
FROM 0-67CM SAME FLOW AS CORE 21-5, FROM 67-78 TOP
OF NEXT LAVA FLOW, FROM 78-88CM FINE-GRAINED
(APHANITIC) DARK DENSE BASALT, FROM 88-101CM
FINE-GRAINED DARK GRAY FRESH BASALT;
Groundmass : APHANITIC FROM 78-88CM;
Leg : 58 Top/Bottom Interval(mm): 0/ 350 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 562.35
Core: 22 Top of Core Depth (m) : 562.00
Sect: 1 Top of Section Depth(m): 562.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 1 (0-5), 2 (7-10), 3A (11-19), 3B (20-26),
3C (24-30), 4 (31-34);
Texture : PLAG SPARSELY PHYRIC, NO EVIDENCE OF CHILL ZONE
ABOVE OR BELOW SEDIMENT, FINE-GRAINED;
Structure : CROSS CUTTING CHLORITIC AND ZEOL-LINED VEINS AND
FRACTURES (DARK CLAY);
Alteration : SLIGHTLY;
Comments : DARK GRAY BASALT;
Vesicles : Size(mm): .5 Percent: 1
Location: Filling: CLAY,PYR OR ZEOL
VESICLES FILLED BY DARK CLAY, PYRITE OR ZEOL;
Phenocrysts: PLAGIOCLASE ( <1-1%)
Size(mm): 2-3
Replacement: CLAY
IN VESICLES;
ID UNCERTAIN, POSSIBLY IN VESICLES;
ZEOLITE
ID UNCERTAIN, POSSIBLY IN VESICLES, PRESENT IN
VEINS;
CHLORITE
IN VEINS;
Leg : 58 Top/Bottom Interval(mm): 350/1250 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 563.25
Core: 22 Top of Core Depth (m) : 562.00
Sect: 1 Top of Section Depth(m): 562.35
LITHOLOGY: SEDIMENT;
CLAYSTONE, SANDY MUDSTONE AND VOLCANIC ASH
SEDIMENTS;
Comments : NO IMMEDIATELY OBVIOUS SIGNS OF BAKING;
Leg : 58 Top/Bottom Interval(mm): 1260/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 563.50
Core: 22 Top of Core Depth (m) : 562.00
Sect: 1 Top of Section Depth(m): 563.26
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 6 (127-132), 7 (134-150);
Texture : APHYRIC, FINE-GRAINED, NO EVIDENCE OF CHILL MARGIN
ABOVE OR BELOW SEDIMENT;
Alteration : SLIGHTLY;
Comments : LIGHT GRAY BASALT;
Vesicles : Size(mm): .5-2 Percent:
Location: Filling: CLAY
VESICLES LINED BY GREEN CLAY (OVERLYING ZEOLS ?);
Replacement: CLAY
GREEN CLAY LINES VESICLES;
ZEOLITE
ID UNCERTAIN, POSSIBLY UNDERLYING CLAY;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 565.00
Core: 22 Top of Core Depth (m) : 562.00
Sect: 2 Top of Section Depth(m): 563.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-3), 1B (3-6), 2 (7-19), 3 (21-24),
4A (26-36), 4B (37-40), 4C (40-47), 5 (49-59),
6 (62-64), 7 (65-83), 8 (85-95), 9 (97-107),
10 (108-113), 11 (115-118), 12 (120-127),
13A (130-137), 13B (140-145), 13C (145-150);
Texture : APHYRIC, FINE TO MEDIUM-GRAINED;
Structure : FRACTURE SURFACES WITH CHLORITIC LINING WITH ODD
PYRITE GRAIN BETWEEN PCES 4A+4B 13A+13B+13C AND ON
PCES 2+12;
Alteration : SLIGHTLY;
Comments : LIGHT GRAY BASALT;
Vesicles : Size(mm): .5-1 Percent: 1-2
Location: Filling: CLAY,PYR,ZEOL
OCCASIONALLY 2MM ACROSS, VESICLES OCCUR MAINLY
BETWEEN 15-70CM AND ARE LINED BY GREEN CLAY;
OCCASIONAL PYRITE AND ZEOLITE;
Phenocrysts: PLAGIOCLASE
Size(mm): 1.5-2
ODD PLAG PHENO;
Replacement: ZEOLITE
IN VESICLES;
PYRITE
IN FRACTURES AND VESICLES;
CLAY
IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 566.50
Core: 22 Top of Core Depth (m) : 562.00
Sect: 3 Top of Section Depth(m): 565.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-7), 2A (10-16), 2B (16-23), 2C (23-32),
2D (33-51), 2E (52-60), 3A (63-85), 3B (85-102),
4 (103-110), 5 (111-116), 6 (119-125), 7A (125-134),
7B (135-145), 8 (145-150);
Texture : APHYRIC, MEDIUM-GRAINED;
Structure : CROSS CUTTING CHLORITIC/CLAY (GREYISH AND GREENISH)-
LINED VEINS FROM .5-2MM WIDE, ALSO LINES FRACTURES,
PYRITE VISIBLE ON FRACTURE SURFACES;
Alteration : SLIGHTLY;
Comments : LIGHT GRAY BASALT;
Phenocrysts: PLAG AND PYX DISCERNABLE UNDER BINOCULAR
MICROSCOPE <.5-1MM;
Replacement: PYRITE
ON FRACTURES;
CLAY
CLAY IS CHLORITIC FOUND IN VEINS AND FRACTURES;
Leg : 58 Top/Bottom Interval(mm): 0/1060 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 567.56
Core: 22 Top of Core Depth (m) : 562.00
Sect: 4 Top of Section Depth(m): 566.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-29), 1B (30-43), 1C (43-51), 1D (51-61),
1E (61-76), 1F (76-87), 1G (87-105);
Texture : APHYRIC, MEDIUM TO FINE-GRAINED;
Structure : CROSS CUTTING CHLORITIC AND PYRITE-LINED FRACTURES
AND VEINS;
Alteration : SLIGHTLY;
Comments : LIGHT GRAY BASALT;
Replacement: PYRITE
CHLORITE
BOTH LINE VEINS AND FRACTURES;
Leg : 58 Top/Bottom Interval(mm): 0/1170 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 572.67
Core: 23 Top of Core Depth (m) : 571.50
Sect: 1 Top of Section Depth(m): 571.50
LITHOLOGY: SEDIMENT;
MUDSTONE AND CLAYSTONE;
Leg : 58 Top/Bottom Interval(mm): 1170/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 573.00
Core: 23 Top of Core Depth (m) : 571.50
Sect: 1 Top of Section Depth(m): 572.67
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (117-125), 2 (126-133), 3 (135-150);
Texture : APHYRIC, APHANITIC TO FINE-GRAINED;
Structure : ODD CROSS CUTTING CARB-LINED VEIN;
Vesicles : CARBONATE FILLED
AMYGDULES OR LINED BY LIGHT OLIVE GREEN CLAY
(SMEC?) PCES 2+3, TWO LARGE VUGS INFILLED BY CARB
ONE 20MM X 5MM, OTHER 8MM X 3MM PCE 3;
Alteration : SLIGHTLY;
Comments : LIGHT GRAY BASALT;
Vesicles : Size(mm): Percent: 1
PCES 2+3;
Replacement: CARBONATE
IN VEINS, VUGS + AMYGDULES;
CLAY
OLIVE GREEN CLAY (SMEC?) LINING AMYGDULES;
Leg : 58 Top/Bottom Interval(mm): 0/1270 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 574.27
Core: 23 Top of Core Depth (m) : 571.50
Sect: 2 Top of Section Depth(m): 573.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-17), 1B (17-24), 1C (25-50), 2A (52-72),
2B (73-87), 2C (87-99), 2D (99-126);
Texture : APHYRIC, FINE-GRAINED;
Structure : CROSS CUTTING CALCITE OR CHLORITIC AND PYRITE-LINED
VEINS,CHLORITIC VEIN WITH 2MM WIDE ALTERATION ZONE I
97-103CM;
Vesicles : LARGE VUG 25X40MM FILLED BY CARB (CONTINUES FROM
OUTER SURFACE TO INNER ?) BETWEEN PCES 1B+1C,LARGE
VUG 17X10MM FILLED WITH CARB PCE 2B,SOME OTHER
VUGS FROM 5-10MM;
Alteration : SLIGHTLY;
Comments : GRAY BASALT;
Vesicles : Size(mm): .5-1 Percent:
Location: Filling: CARB,CLAY
OCCASIONAL VESICLES USUALLY FILLED BY CARB OR
LINED BY LIGHT OLIVE GREEN CLAY (SMEC);
Replacement: CARBONATE
IN VESICLES AND VUGS;
CLAY
(SMEC) IN VESICLES;
CHLORITE
IN VEINS;
CALCITE
IN CROSS CUTTING VEINS;
PYRITE
IN CROSS CUTTING VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/1400 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 575.90
Core: 23 Top of Core Depth (m) : 571.50
Sect: 3 Top of Section Depth(m): 574.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-30), 1B (30-45), 1C (46-64), 2A (65-76),
2B (75-85), 3A (86-91), 3B (91-105), 3C (105-124),
3D (125-131), 3E (131-140);
Texture : APHYRIC, FINE-GRAINED;
Structure : A FEW CARB-FILLED VEINS
HAVE CAUSED THE CORE TO SPLIT LENGTHWISE IN PCE 3C;
Alteration : SLIGHTLY TO MOD;
Vesicles : Size(mm): Percent: <1
Location: Filling: CALCITE
Replacement: CALCITE
IN AMYGDULES;
CARBONATE
IN VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/1450 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 577.45
Core: 23 Top of Core Depth (m) : 571.50
Sect: 4 Top of Section Depth(m): 576.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCE 1A (0-21), 1B (20-35), 2 (37-53), 3A (55-59),
3B (60-71), 3C (73-85), 4 (86-104), 5A (106-120),
5B (120-144);
Texture : APHYRIC, FINE-GRAINED;
Structure : THICK CALCITE (1MM OR LESS) CLAY AND PYRITE-FILLED
VEINS, CARB VEINS IN PCES 1A+1B, CLAY + CARB + PYR
VEIN IN PCE 5B;
Alteration : SLIGHTLY TO MOD;
Vesicles : Size(mm): Percent: <1
Location: Filling: CALCITE
Replacement: CALCITE
IN VEINS AND VESICLES;
CARBONATE
IN VEINS;
PYRITE
IN VEINS;
Leg : 58 Top/Bottom Interval(mm): 0/1420 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 578.92
Core: 23 Top of Core Depth (m) : 571.50
Sect: 5 Top of Section Depth(m): 577.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCE 1A (0-23), 1B (24-29), 2A (31-45), 2B (45-55),
3 (57-77), 4 (80-90), 5 (92-100), 6 (103-120),
7 (121-135), 8 (135-140);
Texture : APHYRIC, MASSIVE, FINE-GRAINED, NO CHILL ZONE;
Vesicles : Size(mm): Percent: <1
Location: Filling: CLAY
Alteration : SLIGHTLY TO MOD;
Replacement: CLAY
FILLS AMYGDULES;
Leg : 58 Top/Bottom Interval(mm): 0/1410 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 580.41
Core: 23 Top of Core Depth (m) : 571.50
Sect: 6 Top of Section Depth(m): 579.00
LITHOLOGY: APHYRIC BASALT (?);
MASSIVE;
Piece No. : PCE 1 (0-10), 2 (11-25), 3 (27-32), 4 (35-40),
5 (42-53), 6 (55-61), 7A (63-76), 7B (77-88),
7C (89-122), 7D (123-130), 7E (130-140);
Texture : APHYRIC, MASSIVE;
Alteration : SLIGHTLY TO MOD;
Comments : THE ROCK APPEARS QUITE LEUCOCRATIC COMPARED TO MOST
BASALTS, BUT THERE APPEARS TO BE NO BREAK BETWEEN
IT AND THE MORE BASALTIC MATERIAL IN ABOVE SECTIONS
1-5, MAFICS PRESENT IN GRAIN MOUNT BUT LACK CLEAVAGE
AND COULD BE EPIDOTE, THIS MAY BE SIMPLY A HIGHLY
ALTERED BASALT, FINAL DETERMINATION AWAITS THIN
SECTION;
Vesicles : Size(mm): Percent: <<1
VIRTUALLY ABSENT;
Groundmass : PLAGIOCLASE
GRAIN MOUNT INDICATES THAT PLAG IS AROUND
AN55-AN65M HOWEVER QTZ IS PRESENT;
QUARTZ
Leg : 58 Top/Bottom Interval(mm): 0/ 220 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 581.22
Core: 24 Top of Core Depth (m) : 581.00
Sect: 1 Top of Section Depth(m): 581.00
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCE 1 (0-5), 2A (7-17), 2B (17-21);
Texture : PLAG PHYRIC, GLASSY RIND PCE 1;
Vesicles :
Location: Filling: CLAY
Alteration : SLIGHTLY;
Groundmass : OLIVINE
POSSIBLE RELICT OL;
Phenocrysts: PLAGIOCLASE ( 3-4%)
Size(mm): .5-2
PLAG LATHS IN GLASSY ZONE;
Replacement: CLAY ( RARE%)
FILLING AMYGDULES;
Leg : 58 Top/Bottom Interval(mm): 230/ 320 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 581.32
Core: 24 Top of Core Depth (m) : 581.00
Sect: 1 Top of Section Depth(m): 581.23
LITHOLOGY: CLAYSTONE;
Leg : 58 Top/Bottom Interval(mm): 340/ 640 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 581.64
Core: 24 Top of Core Depth (m) : 581.00
Sect: 1 Top of Section Depth(m): 581.34
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCE 3 (34-56), 4 (57-64);
Texture : PLAG PHYRIC, CHILL ZONE PCE 3;
Vesicles :
Location: Filling: CLAY
Alteration : SLIGHTLY;
Phenocrysts: PLAGIOCLASE ( 3-4%)
Size(mm): .5-2
Replacement: CLAY ( RARE%)
FILLS AMYGDULES;
Leg : 58 Top/Bottom Interval(mm): 650/1450 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 582.45
Core: 24 Top of Core Depth (m) : 581.00
Sect: 1 Top of Section Depth(m): 581.65
LITHOLOGY: SEDIMENT;
Comments : BAKED APPEARANCE AND BRICK-LIKE HARDNESS, GOES FROM
BROWN TO GREEN;
Leg : 58 Top/Bottom Interval(mm): 0/ 800 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 583.30
Core: 24 Top of Core Depth (m) : 581.00
Sect: 2 Top of Section Depth(m): 582.50
LITHOLOGY: SEDIMENT;
Comments : NOTICEABLY HARDER NEAR BASALT;
Leg : 58 Top/Bottom Interval(mm): 800/1450 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 583.95
Core: 24 Top of Core Depth (m) : 581.00
Sect: 2 Top of Section Depth(m): 583.30
LITHOLOGY: MASSIVE APHYRIC BASALT;
Piece No. : PCE 1 (83-87), 2 (90-102), 3 (105-115),
4A (117-127), 4B (127-140), 4C (140-144);
Texture : MASSIVE APHYRIC, FINE-GRAINED, COARSENS DOWNWARDS,
CHILL ZONE PCE 1;
Alteration : SLIGHT TO MOD;
Leg : 58 Top/Bottom Interval(mm): 0/1100 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 585.10
Core: 24 Top of Core Depth (m) : 581.00
Sect: 3 Top of Section Depth(m): 584.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-12), 1B (12-20), 1C (17-30), 2 (33-47),
3A (41-45), 3B (45-50), 3C (50-57), 4A (60-63),
4B (62-77), 4C (78-90), 5 (92-95), 6 (97-103),
7 (105-110);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY;
Vesicles : Size(mm): .2-4 Percent: 0-30
Location: Filling: CALC,CLAY
VESICLES FILLED IN ALL EXCEPT PCES 5+6+7 WHICH
ARE EMPTY, NOTE HORIZONTAL ORIENTATION OF SOME
CHAINS OF VESICLES;
Replacement: CALCITE
FILLS VESICLES;
CLAY
FILLS VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1050 Analyst: Dick, H.
Hole: 446A Sample Midpoint (m) : 586.55
Core: 24 Top of Core Depth (m) : 581.00
Sect: 4 Top of Section Depth(m): 585.50
LITHOLOGY: MASSIVE APHYRIC BASALT;
Piece No. : PCE 1A (0-10), 1B (10-30), 1C (30-42), 1D (43-64),
1E (65-76), 2A (78-86), 2B (86-97), 2C (95-104);
Texture : MASSIVE APHYRIC, FINE-GRAINED FOR ALL PCES EXCEPT
FOR PCE 2C WHICH ABRUPTLY BECOMES MEDIUM-GRAINED;
Vesicles :
Location: Filling: CLAY
Alteration : FRESH;
Vesicles : Size(mm): Percent: 10
IN TOP 1.5CM OF PCE 1A ONLY;
Replacement: CLAY
FILLS AMYGDULES;
Leg : 58 Top/Bottom Interval(mm): 0/1400 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 591.90
Core: 25 Top of Core Depth (m) : 590.50
Sect: 1 Top of Section Depth(m): 590.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-20), 1B (20-46), 1C (47-50), 2 (51-71),
3 (74-104), 4A (105-120), 4B (120-140);
Texture : APHYRIC, FINE-GRAINED;
Alteration : MOD;
Comments : DARK GRAY BASALT;
Vesicles : Size(mm): 2-3 Percent: 1-2
Location: Filling: CALCITE
FILLED WITH CALCITE FROM 0-80CM;
Size(mm): 2-3 Percent: 1-2
Location: Filling: CHLORITE
FILLED WITH CHLORITE FROM 80-140CM;
Phenocrysts: UPPER ONE-THIRD APPEARS TO HAVE APPROX. 5%
RELICT PHENOS POSSIBLY AFTER OL AS SUGGESTED BY
EUHEDRAL OUTLINES WITH EXPANSION CRACKS IN
IN ALTERATION PRODUCTS;
Replacement: CALCITE
IN VESICLES;
CHLORITE
IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1350 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 593.35
Core: 25 Top of Core Depth (m) : 590.50
Sect: 2 Top of Section Depth(m): 592.00
LITHOLOGY: APHYRIC BASALT;
SIMILAR TO CORE 25-1;
Piece No. : PCE 1A (0-42), 1B (44-55), 1C (56-72), 1D (73-94),
1E (95-115), 1F (116-135);
Texture : APHYRIC, FINE-GRAINED;
Alteration : MOD
PCE 1A;
SLIGHTLY
PCES 1B+1C+1D+1G+1F;
Comments : GRAY BASALT PCE 1A, DARK GRAY BASALT ALL OTHERS, NEW
FLOW AT 40CM;
Vesicles : Size(mm): <2 Percent: <1
Location: Filling: CHLORITE,CALCITE
PCE 1A;
Size(mm): Percent: 0
PCES 1B+1C+1D+1E+1F, NEW FLOW;
Replacement: CALCITE
IN VESICLES;
CHLORITE
IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 870 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 594.37
Core: 25 Top of Core Depth (m) : 590.50
Sect: 3 Top of Section Depth(m): 593.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-27), 1B (28-46), 1C (47-71), 1D (72-86);
Texture : APHYRIC, FINE-GRAINED;
Alteration : FRESH;
Comments : DARK BASALT;
Leg : 58 Top/Bottom Interval(mm): 870/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 595.00
Core: 25 Top of Core Depth (m) : 590.50
Sect: 3 Top of Section Depth(m): 594.37
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 0/ 50 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 600.05
Core: 26 Top of Core Depth (m) : 600.00
Sect: 1 Top of Section Depth(m): 600.00
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 50/1450 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 601.45
Core: 26 Top of Core Depth (m) : 600.00
Sect: 1 Top of Section Depth(m): 600.05
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (7-20), 1B (21-35), 2 (37-61), 3A (63-77),
3B (78-85), 3C (85-94), 4 (95-97), 5A (100-110),
5B (110-119), 6 (120-128), 7 (130-134), 8 (135-137),
9 (140-144);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY;
Comments : GRAY BASALT;
Vesicles : Size(mm): <2 Percent: 5-7
VESICLES IN PCES 3A+3B+3C+4;
Size(mm): <1 Percent: 1
Location: Filling: CALC,CHLORITE
VESICLES THROUGHOUT SECTION;
Replacement: CHLORITE
IN VESICLES;
CALCITE
IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1450 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 602.95
Core: 26 Top of Core Depth (m) : 600.00
Sect: 2 Top of Section Depth(m): 601.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-10), 1B (10-17), 2 (20-23), 3 (25-33),
4 (35-44), 5A (46-54), 5B (55-58), 5C (59-72),
6A (74-82), 6B (83-87), 7 (90-100), 8 (102-110),
9A (113-121), 9B (120-127), 10 (130-138),
11 (140-144);
Texture : APHYRIC, FINE-GRAINED;
Structure : VEIN FILLED WITH CALCITE AND CHLORITE;
Alteration : SLIGHTLY
A LITTLE FRESHER THAN SECTION BEFORE;
Vesicles : Size(mm): <1 Percent: <1
Location: Filling: CHLORITE
Replacement: CALCITE
IN VEIN;
CHLORITE
IN VEIN AND VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 550 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 603.55
Core: 26 Top of Core Depth (m) : 600.00
Sect: 3 Top of Section Depth(m): 603.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-14), 2 (15-18), 3 (20-28), 4A (30-32),
4B (33-42), 4C (43-52), 4D (52-55);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY;
Leg : 58 Top/Bottom Interval(mm): 550/1070 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 604.07
Core: 26 Top of Core Depth (m) : 600.00
Sect: 3 Top of Section Depth(m): 603.55
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 1070/1500 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 604.50
Core: 26 Top of Core Depth (m) : 600.00
Sect: 3 Top of Section Depth(m): 604.07
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 5 (108-111), 6 (114-117), 7A (120-124),
7B (123-134), 7C (135-148);
Texture : APHYRIC, FINE-GRAINED;
Comments : NEXT LAVA FLOW BEGINS ON THIS INTERVAL,
DARK GRAY BASALT, 0-55CM SIMILAR TO CORE 26-2;
Alteration : SLIGHTLY;
Vesicles : Size(mm): <2 Percent: 1
Location: Filling: CALC,CHLORITE
FOR INTERVAL 107-150;
Replacement: CALCITE
IN VESICLES;
CHLORITE
IN VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 440 Analyst: Nisterenko, G.
Hole: 446A Sample Midpoint (m) : 604.94
Core: 26 Top of Core Depth (m) : 600.00
Sect: 4 Top of Section Depth(m): 604.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-11), 1B (11-23), 1C (23-26), 2A (27-32),
2B (33-43);
Texture : APHYRIC, FINE-GRAINED, CHILL ZONE IN PCES 2A+2B,
GLASS IN PCE 2A, FINE-GRAINED TO APHANITIC IN
PCE 2A, NEXT LAVA FLOW BEGINS WITH PCE 2A;
Structure : VEIN WITH CALCITE IN INTERVAL 27-43CM;
Alteration : SLIGHTLY
PCES 1A+1B+1C;
FRESH
PCES 2A+2B;
Comments : DARK BASALT, NEW LAVA FLOW AT 27CM;
Groundmass : GRADES TO APHANITIC IN 2A+2B;
Replacement: CALCITE
IN VEIN;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 611.00
Core: 27 Top of Core Depth (m) : 609.50
Sect: 1 Top of Section Depth(m): 609.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-3), 2 (5-12), 3 (13-16), 4 (20-23),
5A (24-30), 5B (31-36), 5C (37-40), 6 (41-51),
7 (53-55), 8 (57-62), 9A (63-68), 9B (69-72),
9C (72-85), 9D (84-87), 10 (90-95), 11 (97-102),
12 (104-108), 13 (110-117), 14 (117-121),
15 (123-126), 16 (127-131), 17 (134-140),
18 (143-149);
Texture : APHYRIC;
Structure : ODD CALCITE VEIN IN THIS INTERVAL PCES 1-7,
VEINS FILLED WITH CHLORITE/CLAY AND LINED FRACTURES
IN PCES 8-12, VEINS LINED WITH PYR IN PCE 18;
Vesicles : Size(mm): .25-2 Percent: 10
Location: Filling: CARB,PYR,SMEC
PCES 1-7 AMYGDULES;
Size(mm): Percent: 10
Location: Filling: CHLORITE,PYR
PCES 8-12 AMYGDULES, GREENISH CHLORITIC CLAY
MATERIAL AND FINE-GRAINED PYR - ORIGINALLY 10% BUT
FADING OUT;
Size(mm): 30X10 Percent:
Location: Filling: CLAY,PYR
LARGE VUG PARTIALLY FILLED IN PCE 17;
Alteration : MOD;
Comments : GRAY BASALT, DRILLING BRECCIA PCES 6+11+16;
Phenocrysts: POSSIBLY ALTERED MICROPHENOS OF OL IN PCES 2-5C;
Replacement: PYRITE
IN PCES 1-12 AND PCE 17;
CARBONATE
IN PCES 1-7;
SMECTITE
IN PCES 1-7;
CLAY
CLAY IS CHLORITIC, PCES 8-12, DARK CLAY IN PCE 17
VUG;
Leg : 58 Top/Bottom Interval(mm): 0/1450 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 612.45
Core: 27 Top of Core Depth (m) : 609.50
Sect: 2 Top of Section Depth(m): 611.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-4), 2 (5-14), 3 (15-27), 4A (30-34),
4B (33-42), 5 (44-47), 6 (49-52), 7 (54-57),
8 (58-62), 9 (63-72), 10 (74-78), 11 (81-84),
12 (86-93), 13 (94-106), 14A (110-116),
14B (117-127), 14C (127-129), 14D (129-136),
14E (132-137), 15 (139-144);
Texture : APHYRIC;
Structure : VEINS LINED WITH CROSS CUTTING CLAY AND PYRITE, 3MM
VEIN WITH EUHEDRAL CARB XTLS PCE 15, CLAYEY FILLED
VEIN 1CM THICK PCE 4B;
Alteration : MOD;
Comments : DARK GRAY BASALT;
Vesicles : Size(mm): .25-10 Percent:
Location: Filling: CLAY
OCCASIONAL VESICLES LINED OR FILLED BY DARK
CLAY MINERALS;
Size(mm): <.25 Percent: 10
Location: Filling: CLAY
VERY FINE VESICLES PCES 13-14E;
Phenocrysts: PLAGIOCLASE
Size(mm): .5-1
OCCASIONAL PLAG PHENOS;
OLIVINE
OCCASIONAL ALTERED OL;
SOME MICROPHENOS OF ALTERED OL (?);
Replacement: CLAY
CARBONATE
IN VEIN PCE 15;
PYRITE
Leg : 58 Top/Bottom Interval(mm): 1450/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 612.50
Core: 27 Top of Core Depth (m) : 609.50
Sect: 2 Top of Section Depth(m): 612.45
LITHOLOGY: SEDIMENT
Leg : 58 Top/Bottom Interval(mm): 0/ 70 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 619.07
Core: 28 Top of Core Depth (m) : 619.00
Sect: 1 Top of Section Depth(m): 619.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-7);
Texture : APHYRIC, APHANITIC;
Alteration : MOD;
Comments : OUTER SURFACES OF PCES COVERED BY DARK GREEN
CHLORITIC MATERIAL WITH VERY FINE PYRITE OR DARK
GRAY CLAYEY MATERIAL, POSSIBLY UPHOLE CONTAMINATION;
Vesicles : Size(mm): .5-1 Percent:
Location: Filling: SMEC
ODD VESICLE LINES WITH LIGHT OLIVE GREEN CLAY
(SMEC), ODD QUARTZ OR ZEOL GRAIN IN VESICLE ON
OUTER SURFACE OF ONE PIECE;
Replacement: SMECTITE
IN VESICLE;
PYRITE
ID UNCERTAIN, POSSIBLY COVERING SURFACES OF PCES;
QUARTZ
ID UNCERTAIN, POSSIBLY A GRAIN IN VESICLE;
ZEOLITE
ID UNCERTAIN, POSSIBLY A GRAIN IN VESICLE;
Leg : 58 Top/Bottom Interval(mm): 70/1500 Analyst: Marsh, N.
Hole: 446A Sample Midpoint (m) : 620.50
Core: 28 Top of Core Depth (m) : 619.00
Sect: 1 Top of Section Depth(m): 619.07
LITHOLOGY: SEDIMENT;
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