Leg : 45 Top/Bottom Interval(mm): 660/ 800 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 88.40
Core: 3 Top of Core Depth (m) : 87.60
Sect: 1 Top of Section Depth(m): 88.26
LITHOLOGY: DRILL CUTTINGS;
Comments : CUTTINGS OF FINE-GRAINED APHYRIC BASALT AND
SERPENTINIZED PERIDOTITE AND MINOR FORAMS AND
CLAY.MINS, 66-69CM FORAM-NANNO OOZE AND DRILLING
CUTTINGS;
Leg : 45 Top/Bottom Interval(mm): 800/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 89.10
Core: 3 Top of Core Depth (m) : 87.60
Sect: 1 Top of Section Depth(m): 88.40
LITHOLOGY: SERPENTINIZED PERIDOTITE;
Piece No. : PCE 1 (82-85), 2 (86-94), 3 (96-98), 5 (132-138);
Texture : OPX AUGEN UP TO 1CM IN PCES 1-2 AND 5, PLAG 50% IN
PCE 3 (SIZE UP TO 0.5CM);
Structure : TALCOSE VEINLETS IN PCES 1-2 AND 5, ASBESTOS
VEINLETS IN PCES 2 AND 3;
Alteration : MOD;
Comments : MAY REPRESENT A TALUS OR GRAVEL LAYER ABOVE BASALT-
ESPECIALLY SINCE PCE 2 APPEARS CORED;
Groundmass : OLIVINE
SERPENTINIZED OL IN PCES 2 AND 5;
PLAGIOCLASE ( 50%)
Size(mm): TO 5
PCE 3;
ORTHOPYROXENE
Size(mm): TO 10
PCES 1-2 + 5;
Replacement: TALC
Minerals Replaced: OL
SERPENTINITE
Leg : 45 Top/Bottom Interval(mm): 800/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 89.10
Core: 3 Top of Core Depth (m) : 87.60
Sect: 1 Top of Section Depth(m): 88.40
LITHOLOGY: PILLOW MARGIN;
Piece No. : PCE 4 (100-105), 6 (138-144), 7 (144-150);
Texture : APHANITIC, VARIOLITIC, GLASSY RIM IN PCE 4, LARGE
VARIOLITES (UP TO 1CM) ON PCE 4 AND 7;
Alteration : SLIGHTLY
ALTERED MARGINS ON PCE 4 AND 6;
Comments : PCES IN THE ENTIRE SECTION WERE REMOVED FROM THEIR
MATRIX OF CUTTINGS AND FORAM-NANNO OOZE FOR EASE OF
DESCRIPTION AND HANDLING, THE VARIOLITIC BASALTS
ARE SIMILAR TO THOSE OF THE APHYRIC BASALT OF HOLE
395 AND ARE INFERRED TO REPRESENT FIRST CONTACT WITH
BASEMENT IN HOLE 395A;
Vesicles : Size(mm): <1 Percent: RARE
VESICLES ARE RARE AND EMPTY;
Leg : 45 Top/Bottom Interval(mm): 1050/1300 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 88.90
Core: 3 Top of Core Depth (m) : 87.60
Sect: 1 Top of Section Depth(m): 88.65
LITHOLOGY: DRILL CUTTINGS;
Comments : FRAGMENTS (SIZE UP TO 3CM) OF SERPENTINIZED
PERIDOTITE (WITH SOME FRESH OL) IN A MIXTURE OF 75%
CLAY AND FORAM-NANNO OOZE;
Replacement: SERPENTINITE
CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 570/1040 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 97.88
Core: 4 Top of Core Depth (m) : 96.84
Sect: 1 Top of Section Depth(m): 97.41
LITHOLOGY: SERPENTINIZED PERIDOTITE;
Piece No. : PCE 1 (57-60), 4 (71-74), 5 (74-76), 6 (77-80),
7 (80-86), 9 (97-104);
Texture : CATACLASTIC (OL) IN PCE 9;
Structure : MAGN VEINLETS IN PCE 5 AND 9, VEINLET (0.5CM THICK)
FILLED WITH TALC AND ZEOLITES IN PCE 5, ASBESTOS
VEINLETS IN PCE 7, FE.OX AND TALC-BEARING VEINLETS
IN PCE 9;
Alteration : EXT
MOD TO INTENSELY SERPENTINIZED AND BEYOND THAT
ALTERED BY CONTACT WITH SEA WATER TO SOME DEGREE;
Comments : NO STATEMENT ABOUT REAL SEQUENCE IS POSSIBLE SINCE
PCES 1-9 ARE SINGLE PEBBLES IN THE CUTTINGS, GNDMASS
GRAY IN PCE 1 AND YELLOWISH GREEN IN PCE 4 AND PALE
GREEN IN PCES 5+6 AND DARK GRAY IN PCES 7 AND 9;
Phenocrysts: ENSTATITE
Size(mm): TO 5
RELICTS OF ENST IN PCE 6;
CLINOPYROXENE ( <1%)
Size(mm): 1-2
PALE GREEN, IN PCE 6;
Replacement: TALC
ZEOLITE
MAGNETITE
SERPENTINITE
Leg : 45 Top/Bottom Interval(mm): 570/1040 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 97.88
Core: 4 Top of Core Depth (m) : 96.84
Sect: 1 Top of Section Depth(m): 97.41
LITHOLOGY: APHYRIC BASALT;
SIMILAR TO BASALTS OF CORE 3;
Piece No. : PCE 2 (62-64), 3 (66-70);
Texture : APHYRIC, APHANITIC;
Alteration : MOD;
Comments : GNDMASS IS GRAY;
Vesicles :
Location: Filling: CLAY
VESICLES ARE MOSTLY EMPTY BUT SOME FILLED WITH
PALE GREEN CLAY.MINS?;
Replacement: CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 570/1040 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 97.88
Core: 4 Top of Core Depth (m) : 96.84
Sect: 1 Top of Section Depth(m): 97.41
LITHOLOGY: GABBRO;
Piece No. : PCE 8 (88-98);
Alteration : MOD;
Groundmass : FELDSPAR (60-70%)
FRESH TO ALTERED FELD;
CLINOPYROXENE (30-40%)
INCLUDING OTHER MAFICS;
Replacement: ZEOLITE
SURFACE PARTLY COVERED WITH RADIAL AGGREGATES OF
ZEOL;
Leg : 45 Top/Bottom Interval(mm): 1070/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 98.34
Core: 4 Top of Core Depth (m) : 96.84
Sect: 1 Top of Section Depth(m): 97.91
LITHOLOGY: DRILL CUTTINGS;
Comments : CUTTINGS ARE PRIMARILY APHYRIC BASALT SAND AND CHIPS
WITH SOME VOLCANIC GLASS AND SERPENTINITE AND
INDIVIDUAL MINERAL GRAINS BROKEN FROM ULTRAMAFIC
ROCKS - OPX AND TALC WITH MINOR FORAMS;
Replacement: SERPENTINITE
TALC
Leg : 45 Top/Bottom Interval(mm): 0/ 410 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 98.75
Core: 4 Top of Core Depth (m) : 96.84
Sect: 2 Top of Section Depth(m): 98.34
LITHOLOGY: DRILL CUTTINGS;
Comments : COMPONENTS ARE FRAGMENTS OF SERPENTINE AND BASALT
AND VOLCANIC GLASS AND PLAG AND FORAMS;
Replacement: SERPENTINITE
Leg : 45 Top/Bottom Interval(mm): 410/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 99.84
Core: 4 Top of Core Depth (m) : 96.84
Sect: 2 Top of Section Depth(m): 98.75
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (45-48), 6 (142-147);
Texture : APHYRIC, FINE-GRAINED, NO GLASS RINDS, NO VARIOLITE
ZONES;
Structure : CARB VEIN IN PCE 6;
Alteration : MOD;
Comments : GNDMASS IS DARK GRAY;
Replacement: CARBONATE
UNSPECIFIED;
Leg : 45 Top/Bottom Interval(mm): 410/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 99.84
Core: 4 Top of Core Depth (m) : 96.84
Sect: 2 Top of Section Depth(m): 98.75
LITHOLOGY: SERPENTINIZED PERIDOTITE;
Piece No. : PCE 2 (49-55), 3 (56-70);
Texture : LARGE ALTERED OPX AUGEN;
Structure : MANY CHRYSOTILE VEINLETS;
Alteration : EXT;
Groundmass : GNDMASS IS COMPOSED OF SERP AND TALC;
Replacement: SERPENTINITE
TALC
Minerals Replaced: OPX
OPX AUGEN ALTERED TO LARGE TALC GRAINS;
CHRYSOTILE
Leg : 45 Top/Bottom Interval(mm): 410/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 99.84
Core: 4 Top of Core Depth (m) : 96.84
Sect: 2 Top of Section Depth(m): 98.75
LITHOLOGY: GABBRO;
Piece No. : PCE 4 (70-76), 5 (136-141);
Alteration : EXT;
Groundmass : FELSIC (40-60%)
GRAIN SIZE OF MAFIC MINERALS IS 1.5-3MM, PLAG
GRAIN SIZE IS 2-6MM;
Replacement: AMPHIBOLE
SOME PARTS REPLACED BY AMPH, SAUSSERITIZATION?;
Leg : 45 Top/Bottom Interval(mm): 410/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 99.84
Core: 4 Top of Core Depth (m) : 96.84
Sect: 2 Top of Section Depth(m): 98.75
LITHOLOGY: DRILL CUTTINGS;
Piece No. : PCE INTERVAL 78-123CM;
Comments : COMPONENTS ARE FRAGMENTS OF SERP AND BASALTS AND
VOLC.GLAS AND PLAG AND FORAMS;
Replacement: SERPENTINITE
Groundmass : PLAGIOCLASE
Leg : 45 Top/Bottom Interval(mm): 0/ 370 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 106.53
Core: 5 Top of Core Depth (m) : 106.16
Sect: 1 Top of Section Depth(m): 106.16
LITHOLOGY: SERPENTINIZED PERIDOTITE;
PCES 1 AND 4 SIMILAR TO THOSE OF CORE 3 AND 4;
Piece No. : PCE 1 (0-5), 4 (16-20);
Texture : TALC AUGEN IN PCE 4;
Alteration : EXT;
Replacement: SERPENTINITE
TALC
Minerals Replaced: ENSTATITES
ENSTATITES IN PCE 4 ALTERED TO TALC;
Leg : 45 Top/Bottom Interval(mm): 0/ 370 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 106.53
Core: 5 Top of Core Depth (m) : 106.16
Sect: 1 Top of Section Depth(m): 106.16
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 2 (5-12);
Texture : APHYRIC;
Alteration : MOD;
Vesicles :
Location: Filling: CLAY
VESICULAR, FILLED WITH DARK GREEN CLAY;
Leg : 45 Top/Bottom Interval(mm): 0/ 370 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 106.53
Core: 5 Top of Core Depth (m) : 106.16
Sect: 1 Top of Section Depth(m): 106.16
LITHOLOGY: PLAG-OL MOD MICROPHYRIC BASALT;
Piece No. : PCE 3 (12-16), 5 (20-24), 6 (24-29), 7 (29-33),
8 (33-37);
Texture : PLAG-OL MICROPHYRIC, MEDIUM-GRAINED,
MICROPORPHYRITIC, PCE 7 CONTAINS XENOCRYSTS OF
UNSPECIFIED PYROXENE;
Alteration : MOD;
Phenocrysts: PLAGIOCLASE ( <5%)
IN PCE 5;
PYROXENE
PCE 7;
Leg : 45 Top/Bottom Interval(mm): 370/ 600 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 106.76
Core: 5 Top of Core Depth (m) : 106.16
Sect: 1 Top of Section Depth(m): 106.53
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 9 (37-42), 10 (42-50), 11 (50-55), 12 (55-60);
Texture : APHYRIC, FINE-GRAINED;
Alteration : MOD
PCES 9 AND 10;
EXT
PCES 11 AND 12;
Vesicles : PCE 9 IS VESICULAR;
Location: Filling: CLAY,CARB
PCES 10 AND 11 ARE MORE VESICULAR WITH LIGHT
GREEN CLAY MINERALS AND CARB FILLING;
Size(mm): Percent: 10
PCE 12 IS VERY VESICULAR;
Replacement: CLAY MINERALS
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 600/ 780 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 106.94
Core: 5 Top of Core Depth (m) : 106.16
Sect: 1 Top of Section Depth(m): 106.76
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 13 (60-64), 14 (64-74), 15 (74-78);
Texture : APHYRIC, MEDIUM-GRAINED;
Alteration : MOD;
Vesicles :
Location: Filling: CLAY
VESICULAR, FILLED WITH LIGHT GREEN CLAY MINERALS;
Replacement: CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 780/1420 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 107.58
Core: 5 Top of Core Depth (m) : 106.16
Sect: 1 Top of Section Depth(m): 106.94
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 16A (78-85), 16B (85-93), 16C (93-99),
16D (99-104), 16E (104-110), 16F (110-115),
16G (115-120), 17 (122-124), 18 (124-129),
19A (129-135), 19B (135-142);
Texture : APHYRIC, COARSE-GRAINED;
Structure : PCE 16D CONTAINS A CARB VEIN;
Alteration : MOD;
Vesicles : Size(mm): 1 Percent: 1
Location: Filling: CLAY
VESICLES FILLED WITH GREEN CLAY;
Groundmass : PLAGIOCLASE
RADIAL AGGREGATES OF LARGE PLAG QUENCH CRYSTALS;
Replacement: CLAY MINERALS
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 1420/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 107.66
Core: 5 Top of Core Depth (m) : 106.16
Sect: 1 Top of Section Depth(m): 107.58
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 20 (142-146), 21 (147-150);
Texture : APHYRIC;
Alteration : EXT;
Vesicles : Size(mm): Percent: 10
Location: Filling: CLAYS
HIGHLY VESICULAR, VESICLES ARE FILLED WITH YELLOW
BROWN TO PALE YELLOW MATERIAL DOMINANTLY CLAYS;
Replacement: CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 0/ 150 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 107.81
Core: 5 Top of Core Depth (m) : 106.16
Sect: 2 Top of Section Depth(m): 107.66
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1 (0-8), 2 (10-15);
Texture : MOD PHYRIC, FINE-GRAINED;
Alteration : MOD;
Vesicles : Size(mm): Percent: 2
Location: Filling: CLAY
IN PCE 1 VESICLES ARE FILLED WITH DARK GREEN CLAY;
Size(mm): Percent: 1
Location: Filling: CLAY
IN PCE 2 VESICLES FILLED WITH DARK GREEN CLAY(?);
Replacement: CLAY MINERALS
DARK GREEN;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Natland, J.
Hole: 395A Sample Midpoint (m) : 116.92
Core: X 5 Top of Core Depth (m) : 115.42
Sect: Top of Section Depth(m): 115.42
LITHOLOGY: DRILL CUTTINGS;
Comments : CORE SECTIONS 1-4 ARE DRILL CUTTINGS CONTAINING
BASALT FRAGMENTS, ANGULAR GRAINS, BASALTIC GLASS AND
MINOR FORAMINIFERA;
Leg : 45 Top/Bottom Interval(mm): 1250/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 116.92
Core: 6 Top of Core Depth (m) : 115.42
Sect: 1 Top of Section Depth(m): 116.67
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (127-133), 2 (136-148);
Texture : APHYRIC, MEDIUM-GRAINED, PCE 2 IS SLIGHTLY COARSER
GRAINED;
Alteration : MOD;
Vesicles : Size(mm): 1 Percent: 1
Location: Filling: CLAY
VESICLES ARE FILLED WITH GREENISH GRAY CLAY;
Phenocrysts: OLIVINE
Size(mm): 1.2
OL MICROPHENOS, ELONGATED CRYSTALS (QUENCH OL?)
Replacement: CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 570/1320 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 117.32
Core: 7 Top of Core Depth (m) : 116.00
Sect: 1 Top of Section Depth(m): 116.57
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (57-63), 2 (65-70), 3 (72-77), 4 (79-84),
5 (86-94), 6 (96-101), 7 (103-107), 8 (108-116),
9 (118-124), 10 (125-132);
Texture : APHYRIC, FINE-GRAINED, ELONGATED OL VISIBLE IN THE
GLASSY TO NEAR GLASSY PCES, PCE 5 IS SLIGHTLY
COARSER GRAINED, IN COARSER PCES PLAG IS ACICULAR
SUBRADIAL AND IS ASSOCIATED WITH EUHEDRAL OLIVINES
WITHOUT SKELETAL EXTENSIONS;
Alteration : MOD
PCES 2+4-10;
SLIGHTLY
PCES 1+3;
PCE 4 WEATHERED SURFACE SHOWS RADIAL AGGREGATES OF
PLATY QUENCHED OL;
Comments : PCES 1-10 APPEAR TO BE 1 COOLING UNIT FINER GRAINED
TOWARD THE TOP AND BOTTOM, PCE 2 SPOTTED WITH MN;
Vesicles : Size(mm): 1 Percent: <1
Location: Filling: CLAY,CARB
IN PCES 2+3+5, PCES 6-10 SLIGHTLY LESS VESICULAR,
PCES 2+3+5-10 FILLED WITH BROWNISH GRAY CLAY
AND/OR CARB;
Size(mm): 0.5 Percent:
VESICLES IN PCE 4 ARE .5MM IN DIAMETER;
Phenocrysts: OLIVINE ( 5%)
PCE 1 HAS 5% OL;
Replacement: CLAY MINERALS
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 1350/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 117.50
Core: 7 Top of Core Depth (m) : 116.00
Sect: 1 Top of Section Depth(m): 117.35
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 11 (135-139), 12 (140-147);
Texture : PCE 11 APHYRIC-GLASSY, PCE 12 APHYRIC AND VARIOLITIC
-VARIOLITES 5MM-1CM DIAMETER;
Alteration : SLIGHTLY
PCE 11;
MOD
PCE 12;
GNDMASS GLASSY MATRIX INTENSELY ALTERED IN PCE 12;
Vesicles : Size(mm): <1 Percent: 2
IN PCE 11, VESICLES ARE ALMOST EMPTY;
Size(mm): 5-10 Percent: 10
Location: Filling: CLAY,CALCITE
IN PCE 12;
Replacement: CALCITE
CLAY
PALAGONITE
PALAG APPEARS ON THE WEATHERED SIDE OF PCE 11;
Leg : 45 Top/Bottom Interval(mm): 0/ 450 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 125.54
Core: 8 Top of Core Depth (m) : 125.09
Sect: 1 Top of Section Depth(m): 125.09
LITHOLOGY: OL MOD MICROPHYRIC BASALT;
Piece No. : PCE 1 (3-9), 2 (11-15), 3 (11-15), 4A (17-23),
4B (23-26), 5 (29-34), 6 (35-40), 7 (40-45);
Texture : OL MICROPHYRIC, VARIOLITIC WITH VARIOLES<1CM
(POSSIBLY QUENCH OL), PCE 5 LESS VARIOLITIC,
MICROPORPHYRITIC;
Alteration : MOD
HALF OF PCE 1 IS ALTERED TO LIGHT BROWN-WEATHERED
SURFACE COATED THINLY WITH PALAG WITH MN SPOTS,
PCES 2-4B SOME ELONGATED QUENCH CRYSTALS ALTERED
TO REDDISH BROWN MINERALS, PCES 4A-4B SHOW INTENSE
ALTERATION ALONG CRACKS;
Comments : PCES 1-7 PART OF 1 COOLING UNIT-UPPER BOUNDARY ABOVE
PCE 1, MN SPOTS ON HALF OF PCE 1;
Vesicles : Size(mm): 0.5 Percent: <1
IN PCE 1;
Size(mm): Percent: 0
PCES 2-4B+6+7 NONVESICULAR;
Size(mm): Percent: 2
Location: Filling: CLAY
PCE 5 MORE VESICULAR WITH A DRUSE 5MM LINED WITH
ACICULAR BLACK MINERAL (CPX?) AND WHITE
MINERAL(?), VESICLES FILLED WITH A LIGHT GREEN
CLAY;
Phenocrysts: OLIVINE
MICROPHENOS;
Replacement: CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 450/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 126.59
Core: 8 Top of Core Depth (m) : 125.09
Sect: 1 Top of Section Depth(m): 125.54
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 8 (46-56), 9 (46-56), 10 (45-56), 11 (57-64),
12 (65-67), 13 (65-67), 14 (71-76), 15 (77-82),
16 (83-89), 17A (91-94), 17B (94-97), 18 (98-102),
19 (103-110), 20 (112-120), 21 (121-130),
22 (130-137), 23 (139-143), 34 (144-148);
Texture : APHYRIC, PCES 8-14 GLASSY, PCES 15-22 FINE-GRAINED
WITH OL MICROPHENOS, QUENCH PLATY CRYSTALS (OL) ARE
ABUNDANT, LARGE AMOUNTS OF QUENCH OL (30%), PCES 11+
19-21 ARE VARIOLITIC;
Structure : PCES 15+19-22 CONTAIN THIN VEINLETS OF CALCITE;
Alteration : MOD;
SLIGHTLY
PCES 8-10+12+13;
PCES 8-11 WEATHERED SURFACES COVERED WITH PALAG;
Comments : PCES 8-10 HAVE MN SPOTS, PCES 8-17 ARE ONE COOLING
UNIT;
Vesicles : Size(mm): Percent: 3
Location: Filling: CLAY
IN PCES 8-10+12-13+18-22, VESICLES IN PCES 18-22
ARE FILLED WITH LIGHT GREEN TO BROWN (OXIDIZED
PART) CLAY MINERALS;
Size(mm): 0.2-1 Percent: 5
IN PCE 14;
Size(mm): Percent: 2
IN PCE 11;
Size(mm): Percent: 1
Location: Filling: CLAY
IN PCES 23-24, VESICLES FILLED WITH CLAY;
PCES 15-17B CONTAIN NO VESICLES;
Phenocrysts: OLIVINE ( 1%)
MICROPHENOS, IN PCES 15-22;
Replacement: CLAY MINERALS
CALCITE
PALAGONITE
Leg : 45 Top/Bottom Interval(mm): 680/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 136.12
Core: 9 Top of Core Depth (m) : 134.62
Sect: 1 Top of Section Depth(m): 135.30
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (68-79), 2 (80-89), 3 (90-95), 4 (97-103),
5 (105-109), 6 (110-115), 7 (118-125), 8 (127-137),
9 (138-149);
Texture : APHYRIC, PCES 2-9 VARIOLITIC, PCE 6 IS LESS
VARIOLITIC THAN 5, PCE 7 VARIOLITES OF PLAG AND/OR
OL (BROWNISH ALTERED) QUENCH NEEDLES, VARIOLITES IN
PCE 8 1CM BROWN-GREEN IN A DARK GREY (GLASSY)
MATRIX;
Structure : PCES 3 AND 4 HAVE CALCITE VEINLETS;
Alteration : MOD
PCES 2 AND 4-9;
SLIGHTLY
PCES 1 AND 3;
ALTERATION INTENSE ALONG AREOLE, PCE 3 SHOWS
CARB ENCRUSTING THE SURFACE;
Comments : SECTION APPEARS TO BE COMPOSED OF A NUMBER OF FLOWS,
COOLING BOUNDARIES ABOVE PCES 2 AND 3 AND 8 - THIS
REPRESENTS THE MINIMUM NUMBER OF COOLING UNITS,
VARIOLITES IN PCES 2 AND 5 AND 6 ARE GREY IN A
YELLOW BROWNISH MATRIX, VARIOLITES IN PCE 4 BROWN-
GREEN IN A DARK GRAY MATRIX, VARIOLITES IN PCE 9
GRAY SET IN A BROWNISH-GREEN MATRIX, GNDMASS IN PCE
2 YELLOW BROWNISH, PCES 4 AND 8 DARK GRAY, PCE 9
BROWNISH-GREEN;
Vesicles : Size(mm): 0.2 Percent: <1
Location: Filling: CLAY
IN PCE 1, VESICLES FILLED WITH GREY GREEN
MATERIAL(CLAY?);
Size(mm): Percent: 5
IN PCES 3-4+8, IN PCE 3 FILLED WITH PALE GREEN
AND WHITE MATERIAL;
Size(mm): <1 Percent: <2
IN PCES 2+5+6;
Replacement: CLAY
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 137.62
Core: 9 Top of Core Depth (m) : 134.62
Sect: 2 Top of Section Depth(m): 136.12
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-6), 2 (7-13), 3 (16-29), 4 (30-39),
5 (40-47), 6 (49-55), 7 (56-61), 8 (63-67),
9 (69-79), 10 (80-90), 11 (92-97), 12 (99-105),
13 (107-112), 14 (114-120), 15 (122-127),
16 (129-134), 17 (136-143), 18 (145-149);
Texture : APHYRIC, PCES 1 AND 4-11 AND 13-15 VARIOLITIC;
Structure : PCE 3 SHOWS A CRACK ON THE RIGHT SIDE OF THE
ORIENTED PCE, PCE 9 IS LAYERED - GLASSY-VESICULAR-
VARIOLITIC (SIMILAR TO PCE 8) AT THE BOTTOM;
Alteration : MOD
PCE 4 AND 6-7 AND 9-11 AND 13-18;
SLIGHTLY
PCES 1 AND 5 AND 8;
FRESH
PCES 2+3 AND 12;
Comments : COOLING UNIT BOUNDARIES PLACED ABOVE PCE 4 AND PCE
9(NOTE THIS REPRESENTS THE MINIMUM NUMBER OF
COOLING UNITS-VARIOLITIC PCES ARE UNUSUALLY
ABUNDANT SUGGESTING A LARGE NUMBER OF THIN FLOWS
WERE DRILLED), VARIOLES IN PCE 6 GREY-GREEN IN THE
CTR GOING TO BRN-YELLOW ON THE RIM, VARIOLES IN PCE
7 ARE GRAY-YELLOW, VARIOLES IN PCE 8 SET IN A YELLOW
BROWN MATRIX, VARIOLES IN PCES 13-15 GRAY IN A BROWN
MATRIX, PCES 2-3 AND 12 GREY, PCES 16-18 PALE GREY,
PCE 7 GREY YELLOW, PCE 8 YELLOW BROWN;
Vesicles : Size(mm): Percent: 3
Location: Filling: CLAY
3% VESICLES IN PCE 6, PCES 6 AND 1 AND 9 FILLED
WITH PALE GEEEN CLAY?;
VESICLES IN PCES 3 AND 12 FILLED WITH DARK GREEN
MATERIAL (CLAY?), SOME VESICLES IN PCES 10-11
FILLED WITH YELLOW-GREEN MATERIAL (CLAY?);
Size(mm): Percent: 1
Location: Filling: CLAY
IN PCES 16-18 VESICLES FILLED ARE 1% AND FILLED
WITH DARK BROWN CLAY;
Replacement: CLAY
Leg : 45 Top/Bottom Interval(mm): 1250/1500 Analyst:
Hole: 395A Sample Midpoint (m) : 145.52
Core: 10 Top of Core Depth (m) : 144.02
Sect: 1 Top of Section Depth(m): 145.27
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (125-129), 2 (131-139), 3A (141-149),
3B (141-149);
Texture : APHYRIC, PCES 1 AND 3A-3B VERY FINE-GRAINED, PCE 2
IS FINER GRAINED THAN PCE 1, PCE 1 SHOWS ELONGATED
QUENCH OL ON WEATHERED EDGE;
Alteration : MOD;
Vesicles : IN PCE 1 A FEW SMALL VESICLES;
Size(mm): <1 Percent:
Location: Filling: CELAD
IN PCE 2 MORE VESICULAR THAN 1, FILLED WITH GREEN
MINERAL (CELAD?);
Size(mm): Percent: 0
NO VESICLES IN PCES 3A-3B;
Replacement: CLAY MINERALS
CELADONITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 550/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 155.03
Core: 11 Top of Core Depth (m) : 153.53
Sect: 1 Top of Section Depth(m): 154.08
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (56-68), 2 (70-75), 3 (77-84), 4 (86-92),
5 (93-100), 6 (102-106), 7 (108-114), 8 (116-130),
9 (132-139), 10 (141-148);
Texture : APHYRIC, FINE-GRAINED, SOMEWHAT COARSER THAN
SUBVARIOLITIC EXCEPT FOR PCE 3, PCE 3 IS VARIOLITIC
WITH QUENCH NEEDLES OF OL, ALL PCES EXCEPT 3 SHOW A
FINE FELTY TEXTURED ACICULAR PLAG;
Alteration : MOD
PCES 1-6 AND 8-10, NOTE- PCES 1 AND 4-6 AND 8-10
HALF ALTERED;
FRESH
PCE 7;
MOST INTENSE WEATHERING FOLLOWS CRACKS AT EDGES
OF PCES;
Vesicles : Size(mm): <1 Percent: 5-10
IN PCES 1-2, FILLED WITH DARK GREY MATERIAL;
Size(mm): <1 Percent: 3
IN PCES 4-6 FILLED WITH DARK GRAY MATERIAL;
Size(mm): <1 Percent: <1
IN PCES 9-10 FILLED WITH GREY AND GREY GREEN
MATERIAL;
Replacement: CLAY
Groundmass : PLAGIOCLASE
OLIVINE
Leg : 45 Top/Bottom Interval(mm): 1140/1480 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 164.54
Core: 12 Top of Core Depth (m) : 163.06
Sect: 1 Top of Section Depth(m): 164.20
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (140-148);
Texture : APHYRIC, FINE-GRAINED, SUBVARIOLITIC;
Alteration : MOD
OL ALTERATION VISIBLE-BROWN SPECKS;
Comments : MN SPECKS ON ONE SURFACE;
Replacement: MANGANESE OXIDE
Leg : 45 Top/Bottom Interval(mm): 540/ 690 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 173.13
Core: 13 Top of Core Depth (m) : 172.44
Sect: 1 Top of Section Depth(m): 172.98
LITHOLOGY: SERPENTINIZED PERIDOTITE;
Piece No. : PCE 1 (54-61), 2 (63-69);
Texture : PCE 1 ENSTATITE AUGEN 20% (SIZE .5X1.5CM), PCE 2
ENSTATITE AUGEN;
Alteration : EXT
PCE 2 IS SIMILAR TO PCE 1 BUT HAS BEEN OXIDIZED
AND/OR WEATHERED TO YELLOW BROWN (DUE TO GOETHITE
AFTER MAGNETITE?);
Comments : NOTE THIS SEQUENCE IS IDENTICAL TO THE CARB
CEMENTED SERPENTINITE BRECCIA OF HOLE 395 EXCEPT
THE CARB BRECCIA MATRIX IS ABSENT-THIS MAY BE DUE
TO LOW RECOVERY IN THIS CORE IN BOTH HOLES 395 AND
395A THERE IS A SERPENTINITE BRECCIA OR GRAVEL ZONE
BETWEEN THE UPPER APHYRIC BASALTS (LITH. UNIT 2) AND
THE PLAG-OL PHYRIC BASALTS OF UNIT 4 THE BRECCIA
IS GIVEN A SEPARATE DESIGNATION-UNIT 3;
Groundmass : MAGNETITE
ID UNCERTAIN FOR MAGN;
ENSTATITE
Replacement: SERPENTINITE
GOETHITE
Leg : 45 Top/Bottom Interval(mm): 720/ 770 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 173.21
Core: 13 Top of Core Depth (m) : 172.44
Sect: 1 Top of Section Depth(m): 173.16
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 3 (72-77);
Texture : APHYRIC, NO VISIBLE CRYSTALS;
Alteration : FRESH;
Comments : SMALL ANGULAR PCES, VERY DARK GRAY;
Vesicles : VESICULAR;
Leg : 45 Top/Bottom Interval(mm): 780/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 173.94
Core: 13 Top of Core Depth (m) : 172.44
Sect: 1 Top of Section Depth(m): 173.22
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 4 (78-85), 5 (87-94), 6 (96-103), 7 (105-111),
8 (113-119), 9 (121-127), 10 (129-137),
11 (139-148);
Texture : PLAG-OL PHYRIC, FINE-GRAINED;
Alteration : MOD
PCES 4+5+8-11;
SLIGHTLY
PCES 6+7;
FRESH
PART OF PCE 11;
Vesicles : Size(mm): Percent: <1
Location: Filling: CLAY
VESICLES FILLED WITH PALE GREEN CLAY, PCE 4
VESICLES FILLED WITH BROWNISH MATERIAL;
Phenocrysts: PLAGIOCLASE (15-30%)
OLIVINE ( 1-2%)
Replacement: CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 183.48
Core: 14 Top of Core Depth (m) : 181.98
Sect: 1 Top of Section Depth(m): 181.98
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1 (1-8), 2 (10-13), 3 (15-21), 4 (23-30),
5 (32-40), 6 (42-54), 7 (56-63), 8 (65-70),
9 (72-76), 10 (78-83), 11 (78-83), 12 (86-99),
13 (100-108), 14 (110-115), 15 (116-120),
16 (113-116), 17A (129-148), 17B (129-148);
Texture : PLAG-OL PHYRIC;
Alteration : MOD
PCES 4+5+7-11+13-17;
FRESH
PCES 1-3+6+12;
Vesicles : Size(mm): 1-2 Percent: <1
Location: Filling: CLAY
PCES 1-3 AND 7-11 HAVE VESICLES FILLED WITH GREEN
TO WHITE CLAY;
Phenocrysts: OLIVINE ( 1%)
PLAGIOCLASE
Size(mm): TO 10
IN PCE 1;
PLAGIOCLASE
Size(mm): TO 0.5
IN PCES 2 AND 3;
PLAGIOCLASE ( 20%)
Size(mm): TO 10
IN PCES 4-6;
PLAGIOCLASE ( 20%)
Size(mm): TO 10
IN PCES 7-11 AND 17A AND 17B;
PLAGIOCLASE ( 25%)
Size(mm): 7.5
OLIVINE ( 1%)
Size(mm): TO 5
IN PCES 12-16;
Replacement: CLAY
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 184.98
Core: 14 Top of Core Depth (m) : 181.98
Sect: 2 Top of Section Depth(m): 183.48
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1 (2-5), 2 (8-20), 3 (22-30), 4 (32-37),
5A (30-50), 5B (50-58), 5C (58-68), 6 (71-75),
7 (76-79), 8A (82-89), 8B (89-98), 8C (98-111),
8D (111-120), 9 (123-133), 10A (136-147),
10B (136-147);
Texture : PLAG-OL PHYRIC, PORPHYRITIC;
Alteration : MOD;
Vesicles : Size(mm): 1-2 Percent: <1
VESICLES FILLED WITH GREEN AND BROWN MATERIAL;
Phenocrysts: OLIVINE ( <1%)
PLAGIOCLASE ( 20%)
Size(mm): TO 10
NO VARIATION IN THE GRAIN SIZE OF PLAG PHENOS,
MAX SIZE 1CM;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 186.48
Core: 14 Top of Core Depth (m) : 181.98
Sect: 3 Top of Section Depth(m): 184.98
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1 (3-7), 2 (9-17), 3 (19-26), 4 (28-34),
5 (37-42), 6A (44-52), 6B (52-61), 6C (61-64),
6D (64-70), 6E (70-76), 6F (66-93 LEFT SIDE OF
CORE), 6G (80-111), 6H (111-131), 6I (131-148);
Texture : PLAG-OL PHYRIC, PORPHYRITIC;
Structure : IN PCES 6B+6I CALCITE VEINLETS ARE RECOGNIZED,
CRACKS PRESENT;
Alteration : MOD
ALTERATION IS INTENSE ALONG CRACKS;
Comments : THERE IS NO SYSTEMATIC VARIATION IN GRAIN SIZE OR
MODAL CONTENT OF PLAG THROUGHOUT THIS SECTION, PCES
6A-6I FORM A CONTINUOUS SECTION;
Vesicles : Size(mm): 1-3 Percent: 1
Location: Filling: CLAY
FILLED WITH PALE GREEN (FRESH PART) OR BROWN
(ALTERED PART) CLAY MINERALS;
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): TO 10
OLIVINE ( 1%)
Replacement: CLAY MINERALS
CALCITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Rhodes, M.
Hole: 395A Sample Midpoint (m) : 192.99
Core: 15 Top of Core Depth (m) : 191.49
Sect: 1 Top of Section Depth(m): 191.49
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1A (6-12), 1B (12-19), 1C (19-25), 1D (25-29),
1E (30-36), 1F (34-38), 1G (38-46), 1H (46-56),
1I (56-63), 1J (58-65), 1K (65-73), 1L (73-80),
1M (80-90), 1N (90-96), 1O (96-106), 1P (107-113),
1Q (115-121), 1R (122-125), 1S (127-131),
1T (133-139), 1U (139-150);
Texture : PLAG-OL PHYRIC, PORPHYRITIC;
Alteration : MOD
PART OF PCES 1A+1C+1H+1M+1N+1U, PCES 1D+1E+1Q-1T
COMPLETELY MOD ALTERED;
SLIGHTLY
PCES 1B+1G+1I+1J+1L+1O+1P AND PART OF PCES 1A+1C+
1H+1M+1N+1U;
Vesicles : Size(mm): 1-2 Percent:
VESICLES SCATTERED THROUGHOUT THE CORE FILLED WITH
PALE GREEN MINERALS;
Phenocrysts: PLAGIOCLASE ( <25%)
Size(mm): TO 8
GLOMEROCRYSTS UP TO 8MM IN LENGTH;
OLIVINE
Size(mm): TO 3
OL CLUSTERS UP TO 3MM DIAMETER, PCE 10 CONTAINS
ONE OL PHENO 6MM IN LENGTH;
Replacement: CLAY MINERALS
IDDINGSITE
Minerals Replaced: OL
PCES 1Q-1T OL ALTERED TO IDDINGS;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 194.49
Core: 15 Top of Core Depth (m) : 191.49
Sect: 2 Top of Section Depth(m): 192.99
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1A (0-5), 1B (5-10), 1C (10-16), 1D (16-22),
1E (22-30), 1F (30-39), 1G (39-50), 1H (50-62),
1J (62-76), 1K (76-90), 1L (90-96), 1M (95-102),
1N (102-112), 1O (113-118), 1P (117-121),
1Q (120-129), 1R (129-137), 1S (137-144),
1T (144-150);
Texture : PLAG-OL PHYRIC, PORPHYRITIC;
Structure : CRACKS IN 1E-1G AND 1J AND 1K FILLED WITH CARB
AND/OR ALTERATION PRODUCTS;
Vesicles : Size(mm): 0.5 Percent:
IN PCE 1H;
Size(mm): <2 Percent: 2
IN PCES 1J+1K+1N+LOWER PART OF PCE 1M;
Size(mm): 10 Percent:
Location: Filling: CARB
PCES 1Q-1T CONTAIN 1CM VUGS FILLED WITH WHITE
MINERAL (CARB);
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): 3-5
OLIVINE ( 2%)
Size(mm): 3
Replacement: CLAY MINERALS
ID UNCERTAIN;
CARBONATE
ID UNCERTAIN;
IDDINGSITE
Minerals Replaced: OL
ID UNCERTAIN, OL ALTERED TO IDDINGS IN MORE
WEATHERED PARTS OF THE CORE;
Leg : 45 Top/Bottom Interval(mm): 0/1450 Analyst: Rhodes, M.
Hole: 395A Sample Midpoint (m) : 195.94
Core: 15 Top of Core Depth (m) : 191.49
Sect: 3 Top of Section Depth(m): 194.49
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1A (2-10), 1B (10-22), 1C (22-29), 1D (22-38),
1E (38-52), 1F (52-61), 1G (61-71), 1H (71-80),
1I (80-95), 1J (95-101), 1K (101-104), 1L (104-116),
1M (114-120), 1N (120-124), 1O (122-128),
1P (129-145);
Texture : PLAG-OL PHYRIC, PORPHYRITIC;
Structure : INCIPIENT CRACKS ARE ALSO LINED WITH PALE GREEN
MATERIAL, MASSIVE;
Alteration : MOD
PCES 1B-1D AND 1J-1L;
FRESH
PCES 1A AND 1E-1I AND 1M-1P;
Vesicles : SMALL VESICLES OCCUR ALONG THE LENGTH OF THE CORE
FILLED WITH A PALE GREEN MATERIAL, VUGS UP TO 1CM
ARE PRESENT WITH A LINING OF VERY PALE GREEN
MATERIAL AND SOME CONTAIN SMALL SULPHIDE
CRYSTALS, SOME LARGER UNFILLED VESICLES ARE
PRESENT;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: CLAY MINERALS
ID UNCERTAIN;
SULFIDE
IDDINGSITE
Minerals Replaced: OL
ID UNCERTAIN, IN THE ZONES OF MOD ALTERATION THE
OL IS COMPLETELY REPLACED BY IDDINGS(?);
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 197.49
Core: 15 Top of Core Depth (m) : 191.49
Sect: 4 Top of Section Depth(m): 195.99
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1A (2-7), 1B (6-16), 1C (16-24), 1D (27-42),
1E (43-51), 1F (48-62), 1G (62-73), 1H (68-77),
1I (77-82), 1J (81-86), 1K (86-93), 1L (88-99),
1M (100-115), 1N (115-137), 1O (137-150);
Texture : PLAG-OL PHYRIC, PORPHYRITIC;
Structure : PCES 1N+1K+1L CONTAIN VEINS FILLED WITH CARB AND
PALE GREEN CLAY;
Alteration : MOD
PCES 1A-1E AND 1G AND 1H-1L AND 1O;
EXT
PCES 1F AND 1G AND 1N;
FRESH
PCE 1M;
Vesicles : Size(mm): 5 Percent:
Location: Filling: CLAY
FEW VESICLES FILLED WITH PALE GREEN CLAY MINERALS;
Phenocrysts: PLAGIOCLASE ( 20%)
Size(mm): <10
OLIVINE ( 5%)
FRESH;
Replacement: CLAY MINERALS
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/ 400 Analyst: Rhodes, M.
Hole: 395A Sample Midpoint (m) : 197.89
Core: 15 Top of Core Depth (m) : 191.49
Sect: 5 Top of Section Depth(m): 197.49
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1A (2-15), 1B (15-30), 1C (30-40);
Texture : PLAG-OL PHYRIC, PORPHYRITIC;
Structure : MASSIVE;
Alteration : FRESH;
MOD
LOWER PART OF PCE 1B AND UPPER PART OF PCE 1C;
Vesicles : VESICLES AND VUGS ARE RARE;
Phenocrysts: PLAGIOCLASE (10-15%)
Size(mm): <10
POSSIBLY GLOMEROCRYSTS;
OLIVINE
Size(mm): <2
OL PHENOS ASSOCIATED WITH PLAG PHENOS (OL
POSSIBLY XENOLITHS?), SOME PLAG PHENOS CONTAIN
EUHEDRAL CRYSTAL INCLUSIONS OF A BLACK MINERAL
(SPINEL?);
SPINEL
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 440/1500 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 202.49
Core: 16 Top of Core Depth (m) : 200.99
Sect: 1 Top of Section Depth(m): 201.43
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1A (44-66), 1B (44-66), 1C (44-66), 1D (44-66),
1E (44-66), 1F (44-66), 2 (69-77), 3 (78-84),
4 (85-96), 5 (97-103), 6 (105-109), 7 (111-118),
8 (119-125), 9 (126-131), 10 (132-139),
11 (142-148);
Texture : PLAG-OL PHYRIC, PORPHYRITIC, PCES 4+11 GNDMASS IS
GLASSY IN PART, PCES 4 AND 11 GLASSY BORDERS, PCE 4
GLASS 1 CM THICK;
Structure : CALCITE VEINS SEPARATE THE PORTIONS OF PCE 1,
CALCITE VEINS ALSO OCCUR IN PCE 2;
Alteration : MOD
OL ALTERED TO BROWN MATERIAL, EXTERIOR OF PCE 4
ALTERED TO PALE BROWN MATERIAL (PALAG?);
Comments : PCES 4-10 FORM A COOLING UNIT;
Phenocrysts: PLAGIOCLASE ( 10%)
OLIVINE ( 1%)
IN PCES 7 AND 9;
FRESH OL PRESENT IN PCES 4-6;
Replacement: CALCITE
PALAGONITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 212.02
Core: 17 Top of Core Depth (m) : 210.52
Sect: 1 Top of Section Depth(m): 210.52
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (2-9), 2 (11-16), 3 (17-24), 4 (25-30),
5 (31-39), 6 (40-44), 7 (46-56), 8 (57-68),
9 (69-67), 10 (78-85), 11 (85-90), 12 (90-96),
13 (97-103), 14 (104-108), 15A (109-117),
15B (109-117), 15C (115-125), 15D (125-135),
16 (136-143), 17 (144-149);
Texture : PLAG-OL-CPX PHYRIC, PCES 7+11+15D HAVE GLASSY RIMS-
IN PCES 7 AND 15D THE RIM OCCURS ON THE BOTTOM OF
THE PCE-A GLASSY ZONE 2.5CM ABOVE THE BOTTOM OF PCE
7 IS ALSO PRESENT;
Alteration : MOD
OL IS ALTERED TO BROWN MATERIAL BUT SOME IS FRESH,
PCES 16+17 ENCRUSTED WITH WHITE-YELLOW MATERIAL,
THE GLASSY RIM IN PCE 11 SHOWS BROWN ALTERATION;
Comments : PCES 7+10+15D REPRESENT THE BOTTOM OF THE MINIMUM
NUMBER OF COOLING UNITS;
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): TO 0.5
OLIVINE ( 10%)
Size(mm): <0.3
CLINOPYROXENE ( <0.5%)
Size(mm): <0.5
IN PCES 1-6;
PLAGIOCLASE ( 20%)
OLIVINE ( 5%)
CLINOPYROXENE ( 0.5%)
IN PCES 7-15D;
PLAGIOCLASE ( 25%)
OLIVINE ( 3-5%)
CLINOPYROXENE ( <0.5%)
IN PCES 16+17;
MODAL PHENO PERCENTAGES CHANGE THROUGH THIS
SECTION;
Leg : 45 Top/Bottom Interval(mm): 150/1480 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 221.27
Core: 18 Top of Core Depth (m) : 219.79
Sect: 1 Top of Section Depth(m): 219.94
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1 (15-20), 2 (23-32), 3 (34-39), 4 (42-44),
5 (47-53), 6 (55-61), 7 (63-70), 8 (72-78),
9 (81-87), 10 (89-95), 11 (97-104), 12 (106-113),
13 (115-120), 14 (122-128), 15 (130-135),
16 (137-148);
Texture : PHYRIC, PCES 1-7 AND 9 CONTAIN GLASSY - PROBABLY
SUBVARIOLITIC - GNDMASS, PCES 1 AND 9 ARE NOTABLY
GLASSY, PCES 8 AND 12 ARE THE COARSEST GRAINED;
Alteration : MOD
OL IS ALMOST COMPLETELY ALTERED TO BROWN CLAY.MIN,
PCE 9 IS COATED WITH PALAG AND CALCITE ON THE
WEATHERED SURFACE;
Comments : A MN SPOT IS ALSO OBSERVED ON PCE 9;
Vesicles : Size(mm): Percent: 1
VESICULAR;
Phenocrysts: PLAGIOCLASE ( 7-10%)
OLIVINE ( 1%)
CLINOPYROXENE ( RARE%)
PCES 4-7 AND 12-16 LACK IDENTIFIABLE CPX PHENOS;
Replacement: CLAY MINERALS
Minerals Replaced: OL
BROWN CLAY;
PALAGONITE
CALCITE
MANGANESE OXIDE
Leg : 45 Top/Bottom Interval(mm): 1060/1470 Analyst: Natland, J.
Hole: 395A Sample Midpoint (m) : 230.81
Core: 19 Top of Core Depth (m) : 229.34
Sect: 1 Top of Section Depth(m): 230.40
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (109-116), 2 (118-123), 3 (126-130),
4 (133-139), 5 (141-147);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, PCE 2 HAS A GLASSY
EDGE, WEATHERED RINDS ON PCES 1 AND 3 INDICATE
PRIMARY SHAPES;
Alteration : MOD
WEATHERED RINDS ON PCES 1 AND 3, OL IS GENERALLY
ALTERED TO BROWNISH ALTERATION MINERALS,
WEATHERED SURFACES DARKENED WITH MN.OXIDES;
Phenocrysts: PHENO PERCENTAGES CHANGE THROUGH THIS SECTION;
PLAGIOCLASE ( 9%)
OLIVINE ( 9%)
CLINOPYROXENE ( 2%)
IN PCE 1-TOTAL 20%;
PLAGIOCLASE ( 21%)
OLIVINE ( 7%)
CLINOPYROXENE ( 2%)
IN PCE 2 (GLASSY SECTION)-TOTAL 30%;
PLAGIOCLASE ( 7%)
OLIVINE ( 7%)
IN PCE 2 (NON GLASSY SECTION)-TOTAL 15%;
PCE 3 WAS TOO SMALL TO MAKE ESTIMATES;
PLAGIOCLASE ( 7%)
OLIVINE ( 2%)
CLINOPYROXENE ( 1%)
IN PCE 4-TOTAL 10%;
PLAGIOCLASE ( 7%)
OLIVINE ( 7%)
CLINOPYROXENE ( 1%)
IN PCE 5;
Replacement: MANGANESE OXIDE
Leg : 45 Top/Bottom Interval(mm): 420/1470 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 233.37
Core: 20 Top of Core Depth (m) : 231.90
Sect: 1 Top of Section Depth(m): 232.32
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (42-47), 2 (49-55), 3 (58-65), 4 (67-76),
5 (78-87), 6 (90-96), 7 (99-107), 8 (109-117),
9 (119-128), 10 (131-137), 11 (140-147);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, SUBVARIOLITIC,
FINE-GRAINED, GROUNDMASS HOMOGENEOUS;
Structure : CARB VEINLET PRESENT IN PCE 1;
Alteration : MOD
PCES 1-3 AND 5-9 AND 11;
EXT
PCES 4 AND 10;
PCE 7 FRESH PART IS BLUISH GRAY ALTERED AREAS
GRAYISH BROWN, PCES 4 AND 9 ARE CARB ENCRUSTED AND
HAVE MN SPOTS;
Comments : MN SPOTS ON PCES 4 AND 9;
Vesicles : Size(mm): 1 Percent: 2
IN PCES 4+5+11, VESICLES IN PCE 4 LINED WITH A
DARK BROWN MATERIAL;
Size(mm): 1 Percent: 4
IN PCE 10;
Phenocrysts: MODAL PHENO PERCENTAGES VARY THOUGH THIS SECTION;
PLAGIOCLASE ( 20%)
Size(mm): 1-5
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
IN PCE 1;
PLAGIOCLASE ( 25%)
OLIVINE ( 3%)
CLINOPYROXENE ( <1%)
IN PCES 2+3+7+8;
PLAGIOCLASE ( 15%)
OLIVINE ( <5%)
CLINOPYROXENE ( <1%)
IN PCES 4-6 AND 9-11;
PCE 1 CONTAINS A LARGE PLAG PHENO 1CM WITH GLASSY
INCLUSIONS (XENOCRYST?);
Replacement: CARBONATE
MANGANESE OXIDE
Leg : 45 Top/Bottom Interval(mm): 700/1470 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 242.91
Core: 21 Top of Core Depth (m) : 241.44
Sect: 1 Top of Section Depth(m): 242.14
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (70-75), 2 (78-82), 3 (80-91), 4 (94-100),
5 (102-108), 6 (112-126), 7 (130-136), 8 (140-148);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, PCES 1+2+7+8 VERY
FINE NEAR GLASSY;
Structure : PCE 6 CUT BY CRACKS FILLED WITH DARK BROWN MATERIAL;
Alteration : MOD
PCES 1 AND 2 HAVE CRUSTS 1-2MM THICK OF CARB AND
ORANGE CLAYS, PCE 8 HAS BROWN PATCHES AND
ALTERATION PRODUCTS ESPECIALLY OF OL;
Phenocrysts: PLAGIOCLASE ( 15%)
OLIVINE ( 5%)
CLINOPYROXENE
IN PCES 1+6,ID UNCERTAIN;
PLAGIOCLASE ( 20%)
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
IN PCES 2-5;
PLAGIOCLASE ( 15%)
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
IN PCES 7 AND 8;
PLAGIOCLASE ( 15%)
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
IN PCES 1+2+7+8;
Replacement: CARBONATE
CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 100/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 252.47
Core: 22 Top of Core Depth (m) : 250.97
Sect: 1 Top of Section Depth(m): 251.07
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (10-15), 2 (16-21), 3 (22-28), 4 (30-36),
5 (37-43), 6 (44-48), 7 (50-57), 8 (59-64),
9 (65-68), 10 (70-74), 11 (75-80), 12 (81-85),
13A (86-91), 13B (91-99), 13C (98-110),
13D (110-119), 13E (119-127), 14 (129-134),
15 (136-140), 16 (142-148);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, GNDMASS UNIFORMLY
FINE-GRAINED WITH NO GLASSY CONTACTS;
Structure : PCES 7+13C-E+15+16 HAVE CALCITE VEINS;
Alteration : MOD
OL MOSTLY ALTERED TO BROWNISH MATERIALS, A FEW
SMALL (2 X 1CM) AREAS ARE LESS ALTERED IN PCE
13D;
Phenocrysts: PLAGIOCLASE ( 20%)
Size(mm): <10
NORMALLY 1MM;
OLIVINE ( 5-7%)
Size(mm): <3
CLINOPYROXENE ( <1%)
PALE EMERALD GREEN, NOT PRESENT IN ALL PCES;
Replacement: CALCITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 253.97
Core: 22 Top of Core Depth (m) : 250.97
Sect: 2 Top of Section Depth(m): 252.47
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1A (3-12), 1B (12-21), 1C (13-26), 1D (26-39),
1E (37-44), 2A (46-51), 3 (52-56), 4A+4B (57-63),
4C (63-67), 4D (67-75), 4E (75-80), 5 (81-86),
6 (87-92), 7 (93-99), 8 (102-109), FRAGMENTS
(110-119), 9A (122-125), 9B (124-130), 9C (129-133),
9D (134-138), 10A (141-147);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, PCES 9A-9D VERY
FINE-GRAINED, ALMOST GLASSY;
Structure : PCES 1A-1E INCLUDE CARB VEINS, CRACK BETWEEN PCES
4A AND 4B COATED WITH IRON HYDROXIDE WITH MN SPOTS;
Alteration : MOD;
EXT
FRAGMENTS (110-120CM);
ALTERATION EXT ALONG CARB VEINS, OL ALTERED TO
BROWN CLAY MINERALS, SOME OL FRESH;
Comments : PCE 5 HAS A MN.OX SPOT, THE BASE OF PCE 1E IS THE
PROBABLE BOUNDARY OF CHEMICAL TYPES C-1 AND C-2
PCES 9A APPEARS TO BE THE TOP OF A COOLING UNIT,
PCE 10A IS BROKEN;
Phenocrysts: PLAGIOCLASE (15-20%)
Size(mm): TO 6
2MM AVERAGE;
OLIVINE ( 7%)
Size(mm): TO 2
CLINOPYROXENE ( 1%)
Size(mm): <1
IN PCES 1A-1E;
PLAGIOCLASE (10-15%)
Size(mm): TO 3
2MM AVERAGE;
OLIVINE ( 5%)
Size(mm): TO 3
CLINOPYROXENE ( <1%)
Size(mm): <1
IN PCES 2A AND 3;
PLAGIOCLASE ( 10%)
Size(mm): TO 3
AVERAGE 1.5-2MM;
OLIVINE ( 5-7%)
Size(mm): TO 3
CLINOPYROXENE ( 1%)
IN PCES 4A-4E;
PLAGIOCLASE ( 15%)
Size(mm): TO 4
2MM AVERAGE;
OLIVINE ( 5%)
Size(mm): TO 2
CLINOPYROXENE ( 1%)
Size(mm): TO 3
IN PCES 5-7;
PLAGIOCLASE ( 20%)
Size(mm): TO 4
OLIVINE ( 5%)
Size(mm): TO 2
CLINOPYROXENE ( 1%)
Size(mm): TO 3
IN PCE 8;
PLAGIOCLASE ( 15%)
OLIVINE ( 5%)
CLINOPYROXENE ( 1%)
IN PCES 9A-10A, PCE 9C CONTAINS A PLAG PHENO 1CM
ACROSS;
Replacement: FERROUS HYDROX MINS
MANGANESE OXIDE
CARBONATE
CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 410/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 261.87
Core: 23 Top of Core Depth (m) : 260.37
Sect: 1 Top of Section Depth(m): 260.78
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (42-47), 2 (48-54), 3 (56-61), 4 (62-67),
5 (68-73), 6 (75-79), 7 (80-86), 8 (87-93),
9 (95-100), 10 (102-107), 11 (108-114),
12 (115-123), 13 (124-128), 14 (129-135),
15 (136-141), 16 (142-150);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, PART OF PCES 7 AND
11 CONTAIN GLASSY ZONES, PCE 7 IS GENERALLY FINER
GRAINED;
Structure : PCES 2+3+8-10+12 CONTAIN VEINS-IRREGULAR MEANDERING
AREAS 1-3MM WIDE WHICH ARE LESS WEATHERED POSSIBLY
FINER GRAINED;
Alteration : MOD
OL PARTLY FRESH BUT OFTEN ALTERED TO RUST COLORED
ALTERATION MINERALS;
Vesicles : Size(mm): Percent: 3
VESICLES 3% IN ALL PCES;
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): TO 10
2-3MM AVERAGE;
OLIVINE ( 5-7%)
Size(mm): <3
CLINOPYROXENE ( <1%)
IN PCES 1-10, PCES 7 AND 8 CONTAIN LARGE CPX
PHENOS 4MM (7) AND 3MM (8), THE PHENO FROM PCE 8
INCLUDES PLAG;
Leg : 45 Top/Bottom Interval(mm): 1070/1480 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 271.36
Core: 24 Top of Core Depth (m) : 269.88
Sect: 1 Top of Section Depth(m): 270.95
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (107-113), 2 (114-120), 3 (121-128),
4 (130-137), 5 (137-148);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, PCE 2 HAS A
PALAGONITIZED GLASS RIM 2MM THICK, PCE 5 HAS A
BLACK "SPECULAR" MINERAL ON ITS UPPER EDGE
(PROBABLE CRACK FILLING), FINE-GRAINED, PCE 5 HAS A
GLASSY RIND,GNDMASS IS FINE-GRAINED;
Structure : CALCITE AND ZEOLITES OCCUR AS CRACK FILLINGS;
Alteration : MOD
OL PARTLY ALTERED TO BROWN MINERALS;
Comments : COOLING UNIT BOUNDARIES PLACED ABOVE PCE 2 AND 5;
Vesicles : Size(mm): 1 Percent: 2-3
VESICULAR;
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): TO 5
OLIVINE ( 7%)
Size(mm): 2-3
CLINOPYROXENE ( 1-2%)
Size(mm): 1-2
PCES 5 CONTAINS A CPX PHENO 5MM LONG, A CPX PHENO
IS PRESENT IN PCE 2 WITH INCLUSIONS OF PLAG;
Replacement: CALCITE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 272.88
Core: 24 Top of Core Depth (m) : 269.88
Sect: 2 Top of Section Depth(m): 271.38
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (2-12), 2A (14-17), 2B (17-23), 3 (25-30),
4 (32-37), 5 (39-46), 6 (47-52), 7 (53-59),
8 (60-64), 9 (65-74), 10A+10B (75-82), 11 (83-87),
12 (89-93), 13 (94-98), 14 (99-102), 15 (103-109),
16 (110-115), 17 (116-125), 18 (126-132),
19 (133-139), 20 (141-147);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, PCES 2A+2B+14+15
VERY FINE-GRAINED WITH GLASSY RINDS ALTERED TO
PALAG, RIND ON PCES 2A AND 2B 1CM THICK, RIND ON
PCE 15 .4CM THICK;
Structure : PCES 2A+2B+14+15 CONTAIN SMALL VEINS FILLED WITH
WHITE MATERIAL;
Alteration : MOD
IN PCES 1-4+6+10-19 OL ALMOST COMPLETELY ALTERED,
PCES 5+7-9+20 OL IS FRESHER, PCE 15 CPX FRESH,
MN(?) COATS CRACKS (BROWN MATERIAL);
Comments : COOLING UNIT BOUNDARIES PLACED ABOVE PCES 2+14+15;
Phenocrysts: PLAGIOCLASE ( 20%)
Size(mm): TO 4
PLAG PHENOS AVERAGE 1-2MM;
OLIVINE ( 5-7%)
Size(mm): 2-3
CLINOPYROXENE ( <1%)
Size(mm): 2
Replacement: CALCITE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 280.91
Core: 25 Top of Core Depth (m) : 279.41
Sect: 1 Top of Section Depth(m): 279.41
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (1-8), 2A (9-17), 3 (18-26), 4 (27-32),
5 (34-41), 6 (42-48), 7 (49-53), 8 (54-60),
9A (61-69), 9B (69-72), 9C (72-76), 10A (77-82),
10B (82-92), 11 (93-100), 12 (102-105),
13 (106-109), 14 (110-116), 15 (117-126),
16 (127-134), 17 (135-140), 18A (141-148),
18B (141-148), 18C (141-148);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, PCES 6 AND 8 HAVE
GLASSY AREAS, PCE 18 IS VERY FINE-GRAINED;
Structure : VEINS OCCUR IN PCE 5+10A+10B;
Alteration : MOD
OL PARTIALLY ALTERED;
Comments : COOLING UNIT BOUNDARIES PLACED ABOVE PCES 6 AND 8
A TENTATIVE BOUNDARY IS PLACED ABOVE PCE 18;
Vesicles : Size(mm): Percent: 1
PCE 1 CONTAINS VESICLES;
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): 3
ONE PLAG PHENO CONTAINS INCLUSIONS OF DARK
MATERIAL (GLASS)?;
OLIVINE ( 5%)
PCE 10 HAS OL PHENO PERCENTAGE (7%);
CLINOPYROXENE ( 1%)
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 70/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 290.29
Core: 26 Top of Core Depth (m) : 288.79
Sect: 1 Top of Section Depth(m): 288.86
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (7-14), 2 (15-18), 3 (20-24), 4 (25-31),
5 (32-41), 6 (42-46), 7 (46-54), 8A (55-62),
8B (61-69), 8C (69-79), 9A (81-92), 9B (91-101),
10A (102-111), 10B (111-122), 10C (120-125),
11A (127-137), 11B (136-139), 11C (137-148);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, PCE 5 HAS A VERY
FINE-GRAINED ALMOST GLASSY RIND;
Structure : VEINS ARE FOUND IN PCES 5+8C-11C;
Alteration : MOD
ALL EXCEPT FOR TOP 3CM OF PCES 10A+11A WHICH ARE
FRESH, OL IS PARTIALLY ALTERED TO BROWN MATERIAL;
Comments : POSSIBLE COOLING BOUNDARY BELOW PCE 5;
Phenocrysts: PLAGIOCLASE ( 15%)
OLIVINE ( 5%)
CLINOPYROXENE ( 1%)
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 291.79
Core: 26 Top of Core Depth (m) : 288.79
Sect: 2 Top of Section Depth(m): 290.29
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1A (2-12), 1B (12-23), 1C (23-33), 1D (27-33),
1E (33-40), 1F (33-43), 2 (46-50), 3A (52-62),
3B (60-64), 4 (67-72), 5 (67-72), 6 (73-78),
7 (80-87), 8 (87-97), 9 (97-107), 10 (108-114),
11 (115-122), 12 (124-131), 13 (132-137),
14 (139-143), 15 (144-148);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, PCES 6 AND 8 HAVE
GLASSY RINDS, IN PCE 6 THE RIND IS ALTERED, PCES 7
AND 12 ARE ALMOST GLASSY;
Structure : PCE 1B AND 1C CONTAIN CRACKS AND VEINS, IN PCE 1C
CRACKS AND VEINS FILLED WITH WHITE MATERIAL, PCE 1E
AND 1F ARE JOINTED AND JOINT FACES RECOVERED WITH
YELLOW BROWN MATERIAL;
Alteration : MOD
ONE FACE OF PCE 6 COATED WITH OLIVE GREEN
MATERIAL, GREEN YELLOW MATERIAL AT ADJOINING
FACES OF PCES 3A AND 3B;
Comments : COOLING UNITS PLACES ABOVE PCES 6-8+12;
Vesicles : Size(mm): Percent: 1
VESICLES 1%, EMPTY IN PCES 1A-5, PCE 1A HAS A VUG
PARTIALLY FILLED WITH BOTRYOIDAL MATERIAL (CARB?);
Phenocrysts: PLAGIOCLASE ( 15%)
OLIVINE ( 5%)
PCES 3A AND 3B HAVE SLIGHTLY MORE OL;
CLINOPYROXENE ( 1%)
Replacement: CARBONATE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 1050/1470 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 299.80
Core: 27 Top of Core Depth (m) : 298.33
Sect: 1 Top of Section Depth(m): 299.38
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1 (105-112), 2A (115-127), 2B (127-139),
2C (134-139), 3 (142-147);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC;
Alteration : MOD;
FRESH
PART OF PCES 2A AND 2B;
Vesicles : Size(mm): <1 Percent: 1
Location: Filling: CLAY
PCES 2A-3 HAVE VESICLES FILLED WITH GREENISH
GRAY CLAY MINERALS(?);
Phenocrysts: MODAL PHENO PERCENTAGE VARIES THROUGH THIS
SECTION;
PLAGIOCLASE ( 10%)
Size(mm): TO 5
2MM AVERAGE SIZE;
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
Size(mm): TO 1
IN PCE 1;
PLAGIOCLASE ( 15%)
Size(mm): TO 5
2MM AVERAGE SIZE;
OLIVINE ( 5%)
CLINOPYROXENE ( 1%)
Size(mm): <1
IN PCES 2A-2C;
PLAGIOCLASE (15-20%)
OLIVINE ( 5%)
CLINOPYROXENE ( RARE%)
IN PCE 3;
Replacement: CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 20/1470 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 301.30
Core: 27 Top of Core Depth (m) : 298.33
Sect: 2 Top of Section Depth(m): 299.85
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 1A (2-5), 1B (5-16), 1C (15-24), 1D (25-34),
2A (38-47), 2B (46-52), 3 (58-67), 4 (69-77),
5 (80-88), 6 (90-98), 7 (100-107), 8 (110-116),
9 (120-123), 10 (126-134), 11 (135-147);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, A GLASSY RIND IS
FOUND ON PCE 4;
Structure : PCES 2A-3+5+6 HAVE CRACKS COATED WITH CARB;
Alteration : MOD;
Comments : A COOLING UNIT BOUNDARY IS TENTATIVELY PLACED
ABOVE PCE 4;
Vesicles : Size(mm): 1-2 Percent: <1
IN PCES 1A-1D;
Size(mm): Percent: 2
IN PCES 7 AND 10, BOTH FILLED WITH DARK GREEN
MATERIAL;
Size(mm): Percent: 1
IN PCES 8+9+11, FILLED WITH DARK GREEN MATERIAL;
Phenocrysts: PLAGIOCLASE ( 20%)
Size(mm): 4
PCE 4 CONTAINS PLAG PHENOS 1.2CM WITH GLASSY
INCLUSIONS, PCE 4 ALSO CONTAINS A 6.8MM CPX
PHENO;
OLIVINE ( 5%)
Size(mm): 3
CLINOPYROXENE ( 1%)
Size(mm): 1
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 350/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 309.34
Core: 28 Top of Core Depth (m) : 307.84
Sect: 1 Top of Section Depth(m): 308.19
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1 (35-41), 2 (43-48), 3 (51-62), 4 (63-70),
5 (72-78), 6 (81-86), 7 (88-93), 8 (96-100),
9A (104-112), 9B (111-115), 9C (115-122),
10 (127-132), 11 (134-141), 12 (143-148);
Texture : PLAG-OL PHYRIC, PORPHYRITIC, GLASSY RIND FOUND ON
TOP OF PCE 9A;
Alteration : MOD
ALL PCES EXCEPT PART OF PCE 2;
EXT
PART OF PCE 2;
OL MOSTLY ALTERED TO REDDISH BROWN MINERALS;
Comments : PCE 9A REPRESENTS THE TOP OF A COOLING UNIT, PCE 1
HAS BLACK MN SPOTS(?);
Vesicles : Size(mm): Percent: 1
IN PCES 3-8 VESICLES PARTLY FILLED WITH DARK
GREEN MINERALS;
Phenocrysts: PLAGIOCLASE ( 10%)
Size(mm): TO 10
AVERAGE 2-3MM;
OLIVINE ( 5%)
IN PCE 1;
PLAGIOCLASE ( 15%)
OLIVINE ( <5%)
IN PCE 2;
PLAGIOCLASE ( 20%)
OLIVINE ( <5%)
IN PCES 3-8;
PLAGIOCLASE (15-20%)
OLIVINE ( <5%)
IN PCE 9A;
PLAGIOCLASE ( 15%)
OLIVINE ( <5%)
Leg : 45 Top/Bottom Interval(mm): 1100/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 318.84
Core: 29 Top of Core Depth (m) : 317.34
Sect: 1 Top of Section Depth(m): 318.44
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1 (110-115), 2 (117-122), 3 (124-132),
4 (135-140), 5 (142-147);
Texture : PLAG-OL PHYRIC, PORPHYRITIC, PCE 3 IS PARTLY
GLASSY;
Alteration : MOD;
Comments : COOLING UNIT BOUNDARY PLACED ABOVE PCE 3, PCE 3 MAY
HAVE MN SPOTS ON THE WEATHERED SURFACE;
Vesicles : Size(mm): Percent: 1
VESICLES FILLED ONLY IN PCES 4 AND 5;
Phenocrysts: PLAGIOCLASE ( 15%)
OLIVINE ( 3-5%)
Leg : 45 Top/Bottom Interval(mm): 280/1480 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 328.35
Core: 30 Top of Core Depth (m) : 326.87
Sect: 1 Top of Section Depth(m): 327.15
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1 (28-33), 2 (34-38), 3 (39-44), 4 (44-52),
5 (53-60), 6 (61-64), 7 (66-71), 8 (72-79),
9A (80-87), 9B (87-90), 9C (90-96), 9D (96-110),
10 (112-117), 11 (118-122), 12 (122-128),
13 (129-133), 14 (133-138), 15 (139-147);
Texture : PLAG-OL PHYRIC, PORPHYRITIC, PCES 1 AND 2 HAVE
GLASSY RINDS, PCES 9A-9D MATRIX IS FINE TO
MEDIUM-GRAINED,
PHENO PERCENTAGES VARY THROUGHOUT THIS SECTION,
Structure : CRACKS IN PCES 9A-9D LINED WITH CARB;
Alteration : MOD;
SLIGHTLY
PART OF PCE 9A AND 9D;
EXT
PCE 2;
GLASS IN PCES 1 AND 2 ALTERED TO BROWN MINERALS
AND COATED WITH CARB, PCES 10-15 SOME OL PHENOS
ALTERED TO BROWN MINERALS;
Comments : PCE 14 IS TOO SMALL TO DESCRIBE;
Vesicles : Size(mm): Percent: <1
Location: Filling: CLAY?
VESICLES IN PCES 3-8 FILLED WITH BLUISH GREY
CLAYS(?);
Size(mm): Percent: <1
Location: Filling: CARB
VESICLES IN PCES 9A-15 FILLED WITH PALE GREENISH
GREY MATERIAL OR CARB;
Phenocrysts: PLAGIOCLASE ( 10%)
Size(mm): 10
3MM AVERAGE;
OLIVINE ( 3%)
Size(mm): 1-3
IN PCES 1-8;
PLAGIOCLASE ( 15%)
OLIVINE ( 5%)
IN PCES 9A-15;
Replacement: CARBONATE
ID UNCERTAIN;
CLAY MINERALS
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 460/ 510 Analyst: Natland, J.
Hole: 395A Sample Midpoint (m) : 336.57
Core: 31 Top of Core Depth (m) : 336.06
Sect: 1 Top of Section Depth(m): 336.52
LITHOLOGY: DRILL CUTTINGS;
Piece No. : PCE 1 (46-51);
Comments : WET DRILL CUTTINGS IN A 3CC BOTTLE;
Leg : 45 Top/Bottom Interval(mm): 540/1480 Analyst: Natland, J.
Hole: 395A Sample Midpoint (m) : 337.54
Core: 31 Top of Core Depth (m) : 336.06
Sect: 1 Top of Section Depth(m): 336.60
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 2 (54-62), 4 (70-77), 5 (79-82), 6 (83-87),
7 (88-100), 8 (101-109), 9 (110-119), 10 (120-124),
11 (126-131), 13 (136-140), 14 (142-148);
Texture : PLAG-OL PHYRIC, PORPHYRITIC;
Structure : CRACKS ARE PRESENT AND CONTAIN CARB;
Alteration : MOD
WEATHERED RINDS ON PCES 2 AND 9;
Comments : PCE 13 IS 6 SMALL PCES IN A PLASTIC BAG;
Phenocrysts: COMBINATION (25-30%)
Size(mm): 1-3
INCLUDING PLAG+OL, RARELY 0.5CM,
RATIO OF PLAG TO OL PHENOS IS 10 TO 1;
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 540/1480 Analyst: Natland, J.
Hole: 395A Sample Midpoint (m) : 337.54
Core: 31 Top of Core Depth (m) : 336.06
Sect: 1 Top of Section Depth(m): 336.60
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 3 (63-69), 12 (131-136);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC;
Alteration : MOD;
Phenocrysts: PLAGIOCLASE (20-25%)
OLIVINE ( 3-5%)
CLINOPYROXENE ( RARE%)
IN PCE 12 CPX APPEARS INTERGROWN WITH PLAG;
Leg : 45 Top/Bottom Interval(mm): 330/1480 Analyst: Natland, J.
Hole: 395A Sample Midpoint (m) : 346.94
Core: 32 Top of Core Depth (m) : 345.46
Sect: 1 Top of Section Depth(m): 345.79
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 1 (34-44), 2 (47-51), 3A (53-63), 3B (63-71),
3C (71-81), 4A (83-91), 4B (91-95), 4C (95-105),
4D (105-110), 4E (109-118), 5 (121-129),
6 (131-137), 7 (139-148);
Texture : OL-PLAG PHYRIC, PORPHYRITIC, BASALT CLASTS HAVE 15%
PHENOS WITH OL TO PLAG RATIOS OF 2:1 VARYING TO 1:1,
BASALT CLASTS 0.5-20CM LONG ANGULAR TO ROUNDED, SAND
SIZED BASALT AND MINERAL GRAINS (MOSTLY PLAG);
Structure : PCES 4E AND 5 MAY HAVE SHEAR-ORIENTED BRECCIA MATRIX
NEXT TO LARGE CLASTS, SMALL CARB VEINS IN CLASTS AND
MATRIX;
Alteration : EXT;
MOD
ALONG THE EDGES OF MOST PCES ALTERATION VARIES
FROM EXT TO MOD IN SPOTS,
MATRIX YELLOW TO ORANGE-COLORED PROBABLY
FROM ALTERATION OF GLASS AND OL;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 348.46
Core: 32 Top of Core Depth (m) : 345.46
Sect: 2 Top of Section Depth(m): 346.96
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 1 (2-12), 2 (12-17), 3 (17-21), 4 (21-30),
5A (30-36), 5B (35-41), 5C (41-45), 6 (46-52),
7A (55-64), 7B (64-68), 7C (68-75), 7D (75-82),
8A (84-93), 8B (92-110), 8C (110-118), 9A (121-130),
9B (130-138), 10 (141-148);
Texture : BRECCIA, PLAG-OL PHYRIC, PCE 8 HAS A GLASSY RIND;
Structure : CARB VEINS IN PCES 4+5A+6-10;
Alteration : MOD;
EXT
PCES 5A+5B AND PARTS OF 7A AND 7B;
OL HIGHLY ALTERED TO REDDISH BROWN MATERIAL
Comments : PCES 7B+7C ARE HYALOCLASTITE;
Phenocrysts: PLAGIOCLASE ( 15%)
OLIVINE ( 5%)
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 355.50
Core: 33 Top of Core Depth (m) : 354.00
Sect: 1 Top of Section Depth(m): 354.00
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1 (2-6), 3 (16-20), 4 (22-28), 5A (31-41),
5B (40-45), 5C (46-52), 6 (53-59), 7 (62-66),
8 (69-75), 9 (77-82), 10 (85-92), 11 (95-101),
12 (104-110), 13 (112-120), 14 (122-130),
15 (132-137), 16 (140-148);
Texture : PLAG-OL PHYRIC, PORPHYRITIC, PALAGONITIZED GLASS
RINDS ON PCES 4+5A+9+12;
Alteration : MOD
PCES 5B+8+10+11+14 HAVE CARB COATINGS;
Comments : COOLING UNIT BOUNDARIES ABOVE PCES 4+5A+12;
Phenocrysts: PLAGIOCLASE ( 20%)
PLAG MEGACRYSTS 1-2CM OCCUR IN PCES 1+4+8-10+15;
OLIVINE ( 5%)
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 355.50
Core: 33 Top of Core Depth (m) : 354.00
Sect: 1 Top of Section Depth(m): 354.00
LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;
Piece No. : PCE 2 (8-14);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC;
Alteration : MOD;
Vesicles : Size(mm): Percent: 2
VESICLES FILLED WITH DARK GREY MATERIAL;
Phenocrysts: PLAGIOCLASE ( 20%)
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
Leg : 45 Top/Bottom Interval(mm): 0/ 700 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 356.20
Core: 33 Top of Core Depth (m) : 354.00
Sect: 2 Top of Section Depth(m): 355.50
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 1 (3-11), 2 (11-17), 3 (19-30), 4 (41-45),
5 (47-49), 6A (52-57), 6B (52-57), 7 (60-64),
8 (66-69);
Texture : PLAG-OL PHYRIC, PORPHYRITIC,
FINE-GRAINED MATRIX;
Structure : CARB VEINLETS ARE FOUND IN THE UPPER PART OF PCE 1,
PCE 3 CONTAINS A CARB FILLED CAVITY 1CM IN DIAMETER;
Alteration : MOD;
Comments : PCE 8 MAY BE THE BASE OF A FLOW, THIS SECTION IS THE
DEEPEST EXTRUSIVE PHYRIC BASALT RECOVERED IN HOLE
395A;
Phenocrysts: PLAGIOCLASE ( 20%)
OLIVINE ( 3-5%)
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 720/1180 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 356.68
Core: 33 Top of Core Depth (m) : 354.00
Sect: 2 Top of Section Depth(m): 356.22
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 9 (72-81), 10 (83-89), 11 (92-97), 12 (98-102),
13 (104-109), 14 (111-118);
Texture : MATRIX IS COMPOSED OF FINE FRAGMENTS OF BASALT AND
BASALTIC GLASS ALTERED TO YELLOWISH BROWN COLOR
CEMENTED WITH CARB, CLASTS ARE APHYRIC FINE-GRAINED
BASALTS AND FRESH BASALTIC GLASS, CLAST IN PCE 9
PLAG XENOCRYSTS ARE RECOGNIZED;
Alteration : MOD;
EXT
PCES 13 AND 14;
FRESH
PART OF PCE 9;
Vesicles : VESICLES IN CLASTS VARY IN SIZE AND ABUNDANCE;
Size(mm): 0.25 Percent: 2
IN PCE 9;
Size(mm): 0.5-1 Percent:
IN PCE 10;
Size(mm): 0.25 Percent: 1
IN PCE 11;
Size(mm): 0.25 Percent: 3
IN PCE 14;
Phenocrysts: PLAGIOCLASE
XENOCRYSTS;
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 1210/1450 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 356.95
Core: 33 Top of Core Depth (m) : 354.00
Sect: 2 Top of Section Depth(m): 356.71
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 15A (121-129), 15B (130-145);
Texture : APHYRIC;
Alteration : MOD;
Comments : SIMILAR TO THE BASALTIC CLAST IN THE BRECCIA ZONE
(72-118) OF THIS CORE;
Vesicles : Size(mm): 0.25 Percent: 2
VESICULAR;
Leg : 45 Top/Bottom Interval(mm): 1060/1480 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 365.01
Core: 34 Top of Core Depth (m) : 363.53
Sect: 1 Top of Section Depth(m): 364.59
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (106-112), 2 (115-118), 3 (120-127),
4 (129-133), 5 (135-140), 6 (142-147);
Texture : APHYRIC, PCES 3-6 EACH CONTAIN ONE PLAG CRYSTAL
(UP TO 5MM) FROM THE ROUNDED SURFACE THEY APPEAR TO
BE XENOCRYSTS;
Alteration : MOD;
EXT
PCE 2 AND PART OF PCE 1;
PCES 1-3 HAVE CARB ENCRUSTED RINDS WHICH ARE
ALTERED TO A BROWNISH GREY-THESE RINDS MAY
INDICATE THE ORIGINAL SURFACE;
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 100/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 374.43
Core: 35 Top of Core Depth (m) : 372.93
Sect: 1 Top of Section Depth(m): 373.03
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (10-15), 2 (17-21), 3A (24-34), 3B (32-36),
4 (39-43), 5 (45-49), 6 (51-56), 7 (58-68),
8 (70-75), 9 (77-80), 10 (80-91), 11 (92-100),
12 (102-105), 13 (108-113), 14 (115-118),
15 (122-128), 16 (130-136), 17 (136-148);
Texture : APHYRIC, FINE-GRAINED, PCES 6 AND 7 HAVE GLASSY
EXTERIOR, PCE 17 HAS A GLASSY ZONE 1CM THICK AT THE
TOP;
Structure : CARB VEINS ARE FOUND IN ALL PCES;
Alteration : MOD
PCES 2-3B AND 12-17;
FRESH
PCES 4-11;
CARB ENCRUSTATIONS ARE FOUND ON ALL PCES;
Vesicles : Size(mm): Percent: 1
VESICLES 1% FILLED WITH LIGHT GRAY AND BLUISH
GRAY AND DARK GREEN MATERIAL;
Phenocrysts: PLAGIOCLASE ( <1%)
PCES 3A+7+10+11+15 CONTAIN <1% PLAG PHENOS;
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 30/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 383.94
Core: 36 Top of Core Depth (m) : 382.44
Sect: 1 Top of Section Depth(m): 382.47
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (3-7), 2A (8-14), 2B (14-20), 3 (21-26),
4 (27-33), FRAGMENTS (34-36), 5 (37-42), 6 (45-55),
7 (57-63), 8 (65-73), 9 (75-84), 10 (86-91),
11 (93-99), 12 (101-104), 13 (106-110),
14 (111-120), 15 (120-126), 16A (126-129),
16B (129-133), 17 (134-140), 18 (141-149);
Texture : APHYRIC, PCE 1 IS SLIGHTLY VARIOLITIC, PCES 15 AND
16A AND 16B ARE SLIGHTLY FINER GRAINED THAN OTHER
PCES, PCE 7 IS VERY FINE-GRAINED;
Structure : PCES 2B-6 HAVE CARB VEINLETS;
Alteration : MOD;
EXT
PCE 5 AND THE FRAGMENTS 34-36CM;
PCES 8+9+14+15+18 HAVE PALAG AND ZEOLITE COATINGS
WITH BLACK SPOTS(MN?);
Comments : THE SEQUENCE SUGGEST THIN GLASSY FLOWS OR PILLOWS;
Vesicles : Size(mm): Percent: 1
Location: Filling: CELAD
INCLUDING ALL EXCEPT PCE 4, ALL VESICLES ARE
FILLED WITH DARK GREEN MINERALS (CELAD?);
Size(mm): Percent: 3
Location: Filling: CELAD
IN PCE 4;
Phenocrysts: PLAGIOCLASE ( <1%)
Size(mm): 2
PRIMARILY IN PCES 1-6 PHENOS ARE ROUNDED
XENOCRYST?);
Replacement: CARBONATE
ZEOLITE
CELADONITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 240/1470 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 393.44
Core: 37 Top of Core Depth (m) : 391.97
Sect: 1 Top of Section Depth(m): 392.21
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (24-29), 2 (31-40), 3 (41-49), 4 (50-59),
5 (61-69), 6 (70-77), 7 (78-82), 8A (86-94),
8B (85-95), 8C (95-98), 9 (101-105), 10A (106-113),
10B (114-117), 10C (117-118), 11 (121-125),
12 (127-133), 13 (133-147);
Texture : APHYRIC, RARE PLAG PHENOS, PCES 1+3+10A HAVE GLASSY
RINDS-ON PCE 10A THE RIND IS 1-1.3CM THICK, ROCKS
GRADE FROM VERY FINE-GRAINED TO FINE-GRAINED AS ONE
GOES IN FROM GLASSY RINDS;
Structure : PCE 2 CONTAINS VEINS FILLED WITH WHITE MATERIAL,
PCES 8A-9 HAVE CRACKS LINED WITH WHITE MATERIAL;
Alteration : MOD
PCES 1 AND 4 AND 12 COATED WITH ALTERATION
PRODUCTS (MN SPOTS ON 1 AND 4);
Comments : MN SPOTS ON 1 AND 4;
Vesicles : Size(mm): <1 Percent: 1
IN PCES 1-3 AND 12, VESICLES IN PCE 2 FILLED WITH
DARK BRN MATERIAL, VESICLES IN PCES 8A-9 AND 12
FILLED WITH GREENISH WHITE MATERIAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
RARE PLAG PHENOS PRESENT;
Replacement: MANGANESE OXIDE
PCES 1 & 4;
Leg : 45 Top/Bottom Interval(mm): 720/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 402.85
Core: 38 Top of Core Depth (m) : 401.35
Sect: 1 Top of Section Depth(m): 402.07
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (72-78), 2 (79-83), 3 (83-87), 4 (88-94),
5 (95-101), 6 (102-107), 7 (108-112), 8 (113-121),
9 (122-127), 10 (128-134), 11 (135-141),
12 (142-148);
Texture : APHYRIC, VERY RARE PHENOS OF PLAG AND OL (PCES 1-6
AND 8 AND 10), PCE 9 HAS A GLASSY RIND AND IS
VARIOLITIC IN PART WITH NO PHENOS, PCE 6 CONTAINS
PATCHES OF ALTERED INTERSTITIAL GLASS;
Alteration : MOD
OL PHENOS GENERALLY ALTERED TO REDDISH BROWN
MATERIAL, PCE 5 HAS BROWN ALTERED SPOTS
0.5MM ACROSS (EITHER ALTERED OL OR PALAG);
Vesicles : Size(mm): <<1 Percent: <1
IN ALL PCES EXCEPT 7+11+12, PCES 1-4 VESICLES
PARTLY FILLED WITH GREY MATERIAL, PCES 8 AND 10
VESICLES FILLED WITH WHITE MATERIAL, VESICLES IN
9 EMPTY;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 2
IN PCE 5;
OLIVINE ( <1%)
IN PCE 8, FRESH OL PHENOS;
Leg : 45 Top/Bottom Interval(mm): 880/1470 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 412.36
Core: 39 Top of Core Depth (m) : 410.89
Sect: 1 Top of Section Depth(m): 411.77
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (88-94), 2 (95-99), 3 (101-107), 4 (108-112),
5 (113-117), 6 (118-124), 7 (125-131), 8 (132-140),
9 (142-147);
Texture : APHYRIC, PCE 8 IS VARIOLITIC AND HAS A GLASSY EDGE,
RARE PHENOS OF PLAG (UP TO 5MM) AND TR OL
MICROPHENOS;
Alteration : MOD
OL PARTLY ALTERED TO YELLOW BROWN MATERIAL
Comments : COOLING UNIT BOUNDARY PLACED ABOVE PCE 8;
Vesicles : Size(mm): <1 Percent: 1
PARTLY FILLED WITH GRAY AND WHITE MATERIAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 5
OLIVINE ( RARE%)
TRACE OL MICROPHENOS;
Leg : 45 Top/Bottom Interval(mm): 1380/1470 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 421.87
Core: 40 Top of Core Depth (m) : 420.40
Sect: 1 Top of Section Depth(m): 421.78
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (138-147);
Texture : APHYRIC, VARIOLITIC, TEXTURE FORMED BY QUENCHED PLAG
LATHS;
Structure : VEINLETS FILLED WITH CARB ARE PRESENT;
Alteration : MOD
WEATHERED SURFACE COATED BY ZEOL WITH BLACK SPOTS
(MN)-THIS COATING CONSISTS OF SMALL BLEBS SOMEWHAT
SPHERICAL IN SHAPE .1-.2MM IN DIAMETER GROWN
TOGETHER-THE BLEBS ARE CLEAR TO CLOUDY WITH A
SHINY LUSTER-A VERY IRREGULAR BLACK SHINY MATERIAL
IS SCATTERED IN THE COATING-A REDDISH BROWN STAIN
ON THE COATING IS ALSO PRESENT IN VARIABLE DEGREES
Groundmass : PLAGIOCLASE
QUENCHED;
Replacement: ZEOLITE
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 650/1480 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 429.53
Core: 41 Top of Core Depth (m) : 428.05
Sect: 1 Top of Section Depth(m): 428.70
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (65-79), 2 (72-75), 3 (77-83), 4 (85-93),
5 (96-101), 6 (104-111), 7 (113-118), 8 (121-127),
9 (130-136), 10 (139-148);
Texture : APHYRIC, PCE 4 IS SUB-VARIOLITIC, RARE PLAG PHENOS
IN PCES 4+10, PCES 2+3 HAVE GLASSY RINDS;
Alteration : FRESH;
MOD
PCES 4 AND 8 AND UPPER PART OF 10;
EXT
PCE 9;
PCES 8-10 HAVE ZEOLITE COATING, COATING ON PCE 8
HAS 0.2-0.4MM SEMI-SPHERICAL BLEBS WITH PINKISH
CLOUDY LUSTER-UNDERLYING THIS IS A THINNER DULL
YELLOW COATING, PCE 9 IS SIMILAR BUT THE BLEBS
ARE SMALLER AND LACK THE PINKISH COLOR, THE YELLOW
LAYER IS PRESENT ONLY IN SOME AREAS;
Comments : PCES 3+4+10 HAVE MN SPOTS;
Vesicles : Size(mm): TO 1 Percent: 1
IN PCES 1-3, COATED WITH GREEN MATERIAL;
Size(mm): Percent: 2
IN PCES 4-9, FILLED WITH DARK GFEEN MATERIAL;
Size(mm): Percent: 1
IN PCE 10;
Phenocrysts: PLAGIOCLASE ( RARE%)
RARE PLAG PHENOS IN PCES 4+10;
Replacement: ZEOLITE
MANGANESE OXIDE
Leg : 45 Top/Bottom Interval(mm): 700/1480 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 439.04
Core: 42 Top of Core Depth (m) : 437.56
Sect: 1 Top of Section Depth(m): 438.26
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (70-76), 3 (84-89), 4 (92-96), 6 (107-112),
7 (114-120), 8 (122-131), 9 (133-148), 10 (141-148);
Texture : APHYRIC, PCE 3+4+6+7 RARE PLAG AND OL MICROPHENOS,
PCE 8 RARE PLAG PHENOS, PCE 4 IS GLASSY, PCES 6+7+10
ARE FINE-GRAINED;
Structure : PCE 8 IS CUT BY A CARB-ZEOLITE VEIN, CRACKS PRESENT;
Alteration : FRESH;
MOD
PCES 8+9;
PCE 10 HAS A ZEOLITE COATING AND MN SPOTS(?), IN
PCE 8 ALTERATION IS MORE INTENSE ALONG CRACKS;
Comments : POSSIBLE MN SPOTS ON PCE 10;
Vesicles : Size(mm): 0.3 Percent: 1-3
IN PCES 3+4+6;
Size(mm): Percent: 3
IN PCE 7;
Size(mm): 2 Percent:
Location: Filling: ZEOLITES
IN PCE 9;
Phenocrysts: PLAGIOCLASE ( RARE%)
RARE PLAG MICROPHENOS, RARE PHENOS IN PCE 8;
OLIVINE ( RARE%)
RARE OL MICROPHENOS;
Replacement: CARBONATE
ZEOLITE
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 2 (78-82), 5 (98-105);
Texture : SPARSELY PHYRIC;
Alteration : ZEOLITE COATING ON PCE 5 VARIES FROM PINKISH BLEBS
(0.1-0.4CM) TO NO BLEBS AND CLOUDY COLOR TO CLEAR
AND SHINY NEAR GLOSSY APPEARANCE-YELLOW COATING
UNDERLIES THE BLEBS;
Phenocrysts: OLIVINE ( 1-2%)
PLAGIOCLASE ( RARE%)
Replacement: ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 1200/1470 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 448.56
Core: 43 Top of Core Depth (m) : 447.09
Sect: 1 Top of Section Depth(m): 448.29
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (120-124), 2 (126-130), 3 (131-135),
4 (137-141), 5 (142-147);
Texture : APHYRIC;
Alteration : MOD;
FRESH
PART OF PCES 2+3+4 AND ALL OF 5;
ALTERATION RIMS ON PCES 1-4, PCE 2 HAS A YELLOW TO
ORANGE COATING WITH DULL LUSTER, BLACK BLOTCHES
OCCUR AS WELL AS ONE OR TWO BLEBS ON PCE 2;
Vesicles : Size(mm): 1 Percent: 1-3
VESICULAR;
Leg : 45 Top/Bottom Interval(mm): 1170/1480 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 467.49
Core: 45 Top of Core Depth (m) : 466.01
Sect: 1 Top of Section Depth(m): 467.18
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (117-120), 2 (121-127), 3 (128-135),
4 (136-142), 5 (143-148);
Texture : APHYRIC, FINE-GRAINED, PCES 2 AND 3 HAVE GLASSY
RINDS;
Alteration : MOD;
FRESH
PCE 2;
EXT
PCE 1;
PCES 1 AND 3 ARE COATED WITH ZEOLITES, PCE 1 HAS
0.1-0.3MM BLEBS THAT ARE CLOUDY AND COLORLESS WITH
MOD LUSTER, PCE 3 COATINGS ARE YELLOW-ORANGE WITH
DULL LUSTER AND ALSO HAS WHITE WITH YELLOW
STAINING WITH HINT OF INTERGROWN BLEBS;
Vesicles : Size(mm): Percent: 3
3% IN PCE 1;
Size(mm): Percent: 2
VESICLES 2% IN PCES 2-5;
Replacement: ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 350/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 477.03
Core: 46 Top of Core Depth (m) : 475.53
Sect: 1 Top of Section Depth(m): 475.88
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (35-44), 2 (46-52), 3 (53-60), 4 (62-66),
5 (68-73), 6 (76-80), 7 (82-87), 8 (88-95),
9 (97-102), 10 (105-109), 11 (111-117),
12 (119-130), 13 (132-138), 14 (140-147);
Texture : SINGLE PLAG-OL PHENO (XENOCRYST), PCE 8 CONTAINS
SOME GLASS, PCE 9 HAS A GLASSY RIM;
Structure : PCE 1 HAS A ZEOLITE (?) FILLED CRACK;
Alteration : MOD
PCES 2 AND 10-14 AND PARTS OF 1 AND 3 AND 5-7;
FRESH
PCES 4+8+9 AND PARTS OF PCES 1+3 AND 5-7;
WEATHERED RINDS ON PCES 3+6+7, PCES 13 AND 14 ARE
ENCRUSTED WITH CARB;
Comments : PCE 14 HAS MN SPOTS;
Vesicles : Size(mm): 1 Percent: 3
IN PCES 1 AND 3;
Size(mm): Percent: 1-2
Location: Filling: ZEOLITES
ALL REMAINING PCES, SOME VESICLES FILLED BY WHITE
OR GREENISH MATERIAL (ZEOLITES?);
Replacement: CARBONATE
ZEOLITE
ID UNCERTAIN;
MANGANESE OXIDE
Leg : 45 Top/Bottom Interval(mm): 220/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 486.48
Core: 47 Top of Core Depth (m) : 484.98
Sect: 1 Top of Section Depth(m): 485.20
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (22-27), 2 (28-32), 3 (33-40), 4 (41-47),
5 (47-53), 6 (54-60), 7 (61-68), 8 (69-74),
9 (76-81), 10 (82-89), 11 (91-97), 12 (98-104),
13 (105-115), 14 (116-121), 15 (122-132),
16 (134-139), 17 (141-148);
Texture : APHYRIC, VARIOLITIC, RARE ROUNDED PLAG PHENOS
(XENOCRYSTS?);
Structure : PCES 1 AND 4 AND 14-17 CONTAIN CARB VEINLETS, PCE 17
CONTAINS THE LARGEST AMOUNT OF VEINLETS;
Alteration : MOD
PCES 2-13;
EXT
PCES 14-17;
ZEOLITE COATINGS ON WEATHERED SURFACE OF PCE 1 AND
6-11 AND 15-16, COATING IS COMPOSED OF BLEBS WITH
A MOD LUSTER OVER A YELLOWISH COATING WITH A DULL
LUSTER, SOME BLACK BLOTCHES ARE ALSO PRESENT;
Vesicles : Size(mm): Percent: 1
Location: Filling: CLAY
FILLED WITH DARK GREY CLAY MINERALS;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): 1-3
RARE ROUNDED PLAG PHENOS (XENOCRYSTS?);
Replacement: CARBONATE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 487.98
Core: 47 Top of Core Depth (m) : 484.98
Sect: 2 Top of Section Depth(m): 486.48
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-10),2 (12-19), 3 (21-26), 4 (27-32),
5A (33-44), 5B (33-44), 5C (33-44), 5D (33-44),
6A (46-60), 6B (46-60), 6C (46-60), 6D (46-60),
7A (62-66), 7B (65-70), 8 (71-77), 9 (78-84),
10A (85-90), 10B (87-100), 11 (101-111),
12A (113-123), 12B (113-132), 12C (123-132),
13 (135-141), 14 (143-147);
Texture : APHYRIC, RARE PLAG AND OL PHENOS (XENOCRYSTS?) IN
PCES 8+10+12+14;
Structure : CARB VEINLETS IN PCES 6+7+10+12+13;
Alteration : MOD
IN PCES 1-9 AND 11 AND 14;
EXT
IN PCES 10A AND 10B AND 12A-13;
ZEOLITE ENCRUSTATION PRESENT;
Vesicles : Size(mm): Percent: 1-2
Location: Filling: ZEOLITES
VESICLES FILLED WITH DARK GREEN MATERIAL, SOME
ALSO CONTAIN ZEOLITES;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 10
OLIVINE ( RARE%)
RARE PLAG AND OL PHENOS (XENOCRYSTS?) IN PCES 8+
10+12+14, IN PCE 10 PHENOS UP TO 1CM;
Replacement: CARBONATE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 495.85
Core: 48 Top of Core Depth (m) : 494.35
Sect: 1 Top of Section Depth(m): 494.35
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-10), 2 (11-15), 3 (15-23), 4 (24-30),
5 (31-42), 6A (43-49), 6B (43-49), 7A (51-54),
7B (54-60), 7C (50-52), 7D (52-56), 8 (60-67),
9 (69-75), 10A (76-84), 10B (76-84), 11 (85-91),
12 (92-100), 13 (101-106), 14 (107-111),
15 (112-121), 16 (122-124), 17A (126-129),
17B (125-129), 17C (128-135), 17D (126-131),
18A (136-141), 18B (136-141), 19A (142-148),
19B (142-148);
Texture : APHYRIC, FINE-GRAINED, RARE PLAG PHENOS FOUND
THROUGHOUT THE SECTION, PCE 5 HAS A GLASSY END;
Structure : PCES 1+4+5 HAVE CRACKS, IN 4 AND 5 THE CRACKS ARE
FILLED WITH ZEOLITES;
Alteration : MOD;
EXT
PCES 1+5+15+19A+19B;
OL ALTERED TO REDDISH BROWN MATERIAL IN MANY
CASES;
Vesicles : Size(mm): <1 Percent: 1
PERTAINING TO ALL PCES BUT 12;
Size(mm): Percent: 3
Location: Filling: ZEOLITES
VESICLES PCE 12 FILLED WITH WHITE (ZEOLITES?) OR
GREEN MATERIAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
RARE PLAG PHENOS FOUND THROUGHOUT THE SECTION;
OLIVINE
OL PHENOS FOUND IN PCES 7A-10+12+14-15+17A-19B;
Replacement: ZEOLITE
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 240/ 530 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 504.40
Core: 49 Top of Core Depth (m) : 503.87
Sect: 1 Top of Section Depth(m): 504.11
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (24-30), 2 (33-39), 3 (41-48), 4 (50-53);
Texture : APHYRIC, FINE-GRAINED, RARE PLAG PHENOS;
Structure : VEINS FILLED WITH WHITE MINERALS (ZEOLITES?);
Alteration : MOD;
EXT
PCE 2;
Comments : PCE 2 IS COLORED PALE BROWN DUE TO ALTERATION;
Phenocrysts: PLAGIOCLASE ( RARE%)
Replacement: ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 550/1500 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 505.37
Core: 49 Top of Core Depth (m) : 503.87
Sect: 1 Top of Section Depth(m): 504.42
LITHOLOGY: VOLCANIC BRECCIA;
Piece No. : PCE 5 (56-62), 6A (64-70), 6B (70-76), 6C (75-82),
6D (82-90), 6E (90-98), 7 (101-104), 8 (107-116),
9A (118-128), 9B (128-136), 9C (136-141),
9D (141-148);
Texture : ANGULAR CLASTS OF APHYRIC BASALT CEMENTED WITH AN
AGGREGATE OF PLAG AND BASALTIC GLASS, ONE CLAST IN
PCE 5 CONTAINS OL PHENOS;
Structure : THIN VEINS AND PATCHES OF WHITISH MATERIAL
(ZEOLITES?) IN PCES 6C AND 8-9B;
Alteration : FRESH
CLASTS;
MOD
MATRIX;
ALTERATION OF CLASTS INCREASES DOWN CORE;
Comments : PCES 9A AND 9B ARE MORE LITHIFIED THAN PCES 6-8,
GNDMASS OCHRE BROWN IN 5 GRADING TO DARK BROWN IN
9D;
Replacement: ZEOLITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 0/ 100 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 505.47
Core: 49 Top of Core Depth (m) : 503.87
Sect: 2 Top of Section Depth(m): 505.37
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 1 (2-10);
Texture : APHYRIC BASALTIC CLASTS IN A MATRIX OF BASALTIC
GLASS AND PLAG FRAGMENTS, THE LARGEST CLAST HAS
PHENOS OF OL AND PLAG, ONE CLAST HAS A GLASSY CORE;
Alteration : MOD
GLASSY CLAST HAS YELLOW ALTERATION ON THE
SURFACE (CLAY?);
Comments : GNDMASS DARK BROWN;
Replacement: CLAY MINERALS
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 110/1470 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 506.84
Core: 49 Top of Core Depth (m) : 503.87
Sect: 2 Top of Section Depth(m): 505.48
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 2 (11-17), 3 (18-23), 4 (25-34), 5 (35-39),
6 (40-45), 7 (47-54), 8 (56-66), 9 (66-72),
10 (74-79), 11 (80-90), 12 (91-97), 13 (98-110),
14 (111-115), 15 (116-121), 16 (122-129),
17 (131-139), 18 (141-147);
Texture : APHYRIC, PCE 2 VERY FINE-GRAINED GLASSY IN PART,
RARE PLAG AND OL MICROPHENOS IN PCE 1, PCE 3 IS NEAR
GLASSY VERY FINE-GRAINED, LARGE BUT RARE OL
PHENOS IN PCE 3, PCES 4-18 RARE OL MICROPHENOS, PCES
4-18 FINE-GRAINED;
Structure : CARB VEINS .05MM ACROSS, IN PCE 11 NON-CARB MATERIAL
IS ALSO PRESENT AS VEIN FILLING;
Alteration : MOD
PCES 5-18;
FRESH
PCES 2 AND 3;
EXT
PCE 4;
ALTERATION CONCENTRATED ALONG VEINS WHERE BASALT
IS COLORED PALE BROWN, PCE 7 HAS A BLEB COATING
(BLEBS 0.3-2MM);
Vesicles : Size(mm): Percent: 1
IN PCES 4-12, EMPTY;
VESICLES IN PCES 13-18 FILLED WITH WHITE
MATERIAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
OLIVINE ( RARE%)
RARE PLAG AND OL MICROPHENOS IN PCE 1, RARE OL
MICROPHENOS IN PCES 4-18, LARGE BUT RARE OL
PHENOS IN PCE 3;
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 720/1480 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 514.86
Core: 50 Top of Core Depth (m) : 513.38
Sect: 1 Top of Section Depth(m): 514.10
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (72-77), 2 (78-84), 3 (86-92), 4 (93-99),
5 (100-110), 6 (111-120), 7 (121-129), 8 (130-136),
9 (138-148);
Texture : APHYRIC, PCE 1-6 VERY FINE-GRAINED, 7-9 SLIGHTLY
COARSER GRAINED, RARE PHENOS OF PLAG AND OL IN PCES
1-4 AND 7, PCE 8 AND 9 CONTAIN RARE PLAG PHENOS;
Structure : MANY PCES HAVE CRACKS LINED WITH CARB AND OTHER
WHITE SECONDARY MINERALS, A CARB VEIN CUTS PCE 5,
SOME FRACTURES HAVE AN OXIDIZED COATING POSSIBLY
WITH MN SPOTS;
Alteration : FRESH
PCES 1-3;
MOD
PCES 4-9;
Comments : SOME FRACTURES HAVE AN OXIDIZED COATING POSSIBLY
WITH MN SPOTS;
Vesicles : Size(mm): Percent: 1-2
VESICLES LOCALLY EMPTY OR FILLED WITH WHITISH
OR GREENISH MATERIAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
PCES 8 AND 9 CONTAIN RARE PLAG PHENOS;
OLIVINE ( RARE%)
RARE PHENOS IN PCES 1-4 AND 7;
Leg : 45 Top/Bottom Interval(mm): 50/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 516.38
Core: 50 Top of Core Depth (m) : 513.38
Sect: 2 Top of Section Depth(m): 514.93
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (5-14), 2 (17-24), 3 (25-33), 4 (34-42),
5 (42-49), 6 (50-56), 7 (57-66), 8 (67-76),
9 (77-83), 10 (84-98), 11 (99-108), 12 (109-118),
13A (119-127), 13B (119-122), 13C (122-129),
14 (130-139), 15 (140-148);
Texture : APHYRIC, FINE-GRAINED, PCES 1-5 AND 8-12 ARE
SUB-VARIOLITIC, PCE 15 IS VARIOLITIC, PCES 2+4+5+7+
8+9-12 HAVE RARE PLAG PHENOS, RARE OL AND PLAG
PHENOS IN PCES 2 AND 3, PCE 15 HAS A GLASSY RIND;
Structure : PCES 1-3+7+10+11+13A HAVE CRACKS FILLED WITH
ZEOLITES(?);
Alteration : MOD
PCES 1-7 AND 12-15;
EXT
PCES 8-11;
PCE 10 HAS A ALTERATION RIND, PCES 1+8+9 HAVE A
CARB COATING COVERING A LAYER OF WHITE BLEBS;
Comments : A COOLING UNIT BOUNDARY IS PLACED ABOVE PCE 15;
Vesicles : Size(mm): Percent: 1
VESICLES IN PCES 1-5 AND 7-12, FILLED WITH BLUISH-
GRAY MINERALS;
Location: Filling: ZEOLITES
VESICLES IN PCE 15 FILLED WITH ZEOLITES(?);
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 3
OLIVINE
PCES 2+4+5+7+8+9-12 HAVE RARE PLAG PHENOS WITH MAX
SIZE OF 3MM, RARE OL AND PLAG PHENOS IN PCES 2 AND
3;
Replacement: CARBONATE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 910/1470 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 524.44
Core: 51 Top of Core Depth (m) : 522.97
Sect: 1 Top of Section Depth(m): 523.88
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (91-96), 2 (97-107), 3 (109-117), 4 (118-124),
5 (125-132), 6 (133-137), 7 (138-147);
Texture : APHYRIC, PCES 5 AND 7 ARE SUB-VARIOLITIC, RARE PLAG
PHENOS;
Structure : PCE 6 HAS A IRREGULAR DRUSE FILLED WITH CARB AND/OR
WHITE ACICULAR CRYSTALS AND GRAY MINERALS, CRACKS
PRESENT;
Alteration : MOD;
EXT
PCE 4;
WEATHERED SURFACE ON PCE 1 IS COATED WITH CARB AND
REDDISH-PINK MINERALS ASSOCIATED WITH BLACK SPOTS
(MN?), PCE 2 HAS A 3 LAYER COATING - 2 BLEB LAYERS
SEPARATED BY CARB - THIS APPEARS TO BE A CRACK
FILLING, PCE 4 IS COATED WITH YELLOWISH MATERIAL
WITH BLACK SPOTS;
Comments : PCE 6 IS TOO SMALL TO DESCRIBE (STORED IN A TUBE);
Vesicles : Size(mm): Percent: <1
VESICLES IN PCES 1-4 FILLED WITH BLUISH-GRAY
MINERALS;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 2
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 525.97
Core: 51 Top of Core Depth (m) : 522.97
Sect: 2 Top of Section Depth(m): 524.47
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-7), 2 (8-15), 3 (16-21), 4 (22-31),
5 (32-35), 6 (36-40), 7 (40-45), 8 (46-49),
9 (50-60), 10 (61-71), 11 (72-81), 12 (82-88),
13 (89-95), 14 (96-102), 15 (104-111), 16 (112-118),
17 (119-127), 18 (130-134), 19 (135-141),
20 (142-148);
Texture : APHYRIC, PCES 1 AND 2 ARE SUBVARIOLITIC WITH QUENCH
PLAG SWORLS, ROUNDED PLAG PHENOS IN PCES 1 AND 4-6
AND 7 AND 17, PCE 6 HAS A GLASSY RIND AND PCE 16 IS
VERY FINE-GRAINED WITH GLASS ALTERED TO PALAG;
Structure : PCES 1 AND 2 AND 9 HAVE CARB COATED CRACKS;
Alteration : MOD
PCES 1-8 AND 12-20;
EXT
PCES 9-11;
PCES 17-20 ARE ENCRUSTED WITH CARB AND ZEOLITES,
PCE 7 IS CARB ENCRUSTED;
Comments : COOLING UNIT BOUNDARIES ARE PLACED ABOVE PCE 6 AND
16;
Vesicles : Size(mm): Percent: 1
VESICLES 1% FILLED WITH PALE GREEN MATERIAL IN
PCES 3-5 AND 9-15 AND 17-20;
Size(mm): Percent: 1
IN PCES 6-8, EMPTY;
Phenocrysts: PLAGIOCLASE
Size(mm): TO 5
ROUNDED PLAG PHENOS IN PCE 1 (4MM) AND 4-6 AND 7
(SIZE 5MM) AND 17;
Replacement: CARBONATE
ZEOLITE
PALAGONITE
GLASS ALTERED TO PALAG;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 527.47
Core: 51 Top of Core Depth (m) : 522.97
Sect: 3 Top of Section Depth(m): 525.97
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-9), 2 (10-17), 3 (17-25), 4 (26-32),
5A (32-42), 5B (32-42), 6 (43-51), 7 (52-57),
8 (58-65), 9 (66-71), 10 (72-77), 11 (79-85),
12 (87-92), 13 (92-99), 14 (100-105), 15 (106-110),
16 (110-116), 17 (117-125), 18 (125-130),
19 (131-137), 20 (138-143), 21 (144-148);
Texture : APHYRIC, PCE 18 IS SUBVARIOLITIC, RARE PLAG PHENOS,
RARE OL MICROPHENOS;
Structure : YELLOW BROWN ENCRUSTATION AT CRACKS IN PCES 3-5;
Alteration : MOD
IN PCES 1-3+5A+5B+9-14+17-21;
EXT
PCES 4+6-8+15+16;
CRUSTS OF ZEOLITE AND CARB FOUND ON PCES 1+2+4,
PCE 4 ALSO HAS FE.HYDROXIDE;
Vesicles : Size(mm): 1 Percent: 1
VESICLES PARTLY FILLED WITH PALE DARK GREEN AND
WHITE MATERIAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): 0.5
IN PCES 1-6 AND 9-11;
PLAGIOCLASE ( RARE%)
Size(mm): 2
IN PCES 7 AND 8;
PLAGIOCLASE ( RARE%)
Size(mm): 8
IN PCES 12-14 AND 16-17;
OLIVINE
OL MICROPHENOS IN PCE 18;
PLAGIOCLASE ( 2%)
OLIVINE ( 1%)
IN PCE 21;
Replacement: CARBONATE
ZEOLITE
FERROUS HYDROX MINS
PCE 4;
Leg : 45 Top/Bottom Interval(mm): 470/1480 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 533.72
Core: 52 Top of Core Depth (m) : 532.24
Sect: 1 Top of Section Depth(m): 532.71
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (47-54), 2 (55-61), 3 (62-70), 4 (71-77),
5 (78-81), 6 (83-91), 7 (92-104), 8A (105-108),
8B (107-112), 9 (113-120), 10 (121-131),
11 (133-137), 12 (138-142), 13 (143-148);
Texture : APHYRIC, VARIOLITIC TEXTURE IN PCES 3-5, RARE
ROUNDED PLAG PHENOS, RINDS ARE FOUND ON 2 AND 3,
GLASS ON PCE 1;
Structure : PCE 4 HAS CALCITE VEINING, PCES 6 AND 9-12 HAVE
CRACKS FILLED WITH CARB;
Alteration : EXT
PCES 4-7 AND 9-13 AS WELL AS PARTS OF 2 AND 3;
MOD
PCES 2 AND 3 AND 8A AND 8B;
ZEOLITE AND OTHER ALTERATION PRODUCTS COAT PCES
3-8B;
Comments : PCE 13 IS FRAGMENTED;
Vesicles : Size(mm): 1 Percent: <1
Location: Filling: CLAYS
IN PCES 1 AND 2, LOCALLY FILLED WITH WHITE AND
GREEN MINERALS (CLAYS);
Phenocrysts: PLAGIOCLASE ( RARE%)
RARE ROUNDED PLAG PHENOS IN PCES 1-5 AND 9-12;
Replacement: CARBONATE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 30/1480 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 535.22
Core: 52 Top of Core Depth (m) : 532.24
Sect: 2 Top of Section Depth(m): 533.77
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (3-9), 2 (10-17), 3 (19-27), 4 (28-34),
5 (36-41), 6 (43-48), 7A (50-59), 7B (58-63),
7C (62-68), 8 (69-75), 9 (76-81), 10A (82-87),
10B (86-91), 11 (92-95), 12 (96-104), 13 (105-111),
14 (112-118), 15 (120-126), 16 (127-132),
17 (133-139), 18A (140-147), 18B (140-147),
18C (140-147);
Texture : APHYRIC, PCE 9 IS VARIOLITIC, RARE PLAG AND OL
PHENOS, RINDS ARE FOUND ON PCES 9 AND 10A;
Structure : CRACKS FILLED WITH CARB IN PCES 1-8 AND 10-17;
Alteration : EXT
PCES 1-3+7A-8+11+12+18A-18C;
MOD
PCES 4-6 AND 9-10B;
Comments : PCES 1-6 COATED WITH ZEOLITES(?);
Vesicles : VESICLES IN PCES 1-6+9+13-17;
Phenocrysts: PLAGIOCLASE ( RARE%)
OLIVINE ( RARE%)
PCES 1-6+10A-17 CONTAIN RARE PLAG PHENOS, PCES 7-9
CONTAIN RARE PLAG AND OL PHENOS;
Replacement: CARBONATE
ZEOLITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 60/1450 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 542.96
Core: 53 Top of Core Depth (m) : 541.51
Sect: 1 Top of Section Depth(m): 541.57
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (6-15), 2 (18-23), 3 (15-33), 4 (36-43),
5 (46-54), 6 (56-64), 7 (66-73), 8 (75-86),
9 (88-92), 10 (93-102), 11 (104-113), 12 (115-126),
13 (128-133), 14 (134-145);
Texture : APHYRIC, GLASSY IN PCE 1, VERY FINE-GRAINED IN PCES
2-3 AND 10-14, FINE-GRAINED IN PCES 4-9, PCE 1 ALSO
HAS A GLASSY RIND, RARE PLAG AND OL PHENOS PRESENT;
Structure : CRACKS IN PCES 4-14 CONTAIN CALCITE IN MANY PCES;
Alteration : FRESH
PCE 1;
MOD
PCES 2-4;
EXT
PCES 5-14;
Vesicles : Size(mm): <1 Percent: 1
VESICLES IN PCE 3 AND 10-14 FILLED WITH WHITE
MATERIAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
IN PCES 1+10-14, IN PCES 4-9;
OLIVINE ( RARE%)
RARE OL MICROPHENOS FOUND IN PCES 2-3, PCES 4-9
CONTAIN OL PHENOS;
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/1480 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 544.49
Core: 53 Top of Core Depth (m) : 541.51
Sect: 2 Top of Section Depth(m): 543.01
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-12), 2 (13-16), 3 (17-30), 4 (31-44),
5 (45-50), 6 (51-60), 7 (61-70), 8 (71-80),
9 (81-94), 10 (95-101), 11 (102-109), 12 (111-124),
13 (126-135), 14 (138-147);
Texture : APHYRIC, FINE-GRAINED, VERY RARE PHENOS OF PLAG
PRESENT, PCE 6 IS VERY FINE-GRAINED;
Structure : CRACKS ARE COMMON AND OFTEN LINED WITH A PALE YELLOW
TO ORANGE MINERAL AND A WHITE TRANSLUSCENT MINERAL
(CHLORITE?, ZEOLITES?), CRACKS MAY BE CONJUGATE
FRACTURE (SEE DIAGRAM IN ICD);
Alteration : MOD
PCES 1-4 AND 7-12;
EXT
PCES 13 AND 14;
FRESH
PCE 6;
Comments : PCES OF CORE BROKE UP DURING CUTTING, FRACTURED PCES
WERE TAPED TOGETHER BEFORE CUTTING, PCE 9 AND 12
ARE FRAGMENTS;
Vesicles : PCES 1-4 MORE VESICULAR THAN 5-14;
Phenocrysts: PLAGIOCLASE ( RARE%)
VERY RARE PLAG PHENOS PRESENT;
Replacement: CHLORITE
ID UNCERTAIN;
ZEOLITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 140/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 546.01
Core: 54 Top of Core Depth (m) : 544.51
Sect: 1 Top of Section Depth(m): 544.65
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (14-20), 2 (21-26), 3 (27-32), 4 (34-40),
5 (41-46), 6 (47-51), 7 (52-60), 8 (60-64),
9 (66-69), 10A (71-81), 10B (81-86), 11 (87-94),
12A (95-101), 12B (101-112), 12C (112-122),
12D (123-129), 12E (129-140), 12F (140-150);
Texture : APHYRIC, VERY FINE-GRAINED IN PCES 1-2 AND 6, PCES
3-5 AND 7 ARE GLASSY, PCES 8-12F ARE FINE-GRAINED,
SLIGHT VARIOLITIC TEXTURE IS FOUND IN PCES 12A-12F,
PCES 1 AND 6 HAVE GLASS RINDS, RARE PHENOS OF PLAG
AND OL;
Structure : CARB VEINLETS IN PCES 2 AND 3-5 AND 7, VEINLETS IN
PCE 7 ARE CONCENTRATED ALONG SHEAR PLANES;
Alteration : FRESH
PCES 1+3+6+8-10B;
MOD
PCES 2+5+12A-12F;
EXT
PCES 4+7+11;
CARB AND ZEOLITE COATINGS OCCUR ON PCES 1 AND 4-7;
Vesicles : Size(mm): Percent: 1
VESICLES IN PCES 1-2 AND 12A-12B;
Size(mm): Percent: <1
VESICLES IN PCES 8-11 AND 12C-12F;
Size(mm): Percent: 2
VESICLES IN PCE 6, FILLED WITH PALE GREEN MATERIAL
LOCALLY OR EMPTY;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 6
RARE PHENOS OF ROUNDED PLAG IN PCES 8-12F;
OLIVINE ( RARE%)
RARE OL PHENOS ARE ALSO FOUND IN PCES 3-5 AND 7;
Replacement: CARBONATE
CHLORITE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 547.51
Core: 54 Top of Core Depth (m) : 544.51
Sect: 2 Top of Section Depth(m): 546.01
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (3-7), 2 (9-13), 3 (14-19), 4 (20-28),
5A (29-34), 5B (29-34), 5C (34-44), 6A (46-51),
6B (46-51), 7 (52-57), 8A (59-64), 8B (59-64),
9 (65-75), 10A (75-82), 10B (82-93), 11 (94-99),
12 (100-104), 13 (105-111), 14 (112-121),
15 (122-130), 16 (131-136), 17 (137-141),
18 (142-148);
Texture : APHYRIC, FINE-GRAINED, RARE PLAG PHENOS, PCES 6 AND
8 HAVE GLASSY RINDS, PCE 11 HAS A PARTLY FRESH GLASS
EXTERIOR;
Structure : CRACKS IN PCES 9 AND 10 ARE FILLED WITH CARB AND
GREENISH WHITE SPHERICAL MINERAL AGGREGATES, IN PCE
13 CRACKS OCCUR WHICH ARE FILLED WITH CARB AND
GREENISH-GRAY SPHERICAL MINERALS AND FE.HYDRX CRACKS
IN PCE 14 ARE THE SAME EXCEPT THEY LACK THE
FE.HYDRYX, PCE 16 CONTAINS CRACKS FILLED WITH CARB
AND YELLOWISH-GRAY SPHERICAL MINERALS, PCES 10A-10B
CONTAIN SLICKENSIDE WITH A BROWNISH GREEN MINERAL
(CHLORITE?);
Alteration : MOD
PCES 1+5A-5B+7+8+18;
EXT
PCES 2-4+6A+6B+9-17;
WEATHERED SURFACE ON PCE 1 IS PARTLY COVERED WITH
GREENISH GRAY SPHERICAL MINERALS, MN SPOTS AND
WHITE SPHERICAL MINERAL AGGREGATES OCCUR ON PCE 6;
Comments : MN SPOTS OCCUR IN PCE 6;
Vesicles : Size(mm): Percent: <1
VESICLES IN PCE 1-5C, VESICLES IN PCE 1 FILLED
WITH BLUISH GRAY MINERALS, PCES 5A-5C CONTAIN
VESICLES FILLED WITH GREENISH GRAY SPHERICAL
AGGREGATES AND DARK GREEN (CHLORITE) MINERALS-
THESE MINERALS ALSO LINE A DRUSE AND NUMEROUS
CRACKS;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): 8 MAX
IN PCES 1-6 AND 17;
Replacement: CARBONATE
CHLORITE
MANGANESE OXIDE
Leg : 45 Top/Bottom Interval(mm): 340/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 552.52
Core: 55 Top of Core Depth (m) : 551.02
Sect: 1 Top of Section Depth(m): 551.36
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (34-40), 2 (41-47), 3 (48-54), 4A (56-69),
4B (69-77), 5 (79-87), 6 (89-101), 7 (103-116),
8 (117-126), 9 (127-137), 10 (138-148);
Texture : APHYRIC, VARIOLITES ARE FOUND BETWEEN GLASS RIND
AND NORMAL PART ON PCE 3, SUBVARIOLITIC TEXTURE IS
OBSERVED ON THE CUT SURFACE OF PCE 6, RARE PLAG
PHENOS ARE FOUND, PCE 3 HAS A GLASS RIND AT THE
BOTTOM;
Structure : CRACK PLANES IN PCES 4A-4B AND 6-7 COATED WITH WHITE
AND LIGHT BROWN MINERALS AND ALSO FE.HYDRX IN 6-7,
DRUSES ARE FOUND IN PCE 8 FILLED WITH SPHERICAL AND
FINE-GRAINED CARB AND LIGHT GREENISH WHITE AND LIGHT
BROWN AND GREY SPHERICAL MINERALS;
Alteration : FRESH
PCES 3 AND 4A;
MOD
PCES 1+2+4B+6-9;
EXT
PCES 5 AND 10;
Comments : COOLING UNIT BOUNDARY BETWEEN PCES 3 AND 4A;
Vesicles : Size(mm): Percent: <1
IN PCE 1 FILLED WITH WHITE AND/OR YELLOW MINERALS,
PCES 4A FILLED WITH WHITE AND DARK GREEN MINERALS;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 6
RARE PLAG PHENOS ARE FOUND IN PCES 1 (3MM MAX) AND
PCE 2 (6MM MAX) AND 3 AND 6-10;
Replacement: CARBONATE
FERROUS HYDROX MINS
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 554.02
Core: 55 Top of Core Depth (m) : 551.02
Sect: 2 Top of Section Depth(m): 552.52
LITHOLOGY: APHYRIC BASALT;
Piece No. : 1A (2-12), 1B (12-20), 1C (20-37), 2 (37-45),
3A (47-55), 3B (55-65), 3C (66-72), 3D (71-80),
3E (80-89), 4 (90-98), 5 (99-112), 6 (112-121),
7 (122-131), 8 (132-138), 9 (139-148);
Texture : APHYRIC, FINE-GRAINED (1A-2 AND 3B-E AND 9),PCES 4
AND 5 ARE SLIGHTLY FINER GRAINED, VERY FINE-GRAINED
(PCES 6-8), PCES 3C-3E AND 9 ARE SUBVARIOLITIC, PCE
8 IS VARIOLITIC, RARE PLAG PHENOS ARE FOUND, ALTERED
OL PHENO FOUND, GLASS SURFACE ON PCE 8 MAY BE A
PILLOW SURFACE;
Structure : PCES 1A-3B INTENSELY CRACKED WITH YELLOW BROWN
ALTERATION AND SOME ZEOLITE COVERING (PCES 1A AND
1B) PRESENT, CRACKING IS LESS INTENSE IN PCES 3C-3E
THAN UPPER PCES IN THIS SECTION, PCES 4 AND 5 ARE
INTENSELY CRACKED, CARB VEINLETS OCCUR IN PCES 4 AND
5, DRUSES WITH CARB AND ZEOLITES ARE PRESENT IN PCE
9;
Alteration : MOD
GLASS ON PCE 8 IS ALTERED WITH ENCRUSTATIONS OF
WHITE AND GREY AND RED MATERIALS;
Comments : COOLING UNIT BOUNDARY PLACED ABOVE PCE 8;
Vesicles : VESICLES ARE FOUND IN PCES 3A-3E , IRREGULAR AND
FILLED WITH DARK GREEN MATERIAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 8
RARE PLAG PHENOS ARE FOUND IN PCES 1A-1C (3MM
MAX) AND 2-3B AND 3C-3E (3MM MAX) AND 4-6;
OLIVINE
Size(mm): 1
AN ALTERED OL PHENO IS FOUND IN PCE 2;
Replacement: CARBONATE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 210/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 562.05
Core: 56 Top of Core Depth (m) : 560.55
Sect: 1 Top of Section Depth(m): 560.76
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (21-29), 2 (30-35), 3 (36-48), 4 (50-59),
5 (60-66), 6 (67-73), 7 (74-80), 8 (81-89),
9 (90-100), 10 (102-111), 11 (112-124),
12 (125-140), 13 (141-148);
Texture : APHYRIC;
Structure : VERY FRACTURED;
Alteration : ALTERATION IS MORE INTENSE IN AREAS ADJACENT TO
GLASS POSSIBLE REFLECTING DIFFERENCES IN POROSITY;
Comments : CONJUGATE CRACKS ARE WELL DEVELOPED SUGGESTING
COMPRESSIONAL FAILURE OF THESE ROCKS;
Vesicles : Size(mm): Percent: 5
VESICULAR, MOST FILLED WITH PALE GREEN MATERIAL,
SOME FILLED WITH BROWN MATERIAL;
Replacement: CLAY MINERALS
CARBONATE
CHLORITE
ZEOLITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 563.55
Core: 56 Top of Core Depth (m) : 560.55
Sect: 2 Top of Section Depth(m): 562.05
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (3-15), 1B (3-15), 1C (3-15), 2 (17-24),
3 (25-29), 4A (31-42), 4B (42-46), 4C (46-61),
4D (46-61), 4E (60-71), 4F (71-83), 4G (83-97),
4H (83-97), 4I (97-107), 4J (106-116), 4K (116-133),
4L (116-133), 4M (132-136), 4N (135-140),
4O (139-143), 4P (143-146), 4Q (145-148);
Texture : APHYRIC, RARE PLAG AND OL PHENOS;
Structure : VERY HIGHLY FRACTURED BUT FRAGMENTS NOT AS FRIABLE
AS 56-1;
Alteration : FRESH
PCES 4E-4I, PCES AROUND 4F ARE FRESHEST;
MOD
PCES 1A-4D AND 4J-4Q;
BROKEN FACES COATED BY LIGHT GREEN SOFT MATERIAL
Comments : (CHLORITE OR SAPONITE(?));
Vesicles : Size(mm): Percent: 5
VESICULAR, FILLED BY VARIOUS MATERIAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
OLIVINE ( RARE%)
Replacement: CHLORITE
SAPONITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 565.05
Core: 56 Top of Core Depth (m) : 560.55
Sect: 3 Top of Section Depth(m): 563.55
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, FINE-GRAINED, RARE PLAG PHENOS, GLASS RINDS
FOUND IN INTERVALS 65-73 AND 82-85 AND 95-98 AND
122-132;
Structure : CRACKS CUT MANY PCES FILLED WITH WHITE MATERIAL
(ZEOLITES);
Alteration : MOD;
Comments : SECTION REPRESENTS 5 OR 6 COOLING UNITS;
Phenocrysts: PLAGIOCLASE ( RARE%)
Replacement: ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 565.05
Core: 56 Top of Core Depth (m) : 560.55
Sect: 3 Top of Section Depth(m): 563.55
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE B (5-7), C (7-12);
Texture : BRECCIA, HYALOCLASTIC;
Structure : ZEOLITES(?) IN CRACKS;
Alteration : MOD;
Comments : GNDMASS BROWN PINK YELLOW MATRIX;
Replacement: ZEOLITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 1100/1500 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 566.55
Core: 56 Top of Core Depth (m) : 560.55
Sect: CC Top of Section Depth(m): 566.15
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (111-117), 2 (119-124), 3 (125-139),
4 (140-148);
Texture : APHYRIC, PCES 1 AND 4 HAVE GLASSY RINDS;
Structure : VEINS CUT SAMPLES ESPECIALLY IN PCE 4 VEINS ARE
FILLED WITH CALCITE AND ZEOLITES(?);
Alteration : MOD;
Comments : PCE 3 IS COMPOSED OF APPROXIMATELY 1CM FRAGMENTS;
Replacement: ZEOLITE
ID UNCERTAIN;
CALCITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 571.58
Core: 57 Top of Core Depth (m) : 570.08
Sect: 1 Top of Section Depth(m): 570.08
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-8), 2A (9-12), 2B (9-12), 2C (12-14),
3 (15-19), 4 (20-27), 5 (28-32), 6 (33-37),
7 (38-42), 8 (43-45), 9 (46-52), 10 (53-64),
11 (65-73), 12 (74-78), 13 (79-87), 14 (89-97),
15 (98-102), 16A (103-117), 16B (117-128),
18 (143-149);
Texture : APHYRIC, GLASSY RINDS ARE FOUND ON PCES 2+5+6+9+11+
18, VARIOLES ARE FOUND ON PCES 5-9+11+18;
Structure : CRACKS CUT MANY PCES ESPECIALLY 10-11+13+15-16A,
CRACKS FILLED WITH WHITE MATERIAL (ZEOLITE?);
Alteration : FRESH
PCES 1-5+7-8+12-15, PCES 6+11+18 FRESH IN PART
WITH MOD ALTERATION ON THE EDGES;
MOD
PCES 10+16A-16B AND EDGES OF PCES 6+11+18;
Comments : PCE 4 SHOWS A VERTICAL JUNCTION BETWEEN BASALT
AND BASALTIC GLASS BRECCIA;
Replacement: ZEOLITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 200/1430 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 571.51
Core: 57 Top of Core Depth (m) : 570.08
Sect: 1 Top of Section Depth(m): 570.28
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 4 (20-27), 17A (130-137), 17B (136-143),
17C (136-143);
Texture : PCES 17A-17C ARE GLASS SET IN A CLAY MATRIX;
Alteration : FRESH
PCES 4+17B+17C AND MOST OF 17A;
MOD
PART OF PCE 17A;
Comments : PCE 4 SHOWS A VERTICAL JUNCTION BETWEEN BASALT AND
BASALTIC BRECCIA;
Replacement: CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 460/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 580.97
Core: 58 Top of Core Depth (m) : 579.47
Sect: 1 Top of Section Depth(m): 579.93
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (46-55), 1B (54-62), 2A (64-74), 2B (72-79),
3 (81-94), 4 (95-105), 5 (107-116), 6 (117-128),
7 (129-140), 8 (142-150);
Texture : APHYRIC, VARIOLITES ARE FOUND ON PCES 3+5-6, GLASSY
ZONES ON 3+5-6, NO PHENOS PRESENT;
Structure : PCES ARE EXTENSIVELY CUT BY VEINS FILLED WITH WHITE
MATERIAL (ZEOLITES)-VEINS ARE THIN 0.5MM;
Alteration : MOD;
Comments : PCES 4 AND 5 BROKE UP ALONG VEINS WHILE BEING CUT;
Replacement: ZEOLITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 582.47
Core: 58 Top of Core Depth (m) : 579.47
Sect: 2 Top of Section Depth(m): 580.97
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-13), 2 (15-24), 3 (25-37), 4 (39-49),
5 (50-55), 8 (128-140), 9 (141-145), 10 (147-150);
Texture : APHYRIC, VERY FINE-GRAINED, RARE PLAG PHENOS ARE
PRESENT;
Structure : ROCKS CUT PCES 3 AND 4;
Alteration : FRESH;
Comments : PCE 8 IS ONE 5CM PCE PLUS FRAGMENTS;
Vesicles : VUGS ARE FOUND IN PCE 4 FILLED WITH PALE YELLOW
AND WHITE MATERIAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 582.47
Core: 58 Top of Core Depth (m) : 579.47
Sect: 2 Top of Section Depth(m): 580.97
LITHOLOGY: HYALOCLASTITE;
Piece No. : PCE 6A (56-63), 6B (62-71), 6C (70-79), 6D (78-85),
6E (85-91), 6F (91-96), 6G (96-102), 6H (102-111),
6I (111-120), 7 (122-127);
Texture : BASALTIC GLASS IN A MATRIX OF ALTERED GLASS
FRAGMENTS (FRAGMENTS UP TO 4CM ACROSS AND ROUNDED
ANGULAR FRAGMENTS ARE ALSO FOUND), PCE 7 GRADES FROM
FINE FRAGMENTS TO LARGER FRAGMENTS CONTACTING A
MASSIVE VERY FINE-GRAINED BASALT;
Structure : MASSIVE BASALT PRESENT;
Alteration : EXT
PCE 7 HAS ZEOLITES(?) COATING THE APHYRIC BASALT
HALF;
Replacement: ZEOLITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 70/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 590.49
Core: 59 Top of Core Depth (m) : 588.99
Sect: 1 Top of Section Depth(m): 589.06
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (7-12), 2 (12-17), 3 (18-29), 4 (30-37),
7 (49-54), 9 (63-71), 10 (72-75), 12 (84-89),
14 (98-102), 17 (131-139);
Texture : APHYRIC, VARIOLES ARE 1-2MM (MAX) DIAMETER, RARE OL
PHENOS ARE PRESENT IN PCE 7, PCE 1 PARTLY BASALTIC
BRECCIA;
Structure : CRACKS ARE ABUNDANT ESPECIALLY NOTED IN PCES 3+7+17-
18, CRACKS ARE FILLED WITH PALE GREEN MATERIAL IN
PCE 3-CARB IN PCE 7;
Alteration : MOD;
EXT
PCES 17+18;
Comments : PCES 10 AND 14 TOO SMALL TO DESCRIBE;
Phenocrysts: OLIVINE ( RARE%)
RARE OL PHENOS FOUND;
Replacement: CARBONATE
CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 70/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 590.49
Core: 59 Top of Core Depth (m) : 588.99
Sect: 1 Top of Section Depth(m): 589.06
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 5 (37-42), 6 (42-48), 8 (55-63), 9 (63-71),
11 (76-83), 13 (90-98), 15 (103-112), 16 (113-130);
Texture : CLASTS ARE MOSTLY BASALTIC GLASS IN PCE 1+5+6, PCE 1
HAS RARE PLAG CLASTS, PCES 5 AND 6 HAVE GLASSY
APHYRIC CLASTS, PCES 8+11+13+15+16 HAVE VARIOLITES-
PCES 8 AND 15 ARE MORE VARIOLITIC THAN 11 AND 16,
PCE 16 ALSO CONTAINS A SMALL PLAG PHENO;
Alteration : MOD;
EXT
PCE 16;
FRESH
GLASS FRAGMENTS MOSTLY FRESH;
Groundmass : GNDMASS IS GREENISH CLAY AND RARE CARB;
Phenocrysts: PLAGIOCLASE
ONE SMALL PHENO;
Replacement: CLAY MINERALS
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 591.99
Core: 59 Top of Core Depth (m) : 588.99
Sect: 2 Top of Section Depth(m): 590.49
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-6), 2 (7-15), 3 (16-22), 4 (23-31),
5 (32-40), 6 (41-50), 7 (51-57), 8 (58-70),
9 (70-80), 10 (80-85), 11 (85-90), 12 (90-93),
13 (94-102), 14 (102-108), 15 (109-116),
16 (117-120), 17 (120-132), 18 (132-140),
19 (140-148);
Texture : APHYRIC, FINE-GRAINED IN PCES 1-3 AND 6-10 AND 11-
19, PCE 4 IS VERY FINE-GRAINED, A GLASS RIND IS
FOUND ON PCE 3, PCE 11 CONTAINS A GLASSY FRAGMENT,
RARE ROUNDED PLAG AND OL PHENOS ARE FOUND IN PCES
6-10, PCES 12-19 CONTAIN RARE ROUNDED PLAG PHENOS;
Structure : CRACKS ARE FOUND IN PCES 1-5 AND ARE PARTLY FILLED
WITH GREENISH WHITE CLAYS, IN PCES 18 AND 19 A
CRACK PLANE IS COATED WITH A PALE GREEN MINERAL
(CHLORITE?) AND A BROWNISH YELLOW MINERAL, VEINLETS
OF GREENISH WHITE CLAYS ARE NOTED ON PCE 3;
Alteration : MOD;
EXT
PCE 3;
Comments : COOLING UNIT BOUNDARIES ARE PLACED ABOVE PCE 3 AND
11;
Vesicles : VESICLES IN PCES 6-10 FILLED WITH DARK GREEN
SECONDARY MINERALS;
Phenocrysts: PLAGIOCLASE ( RARE%)
OLIVINE ( RARE%)
RARE ROUNDED PLAG AND OL PHENOS ARE FOUND IN
PCES 6-10, PCES 12-19 CONTAIN RARE ROUNDED PLAG
PHENOS;
Replacement: CLAY MINERALS
CHLORITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 80/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 600.03
Core: 60 Top of Core Depth (m) : 598.53
Sect: 1 Top of Section Depth(m): 598.61
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (8-21), 2 (22-32), 3 (33-44), 4 (45-50),
5 (51-57), 6 (57-65), 7 (67-71), 8 (73-77),
9 (78-91), 10 (92-98), 11 (99-111), 12 (112-121),
13 (123-125), 14 (137-148);
Texture : APHYRIC, PCES 12 AND 13 ARE SUBVARIOLITIC, PCES
3-4+7+9+11 ARE VARIOLITIC IN PART, GLASSY EDGES ARE
FOUND ON PCES 3+7+11+13, PCE 12 IS FRAGMENTS OF
ALTERED BASALTIC GLASS, RARE PLAG PHENOS ARE FOUND,
PCE 4 IS PARTLY COMPOSED OF BRECCIA;
Structure : PCES 1 AND 2 CONTAIN CRACKS WITH YELLOW BROWN
ALTERATION ALONG THEM, CRACKS IN PCES 4+11 CONTAIN
SOFT PALE GREEN MATERIAL, CRACKS IN PCE 8 LINED WITH
PALAG AND CLAY;
Alteration : MOD
PCES 1-3;
EXT
PCES 7-14;
Comments : VARIOLITES PRESENT ADJACENT TO GLASS IN MANY CASES;
Vesicles : Size(mm): Percent: <1
IN PCES 1-3 AND 9-10 AND 12-14 EXCEPT PCE 13, IN
PCE 1 VESICLES FILLED WITH PALE GREEN MATERIAL,
VESICLES IN PCES 2 AND 10 HAVE DARK GREEN
FILLINGS, PCE 14 HAS BOTH DARK AND PALE GREEN
FILLINGS;
Size(mm): Percent: 2
IN PCE 13, HAS BOTH DARK AND PALE GREEN FILLINGS;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 3
IN PCE 2 SIZE IS 1.5MM, IN PCES 9 AND 13 SIZE IS
3MM MAX, IN PCES 3 AND 14 SIZE IS NOT KNOWN;
Replacement: CLAY MINERALS
PALAGONITE
Leg : 45 Top/Bottom Interval(mm): 80/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 600.03
Core: 60 Top of Core Depth (m) : 598.53
Sect: 1 Top of Section Depth(m): 598.61
LITHOLOGY: HYALOCLASTITE;
Piece No. : PCE 4 (45-50), 5 (50-56), 6 (57-65);
Texture : CLASTS ARE APHYRIC BASALT AND PARTIALLY
PALAGONITIZED VOLCANIC GLASS, PCE 6 CONTAINS 5MM
FRAGMENTS OF APHYRIC VARIOLITIC BASALT AND PARTIALLY
PALAGONITIZED VOLCANIC GLASS, PCE 4 IS PARTLY
COMPOSED OF APHYRIC BASALT;
Alteration : EXT;
Groundmass : GNDMASS MATRIX IS CLAY AND ZEOLITES(?) FROM
VOLCANIC GLASS;
Replacement: CLAY
ZEOLITE
ID UNCERTAIN FOR ZEOLITE;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 601.53
Core: 60 Top of Core Depth (m) : 598.53
Sect: 2 Top of Section Depth(m): 600.03
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-8), 2 (10-17), 3 (19-25), 4 (26-33),
5 (35-46), 6 (46-56), 7 (57-67), 8 (69-76),
9A (77-82), 9B (80-85), 9C (82-86), 10 (87-94),
11 (95-104), 12 (105-112), 13 (113-122),
14 (123-130), 15 (131-139), 16 (140-147);
Texture : APHYRIC, VERY FINE-GRAINED TO GLASSY IN PCES 1-5,
GRAIN SIZE INCREASES FROM 6-10 AND THEN DECREASES
FROM 12-15, PCES 2 AND 3 HAVE GLASSY EDGES ALTERED
TO PALAG, VARIOLITES ARE FOUND ON PCES 3 AND 14,
PCE 14 IS GLASSY IN PART;
Structure : CRACKS IN PCES 1-2+4-7+13-16 CONTAIN ZEOLITES AND
SOFT PALE GREEN CLAYS;
Alteration : FRESH
PART OF PCE 3;
MOD
PCES 1-2+4+10 AND PART OF PCE 3;
EXT
PCES 5-9C AND 11-16;
Comments : SOFT PALE GREEN CLAYS FROM THE CRACK FILLINGS OF
PCES 6+11+16 STORED IN GLASS BOTTLES;
Vesicles : Size(mm): Percent: <1
VESICLES FILLED WITH PALE GREEN AND DARK GREEN
MATERIAL IN PCES 1-2+4-9C+13-16;
Size(mm): Percent: 1
PCES 10-12 CONTAIN 1% VESICLES WITH PALE GREEN
FILLINGS;
Replacement: ZEOLITE
CLAY
Leg : 45 Top/Bottom Interval(mm): 40/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 603.03
Core: 60 Top of Core Depth (m) : 598.53
Sect: 3 Top of Section Depth(m): 601.57
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (4-21), 2 (22-37), 3 (38-56), 4 (57-67),
5 (69-80), 6 (82-87), 7 (88-106), 8 (107-116),
9 (117-132), 10 (133-143), 11 (144-148);
Texture : APHYRIC, VARIOLITIC IN PCES 1 AND 10, GLASS IS
FOUND ON PCES 1+6+8-9, RARE PLAG PHENOS IN PCES
1-5+7-9+11;
Structure : GREENISH WHITE VEINS ARE FOUND IN PCE 9, VERY PALE
GREENISH WHITE CRACK FILLING IS FOUND ON PCES 1 AND
9, PCES 2-5+7 CONTAIN CRACKS WITH GREENISH WHITE
AND/OR VERY PALE YELLOW BROWN MINERALS, PCE 6+8+10
HAVE CRACKS FILLED WITH GREENISH WHITE MINERALS;
Alteration : MOD;
Comments : PCES 1+3+5+7+9+11 CONTAIN NUMEROUS FRAGMENTS;
Vesicles : Size(mm): Percent: 1
IN PCES 2-5+7, WITH DARK GREEN AND/OR GREENISH
WHITE MINERALS IN PCES 2-5+7;
Size(mm): Percent: <1
PCES 6 AND 8, WITH DARK GREEN TO GRAY GREEN AND/OR
GREENISH GRAY MINERALS;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 7
RARE PLAG PHENOS IN PCES 1-5+7-9+11, PHENO IN PCE
8 IS 7MM ACROSS;
Replacement: CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 1100/1170 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 609.07
Core: 61 Top of Core Depth (m) : 607.90
Sect: 1 Top of Section Depth(m): 609.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (110-117);
Texture : APHYRIC, VARIOLITIC;
Structure : CRACK PLAINS ARE COVERED WITH ZEOLITES(?) (PALE
GREEN) AND CLAYS;
Alteration : MOD;
Comments : THIS PCE MAY HAVE BEEN CORED AT THE BOTTOM OF CORE
60 BUT NOT TRAPPED IN THE CORE CATCHER WHEN THAT
CORE WAS PULLED;
Vesicles : VESICLES FILLED WITH PALE GREEN AND DARK GREEN
MATERIAL;
Replacement: ZEOLITE
CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 1180/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 609.40
Core: 61 Top of Core Depth (m) : 607.90
Sect: 1 Top of Section Depth(m): 609.08
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 2 (118-150);
Texture : DOLERITIC, PORPHYRITIC;
Structure : INTENSIVELY CRACKED, CRACKS ARE COATED WITH BROWN
GREEN AND COLORED FIBROUS MATERIAL;
Alteration : MOD;
Phenocrysts: PLAGIOCLASE (15-20%)
GRAIN SIZE DECREASES SLIGHTLY THROUGH THIS
SECTION;
OLIVINE ( 7%)
CLINOPYROXENE ( <1%)
SOME PLAG MACROPHENOS ARE SURROUNDED BY BROWN
ALTERED OL AND ALSO SOME FRESH OL;
Replacement: CLAY MINERALS
ID UNCERTAIN;
ZEOLITE
ID UNCERTAIN;
Leg : 45 Top/Bottom Interval(mm): 700/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 610.90
Core: 61 Top of Core Depth (m) : 607.90
Sect: 2 Top of Section Depth(m): 610.10
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 1 (7-20), 2 (20-37), 3 (38-56), 4 (53-72),
5 (72-86), 6 (85-97), 7 (97-107), 8 (105-117),
9 (117-144), 10 (139-150);
Texture : PLAG-OL-CPX DOLERITIC, PORPHYRITIC,
NO SYSTEMATIC CHANGE IN GRAIN SIZE OR MODAL
COMPOSITION WAS FOUND;
Structure : CRACKS ARE COATED BY CHLORITE(?) AND ZEOLITES(?)
(RADIAL FIBROUS AGGREGATES);
Alteration : MOD
PCE 7 AND PART OF PCES 2-6 AND 8-10;
EXT
PCE 1 AND PART OF 2-6+8-10;
Vesicles : Size(mm): Percent: <1
VESICLES FILLED WITH GREENISH GRAY MATERIAL;
Phenocrysts: PLAGIOCLASE (15-20%)
Size(mm): TO 15
OLIVINE ( 5-6%)
OL IS PARTLY HIGHLY ALTERED;
CLINOPYROXENE ( <1%)
Replacement: ZEOLITE
CHLORITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 612.40
Core: 61 Top of Core Depth (m) : 607.90
Sect: 3 Top of Section Depth(m): 610.90
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 1 (2-17), 2 (15-32), 3 (34-47), 4 (47-59),
5 (59-69), 6 (69-84), 7 (84-98), 8 (101-115),
9 (116-130), 10 (130-136), 11 (136-150);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC;
Structure : ABUNDANTLY CRACKED, FRACTURES TEND TO MAKE AN ANGLE
OF 30 DEGREES TO THE VERTICAL, CRACKS MORE ABUNDANT
THAN IN 61-2 - THE ABUNDANCE OF CRACKS MAY BE CAUSED
BY ALTERATION, CRACKS FILLED WITH CARB;
Alteration : MOD
ROCK SURFACES HAVE A GREENISH TINGE;
Vesicles : Size(mm): 0.5 Percent: <1
VESICULAR;
Phenocrysts: PLAGIOCLASE ( 20%)
Size(mm): TO 6
OLIVINE ( 10%)
Size(mm): TO 3
CLINOPYROXENE ( 1%)
Size(mm): TO 3
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/ 680 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 613.08
Core: 61 Top of Core Depth (m) : 607.90
Sect: CC Top of Section Depth(m): 612.50
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 1 (2-10), 2 (10-23), 3 (24-30), 4 (31-48),
5 (49-59), 6 (61-68);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC;
Structure : CRACK PLANES ARE CHLORITE COATED WITH GREENISH CLAY
AND BROWN MINERALS;
Alteration : MOD
PCES 2-5;
EXT
PCE 1;
Vesicles : Size(mm): Percent: 2
Location: Filling: CLAY
VESICLES FILLED WITH GREENISH WHITE CLAY AND BROWN
MINERALS;
Groundmass : CLINOPYROXENE
PLAGIOCLASE
CPX AND PLAG SEEM TO FORM AN OPHITIC TEXTURE;
Phenocrysts: PLAGIOCLASE (15-20%)
Size(mm): 2-8
OLIVINE ( 5-7%)
Size(mm): 2-5
CLINOPYROXENE ( <1%)
Size(mm): 2
Replacement: CLAY MINERALS
CHLORITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 618.92
Core: 62 Top of Core Depth (m) : 617.42
Sect: 1 Top of Section Depth(m): 617.42
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 1 (2-6), 2 (7-14), 7A (69-79), 7B (78-88),
8 (90-101), 9 (102-113), 10 (114-122), 11 (123-130),
12 (132-137), 13 (138-143), 14 (144-150);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, PCES 9-14 COARSER
GRAINED CLOSER TO DOLERITE;
Alteration : MOD;
Phenocrysts: PLAGIOCLASE
OLIVINE
CLINOPYROXENE
Leg : 45 Top/Bottom Interval(mm): 150/ 230 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 617.65
Core: 62 Top of Core Depth (m) : 617.42
Sect: 1 Top of Section Depth(m): 617.57
LITHOLOGY: HYALOCLASTITE;
Piece No. : PCE 3 (15-23);
Texture : CLASTS ARE BASALTIC GLASS,SIMILAR TO THOSE DESCRIBED
IN 49-1 AND 58-2;
Alteration : MOD;
Comments : PCE 3 IS COMPOSED OF A LARGE CLAST - FINE-GRAINED
APHYRIC BASALT ATTACHED TO A BASALTIC GLASS BRECCIA;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Graham, A.
Hole: 395A Sample Midpoint (m) : 618.92
Core: 62 Top of Core Depth (m) : 617.42
Sect: 1 Top of Section Depth(m): 617.42
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 4 (25-35), 5 (36-48), 6 (49-68);
Texture : APHYRIC, PCE 4 INCLUDES GLASS,SIMILAR TO THOSE
RECOVERED ABOVE DOLERITE;
Alteration : MOD;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 620.13
Core: 63 Top of Core Depth (m) : 618.63
Sect: 1 Top of Section Depth(m): 618.63
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 1 (0-7), 2 (8-17), 3A (18-30), 3B (18-30),
3C (30-40), 3D (39-47), 4A (47-54), 4B (53-58),
4C (58-65), 5A (67-75), 5B (75-78), 6 (80-83),
7 (85-91), 8 (90-97), 9 (98-102), 10 (102-107),
11A (108-117), 11B (117-123), 11C (123-131),
11D (131-133), 12A (134-141), 12B (140-150);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC;
Structure : CRACKS IN PCES 1 AND 2 COATED WITH CHLORITE(?),
CRACKS IN PCES 3-12B ARE FILLED WITH BROWN MATERIAL
AND CARB;
Alteration : FRESH
PCES 9-11B;
MOD
PCES 1-8+11A-12B;
Groundmass : PLAGIOCLASE
PLAG GRAIN SIZE INCREASES FROM 4-11B ACCOMPANIED
BY A SLIGHT DECREASE IN OL, FROM 11B-12B NO
VARIATION IN MATRIX GRAIN SIZE;
OLIVINE
Phenocrysts: PLAGIOCLASE ( 10%)
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
IN PCE 1;
PLAGIOCLASE ( 15%)
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
IN PCES 2-4;
PLAGIOCLASE (15-20%)
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
PCES 5-9;
PLAGIOCLASE ( 20%)
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
PCES 10-11B;
PLAGIOCLASE (15-20%)
OLIVINE ( 5%)
CLINOPYROXENE ( <1%)
IN PCES 11C-12;
MODAL PHENO ABUNDANCES VARY;
Replacement: CARBONATE
CHLORITE
MONTMORILLONITE
Leg : 45 Top/Bottom Interval(mm): 0/1430 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 621.56
Core: 63 Top of Core Depth (m) : 618.63
Sect: 2 Top of Section Depth(m): 620.13
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 1A (2-14), 1B (14-21), 1C (17-45), 1D (45-59),
1E (57-65), 1F (64-78), 1G (78-86), 1H (86-104),
1I (104-126), 1J (125-142);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, NO SYSTEMATIC
CHANGE IN GRAIN SIZE AND MODAL COMPOSITION OBSERVED;
Structure : CRACKS ARE COATED WITH CHLORITE(?) AND MONT(?) AND
CARB;
Alteration : MOD;
EXT
PART OF PCE 1I;
Vesicles : Size(mm): Percent: 1
Location: 1-2 Filling: CLAY
VESICLES FILLED WITH GREENISH GRAY CLAY;
Groundmass : GNDMASS IS SUBOPHITIC;
Phenocrysts: PLAGIOCLASE (15-20%)
Size(mm): 1-15
OLIVINE ( 5-7%)
Size(mm): 1-5
CLINOPYROXENE ( 1%)
Size(mm): 0.5-10
Replacement: MONTMORILLONITE
ID UNCERTAIN;
CHLORITE
CARBONATE
CLAY MINERALS
Minerals Replaced: OL
OL ALMOST COMPLETELY ALTERED TO WHITE CLAY (MONT?)
AND BROWN MINERAL;
Leg : 45 Top/Bottom Interval(mm): 30/1420 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 623.05
Core: 63 Top of Core Depth (m) : 618.63
Sect: 3 Top of Section Depth(m): 621.66
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 1A (3-29), 1B (20-40), 1C (30-40), 1D (40-61),
1E (61-76), 1F (76-85), 1G (85-100), 1H (90-102),
1I (102-105), 1J (105-113), 1K (113-142);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, AUTO OR
PROTOCLASTIC BRECCIA FOUND IN 70-104CM COMPOSED
OF CRUSHED DOLERITE AND DOLERITE CLASTS;
Structure : SHEAR PLANES 30 DEGREES TO VERTICAL, SOME SHEAR
PLANES ARE COATED WITH SLICKENSIDED SECONDARY
MINERALS, SHEAR PLANES ARE YOUNGER THAN THE
PROTOCLASTIC BRECCIA (SHEAR PLANES CROSS BRECCIATED
ZONES);
Alteration : MOD
GNDMASS MATRIX OF PROTOCLASTIC BRECCIA IS ALTERED
TO CLAYS AND CHLORITE(?);
Phenocrysts: PLAGIOCLASE
OLIVINE
CLINOPYROXENE
Replacement: CLAY
CHLORITE
MONTMORILLONITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 624.63
Core: 63 Top of Core Depth (m) : 618.63
Sect: 4 Top of Section Depth(m): 623.13
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 1 (0-18), 1B (12-30), 1C (29-55), 1E (75-85),
1F (85-93), 1G (93-105), 1H (100-122), 1I (122-150);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, GNDMASS IS OPHITIC;
Structure : CRACK PLANES ARE COATED WITH CHLORITE AND GREENISH
WHITE CLAY MINERALS-OTHERS HAVE SPHERICAL CARB
PARTLY COVERED WITH GRAY FINE-GRAINED MINERALS
(ESPECIALLY 1E);
Alteration : MOD;
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): 2-10
OLIVINE ( 7%)
Size(mm): 2-7
CLINOPYROXENE ( 1%)
Size(mm): 1-5
Replacement: CLAY MINERALS
Minerals Replaced: OL
MOST OL PHENOS ARE ALTERED TO BROWN MINERALS AND
GREENISH WHITE CLAY;
CHLORITE
Leg : 45 Top/Bottom Interval(mm): 790/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 626.13
Core: 63 Top of Core Depth (m) : 618.63
Sect: CC Top of Section Depth(m): 625.42
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 1 (81-94), 2 (96-101), 3 (102-107),
4A (108-120), 4B (120-126), 5 (128-133),
6 (134-141), 7 (142-148);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC;
Structure : CRACK SURFACES ARE COATED WITH CHLORITE (GREEN TO
BROWNISH GREEN) AND CARB AND GREENISH WHITE
MINERALS;
Alteration : MOD;
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): 2-7
OLIVINE ( 7%)
Size(mm): 1-5
CLINOPYROXENE ( <1%)
Size(mm): 1-2
Replacement: CARBONATE
CHLORITE
CLAY MINERALS
Minerals Replaced: OL
OL IS MOSTLY ALTERED TO GREENISH WHITE CLAY AND
BROWN MINERALS;
Leg : 45 Top/Bottom Interval(mm): 330/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 627.63
Core: 64 Top of Core Depth (m) : 626.13
Sect: 1 Top of Section Depth(m): 626.46
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE 1A (34-45), 1B (45-55), 1C (55-57), 1D (57-77),
1E (73-79), 1F (79-95), 1G (91-99), 1H (98-110),
1I (110-123), 1J (124-150);
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, NO VISUAL VARIATION
IN GRAIN SIZE AND MODAL COMPOSITION DETECTED FOR
PHENOS AND GNDMASS;
Structure : CRACK PLANES ARE COATED WITH CHLORITE (GREEN TO
BROWNISH GREEN MINERAL) AND GREENISH WHITE CLAYS
AND CARB;
Alteration : MOD;
FRESH
PARTS OF PCES 1F+1J;
SOME OL PHENOS ARE ALTERED TO BROWN MINERALS BUT
ARE GENERALLY FRESH;
Phenocrysts: PLAGIOCLASE (15-20%)
Size(mm): 2-10
OLIVINE ( 5-7%)
Size(mm): 2-6
CLINOPYROXENE ( RARE%)
Size(mm): TO 5
NO SYSTEMATIC VARIATION IN PHENO SIZE AND MODAL
COMPOSITION DETECTED VISUALLY;
Replacement: CLAY MINERALS
CHLORITE
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/1330 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 628.96
Core: 64 Top of Core Depth (m) : 626.13
Sect: 2 Top of Section Depth(m): 627.63
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC, CHILLED MARGIN FROM
129-133CM, BASALTIC GLASS ZONE WITH GLASS FRAGMENTS
AT 133CM;
Structure : CRACKS PRESENT;
Alteration : MOD
ALTERATION ALONG CRACKS, OL SHOWS SOME ALTERATION;
Comments : BASALTIC GLASS FRAGMENTS WHICH OCCUR AT 133CM ARE OF
UNCERTAIN ORIGIN IT IS NOT CLEAR IF THEY ARE FROM
THE DOLERITE OR FROM THE APHYRIC BASALT FOUND BELOW
THE DOLERITE;
Phenocrysts: PLAGIOCLASE ( 15%)
OLIVINE ( 5%)
CLINOPYROXENE ( 1%)
Leg : 45 Top/Bottom Interval(mm): 1330/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 629.13
Core: 64 Top of Core Depth (m) : 626.13
Sect: 2 Top of Section Depth(m): 628.96
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, 1 LARGE 2CM PLAG PHENO FOUND AT 1CM ABOVE
THE BOTTOM OF THE SECTION, BASALTIC GLASS FRAGMENTS
AT 133CM;
Alteration : MOD
IRON HYDROXIDE ALTERATION IS PRESENT;
Comments : IT IS UNCERTAIN IF THE BASALTIC GLASS AT 133CM IS
PART OF THE APHYRIC BASALT OR THE DOLERITE;
Phenocrysts: PLAGIOCLASE
Size(mm): 20
ONE 2CM PHENO FOUND;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 630.63
Core: 64 Top of Core Depth (m) : 626.13
Sect: 3 Top of Section Depth(m): 629.13
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, VARIOLITES FOUND AT 20-23CM AND 30-33CM AND
83-85CM AND 135-146CM, GLASS OCCURS AT 25-30CM AND
99CM AND 107-108CM AND 142CM, GLASSY RINDS ARE
PRESENT AT 82CM AND 99CM, RARE ROUNDED PLAG PHENOS
ARE PRESENT, GNDMASS IS NEAR GLASSY IN 20-23CM,
25-30CM BRECCIATED NEAR GLASSY APHYRIC BASALT
CEMENTED WITH GREENISH WHITE CLAY.MIN AND VERY RARE
CARB BRECCIA IS ALSO FOUND AT 107-108CM AND IS
SURROUNDED BY GLASS;
Structure : A REDDISH BROWN VEIN CUTS THE BRECCIA ZONE AT 25-
30CM, 50-58CM PARTLY FRAGMENTED AND CEMENTED BY
GREENISH WHITE AND BROWN MINERALS, CRACK PLANES ARE
COATED BY MANY SECONDARY MINERALS;
Alteration : MOD;
Comments : COOLING UNIT BOUNDARIES WERE PLACED AT 22-30CM AND
81-82CM AND 107-109CM AND 142CM;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 7
RARE ROUNDED PLAG PHENOS 7MM MAX ARE PRESENT;
Replacement: CLAY
GREENISH WHITE CLAY;
CARBONATE
Leg : 45 Top/Bottom Interval(mm): 20/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 632.13
Core: 64 Top of Core Depth (m) : 626.13
Sect: 4 Top of Section Depth(m): 630.65
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, RARE ROUNDED PLAG PHENOS, GLASSY ZONE AT
50CM;
Structure : CRACKS FILLED WITH SOFT PALE GREEN MATERIAL, IN
58-75CM DARK GREEN MATERIAL ALSO PRESENT IN CRACKS;
Alteration : EXT;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 10
RARE ROUNDED PLAG PHENOS 1CM MAX ARE PRESENT;
Leg : 45 Top/Bottom Interval(mm): 30/ 550 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 632.68
Core: 64 Top of Core Depth (m) : 626.13
Sect: CC Top of Section Depth(m): 632.16
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (3-14), 2 (16-22), 3 (23-35), 4 (36-45),
5 (46-55);
Texture : APHYRIC, RARE PLAG PHENOS OCCUR, FINE-GRAINED;
Structure : CRACKS IN PCE 1 COATED WITH ZEOLITES, CRACKS IN PCE
2 CHLORITE COATED, IN PCES 3-5 CRACKS CHLORITE AND
ZEOLITE COATED;
Alteration : EXT;
Vesicles : VESICULAR;
Phenocrysts: PLAGIOCLASE ( RARE%)
RARE PLAG PHENOS OCCUR;
Replacement: CHLORITE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 570/ 590 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 636.23
Core: 65 Top of Core Depth (m) : 635.64
Sect: 1 Top of Section Depth(m): 636.21
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : PLAG-OL-CPX PHYRIC, PORPHYRITIC;
Alteration : EXT;
Comments : PCE PROBABLY DROPPED DOWN INTO THE LINER FROM 61-1
TO 64-2;
Vesicles : VESICLES RARE, FILLED WITH WHITE AND GREEN
MATERIAL;
Phenocrysts: PLAGIOCLASE ( 20%)
OLIVINE (10-15%)
CLINOPYROXENE ( 1%)
Size(mm): TO 4
Leg : 45 Top/Bottom Interval(mm): 600/1500 Analyst: Prosser, E.
Hole: 395A Sample Midpoint (m) : 637.14
Core: 65 Top of Core Depth (m) : 635.64
Sect: 1 Top of Section Depth(m): 636.24
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, INTERVAL 61-65CM FINE-GRAINED, 67-150CM
VERY FINE-GRAINED, VARIOLITIC ZONES AT 70-72CM AND
101-105CM, GLASSY RINDS AT 70-72CM+101-105CM;
Structure : CRACKS ARE COATED WITH CLAYS+CHLORITE+ZEOLITE;
Alteration : EXT;
Vesicles : VESICLES IN 61-65CM ARE FILLED WITH WHITE AND
GREEN MATERIAL, IN 67-150CM VESICLES ARE FILLED
WITH DARK GREEN TO BROWN MATERIAL;
Replacement: CLAY MINERALS
CHLORITE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 638.64
Core: 65 Top of Core Depth (m) : 635.64
Sect: 2 Top of Section Depth(m): 637.14
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, GLASSY ZONES WITH ADJACENT VARIOLITES
OCCUR 61-64CM AND 139-145CM, RARE PLAG AND OL
PHENOS ARE PRESENT, BRECCIA OF BASALTIC GLASS AND
APHYRIC BASALT FROM 60-74CM;
Structure : CRACKS ARE FILLED WITH A WHITE MINERAL ZEOLITES(?);
Alteration : EXT;
Vesicles : Size(mm): 0.5 Percent: 1
Location: Filling: CLAY
VESICLES ARE FILLED WITH A GREENISH GRAY CLAY
MINERAL;
Phenocrysts: PLAGIOCLASE ( RARE%)
OLIVINE ( RARE%)
Replacement: CLAY MINERALS
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 1300/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 640.14
Core: 65 Top of Core Depth (m) : 635.64
Sect: CC Top of Section Depth(m): 639.94
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, RARE PHENOS OF PLAG AND MICROPHENOS OF CPX;
Structure : CRACKS ARE FILLED GREENISH WITH GREENISH WHITE CLAY,
CRACK SURFACES COATED WITH BROWNISH-GREEN MINERAL;
Alteration : EXT;
Vesicles : Size(mm): 0.5-1 Percent: 1-2
VESICLES FILLED WITH GREEN GRAY AND WHITE
MINERALS;
Phenocrysts: PLAGIOCLASE ( RARE%)
CLINOPYROXENE ( RARE%)
CPX MICROPHENOS;
Replacement: CLAY MINERALS
CHLORITE
Leg : 45 Top/Bottom Interval(mm): 320/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 646.67
Core: 66 Top of Core Depth (m) : 645.17
Sect: 1 Top of Section Depth(m): 645.49
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, GLASS AND VARIOLITES PRESENT ON 56-62CM
AND 63-67CM AND 98-112CM AND 122-126CM, RARE
PHENOS OF PLAG PRESENT;
Structure : CRACKS IN 43-50CM AND 56-60CM AND 120-130CM AND
140-146CM ARE FILLED BY ZEOLITE AND CLAY, PALAG(?)
FILLS CRACKS IN 123-126CM INTERVAL;
Alteration : EXT;
Vesicles :
Location: Filling: CLAY
VESICLES ARE FILLED WITH CLAY MINERALS;
Phenocrysts: PLAGIOCLASE ( RARE%)
Replacement: ZEOLITE
CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 320/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 646.67
Core: 66 Top of Core Depth (m) : 645.17
Sect: 1 Top of Section Depth(m): 645.49
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE NO PCE NUMBERS ASSIGNED, INTERVAL 56-124CM;
Texture : BRECCIA OCCURS AT 56-67CM AND 120-124CM, CLASTS
ARE BASALTIC GLASS CEMENTED WITH GREENISH WHITE
CLAY MINERALS;
Alteration : EXT;
Replacement: CLAY MINERALS
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 648.17
Core: 66 Top of Core Depth (m) : 645.17
Sect: 2 Top of Section Depth(m): 646.67
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, FINE-GRAINED AND VERY FINE-GRAINED, RARE
PLAG PHENOS PRESENT, BASALTIC BRECCIA OCCURS AT
72-83CM AND 115-120CM;
Structure : DRUSES ARE FOUND AT 35-38CM FILLED WITH GREENISH
WHITE CLAY MINERALS, AT 82CM A DRUSE IS FOUND
PARTLY FILLED WITH ZEOLITE (EPISTILBITE), CRACKS ARE
NUMEROUS AND COATED WITH CHLORITE;
Alteration : EXT;
Vesicles : Size(mm): 0.5-1 Percent: 5
Location: Filling: CLAY
FILLED WITH YELLOW GREEN AND GRAY AND WHITE
MINERALS (CLAY);
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): TO 5
Replacement: CLAY MINERALS
CHLORITE
ZEOLITE
MAY BE EPISTILBITE;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 648.17
Core: 66 Top of Core Depth (m) : 645.17
Sect: 2 Top of Section Depth(m): 646.67
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : NO PCE NUMBERS ASSIGNED, INTERVAL 72-120CM;
Texture : CLAST ARE APHYRIC BASALT CEMENTED BY BASALTIC
GLASS (72-83), AT 115-120CM GLASS BRECCIA IS FOUND
CEMENTED BY A GREENISH WHITE MINERAL;
Alteration : EXT;
Replacement: ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 649.67
Core: 66 Top of Core Depth (m) : 645.17
Sect: 3 Top of Section Depth(m): 648.17
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-9), 2 (10-18), 3 (19-32), 4 (34-42),
5 (43-49), 6 (50-60), 7 (61-70), 8 (72-79),
9 (81-88), 10 (90-102), 11 (104-117), 12 (119-128),
13 (130-139), 14 (140-148);
Texture : APHYRIC, PCES 1 AND 2 VERY FINE-GRAINED, PCES 3-13
FINE-GRAINED, GLASS IS PRESENT IN PCE 14;
Structure : CRACKS ARE FILLED WITH GREENISH WHITE MATERIAL IN
PCES 1 AND 2 AND 11 AND 12, CRACK SURFACES ARE
COATED WITH CHLORITE;
Alteration : EXT
SOME SPECIMENS ARE COATED ON THE WEATHERED
SURFACE WITH YELLOW-GREEN MATERIAL (POSSIBLY
ALTERED QUENCH OL) PCES 12 AND 13 ESPECIALLY;
Vesicles : Size(mm): 0.5-1 Percent: 3-5
IN PCES 1 AND 2 VESICLES FILLED WITH YELLOW GREEN
AND DARK BROWN MATERIAL;
IN PCES 3-14 VESICLES ARE PARTLY FILLED WITH
WHITE AND YELLOW GREEN MATERIAL;
Replacement: CHLORITE
Leg : 45 Top/Bottom Interval(mm): 790/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 656.20
Core: 67 Top of Core Depth (m) : 654.70
Sect: 1 Top of Section Depth(m): 655.49
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, MICROCRYSTALLINE, GLASSY BASALT AND
BASALTIC GLASS, VARIOLITE FOUND NEAR GLASSY BASALT;
Structure : EXTENSIVELY FRACTURED WITH POSSIBLE CHLORITE AND
ZEOLITE FILLINGS, BASALT IS SO HIGHLY FRACTURED
THAT IT IS EFFECTIVELY A BRECCIA, FRACTURING
POSSIBLY CAUSED BY OVERBURDEN WEIGHT;
Alteration : EXT;
Replacement: CHLORITE
ZEOLITE
Leg : 45 Top/Bottom Interval(mm): 30/1480 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 657.68
Core: 67 Top of Core Depth (m) : 654.70
Sect: 2 Top of Section Depth(m): 656.23
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, BASALTIC GLASS AND GLASSY BASALT FOUND
IN HIGHER ABUNDANCES AT 7-9CM AND 123-124CM AND
132-136CM AND 142-145CM, PLAG XENOCRYST 7MM ACROSS
FOUND AT 110CM, EFFECTIVELY A BRECCIA DUE TO
FRACTURES;
Structure : INTENSELY FRACTURED, CRACK PLANES 18-25CM ARE COATED
WITH REDDISH BROWN MINERALS AND PARTLY WITH DARK
GREEN MINERAL (CHLORITE?), CRACK PLANES 26-121CM ARE
COATED WITH CHLORITE AND BROWNISH GREEN MINERALS
WITH A SHINY LUSTER;
Alteration : EXT;
Replacement: CHLORITE
Leg : 45 Top/Bottom Interval(mm): 1070/1500 Analyst: Fujii, T.
Hole: 395A Sample Midpoint (m) : 659.20
Core: 67 Top of Core Depth (m) : 654.70
Sect: CC Top of Section Depth(m): 658.77
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : APHYRIC, VERY FINE-GRAINED FROM 106-130CM, FINE-
GRAINED 130-139CM, VERY FINE-GRAINED 139-150CM;
Structure : SECTION CONSISTS OF BASALT COBBLES, CRACK PLANES
ARE COATED WITH GREENISH WHITE AND/OR YELLOWISH
BROWNISH GREEN MINERALS;
Alteration : MOD;
Vesicles : Size(mm): Percent: 1
VESICLES OCCUR BETWEEN 130-139CM;
Leg : 45 Top/Bottom Interval(mm): 1300/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 604.50
Core: 68 Top of Core Depth (m) : 603.00
Sect: 1 Top of Section Depth(m): 604.30
LITHOLOGY: DRILL CUTTINGS;
Comments : CUTTING WITH FRAGMENTS OF PLAG+OL+CPX+BASALTIC
GLASS+BASALTIC CHIPS+FORAMINIFERA;
Replacement: CARBONATE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 606.00
Core: 68 Top of Core Depth (m) : 603.00
Sect: 2 Top of Section Depth(m): 604.50
LITHOLOGY: DRILL CUTTINGS;
Comments : FRAGMENTS OF VARIOUS TYPES OF BASALT INCLUDES
APHYRIC AND PHYRIC AND DOLERITIC, FRAGMENT SIZE
FROM <1MM-2CM;
Phenocrysts: PLAGIOCLASE
OLIVINE
CLINOPYROXENE
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 607.50
Core: 68 Top of Core Depth (m) : 603.00
Sect: 3 Top of Section Depth(m): 606.00
LITHOLOGY: DRILL CUTTINGS;
Comments : FRAGMENTS OF VARIOUS TYPES OF BASALT INCLUDES
APHYRIC AND PHYRIC AND DOLERITIC, FRAGMENT SIZE
FROM <1MM-2CM;
Leg : 45 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 609.00
Core: 68 Top of Core Depth (m) : 603.00
Sect: 4 Top of Section Depth(m): 607.50
LITHOLOGY: DRILL CUTTINGS;
Comments : FRAGMENTS OF VARIOUS TYPES OF BASALT INCLUDES
APHYRIC AND PHYRIC AND DOLERITIC, SIZE FROM <1MM-
2CM;
Leg : 45 Top/Bottom Interval(mm): 1050/1430 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 610.43
Core: 68 Top of Core Depth (m) : 603.00
Sect: CC Top of Section Depth(m): 610.05
LITHOLOGY: DRILL CUTTINGS;
Comments : FRAGMENTS OF VARIOUS TYPES OF BASALT INCLUDES
APHYRIC AND PHYRIC AND DOLERITIC;
Leg : 45 Top/Bottom Interval(mm): 1430/1500 Analyst: Zolotarev, B.
Hole: 395A Sample Midpoint (m) : 610.50
Core: 68 Top of Core Depth (m) : 603.00
Sect: CC Top of Section Depth(m): 610.43
LITHOLOGY: PLAG-OL-CPX DOLERITIC BASALT;
Vesicles : Size(mm): 0.5-1 Percent: <1
VESICLES FILLED WITH WHITE AND GREENISH WHITE
MATERIAL;
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): TO 4
OLIVINE ( 5%)
Size(mm): TO 2
CLINOPYROXENE ( <1%)
Size(mm): TO 1
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