Leg : 54 Top/Bottom Interval(mm): 0/1490 Analyst: Dmitriev, Y.
Hole: 425 Sample Midpoint (m) : 82.99
Core: 7 Top of Core Depth (m) : 81.50
Sect: 1 Top of Section Depth(m): 81.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (0-8), 2 (10-14), 3 (16-19), 4 (20-23),
5 (24-32), 6 (34-40), 7 (42-49), 8 (52-59),
9 (62-70), 10 (72-76), 11 (78-83), 12 (86-93),
13 (95-100), 14 (102-108), 15 (110-118),
16 (121-125), 17A (127-136), 17B (137-143),
18 (144-149);
Texture : APHYRIC,FINE-GRAINED & INCREASINGLY XTLLIZED FURTHER
DOWN IN SECTION;
Structure : MICROFISSURES IN PCES 1+4-6+11+16 FILLED WITH GREEN
SECONDARY MINERAL;
Alteration : FRESH
WEATHERING RINDS IN PCES 6+9+15-16,MOTTLED DUE TO
ALTERATION;
Comments : BASALT GRAY TO GRAY-BLACK;
Vesicles :
Location: Filling: UNIDENT
Shape : PINPOINT
PCES 1-4 HAVE PINPOINT VESICLES BUT SOME <2MM &
FILLED WITH GREEN MINERAL & LINED WITH BLUE
MINERAL,PCE 5 HAS VESICLES IN WEATHERED ZONE
(0.5-0.8CM);
Location: Filling: UNIDENT
PCE 6 HAS VESICLES IN WEATHERED ZONE FILLED WITH
DARK GREEN MATERIAL & BROWNISH CORES,IN PCES 6-8
VESICLES ARE EMPTY,IN PCE 9 ON BOTTOM SIDE THERE
IS A WEATHERED ZONE 1CM WIDE WITH VESICLES FILLED
WITH DARK MATERIAL;
Size(mm): < Percent: 1 8
Location: Filling: UNIDENT
EMPTY OR FILLED WITH GREEN MATERIAL;
Size(mm): Percent: 10-15
PCE 11;
Size(mm): Percent: 10
Location: Filling: UNIDENT
PCE 12,ON TOP OF PCE THERE IS A WEATHERED ZONE
WITH FILLED VESICLES;
Size(mm): Percent: 3-5
PCE 14;
Size(mm): Percent: 1
Location: Filling: UNIDENT
PCE 15 VESICLES FILLED WITH DARK GREEN MINERAL
INSIDE DARK GRAY WEATHERED ZONE ON LEFT SIDE,VUGS
NEAR BOTTOM & NEAR WEATHERED ZONE(0.5CM);
A CLUSTER OF VUGS(<1MM) WITH AGGREGATES OF
RHOMBOHEDRAL XTLS IN PCES 17A-17B;
Phenocrysts: PLAGIOCLASE ( RARE%)
Replacement:
IN MICROFISSURES;
UNIDENTIFIED
VARIOUSLY COLORED UNIDENT.MINS FOUND THROUGHOUT
SECTION FILLING VUGS & VESICLES;
Leg : 54 Top/Bottom Interval(mm): 0/1280 Analyst: Mattey, D.
Hole: 425 Sample Midpoint (m) : 84.28
Core: 7 Top of Core Depth (m) : 81.50
Sect: 2 Top of Section Depth(m): 83.00
LITHOLOGY: PLAG-CPX SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-7), 2 (10-21), 3 (24-28), 4 (32-37),
5 (39-42), 6 (45-48), 7A (52-58), 7B (58-77),
8A (80-90), 8B (91-95), 9 (97-102), 10 (106-110),
11 (112-121), 12 (123-128);
Texture : SPARSELY PHYRIC,MEDIUM-TO-COARSE-GRAINED INCREASING
DOWN SECTION,GLASSY SEGREGATIONS TOWARD BASE;
Structure : FRACTURES;
Alteration : SLIGHTLY
BLOTCHY APPEARANCE DUE TO ALTERATION,HALF THE
SAMPLES DISPLAY OPEN OR YELLOWISH WEATHERING RIND
<1CM THICK WHICH PARALLEL CUT OR FRACTURED
SURFACES;
Comments : WHOLE SECTION REPRESENTS COOLING UNIT;
Vesicles :
Location: Filling: ZEOL,CLAY.MINS
SCATTERED VESICLES & VUGS LINED WITH COLORLESS
ZEOL & COATED WITH BLUE CLAY.MINS;
Groundmass : GNDMASS HAS GREEN MAFIC PHASE;
Phenocrysts: PLAGIOCLASE ( 2%)
Size(mm): <2
LATHS,LARGE PLAG PHENOS NEAR TOP OF PCE 1;
CLINOPYROXENE
Replacement: ZEOLITE
COLORLESS;
CLAY MINERALS
BLUE;
Leg : 54 Top/Bottom Interval(mm): 0/ 890 Analyst: Humphris, S.
Hole: 425 Sample Midpoint (m) : 91.89
Core: 8 Top of Core Depth (m) : 91.00
Sect: 1 Top of Section Depth(m): 91.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (1-5), 2 (7-14), 3 (16-21), 4 (22-28),
5 (32-36), 6 (38-50), 7 (52-60), 8 (62-66),
9 (68-75), 10 (77-89);
Texture : SPARSELY PHYRIC,MEDIUM-GRAINED,SOME GLASSY
SEGREGATIONS;
Alteration : MOD
WEATHERING RINDS IN PCES 1+5-7 MOSTLY 1CM THICK &
ARE DUE TO OXIDATION;
Vesicles :
Location: Filling: CARB,CLAY.MINS
SCATTERED VESICLES FILLED WITH CARB OR BLUE
CLAY.MINS OR EMPTY;
Phenocrysts: PLAGIOCLASE ( <1%)
Replacement: CARBONATE
CLAY MINERALS
BLUE CLAY.MINS;
Leg : 54 Top/Bottom Interval(mm): 910/1500 Analyst: Humphris, S.
Hole: 425 Sample Midpoint (m) : 92.50
Core: 8 Top of Core Depth (m) : 91.00
Sect: 1 Top of Section Depth(m): 91.91
LITHOLOGY: PLAG-CPX-OL PHYRIC BASALT;
Piece No. : PCES 11 (91-100), 12 (102-112), 13 (113-120),
14 (122-127), 15 (130-138), 16 (140-150);
Texture : PHYRIC,MEDIUM-TO-COARSE-GRAINED;
Alteration : MOD
WEATHERING RINDS(1CM) IN PCES 12-15;
Vesicles :
Location: Filling: CLAY.MINS
SCATTERED VESICLES WITH BLUE CLAY.MINS FILLING;
Phenocrysts: PLAGIOCLASE (12-15%)
Size(mm): <4
CLINOPYROXENE ( 1-2%)
OLIVINE ( <1%)
ALTERATION TO GREEN-BROWN UNIDENT.MINS;
Replacement: CLAY MINERALS
BLUE;
UNIDENTIFIED
OL ALTERED TO GREEN-BROWN UNIDENT.MINS;
Leg : 54 Top/Bottom Interval(mm): 0/1490 Analyst: Humphris, S.
Hole: 425 Sample Midpoint (m) : 101.99
Core: 9 Top of Core Depth (m) : 100.50
Sect: 1 Top of Section Depth(m): 100.50
LITHOLOGY: APHYRIC TO PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-5), 2 (6-10), 3 (11-18), 4 (21-24),
5 (26-33), 6 (34-42), 7 (43-47), 8 (49-57),
9 (58-66), 10 (68-72), 11 (73-84), 12 (85-88),
13 (90-94), 14 (96-104), 15 (106-115), 16 (116-121),
17 (122-133), 18 (136-143), 19 (146-149);
Texture : APHYRIC IN PCES 1-2+6-12+15-19,WEATHERING RINDS IN
PCES 6+7+11+12+17 ARE <0.5CM WITH ONE 3CM IN PCE 6,
APHANITIC;
Alteration : FRESH
PCES 1-5+8-10+13-16+18-19;
MOD
PCES 6-7+11-12+17,OXIDATION ALONG VEINS &
SCATTERED WEATHERING RINDS;
Vesicles :
Location: Filling: CLAY,UNIDENT,PYR
VESICLES & VUGS SCATTERED THROUGHOUT & FILLED WITH
BROWN & GREEN CLAY.MINS OR WHITE FINE-GRAINED
LINING & SOME WITH BLUE/GREEN CLAY.MINS OR PYR,
SOME VESICLES EMPTY;
Phenocrysts: PLAGIOCLASE
Size(mm): <3
Replacement:
IN VEINS;
CLAY MINERALS
BLUE/GREEN,BROWN,GREEN;
UNIDENTIFIED
WHITE,FINE-GRAINED;
Leg : 54 Top/Bottom Interval(mm): 0/1490 Analyst: Natland, J.
Hole: 425 Sample Midpoint (m) : 103.49
Core: 9 Top of Core Depth (m) : 100.50
Sect: 2 Top of Section Depth(m): 102.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-8), 2 (12-17), 3 (22-30), 4 (33-43),
5 (47-52), 6 (57-64), 7 (66-73), 8 (76-79),
9 (82-88), 10 (93-99), 11 (102-108), 12 (110-115),
13 (118-123), 14 (127-132), 15 (136-140),
16 (142-149);
Texture : SPARSELY PHYRIC,FINE-GRAINED BUT NEARLY HOLOXTLN,
UNIFORM FROM TOP TO BOTTOM;
Structure : SOME FRACTURES THROUGHOUT;
Alteration : SLIGHTLY
GNDMASS PROBABLY HAS PERVASIVE MINOR ALTERATION;
Vesicles : Size(mm): Percent: 0
ONE VESICLE IN RIND IN PCE 16;
Phenocrysts: PLAGIOCLASE
Size(mm): 2-3
MOSTLY IN PCES 3+8+13;
Replacement: CHLORITE
GREEN,ON CRACKS & FRACTURE SURFACES,IN PCES 1-6+
9-13+16;
ZEOLITE
POSSIBLY IN PCE 14 IN VESICLE;
CALCITE
IN PCES 1-3+15;
FERROUS OXIDE
POSSIBLE ORANGE FE.OXIDE IN PCES 1+4-5+8-10+16;
MANGANESE OXIDE
BLACK MN.OXIDE IN PCE 7 ON UPPER SURFACE;
Leg : 54 Top/Bottom Interval(mm): 0/ 920 Analyst: Schrader, E.L.
Hole: 425 Sample Midpoint (m) : 104.42
Core: 9 Top of Core Depth (m) : 100.50
Sect: 3 Top of Section Depth(m): 103.50
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-7), 2 (9-14), 3 (17-22), 4 (25-29),
5 (31-37), 6 (40-46), 7 (49-51), 8 (53-56),
9 (58-65), 10 (68-78), 11 (82-85), 12 (87-92);
Texture : SPARSELY PHYRIC,GLASSY SEGREGATIONS IN PCES 4-5,
COARSE-GRAINED;
Structure : SOME VEINS & FRACTURES;
Alteration : MOD
PCES 1+3-5+7-8+11-12,WEATHERING RINDS IN PCES
1+3+12 APPEAR TO BE GREEN TO BROWN OXIDATION OF
BASALT,WEATHERED PEBBLES IN PCE 11,OXIDIZED ALONG
VEINS & FRACTURES;
FRESH
REST OF SECTION;
Vesicles :
Location: Filling: ZEOL,CALCITE
SCARCE VESICLES MOSTLY FILLED WITH XTLS OF ZEOL &
CALCITE,VUGS UP TO 1MM IN PCE 9;
Replacement: ZEOLITE
CALCITE
CHLORITE
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