Leg : 54 Top/Bottom Interval(mm): 0/1500 Analyst: Dmitriev, Y.
Hole: 427 Sample Midpoint (m) : 147.50
Core: 9 Top of Core Depth (m) : 146.00
Sect: 1 Top of Section Depth(m): 146.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 1 (1-8), 2 (10-18), 3 (20-32), 4A (34-39),
4B (39-51), 5 (52-63), 6 (64-68), 7 (70-76),
8 (78-87), 9 (89-98), 10A (101-115), 10B (115-119),
11 (121-129), 12 (130-134), 13 (137-140),
14 (141-150);
Texture : PLAG SPARSELY PHYRIC,VERY FINE-GRAINED TO APHANITIC
GNDMASS,QUENCHED FRINGE(0.5CM) IN PCE 1;
Structure : MICROFISSURES FILLED WITH GREEN MINERAL IN PCE 3,
MICROVEINS WITH WHITE MINERAL(CARB & ZEOL) CUT THE
CORE PERPENDICULAR TO LONG AXIS IN PCES 4A-4B+6-13
SOME FILLED WITH DARK GREEN MINERAL,MICROVEINS IN
PCE 11 ARE 45-90 DEGREES FROM VERTICAL;
Alteration : FRESH
Vesicles : Size(mm): TO 1 Percent:
Location: Filling: ZEOL,SMEC
Shape : PINPOINT
PCES 1+5+7 VESICLES FILLED WITH NEEDLE-LIKE ZEOL &
DARK GREEN SMEC;
Size(mm): TO 1 Percent: 5
Location: Filling: SMEC
PCE 9 VESICLES FILLED WITH DARK GREEN SMEC;
Size(mm): TO 2 Percent: 2-3
Location: Filling: SMEC
PCE 14 VESICLES FILLED WITH GREEN SMEC;
Phenocrysts: PLAGIOCLASE
Replacement: CARBONATE
ZEOLITE
CARB & ZEOL ARE WHITE;
SMECTITE
GREEN TO DARK GREEN;
UNIDENTIFIED
GREEN UNIDENT.MINS FILLS MICROFISSURES IN PCE 3 &
SOME MICROVEINS IN PCES 4A-4B+6-13;
Leg : 54 Top/Bottom Interval(mm): 0/1420 Analyst: Dmitriev, Y.
Hole: 427 Sample Midpoint (m) : 148.92
Core: 9 Top of Core Depth (m) : 146.00
Sect: 2 Top of Section Depth(m): 147.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-10), 2 (12-15), 3 (17-26), 4 (27-37),
5 (39-46), 6 (48-53), 7 (54-59), 8 (60-67),
9A (70-77), 9B (78-84), 10 (85-89), 11A (90-103)
11B (103-110), 12 (111-125), 13 (125-136),
14 (138-142);
Texture : APHYRIC,FINE-GRAINED;
Structure : MICROVEINS FILLED WITH DARK GREEN CLAY.MINS(PCES
1-5),FRACTURE LINED WITH GREENISH-GRAY GLOBULAR ZEOL
& PYR & HEMA & BLUE-GREEN CLAY.MINS IN PCES 11-14;
Alteration : FRESH
Vesicles : Size(mm): TO 2 Percent:
Location: Filling: CLAY.MINS
PCES 1-3 HAVE VESICLES FILLED WITH GREEN CLAY.MINS
& VUGS(TO 7MM) WITH CORES OF QTZ & GREEN CLAY.MINS
WITH PYR GRAINS ON PERIPHERY,PCE 4 HAS SMALL
VESICLES FILLED WITH GREEN CLAY.MINS & VUGS
(0.6-0.7CM) FILLED WITH WHITE ZEOLS & HYDROBIOTITE
& GREEN CLAY.MINS WITH EMPTY CENTERS,PCE 5 HAS
VUGS(1-2CM) FILLED WITH CARB.UNSPEC & PYR &
HYDROBIOTITE;
Size(mm): TO 8 Percent:
Location: Filling: CLAY.MINS,QTZ
PCE 6 HAS VESICLES LINED WITH PALE BLUE-GREEN
CLAY.MINS & QTZ(?),PCE 7 HAS VUG LINED WITH
SACCHAROIDAL SUBHEDRAL PALE GREEN ZEOL & BLUE
CLAY.MINS(<0.1MM GRAINS);
Location: Filling: CLAY
Shape : ELLIPTICAL
PCE 9A HAS LARGE ELLIPTICAL BLUE CLAY-LINED VESICL
(2CM MAJOR AXIS),PCES 9B-10 HAVE SIMILAR BUT
SMALLER VESICLES;
Replacement: ZEOLITE
WHITE,GREENISH-GRAY & GLOBULAR IN PCES 1-5,
SACCHAROIDAL & SUBHEDRAL PALE GREEN ZEOL IN PCE 7,
HEMATITE
CARBONATE
PCE 5;
MARCASITE
ID MARCASITE UNCERTAIN;
CLAY
DARK GREEN,BLUE-GREEN,GREEN,BLUE;
QUARTZ
HYDROBIOTITE
Leg : 54 Top/Bottom Interval(mm): 0/1480 Analyst: Humphris, S.
Hole: 427 Sample Midpoint (m) : 150.48
Core: 9 Top of Core Depth (m) : 146.00
Sect: 3 Top of Section Depth(m): 149.00
LITHOLOGY: PLAG SPARSELY PHYRIC TO APHYRIC BASALT;
Piece No. : PCE 1 (2-13), 2 (15-28), 3 (30-40), 4 (42-49),
5A (51-61), 5B (62-78), 6 (80-87), 7 (90-93),
8A (95-109), 8B (110-130), 9 (132-144),
10 (147-148);
Texture : PLAG SPARSELY PHYRIC TO APHYRIC,GLASSY SEGREGATIONS
IN PCES 1+8A,MEDIUM-GRAINED;
Alteration : FRESH
Vesicles : Size(mm): Percent: RARE
VERY RARE VESICLES WITH GREENISH-BLACK
UNIDENT.MINS ON OUTSIDE;
IRREGULAR VUG-LIKE CAVITIES FILLED WITH BLUE-GREEN
CLAY.MINS OR WHITE ZEOL IN PCES 2+4+6;
Phenocrysts: PLAGIOCLASE ( <1%)
ONE PLAG PCE(8MM) IN PCE 8B;
Replacement: CLAY
BLUE-GREEN;
ZEOLITE
WHITE;
Leg : 54 Top/Bottom Interval(mm): 0/1380 Analyst: Schrader, E.L.
Hole: 427 Sample Midpoint (m) : 151.88
Core: 9 Top of Core Depth (m) : 146.00
Sect: 4 Top of Section Depth(m): 150.50
LITHOLOGY: PLAG-CPX SPARSELY PHYRIC BASALT;
MASSIVE BASALT;
Piece No. : PCES 1 (2-13), 2 (15-24), 3 (27-32), 4A (33-60),
4B (60-72), 5A (75-102), 5B (102-128), 6 (130-139);
Texture : SPARSELY PHYRIC,UNIFORM GRAINSIZE DISTRIBUTION &
SAME GENERAL MINERALOGY & DEGREE OF XTLLINITY
THROUGHOUT ENTIRE SECTION,MEDIUM-GRAINED;
Alteration : FRESH
Phenocrysts: PLAGIOCLASE
ONE LARGE PHENO(10MM) IN PCE 3;
CLINOPYROXENE
Leg : 54 Top/Bottom Interval(mm): 0/1070 Analyst: Mattey, D.
Hole: 427 Sample Midpoint (m) : 153.07
Core: 9 Top of Core Depth (m) : 146.00
Sect: 5 Top of Section Depth(m): 152.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-16), 2 (18-22), 3 (25-30), 4 (32-37),
5 (38-48), 6A (50-66), 6B (66-76), 7 (78-107);
Texture : SPARSELY PHYRIC,MEDIUM-GRAINED;
Structure : FRACTURE VEIN FILLED WITH ZEOL NEAR BOTTOM OF PCE 1;
Alteration : FRESH
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE
FRESH,SMALL GLOMEROCRYSTS OF PLAG & CPX IN PCE 6B;
Replacement: ZEOLITE
Leg : 54 Top/Bottom Interval(mm): 0/1380 Analyst: Natland, J.
Hole: 427 Sample Midpoint (m) : 156.88
Core: 10 Top of Core Depth (m) : 155.50
Sect: 1 Top of Section Depth(m): 155.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE BASALT;
Piece No. : PCES 1 (0-14), 2 (18-22), 3A (25-42), 3B (42-62),
4A (64-82), 4B (80-95), 5 (98-108), 6A (112-125),
6B (125-138);
Texture : APHYRIC,MEDIUM-GRAINED,PLAG LATHS GIVE FELTY
TEXTURE,NO GRAINSIZE VARIATION IN SAMPLE,BLACK GLASS
& OP.MINS ZONES VISIBLE;
Structure : THIN CRACKS WITH SECONDARY MINERALS IN PCES 3B+5,PCE
6B IS FRACTURED OBLIQUELY ALONG A CRACK REVEALING
BROWNISH CLAY & CARB ON SURFACE;
Alteration : FRESH
Vesicles : ONE 3MM DIAMETER EMPTY VESICLE IN PCE 5,OTHER PCES
HAVE SCATTERED VESICLES ON ROUNDED SURFACES;
Phenocrysts: PLAGIOCLASE
VISIBLE PLAG LATHS;
CLINOPYROXENE
VISIBLE AMBER CPX;
Replacement: OPAQUE MINERALS
CLAY MINERALS
CARBONATE
UNIDENTIFIED
UNIDENT.MINS FILLS CRACKS IN PCES 3B+5;
Leg : 54 Top/Bottom Interval(mm): 0/1380 Analyst: Mattey, D.
Hole: 427 Sample Midpoint (m) : 158.38
Core: 10 Top of Core Depth (m) : 155.50
Sect: 2 Top of Section Depth(m): 157.00
LITHOLOGY: PLAG SPARSELY PHYRIC TO APHYRIC BASALT;
MASSIVE BASALT;
Piece No. : PCES 1A (1-13), 1B (14-27), 1C (27-34), 2A (37-47),
2B (47-55), 2C (50-61), 2D (60-75), 2E (75-91),
2F (91-118), 2G (118-121), 3 (123-126), 4 (129-138);
Texture : SPARSELY PHYRIC TO APHYRIC,MEDIUM-GRAINED,NO
VARIATION IN GRAINSIZE;
Structure : MASSIVE BASALT;
Alteration : FRESH
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE
Leg : 54 Top/Bottom Interval(mm): 0/1470 Analyst: Schrader, E.L.
Hole: 427 Sample Midpoint (m) : 159.97
Core: 10 Top of Core Depth (m) : 155.50
Sect: 3 Top of Section Depth(m): 158.50
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
MASSIVE BASALT;
Piece No. : PCES 1A (2-14), 1B (14-19), 2 (22-35), 3 (38-47),
4A (52-57), 4B (57-65), 5 (70-78), 6 (82-87),
7 (90-96), 8 (99-104), 9A (105-119), 9B (120-127),
9C (126-134), 9D (134-142), 9E (140-147);
Texture : SPARSELY PHYRIC,MEDIUM-GRAINED,SOMEWHAT COARSER
TOWARDS BOTTOM;
Structure : MASSIVE BASALT,FISSURES & FRACTURES ENCRUSTED WITH
ZEOL & FE.OXIDES & CARB IN PCES 2+4A-4B+7-9E;
Alteration : FRESH
Phenocrysts: PLAGIOCLASE
Replacement: ZEOLITE
FERROUS OXIDE
CARBONATE
Leg : 54 Top/Bottom Interval(mm): 0/1490 Analyst: Natland, J.
Hole: 427 Sample Midpoint (m) : 161.49
Core: 10 Top of Core Depth (m) : 155.50
Sect: 4 Top of Section Depth(m): 160.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE BASALT;
Piece No. : PCES 1A (3-16), 1B (16-20), 1C (27-29), 1D (29-36),
1E (44-55), 1F (57-69), 1G (70-81), 1H (81-96),
1I (97-112), 1J (112-129), 1K (129-149);
Texture : APHYRIC,MEDIUM-GRAINED,FELTY TEXTURE,APHANITIC TO
GLASSY,LITTLE OR NO VARIATION IN GRAINSIZE;
Structure : THIN CRACKS WITH SECONDARY MINERALS IN PCES
1D+1F+1K,MAJOR CRACKS ALONG WHICH ROCK IS FRACTURED
& COVERED WITH FLAKY GREENISH CLAY.MINS LENGTHWISE
THROUGH PCES 1A+1I+1J,OTHER CLAY.MINS COATED
FRACTURES ON PCES 1B+1D-1F,CARB(?) ON SURFACE OF
PCE 1D;
Alteration : FRESH
Vesicles :
Location: Filling:
Shape : PINHOLE
MINOR PINHOLE VESICLES ON ROUNDED SURFACES WITH
NO SECONDARY MINERALS;
Phenocrysts: PLAGIOCLASE
LATHS;
CLINOPYROXENE
AMBER,INTERSTITIAL;
Replacement: CALCITE
CLAY MINERALS
GREENISH CLAY.MINS,FLAKY;
Leg : 54 Top/Bottom Interval(mm): 0/1190 Analyst: Humphris, S.
Hole: 427 Sample Midpoint (m) : 162.69
Core: 10 Top of Core Depth (m) : 155.50
Sect: 5 Top of Section Depth(m): 161.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (0-11), 1B (12-17), 2 (19-23), 3 (25-38),
4A (40-56), 4B (55-73), 5 (75-84), 6 (86-94),
7 (97-119);
Texture : APHYRIC,MEDIUM-GRAINED BUT FINER-GRAINED THAN CORE
10-4,GLASSY SEGREGATIONS IN PCES 1B+4A;
Structure : SMALL VEIN IN PCE 1B,SOME GLASSY BLEBS IN PCE 4B;
Alteration : FRESH
Comments : PCE 7 CONSISTS OF WEATHERED & FRACTURED BASALTS
GROUND UP BY DRILLING;
Vesicles : IRREGULAR VUGS TO 6MM IN DIAMETER FILLED WITH
FINE-GRAINED GREENISH-WHITE MINERAL IN PCES 1A+5,A
FEW VESICLES IN PCES 3+5;
Phenocrysts: PLAGIOCLASE ( RARE%)
A FEW RARE PHENOS IN PCE 3;
Replacement: UNIDENTIFIED
GREENISH-WHITE UNIDENT.MINS FILLS VUGS;
Leg : 54 Top/Bottom Interval(mm): 0/ 240 Analyst: Humphris, S.
Hole: 427 Sample Midpoint (m) : 165.24
Core: 11 Top of Core Depth (m) : 165.00
Sect: 1 Top of Section Depth(m): 165.00
LITHOLOGY: DRILL CUTTINGS;
Piece No. : PCE INTERVAL 0-24;
Comments : CONSIST OF SMALL CHIPS OF BASALT & GREEN CLAY.MINS
WITH SOME ORANGE-BROWN FE.OXIDES;
Replacement: CLAY MINERALS
FERROUS OXIDE
Leg : 54 Top/Bottom Interval(mm): 270/ 650 Analyst: Humphris, S.
Hole: 427 Sample Midpoint (m) : 165.65
Core: 11 Top of Core Depth (m) : 165.00
Sect: 1 Top of Section Depth(m): 165.27
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (27-31), 2 (33-36), 3 (38-44), 4 (46-50),
5 (52-56), 6 (58-65);
Texture : APHYRIC,FINE-GRAINED;
Alteration : FRESH
ONE ZONE OF ALTERATION NEAR MARGIN IN PCE 4 FILLED
WITH WHITE CLAY.MINS;
Comments : NO PCES ORIENTED;
Vesicles :
Location: Filling: CLAY.MINS
Shape : LONG,TUBULAR
VESICLES THROUGHOUT,LONG & TUBULAR VESICLES FILLED
WITH FINE-GRAINED WHITE CLAY.MINS IN PCES 1+5-6,
VUGS IN PCE 1 FILLED WITH GREENISH-WHITE SECONDARY
MINERAL & IN PCE 2 FILLED WITH BLUE CLAY.MINS;
Phenocrysts: PLAGIOCLASE ( RARE%)
VERY RARE PHENOS IN PCE 3;
Replacement: CLAY MINERALS
WHITE,FINE-GRAINED,BLUE CLAY.MINS IN PCE 2;
UNIDENTIFIED
UNIDENT GREENISH-WHITE SECONDARY MINERALS FILL
VUGS IN PCE 1;
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