Leg : 54 Top/Bottom Interval(mm): 0/1470 Analyst: Mattey, D.
Hole: 424B Sample Midpoint (m) : 33.47
Core: 5 Top of Core Depth (m) : 32.00
Sect: 1 Top of Section Depth(m): 32.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (1-7), 2 (9-15), 3 (16-23), 4 (25-31),
5 (33-41), 6 (43-48), 8 (57-63), 10 (74-78),
11 (81-85), 12 (88-96), 13 (98-102), 14 (104-110),
15 (113-120), 16 (122-134), 17 (136-146);
Texture : SPARSELY PHYRIC,FINE-GRAINED & SLIGHTLY COARSER IN
PCES 10+17,VARIOLITIC TEXTURE VISIBLE ON CUT SURFACE
& LESS VARIOLITIC IN PCE 14,GRADES INTO GLASS IN PCE
2;
Structure : FRACTURES IN PCES 12+16 WITH PCE 12 FILLED WITH
NUMBER 2Y MINERALS;
Alteration : FRESH
Vesicles :
Location: Filling: ZEOL,CLAY.MINS
Shape : TUBE
SMALL TUBE VESICLES FILLED WITH ZEOL & COATED WITH
BLUE CLAY.MINS,MORE VESICLES IN PCE 2 & LESS
VESICLES IN PCES 13+16;
Groundmass : SULFIDE
GRAINS OF PRIMARY SULFIDE IN GLASS OF PCE 2;
Phenocrysts: PLAGIOCLASE
CLINOPYROXENE
CPX XTL IS PRESENT IN PCES 3+14;
Replacement: CLAY MINERALS
BLUE CLAY.MINS IN VESICLES;
ZEOLITE
IN VESICLES;
Leg : 54 Top/Bottom Interval(mm): 0/1470 Analyst: Mattey, D.
Hole: 424B Sample Midpoint (m) : 33.47
Core: 5 Top of Core Depth (m) : 32.00
Sect: 1 Top of Section Depth(m): 32.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 7 (51-55), 9 (65-72);
Texture : FINE-GRAINED APHYRIC,FINER-GRAINED INTERIOR WHICH
IS PROBABLY MORE XTLLN;
Alteration : FRESH
Vesicles : Size(mm): Percent: RARE
Leg : 54 Top/Bottom Interval(mm): 0/ 740 Analyst: Humphris, S.
Hole: 424B Sample Midpoint (m) : 34.24
Core: 5 Top of Core Depth (m) : 32.00
Sect: 2 Top of Section Depth(m): 33.50
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (1-9), 2 (10-20), 3 (23-43), 4 (36-42),
5 (44-50), 6 (51-60), 7 (63-64), 8 (67-74);
Texture : SPARSELY PHYRIC,FINE-GRAINED PCE 1 & SLIGHTLY
COARSER GRAINED IN THE REST OF THE SECTION;
Structure : LARGE VUGS IN PCE 4 & ALONG ONE MARGIN WHICH
CONTAINS BOTRYOIDAL MANGANESE & SOMETIMES COATED
WITH BLUE CLAY.MINS;
Alteration : FRESH
Comments : WHOLE SECTION APPEARS TO BE VERY SIMILAR & FROM THE
SAME UNIT;
Vesicles :
Location: Filling: CLAY.MINS,ZEOL
BLUE CLAY.MINS FILLS VESICLES IN PCE 1 & ALSO
COATS ZEOL IN VESICLES OF OTHER PCES,VUGS ALSO
PRESENT IN PCE 5 & ARE FILLED WITH ZEOL(?) & SOME
COATINGS OF BLUE CLAY.MINS;
Phenocrysts: PLAGIOCLASE
PCE 1 HAS SLIGHTLY MORE PHENOS THAN REST OF CORE;
Replacement: CLAY MINERALS
BLUE CLAY.MINS IN VESICLES & COATING VUGS;
ZEOLITE
ID UNCERTAIN,MAY BE PRESENT IN VESICLES & IN VUGS
IN PCE 5;
Leg : 54 Top/Bottom Interval(mm): 0/1450 Analyst: Dmitriev, Y.
Hole: 424B Sample Midpoint (m) : 42.95
Core: 6 Top of Core Depth (m) : 41.50
Sect: 1 Top of Section Depth(m): 41.50
LITHOLOGY: APHRYIC BASALT;
Piece No. : PCES 1 (0-7), 2 (7-15), 3 (17-23), 4 (24-28),
5 (29-35), 6 (36-40), 7 (41-46), 8 (48-53),
9 (54-63), 10 (65-73), 11 (75-81), 12 (82-86),
13 (88-95), 14 (96-101), 15 (102-109), 16 (110-119),
17 (120-128), 18 (130-135), 19 (137-143);
Texture : APHYRIC,FINE-GRAINED GNDMASS IN MOST PCES & VERY
FINE-GRAINED IN PCES 2-3+5-8+17-19,BLACK GLASS
COATING 1-2MM ON PCE 5 WITH TRANSITION FROM BASALT
TO GLASS GRADUAL,A BLACK RESIN-LIKE VOLCANIC GLASS
2-3MM ON PCE 16;
Structure : FISSURES IN PCE 17,MICROFISSURES IN PCES 13+14,
MICROFRACTURE WITH A LIGHTER COLORED ZONE NEAR IT
(PCES 9+10),FISSURES WITH BLUE CLAY.MINS COATING IN
PCE 6;
Alteration : FRESH
BLUE CLAY.MIN COATING ON WEATHERED SURFACES IN
PCES 9-10+13-14+17 ALSO PRESENT ARE PATCHES 1-3MM
OF LIGHTER(PYX AGGREGATES(?)) & DARKER MATERIAL IN
PCES 11+16 ALSO BANDING DUE TO THE LIGHTER STREAKS
ALONG ZONATION 20MM WIDE PCE 16;
Comments : DARK GRAY BASALT REPRESENTS A MARGINAL PART OF
COOLING UNIT PCE 16,GENERALLY BASALT VARIES FROM
GRAY TO DARK GRAY IN COLOR;
Vesicles :
Location: Filling: CLAY.MINS
BLUISH CLAY.MINS COATING VESICLES IN PCES 1+15;
Location: Filling:
Shape : PINPOINT
PINPOINT VESICLES IN PCES 2-3+5+9-10 & ALSO IN
PCES 13-14 WHICH ARE MOSTLY EMPTY & PRESENT BUT
RARE IN PCE 16;
Size(mm): 0.1 Percent: 5
Location: Filling: FE.OXIDE,CLAY.MIN
Shape : IRREG
VESICLES PARTLY IRREGULAR MOSTLY EMPTY BUT SOME
FE.OXIDE & BLUE CLAY.MIN COATING PCE 4;
Size(mm): 0.1 Percent:
EMPTY VESICLES IN PCES 6-7;
Size(mm): Percent: 5
PCES 18-19;
CLUSTER OF VUGS 0.1-0.2MM SITUATED NEAR THE
FRINGES ON PCES 2+8,VUGS ALSO PRESENT IN PCES 6+7;
Phenocrysts: PLAGIOCLASE ( RARE%)
RARE PLAG PHENOS PCE 19;
PYROXENE
PYX AGGREGATES(?) IN PCES 11+16 NOT CERTAIN IF
PRESENT;
Replacement: CLAY MINERALS
BLUE CLAY.MIN COATING VESICLES & FISSURES &
WEATHERED SURFACES;
FERROUS OXIDE
COATING IN VESICLES;
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