Leg : 58 Top/Bottom Interval(mm): 0/ 230 Analyst: Marsh, N.
Hole: 446 Sample Midpoint (m) : 376.51
Core: 41 Top of Core Depth (m) : 372.00
Sect: CC Top of Section Depth(m): 376.38
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-7), 2 (9-15), 3 (17-23);
Texture : APHYRIC,APHANITIC;
Alteration : FRESH;
Comments : BASALT IS LIGHT GRAY COLOR;
Vesicles : Size(mm): <1 Percent: 5
PCE 1, ALSO HAS OCCASIONAL VESICLES 1-2MM;
Size(mm): <1 Percent: 10
Size(mm): 1-10 Percent: 2
PCE 2+3, OFTEN PIPE-LIKE, PERPENDICULAR TO HOLE
ORIENTATION;
VESICLES LINED BY CALCITE + ZEOLITES POSSIBLY
TABULAR HEULANDITE AND ACICULAR AND PYRITE,
POSSIBLY SOME PYRRHOTITE;
Replacement: CALCITE
LINES VESICLES;
ZEOLITE
LINES VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 280 Analyst: Marsh, N.
Hole: 446 Sample Midpoint (m) : 381.78
Core: 42 Top of Core Depth (m) : 381.50
Sect: CC Top of Section Depth(m): 381.60
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-4), 2 (6-9), 3 (17-19), 4 (21-27);
Texture : APHYRIC,APHANITIC;
Comments : BASALT IS LIGHT GRAY COLOR;
Vesicles : Size(mm): <1 Percent: 5-10
PCE 1;
Size(mm): <1 Percent: 8
Size(mm): 1-2 Percent: 2
PCE 3;
Size(mm): <1 Percent: 7.5
Size(mm): 1-2 Percent: 7.5
PCE 4;
VESICLES LINED BY CALCITE + PYRITE + ZEOLITES;
Replacement: CALCITE
PYRITE
ZEOLITE
ALL ARE FOUND LINING VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 160 Analyst: Dick, H.
Hole: 446 Sample Midpoint (m) : 395.66
Core: 43 Top of Core Depth (m) : 391.00
Sect: 4 Top of Section Depth(m): 395.50
LITHOLOGY: SEDIMENT;
Leg : 58 Top/Bottom Interval(mm): 170/ 970 Analyst: Dick, H.
Hole: 446 Sample Midpoint (m) : 396.47
Core: 43 Top of Core Depth (m) : 391.00
Sect: 4 Top of Section Depth(m): 395.67
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 1 (17-25), 2 (27-33), 3 (36-43), 4 (47-56),
5 (58-68), 6A (71-86), 6B (86-95);
Texture : VERY SPARSELY PHYRIC, GRAIN SIZE PROGRESSIVELY
COARSENS FROM GLASSY CHILL ZONE AT TOP TO FINE-
GRAINED BASALT AT BASE OF THIS SECTION;
ALSO IS IN INTERVAL 17-26CM GLASSY CHILL ZONE
GRADING FROM BAKED CLAY MICROCONGLOMERATE TO 1CM OF
GLASS (PARTIALLY DEVITRIFIED) TO APHANITIC TO FINE-
GRAINED BASALT;
Alteration : FRESH;
ALTERATION OCCURS LARGELY IN VESICLES;
Vesicles : Size(mm): 0.5-3.0 Percent: 5-10
Location: Filling: CLAY,PYRITE
LARGELY FILLED AMYGDULES, CLAY MINERALS AND
PYRITES OFTEN CONCENTRICALLY ZONED IN VESICLES;
Groundmass : PLAGIOCLASE
Size(mm): 1.0
PLAGIOCLASE
Size(mm): <1
FELTY PLAG LATHS 1.0MM OR LESS (ACICULAR)
RANDOMLY ORIENTED AS INCIPIENT GNDMASS
CRYSTALLIZATION;
Phenocrysts: PLAGIOCLASE ( <<1%)
Size(mm): 0.75X2
1.0-3.0MM LONG; IN INTERVAL 17-26CM GLASS IS
FILLED WITH 1MM ACICULAR PLAG LATHS;
Replacement: CLAY
PYRITE
BOTH FOUND FILLING VESICLES + AMYGDULES;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Dick, H.
Hole: 446 Sample Midpoint (m) : 402.00
Core: 44 Top of Core Depth (m) : 400.50
Sect: 1 Top of Section Depth(m): 400.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-11), 2 (12-15), 3 (16-29), 4 (30-34),
5 (35-40), 6A (42-59), 6B (57-70), 6C (70-78),
6D (78-83), 6E (82-88), 6F (88-109), 6G (109-125),
6H (125-138), 7 (139-143), 8 (145-150);
Texture : APHYRIC, FINE-GRAINED;
Vesicles : Size(mm): 0.5-5.0 Percent: TO 3
Location: Filling: CLAY,CALCITE,PYR
AMYGDULES;
Alteration : SLIGHTLY TO MOD;
Comments : 0-10CM CLASTIC DIKE: GLAUCONITIC CLAY MATRIX WITH
CLAY FRAGMENTS UP TO 1CM ACROSS, 44-137CM CONTINUOUS
CLASTIC DIKE UPPER PORTION OF DIKE IS CHLORITIZED
AND HEAVILY ALTERED WITH CALCITE REPLACING SEDIMENT,
LOWER PORTION HAS CLASTIC BRECCIA RETAINING ITS
ORIGINAL APPEARANCE AND TEXTURE WITH CLAY MATRIX;
Replacement: CLAY
CALCITE
BOTH ARE FILLINGS FOR AMYGDULES;
PYRITE
PYRITE CLOT IN CLASTIC DIKE AT 10CM;
Leg : 58 Top/Bottom Interval(mm): 0/1500 Analyst: Dick, H.
Hole: 446 Sample Midpoint (m) : 403.50
Core: 44 Top of Core Depth (m) : 400.50
Sect: 2 Top of Section Depth(m): 402.00
LITHOLOGY: APHYRIC BASALT;
BASALT IDENTICAL TO CORE 44-1;
Piece No. : PCE 1A (1-10), 1B (10-17), 1C (17-43), 1D (44-59),
1E (59-65), 2 (67-70), 3 (72-75), 4 (76-80),
5 (82-86), 6 (87-96), 7 (98-102), 8 (103-112),
9 (114-121), 10 (123-126), 11 (129-132),
12 (134-137), 13 (140-144), 14 (145-150);
Texture : APHYRIC, FINE-GRAINED;
Alteration : FRESH TO SLIGHTLY;
Comments : BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): Percent: O.5
DARK SPOTS LIKE CRYSTALS OF PYX OFTEN WITH PYRITE
PROBABLY FILLED VESICLES;
Replacement: PYRITE
NEAR VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/1450 Analyst: Nisterenko, G.
Hole: 446 Sample Midpoint (m) : 404.95
Core: 44 Top of Core Depth (m) : 400.50
Sect: 3 Top of Section Depth(m): 403.50
LITHOLOGY: APHYRIC BASALT;
IDENTICAL TO BASALT IN CORE 44-1;
Piece No. : PCE 1 (1-5), 2 (7-11), 2A (12-25), 3B (25-38),
3C (38-42), 3D (42-51), 4 (53-54), 5 (55-61),
6 (64-76), 7 (79-96), 8 (99-105), 9 (107-115),
10 (117-121), 11 (123-129), 12 (131-138),
13 (141-145);
Texture : APHYRIC, FINE-GRAINED;
Alteration : FRESH TO SLIGHTLY;
Comments : PCES 3A+3B+3C+3D+7 HAVE CLASTIC DIKES, CLASTIC
BRECCIA IS A FEW, POSSIBLE CHLORITE IN CONTACT
WITH DIKE;
BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): 1-2 TO 5 Percent: 0.5
Replacement: PYRITE
FOUND WITH VESICLES;
CHLORITE
POSSIBLY IN CONTACT WITH DIKE;
Leg : 58 Top/Bottom Interval(mm): 0/ 600 Analyst: Nisterenko, G.
Hole: 446 Sample Midpoint (m) : 405.60
Core: 44 Top of Core Depth (m) : 400.50
Sect: 4 Top of Section Depth(m): 405.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (1-10), 1B (10-19), 2 (21-28), 3 (30-40),
4 (43-48), 5 (50-60);
Texture : APHYRIC, FINE-GRAINED;
Alteration : FRESH TO SLIGHTLY;
Comments : BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): Percent: 0.5
Location: Filling: PYRITE
DARK MINERALS AS FILLING;
Replacement: PYRITE
RARE, FILLS VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 100 Analyst: Nisterenko, G.
Hole: 446 Sample Midpoint (m) : 410.10
Core: 45 Top of Core Depth (m) : 410.00
Sect: 1 Top of Section Depth(m): 410.00
LITHOLOGY: APHYRIC BASLT;
Piece No. : PCE 1 (1-7), 2 (8-10);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY TO MOD;
Comments : BASALT IS DARK GRAY COLOR;
Vesicles : Size(mm): 2 Percent: <0.5
Location: Filling: CALCITE
Replacement: CALCITE
FILLS VESICLES;
Leg : 58 Top/Bottom Interval(mm): 0/ 160 Analyst: Nisterenko, G.
Hole: 446 Sample Midpoint (m) : 419.66
Core: 46 Top of Core Depth (m) : 419.50
Sect: 1 Top of Section Depth(m): 419.50
LITHOLOGY: DRILLING BRECCIA INCLUDES SEDIMENT PEBBLES AND SMALL
PIECES OF BASALT (UPHOLE CONTAMINATION);
Piece No. : PCE 1 (1-16);
Alteration : SLIGHTLY;
Leg : 58 Top/Bottom Interval(mm): 160/ 300 Analyst: Nisterenko, G.
Hole: 446 Sample Midpoint (m) : 419.80
Core: 46 Top of Core Depth (m) : 419.50
Sect: 1 Top of Section Depth(m): 419.66
LITHOLOGY: DRILLING FRAGMENTS - INCLUDES FRAGMENTS OF BASALT
AND MUDSTONE (GREEN WITH CALCITE VEINS SIMILAR TO
THAT IN CORE 43) - UPHOLE CONTAMINATION;
Piece No. : PCE 2 (17-30);
Alteration : SLIGHTLY;
Leg : 58 Top/Bottom Interval(mm): 300/1000 Analyst: Marsh, N.
Hole: 446 Sample Midpoint (m) : 420.50
Core: 46 Top of Core Depth (m) : 419.50
Sect: 1 Top of Section Depth(m): 419.80
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCE 3 (31-40), 4 (42-54), 5 (55-59), 6 (61-67),
7A (69-72), 7B (71-76), 7C (70-76), 8 (78-85),
9 (87-90), 10A (94-99), 10B (97-100);
Texture : PHYRIC,APHANITIC;
Structure : VEINS AND FRACTURES IN PCES 6+7+10 LINED BY GREENISH
CHLORITIC MATERIAL AND FINE DISSEMINATED PYRITE
OR PYRRHOTITE;
Alteration : SLIGHTLY;
Comments : BASALT IS LIGHT GRAY COLOR;
Vesicles : Size(mm): Percent: 1
LINED BY DARK CLAY MINERAL + CARBONATE +
ZEOLITE + AN ODD PYRITE OR CHALCOPYRITE GRAINS;
Phenocrysts: PLAGIOCLASE (10-15%)
Size(mm): 1-3
OLIVINE
POSSIBLY SOME PHENOS;
PYROXENE
SOME PHENOS;
Replacement: CLAY
CARBONATE
ZEOLITE
PYRITE
CHALCOPYRITE
ALL 5 FOUND LINING VESICLES;
CHLORITE
PYRITE
PYRRHOTITE
ABOVE 3 FOUND IN VEINS AND FRACTURES;
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