Leg : 16 Top/Bottom Interval(mm): 1120/1500 Analyst: Yeats, R.S.
Hole: 157 Sample Midpoint (m) : 432.50
Core: 49 Top of Core Depth (m) : 431.00
Sect: 1 Top of Section Depth(m): 432.12
LITHOLOGY: BASALT;
Piece No. : PCE 1 (112-118), 2 (118-123), 3 (123-125),
4 (130-132), 5 (133-144), 6 (144-150);
Texture : PCE 1 IS A SUBROUNDED OVOID, PCE 2 IS GLASSY,
POSSIBLE CRUST OF A BASALT PILLOW, PCE 3 IS FINE-
GRAINED, PCES 5 AND 6 ARE VERY FINE-GRAINED TO
ALTERED GLASSY, ALSO CLOTS OF MAFIC PHENOS;
Structure : PCE 2 IS CURVED, PSEUDO AND IRREGULARLY LAMINATED
CONVEX UPWARD, APPARENT FLOW STRUCTURE, PCES 5 AND 6
ARE MASSIVE WITH IRREGULAR VEINS OF CALCITE;
Alteration : PCES 3 AND 4 ARE ALTERED, PCES 5 AND 6 ARE ALTERED
IN PATCHES THOUGHOUT AND ADJACENT TO CALCITE
VEINS;
Comments : PCE 1 IS LIGHT TO VERY LIGHT GRAY (N6), COMPRESSED
AXIAL TO THE CORE, PCE 2 IS LIGHT TO MED DARK GRAY
(N7-N4), PCE 3 IS MOTTLED MED GRAY (N5), POSSIBLE
VOLCANIC SEDIMENTS, PCE 4 IS MED GRAY, COMPRESSED
AXIAL TO CORE, PCES 5 AND 6 ARE MED DARK GRAY (N4)
WITH CALCITE VEINS VERY LIGHT GREY (N2);
Vesicles : PCE 1 HAS FILLED VESICLES;
PCE 2 HAS SMEARED VESICLES;
Size(mm): 1-5 Percent:
AMYGDULES IN PCE 4;
Phenocrysts: OTHER
Size(mm): 1-4
MAFIC PHENO POSSIBLY PYX, POSSIBLY ALTERED BUT
WELL PRESERVED CLEVAGE;
Groundmass : PLAGIOCLASE ( 5-10%)
Size(mm): .2-1
PLAG LATHS IN PCES 5 AND 6;
Replacement: CALCITE
CALCITE IN MATRIX;
Leg : 16 Top/Bottom Interval(mm): 0/1500 Analyst: Yeats, R.S.
Hole: 157 Sample Midpoint (m) : 434.00
Core: 49 Top of Core Depth (m) : 431.00
Sect: 2 Top of Section Depth(m): 432.50
LITHOLOGY: BASALT;
Piece No. : PCE 1 (0-5), 2 (4-9), 3 (9-23), 4 (22-31),
5 (31-46), 6 (46-51), 7 (51-54), 8 (55-66),
9 (66-94), 10 (94-104), 11 (104-114), 12 (114-116),
13 (116-124), 14 (124-143), 15 (143-150);
Texture : FINE-GRAINED, APPEARS TO BE GLOMEROPORPHYRITIC;
Structure : MASSIVE, CUT BY IRREGULAR VEINS 0.5 TO 2MM THICK,
RICH IN COARSE XTLINE CALCITE WITH OCCATIONAL CLOTS
OF COARSE GRAINED PYRITE IN PCES 1,2,4,6 AND 9, SOME
SULFIDE (MAYBE CHALPYR) ON PCES 6 AND 9;
Alteration : POSSIBLY ALTERED MAFICS, SMALL VERY DARK GRAY
AREAS 0.5-1MM, ALTERED FRACTURE ON PCE 15;
Comments : MED DARK GRAY (N4);
Phenocrysts: PLAGIOCLASE
Size(mm): TO 5
PYROXENE
Size(mm): TO 5
LARGE PHENOS, LIGHT GRAY, ANHEDRAL,
GLOMEROPORPHYRITIC CLOTS OF PLAG WITH LARGE PYXS;
Groundmass : PLAGIOCLASE
Size(mm): TO 1
MICROLATHS ARE DARK GRAY, PROBABLY GLASSY;
Replacement: CALCITE
PYRITE
FILLING IRREGULAR VEINS;
CHALCOPYRITE
IN VEINS POSSIBLY, BASED ON COLOR;
PYRRHOTITE
APPEARS TO BE THIS IN PCE 9;
UNIDENTIFIED
GRAY-BLACK MATERIAL ASSOCIATED WITH IRREGULAR
VEINS;
Leg : 16 Top/Bottom Interval(mm): 0/ 0 Analyst: Yeats, R.S.
Hole: 157 Sample Midpoint (m) : 434.10
Core: 49 Top of Core Depth (m) : 431.00
Sect: CC Top of Section Depth(m): 434.10
LITHOLOGY: BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : FINE-GRAINED, APPEARS TO BE GLOMEROPORPHYRITIC;
Structure : MASSIVE, CUT BY IRREGULAR VEINS 0.5 TO 2MM THICK,
RICH IN COARSE XTLINE CALCITE WITH OCCATIONAL CLOTS
OF COARSE-GRAINED PYRITE, SOME SULFIDE (MAYBE
CHALPYR);
Alteration : POSSIBLY ALTERED MAFICS, SMALL VERY DARK GRAY
AREAS 0.5-1MM;
Comments : MED DARK GRAY (N4);
Phenocrysts: PLAGIOCLASE
Size(mm): TO 5
PYROXENE
Size(mm): TO 5
LARGE PHENO, LIGHT GRAY, ANHEDRAL
GLOMEROPORPHYRITIC CLOTS OF PLAG WITH LARGE PYXS;
Groundmass : PLAGIOCLASE
Size(mm): TO 1
MICROLATHS ARE DARK GRAY, PROBABLY GLASSY;
Replacement: CALCITE
PYRITE
FILLING IRREGULAR VEINS;
CHALCOPYRITE
IN VEINS POSSIBLY, BASED ON COLOR;
UNIDENTIFIED
GRAY-BLACK MATERIAL ASSOCIATED WITH IRREGULAR
VEINS;
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