Leg : 69 Top/Bottom Interval(mm): 20/1450 Analyst: Pertsev, N.
Hole: 504A Sample Midpoint (m) : 266.45
Core: 6 Top of Core Depth (m) : 265.00
Sect: 1 Top of Section Depth(m): 265.02
LITHOLOGY: PLAG-OL-CPX SPARSELY MICROPHYRIC BASALT;
Piece No. : PCES 3 (2-10), 4 (9-15), 5 (15-18), 6 (20-30),
7 (30-36), 8 (36-45), 9 (39-44), 10 (44-50),
11 (50-53), 12 (53-62), 13 (62-69), 14 (69-74),
15 (74-84), 16 (77-80), 17 (81-85), 18 (85-89),
19 (90-95), 20 (93-98), 21 (100-105), 22 (108-114),
23 (116-123), 24 (123-130), 25 (131-134),
26 (140-145);
Texture : SPARSELY MICROPHYRIC BASALT,UNIFORM THROUGHOUT
SECTION,NO GLASSY MARGINS RECOVERED;
Structure : CALCITE VEINS TO 3MM ACROSS ARE IN PCES 6-7+24,THIN
GREEN CALCITE VEINS CUT CALCITE VEINS IN PCE 7,
CRACKS ALSO FILLED WITH CARB.UNSPEC,SMEC;
Alteration : MOD
OL PHENOS REPLACED WITH LIGHT-GREEN SMEC;
Vesicles : Size(mm): TO 3 Percent: <1
Location: 1 Filling: SMEC,CALCITE
Phenocrysts: PLAGIOCLASE ( TO 5%)
Size(mm): <3
OLIVINE ( TO 5%)
Size(mm): <3
REPLACED BY SMEC;
CLINOPYROXENE ( TO 5%)
Size(mm): <3
ALL ARE MICROPHENOS;
Replacement: CALCITE
SMECTITE
Minerals Replaced: OL
LIGHT GREEN;
CARBONATE
UNSPEC;
Leg : 69 Top/Bottom Interval(mm): 20/1500 Analyst: Pertsev, N.
Hole: 504A Sample Midpoint (m) : 268.00
Core: 6 Top of Core Depth (m) : 265.00
Sect: 2 Top of Section Depth(m): 266.52
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 27 (2-7), 28 (8-13), 29 (14-17), 30 (18-26),
31 (28-31), 32 (35-42), 33 (42-36), 34 (48-53),
35 (56-66), 36 (65-73), 37 (73-87), 38 (79-83),
39 (85-88), 40 (91-102), 41 (102-108), 42 (108-113),
43 (113-117), 44 (119-127), 45 (129-136),
46 (137-147);
Texture : SPARSELY PHYRIC BASALT,NO GLASSY MARGINS PRESENT,
RATHER UNIFORM;
Structure : CALCITE VEINS ABSENT,THIN SMEC &/OR CELAD VEINS
OCCUR THROUGHOUT SECTION,PYR-SMEC VEINS &
DISSEMINATED SMALL GRAINS OF PYR;
Alteration : MOD
OL ALTERED INTO GREEN & ORANGE CELAD(?) & LIGHT
GREEN SMEC;
Vesicles : Size(mm): TO 1 Percent: <4
Phenocrysts: PLAGIOCLASE ( TO 5%)
Size(mm): <3
OLIVINE ( TO 5%)
Size(mm): <3
ALTERED INTO GREEN & ORANGE CELAD(?) & LIGHT GREEN
SMEC;
CLINOPYROXENE ( 0%)
CPX APPEARS TO BE ABSENT;
Replacement: CALCITE ( 0%)
SMECTITE
Minerals Replaced: OL
CELADONITE
Minerals Replaced: OL
Leg : 69 Top/Bottom Interval(mm): 20/1100 Analyst: Pertsev, N.
Hole: 504A Sample Midpoint (m) : 269.10
Core: 6 Top of Core Depth (m) : 265.00
Sect: 3 Top of Section Depth(m): 268.02
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCES 47 (2-7), 48 (10-17), 49 (19-23), 50 (25-35),
51 (30-41), 52 (41-49), 53 (50-56), 54 (58-67),
55 (70-77), 56 (82-87), 57 (90-94), 58 (98-102),
59 (103-109);
Texture : SPARSELY PHYRIC BASALT,GLASSY MARGINS ABSENT;
Structure : CRACKS FILLED WITH GREEN SMEC OR CELAD & LOCALLY
WITH YELLOW & ORANGE CELAD(?),PCES 47+54 THERE ARE
SMALL IRREGULAR PATCHES OR CAVITIES(TO 7MM) FILLED
WITH BRIGHT GREEN CELAD(RIMS) & LIGHT GREEN OR
YELLOW CORES;
Alteration : MOD
RARE GRAINS OF PYR ON DRILLED SURFACES ARE COVERED
WITH LIMONITE HALO;
Vesicles : Size(mm): TO 1 Percent: <4
Phenocrysts: PLAGIOCLASE ( TO 5%)
Size(mm): <3
OLIVINE ( TO 5%)
Size(mm): <3
PYROXENE ( 0%)
PYX APPEARS TO BE ABSENT;
Replacement: CELADONITE
BRIGHT GREEN,YELLOW & ORANGE;
Leg : 69 Top/Bottom Interval(mm): 30/1500 Analyst: Pertsev, N.
Hole: 504A Sample Midpoint (m) : 274.50
Core: 7 Top of Core Depth (m) : 273.00
Sect: 1 Top of Section Depth(m): 273.03
LITHOLOGY: PLAG-OL SPARSELY PHYRIC TO APHYRIC BASALT;
Piece No. : PCES 60 (3-9), 61 (10-19), 62 (22-27), 63 (29-37),
64 (38-48), 65 (51-60), 66 (63-67), 67 (71-79),
68 (79-86), 69 (87-95), 70 (97-100), 71 (104-107),
72 (108-115), 73 (117-122), 74 (127-131),
75 (133-137), 76 (140-147);
Texture : SPARSELY PHYRIC TO APHYRIC BASALT,ROCK IS UNIFORM,
PCES 73+75-76 HAVE CHILLED MARGINS,ZONES NEAR GLASSY
MARGINS ARE FINE-GRAINED & PLAG-CPX MICROPHYRIC;
Alteration : MOD
PCES 60-61+65,PATCHES(TO 8MM) WHICH CONSIST OF
CELAD & SMEC FROM DARK GREEN TO YELLOW & ORANGE,
ZONE NEAR GLASSY MARGINS IN PCES 73+75-76 IS
STRONGLY ALTERED TO SMEC;
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE ( 3-5%)
Size(mm): TO 3
ALSO PRESENT AS SMALL PHENOS IN CHILLED MARGINS OF
PCES 73+75-76;
OLIVINE ( 3-5%)
Size(mm): TO 3
CLINOPYROXENE
SMALL PHENOS PRESENT IN CHILLED MARGINS OF PCES
73+75-76;
Replacement: CELADONITE
SMECTITE
ALT.MINS RANGE FROM DARK GREEN TO YELLOW & ORANGE;
Leg : 69 Top/Bottom Interval(mm): 20/1400 Analyst: Pertsev, N.
Hole: 504A Sample Midpoint (m) : 275.90
Core: 7 Top of Core Depth (m) : 273.00
Sect: 2 Top of Section Depth(m): 274.52
LITHOLOGY: PILLOW BASALT;
Piece No. : PCES 77 (2-8), 78 (10-15), 79 (19-30), 80 (32-47),
81 (50-55), 82 (59-62), 83 (66-70), 84 (73-82),
85 (85-90), 86 (94-102), 87 (105-110), 88 (113-122),
89 (123-127), 90 (132-140);
Texture : LAST PART OF SECTION IS APHYRIC BASALT FLOW,UNIFORM,
MICROLITIC,FINE-GRAINED;
Structure : CRACKS FILLED WITH LIGHT GREEN SMEC IN CENTRAL PART
WITH MORE DARK GREEN BORDERS;
Alteration : OL CONVERTED INTO LIGHT GREEN SMEC,OXIDATION
OBSERVED IN SOME VEINS,BORDERS OF VEINS ARE ORANGE
OR RED THEN MORE YELLOW OUTSIDE & BECOMING DARK
GREEN,OXIDATION ZONE WIDTH IS UP TO 1CM ON BOTH
SIDES OF VEINS;
Vesicles : Size(mm): Percent: RARE
ABSENT TO RARE,VERY SMALL WHEN PRESENT;
Phenocrysts: OLIVINE
CONVERTED TO SMEC;
Replacement: SMECTITE
Minerals Replaced: OL
LIGHT GREEN;
UNIDENTIFIED
ORANGE OR RED,YELLOW;
|
