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; |
Cite as: Deep Sea Drilling Project (1989): Archive of Core and Site/Hole Data and Photographs from the Deep Sea Drilling Project (DSDP). National Geophysical Data Center, NOAA. doi:10.7289/V54M92G2 [access date]
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