Leg : 70 Top/Bottom Interval(mm): 0/ 320 Analyst: Schrader, E.L. Hole: 506G Sample Midpoint (m) : 29.82 Core: 2 Top of Core Depth (m) : 29.50 Sect: 1 Top of Section Depth(m): 29.50 LITHOLOGY: APHYRIC BASALT; Piece No. : PCE 1 (2-5), 3 (17-22), 4 (24-32); Texture : APHYRIC, PCE 1 IS MEDIUM-GRAINED, PCE 3 IS FINE- GRAINED, PCE 4 IS FINE-GRAINED TO HOLOXTALLINE, CHILLED MARGIN PRESENT IN PCE 4; Alteration : FRESH IN PCE 1 DUST OF GREEN AND BLUE SECONDARY MINERAL (CLAY?) COATING UNCUT SURFACES, IN PCE 3 UNCUT SURFACES ARE COATED WITH DUST OF SECONDARY CLAY MINERAL; Comments : CHILLED MARGIN APPEARS TO BE THE BOTTOM OF A COOLING UNIT (UNIT 1?); Vesicles : Size(mm): <0.5 Percent: IN PCE 1 PINPOINT VESICLES EVENLY DISTRIBUTED AND EMPTY; Location: Filling: CLAY IN PCE 3 VESICLES ARE SCATTERED THROUGHOUT, VESICLES NEAR RIMS ARE FILLED WITH LIGHT BLUE CLAY-INTERIOR VESICLES ARE EMPTY; Size(mm): 0.5-1 Percent: Location: Filling: CLAY IN PCE 4 VESICLES ARE SCATTERED THROUGHOUT, VESICLES NEAREST QUENCHED MARGIN ARE FILLED WITH BLUE CLAY, INTERIOR VESICLES ARE MOSTLY CLEAN; Replacement: CLAY MINERALS BLUE; Leg : 70 Top/Bottom Interval(mm): 180/ 250 Analyst: Schrader, E.L. Hole: 506G Sample Midpoint (m) : 29.75 Core: 2 Top of Core Depth (m) : 29.50 Sect: 1 Top of Section Depth(m): 29.68 LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT; Piece No. : PCE 2 (18-25); Texture : VERY SPARSELY PHYRIC, MEDIUM-GRAINED; Alteration : FRESH; Comments : COOLING UNIT 1; Vesicles : Size(mm): <0.5-1 Percent: SCATTERED THROUGHOUT, VESICLES GRADE TO VUGS, 2 VESICLES CONTAIN VERY GLASSY SECONDARY MINERALS OR PRIMARY SILICATES CRYSTALLIZED WITHIN, REMAINING VESICLES CLEAN; Phenocrysts: OLIVINE PLAGIOCLASE Replacement: SILICATE CRYSTALLIZED IN VESICLES; Leg : 70 Top/Bottom Interval(mm): 360/ 610 Analyst: Schrader, E.L. Hole: 506G Sample Midpoint (m) : 30.11 Core: 2 Top of Core Depth (m) : 29.50 Sect: 1 Top of Section Depth(m): 29.86 LITHOLOGY: APHYRIC BASALT; Piece No. : PCE 5 (36-44), 7 (55-61); Texture : APHYRIC, PCE 5 IS FINE-GRAINED, PCE 7 IS MEDIUM- GRAINED, ON PCE 7 1MM RIND ON ONE SIDE; Structure : CRACK IN PCE 5-FRESH; Alteration : FRESH IN PCE 7 MINOR COATING OF SECONDARY CLAY ON ONE EXTERIOR SURFACE; Comments : COOLING UNIT 2 (BART); Vesicles : Size(mm): 0.5-1 Percent: Location: Filling: SILICATES IN PCE 5 SCATTERED VESICLES ARE EMPTY EXCEPT FOR PRIMARY SILICATES, IN PCE 7 PINPOINT VESICLES ARE SCATTERED THROUGHOUT; Leg : 70 Top/Bottom Interval(mm): 470/ 700 Analyst: Schrader, E.L. Hole: 506G Sample Midpoint (m) : 30.20 Core: 2 Top of Core Depth (m) : 29.50 Sect: 1 Top of Section Depth(m): 29.97 LITHOLOGY: PLAG SPARSELY PHYRIC BASALT; Piece No. : PCE 6 (47-52), 8 (63-70); Texture : VERY SPARSELY PHYRIC, PCE 6 IS FINE-GRAINED, PCE 7 IS VERY FINE-GRAINED; Alteration : VERY THIN ALTERATION RIND IS PRESENT IN PCE 6, FAINT ALTERATION RIND IS PRESENT IN PCE 8; Comments : COOLING UNIT 2; Vesicles : Location: Filling: CLAY IN PCE 6 VESICLES NEAR RIM COATED WITH SECONDARY BLUE CLAY, IN PCE 8 SOME VESICLES IN RIND COATED BY SECONDARY CLAY MINERAL, SOME VESICLES ON EXPOSED SURFACES FILLED WITH BLUE CLAY; Replacement: CLAY MINERALS BLUE CLAY IN VESICLES; Leg : 70 Top/Bottom Interval(mm): 720/1270 Analyst: Schrader, E.L. Hole: 506G Sample Midpoint (m) : 30.77 Core: 2 Top of Core Depth (m) : 29.50 Sect: 1 Top of Section Depth(m): 30.22 LITHOLOGY: PLAG SPARSELY PHYRIC BASALT; Piece No. : PCE 9 (72-80), 11 (93-98), 13 (106-111), 15 (120-126); Texture : VERY SPARSELY PHYRIC, PCES 9+11 ARE VERY FINE- GRAINED, PCE 13 IS FINE-GRAINED, PCE 15 IS MEDIUM- GRAINED; Alteration : FRESH PCE 9 IS FRESH, UNCUT SURFACE PARTLY COATED WITH SECONDARY BLUE CLAY MINERAL; Comments : COOLING UNIT 3?; Vesicles : Size(mm): 0.5 Percent: ONE 0.5MM VESICLE IN PCE 9; Size(mm): <0.1 Percent: Location: Filling: CLAY MANY LITTLE VESICLES PARTLY COATED ON THE INSIDE WITH BLUE-GREEN CLAY; Size(mm): 0.5 Percent: PCE 11 IS VESICULAR AND EMPTY; Location: Filling: CLAY IN PCE 17 VESICLES PARTLY COATED WITH BLUE CLAYS AND COATED OR FILLED WITH BROWNISH RED MATERIALS, PCE 15 IS VESICULAR-VESICLES ARE ALMOST EMPTY, TWO VESICLES ARE FILLED WITH GLASSY MINERALS; Phenocrysts: PLAGIOCLASE Replacement: CLAY MINERALS BLUE CLAY FILLING VESICLES; Leg : 70 Top/Bottom Interval(mm): 820/1170 Analyst: Schrader, E.L. Hole: 506G Sample Midpoint (m) : 30.67 Core: 2 Top of Core Depth (m) : 29.50 Sect: 1 Top of Section Depth(m): 30.32 LITHOLOGY: APHYRIC BASALT; Piece No. : PCE 10 (82-90), 12 (100-103), 14 (113-117); Texture : APHYRIC, PCE 10 IS VERY FINE-GRAINED, PCE 12 IS FINE-GRAINED, PCE 14 IS MEDIUM-GRAINED; Alteration : FRESH PCE 14 IS FRESH, ALTERATION RIM IN PCE 10; Comments : COOLING UNIT 3; Vesicles : Size(mm): 0.2 Percent: Location: Filling: CALCITE,CLAY IN PCE 10 ONE VESICLE FILLED WITH CALCITE, PIN POINT VESICLES DISTRIBUTED-EMPTY IN FRESH PART, VESICLES IN ALTERATION RIM PARTLY FILLED WITH BLUE CLAY; Location: Filling: CLAY PCE 12 IS VESICULAR, COATED WITH LIGHT BLUE TO DARK GREEN CLAYS AND BROWNISH RED MATERIAL, IN PCE 14 PINPOINT VESICLES EMPTY; Replacement: CALCITE CLAY MINERALS |
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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