Leg : 67 Top/Bottom Interval(mm): 0/ 440 Analyst: Cowan, D.S. Hole: 499C Sample Midpoint (m) : 260.44 Core: 1 Top of Core Depth (m) : 260.00 Sect: 1 Top of Section Depth(m): 260.00 LITHOLOGY: PLAG-OL PHYRIC BASALT; Piece No. : PCES 1 (0-4), 2 (6-8), 3 (15-20), 4 (24-26), 5 (31-35), 6 (37-44); Texture : MEDIUM GRAINED, PHYRIC, PCES(3 & 5 & 6) SUGGESTION OF WEATHERING RINDS DEVELOPED ON PARTS OF PCES; Alteration : MOD OL PHENOCRYSTS COMPLETELY ALTERED TO SOFT BROWN CLAY; Comments : ROCKS WERE PULLED FROM CORE CATCHER IN PART SO NO GREAT SIGNIFICANCE SHOULD BE ATTACHED TO ORDER IN WHICH NOW FOUND- ORDER IS MOST LIKELY IMMATERIAL HERE SINCE WEATHERED EXTERIOR OF ROCKS SUGGEST THEY ARE A SUBMARINE TALUS, DARK GREY BASALT; Phenocrysts: OLIVINE ( 5%) Size(mm): 1-3 NOW COMPLETELY ALTERED TO ORANGE BROWN CLAY; PLAGIOCLASE ( 20%) Size(mm): TO 5 PCES(3 & 5 & 6) ON THE WEATHERED RINDS THE GLOMEROPHENOCRYSTS ARE LIGHTER AND MORE EVIDENT THAN IN THE FRESHER CORES; Replacement: CLAY CLAY IS SOFT BROWN; Leg : 67 Top/Bottom Interval(mm): 460/ 600 Analyst: Cowan, D.S. Hole: 499C Sample Midpoint (m) : 260.60 Core: 1 Top of Core Depth (m) : 260.00 Sect: 1 Top of Section Depth(m): 260.46 LITHOLOGY: APHYRIC WEATHERED BASALT; Piece No. : PCES 7 (46-51), 8 (54-56); Texture : PCES 7 & 8 ARE SMOOTHER AND SUBROUNDED, WEATHERING RINDS ARE WELL DEVELOPED SURROUNDING DARKER GREY CORES, THE PCES ARE APHYRIC AND APHANITIC; Alteration : EXTENSIVELY; Comments : PCES 7 & 8 HAVE PALE YELLOWISH-GREY EXTERIORS; Replacement: PYRITE TINY PYRITE GRAINS ARE ARE ABUNDANT AND DISSEMINATED THROUGHOUT; |
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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