Leg : 63 Top/Bottom Interval(mm): 750/ 780 Describer: Shibata, T. Hole: 470 Top of Core Depth(m) : 161.50 Rock Type: IGNEOUS Core: 18 Sample Midpoint(m) : 163.76 Sect/Pc #: 2/PCE 1 ROCK = PLAG-OL SPARSELY PHYRIC BASALT; Texture: SPARSELY PORPHYRITIC,SUBVARIOLITIC GROUNDMASS; Where sampled: GLASSY MARGIN* Phenocrysts- OLIVINE ( 1%) Size(mm): 0.2-0.3 Morphology: EUHEDRAL PSEUDOMORPHED--COMPLETELY ALTERED TO SERPENTINE + CLAY,MICROPHENOS; PLAGIOCLASE ( 3%) Size(mm): 0.2-1.0 Morphology: EUHEDRAL-SUBHEDRAL PHENOS + MICROPHENOS; SPINEL ( TR%) Morphology: SUBHEDRAL BROWN* Groundmass - PLAGIOCLASE ( 30%) Morphology: SKELETAL,NEEDLES NEEDLE DIMENSIONS ARE <0.01 MM X 0.6 MM; CLINOPYROXENE ( 30%) Morphology: FEATHERY,PLUMOSE OPAQUE MINERALS ( 7%) MICROCRYST GROUNDMASS ( 25%) Alteration - CARBONATE Location: VESICLES, Location: CRACKS CLAY MINERALS Location: VESICLES, Replacing: OL PHENOS Location: CRACKS BROWNISH GREEN; SERPENTINITE Replacing: OL PHENOS Vesicles - Size(mm): 0.2-0.4 Percent: 5 Filling: CLAY.MIN Shape: OVAL FILLING IS BROWNISH GREEN CLAY* Leg : 63 Top/Bottom Interval(mm): 250/ 270 Describer: Shibata, T. Hole: 470 Top of Core Depth(m) : 161.50 Rock Type: IGNEOUS Core: 18 Sample Midpoint(m) : 164.76 Sect/Pc #: 3/PCE 1D ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,GLOMEROPORPHYRITIC, INTERGRANULAR-INTERSERTAL GROUNDMASS; Where sampled: PILLOW INTERIOR* Phenocrysts- OLIVINE ( 2%) Size(mm): 0.3-0.5 Morphology: EUHEDRAL PSEUDOMORPHS--COMPLETELY ALTERED TO IDDINGSITE + CALCITE,MICROPHENOS; PLAGIOCLASE ( 5%) Size(mm): 0.3-1.0 Morphology: EUHEDRAL PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE ( 30%) Size(mm): 0.05-0.2 Morphology: SKELETAL,EUHEDRAL CLINOPYROXENE ( 40%) Size(mm): 0.01-0.2 Morphology: SKELETAL,FEATHERY,EQUANT, Morphology: DENDRITIC MICROCRYST GROUNDMASS ( 10%) OPAQUE MINERALS ( 10%) Size(mm): 0.01-0.1 Morphology: ACICULAR-EQUANT Alteration - CALCITE Replacing: OL PHENOS IDDINGSITE Replacing: OL PHENOS CLAY MINERALS Location: VESICLES Vesicles - Size(mm): 0.2-0.4 Percent: 3 Filling: CLAY.MIN Shape: CIRCULAR FILLING IS REDDISH BROWN CLAY* |
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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