Leg : 65 Top/Bottom Interval(mm): 50/ 70 Describer: Robinson, P. Hole: 484A Top of Core Depth(m) : 55.50 Rock Type: IGNEOUS Core: 7 Sample Midpoint(m) : 55.56 Sect/Pc #: 1/PCE 1 ROCK = PLAG SPARSELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( TR%) Size(mm): 0.5 Morphology: SUBHEDRAL FRESH,HIGH 2V,ASSOCIATED WITH PLAG,SOME COULD BE CPX; PLAGIOCLASE ( 1-2%) Size(mm): 0.5-2.5 Morphology: SUBHEDRAL,PRISMS OFTEN STRONGLY ZONED,FRESH* Groundmass - OLIVINE ( TR%) Size(mm): 0.05 Morphology: SUBHEDRAL MINUTE XTLS WITH HIGH BIREFRINGENCE,OCTAHEDRAL SHAPE,PERCENTAGE QUESTIONABLE; MICROCRYST GROUNDMASS (97-98%) INCLUDES OL + CPX + MAGN + PLAG,REMAINDER OF SLIDE IS A VERY FINE GRAINED QUENCHED MIXTURE OF OL + CPX + MINUTE MAGN + PLAG IN RADIAL SHEAF-LIKE AGGREGATES* Vesicles - Size(mm): 0.3-0.5 Percent: <1 Shape: ROUND SOME SEGREGATION VESICLES,VESICLES ARE OPEN; Leg : 65 Top/Bottom Interval(mm): 50/ 70 Describer: Schmincke, H. Hole: 484A Top of Core Depth(m) : 55.50 Rock Type: IGNEOUS Core: 7 Sample Midpoint(m) : 55.56 Sect/Pc #: 1/PCE 1 ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( <1%) Size(mm): <2 IN GLOMEROCRYSTS WITH PLAG; PLAGIOCLASE ( 2-3%) Size(mm): 1-3 Morphology: ANHEDRAL,PARTLY SKELETAL IN GLOMEROCRYSTS WITH OL; SPINEL ( TR%) Morphology: EUHEDRAL IDENTITY QUESTIONABLE* Groundmass - OLIVINE ( <1%) Morphology: SKELETAL PLAGIOCLASE ( 5-7%) Size(mm): 0.5 Morphology: SKELETAL EXCELLENT SKELETAL; CLINOPYROXENE Morphology: SKELETAL Alteration - SULFIDE PERVASIVE ON ONE SIDE* Vesicles - Size(mm): <0.5 Percent: <1 Shape: ROUND SOME SEGREGATION VESICLES* |
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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