Leg : 29 Top/Bottom Interval(mm): 880/ 960 Describer: Ridley, W. Hole: 280A Top of Core Depth(m) : 519.00 Rock Type: IGNEOUS Core: 23 Sample Midpoint(m) : 519.92 Sect/Pc #: 1/ ROCK = BASALT PARTLY ALTERED; Texture: INTERGRANULAR-SUBOPHITIC* Groundmass - PLAGIOCLASE Morphology: LATHS CLINOPYROXENE Morphology: PLATES ORIGINAL TEXTURE PRESERVED IN FRESH PATCHES OF CPX PLATES ENCLOSING SMALL PLAG LATHS; Alteration - CHLORITE Replacing: CPX,PLAG PARTLY REPLACES PLAG; CALCITE Location: VEINS ROCK CUT BY VEINS OF PLATY CALCITE ASSOCIATED WITH EPIDOTE AND FIBROUS CHLORITE* Leg : 29 Top/Bottom Interval(mm): 370/ 410 Describer: Ridley, W. Hole: 280A Top of Core Depth(m) : 519.00 Rock Type: IGNEOUS Core: 23 Sample Midpoint(m) : 523.89 Sect/Pc #: 4/ ROCK = BASALT; Texture: RADIATE TO SPHERULITIC,FINE-GRAINED* Phenocrysts- PLAGIOCLASE Morphology: LATHS RARE,ZONED,SHOWS PATCHY REPLACEMENT BY SERICITE* Groundmass - CLINOPYROXENE Morphology: DENDRITIC NOW ALTERED FORMS DENDRITIC XTLS WITH INTERSTITIAL EPIDOTE; OLIVINE OCCASIONAL CLOTS OF SMALL ALTERED OL GRAINS* Alteration - EPIDOTE Replacing: GLASS LARGE AREAS PROBABLY REFLECTING ORIGINAL GLASSY AREAS; CALCITE Location: VEINS ROCK CUT BY VEINS OF PLATY CALCITE ASSOCIATED WITH FIBROUS ANTIGORITE AND LENTICULAR PATCHES OF SERPENTINE* Leg : 29 Top/Bottom Interval(mm): 1100/1180 Describer: Ridley, W. Hole: 280A Top of Core Depth(m) : 519.00 Rock Type: IGNEOUS Core: 23 Sample Midpoint(m) : 524.64 Sect/Pc #: 4/ ROCK = PLAG-OL PHYRIC BASALT; Texture: FINE-GRAINED,PHYRIC,INTERSERTAL* Phenocrysts- PLAGIOCLASE Size(mm): TO 2 Morphology: LATH-LIKE OLIVINE Size(mm): <1 REPLACED BY SERPENTINE* Groundmass - PLAGIOCLASE Morphology: LATHS SMALL,ALSO PRESENT ARE RARE CORRODED FRAGMENTS OF PLAG XENOCRYSTS UP TO 1MM LONG* CLINOPYROXENE PALE BROWN TO COLORLESS CPX INTERGRANULAR TO SMALL PLAG LATHS; OLIVINE SMALL SERPENTINIZED GRAINS; TITANOMAGNETITE GROUNDMASS HAS AN AVERAGE GRAIN SIZE OF .05-.1MM* Alteration - CHLORITE SCATTERED AREAS OF ALTERATION CONTAINING MAINLY CHLORITE* |
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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