Leg : 69 Top/Bottom Interval(mm): 100/ 120 Describer: Pertsev, N. Hole: 505 Top of Core Depth(m) : 233.50 Rock Type: IGNEOUS Core: 25 Sample Midpoint(m) : 233.61 Sect/Pc #: 1/PCE 92 ROCK = PLAG-OL-CPX PHYRIC BASALT; Texture: PHYRIC,MICROLITIC,VARIOLITIC* Phenocrysts- OLIVINE Size(mm): 3-10 Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL OLIVINE ( 5-10%) Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL FRESH AND ALTERED ONLY ALONG RARE GRAINS,PERCENT IS FOR TOTAL OL PHENOS; PLAGIOCLASE Size(mm): 3-10 Morphology: EUHEDRAL,SUBHEDRAL PLAGIOCLASE Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL PLAGIOCLASE Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL HUGE PLAG PHENOS CONTAIN GLASSY INCLUSIONS AND ROUNDED XTLS OF OL; CLINOPYROXENE ( TR%) Size(mm): 1-3 Morphology: SUBHEDRAL PYX XTLS ARE RARE,ROUNDED,RESORBED AND SEEM TO BE XENOCRYSTS* Groundmass - PLAGIOCLASE ( >40%) Morphology: EUHEDRAL,SUBHEDRAL PERCENT IS FOR TOTAL PLAG IN SECTION; SPHERULITIC MESOSTASIS (20-40%) TITANOMAGNETITE ( 1-5%) Morphology: EUHEDRAL,SUBHEDRAL SUBMICROSCOPIC AND DISSEMINATED EUHEDRAL AND SUBHEDRAL GRAINS, CR-SPINEL,PYRITE AND TITANO-MAGN ARE <1% OF SLIDE; CHROME SPINEL ( TR%) Morphology: EUHEDRAL SPINEL GRAINS(SEVERAL) ARE BOTH IN PLAG PHENOS AND GROUNDMASS,CR-SPINEL AS LARGE EUHEDRAL GRAINS IN PLAG AND MESOSTASIS,THEY ARE VERMICULAR AND SKELETAL* Alteration - SMECTITE Location: VEINS Replacing: OL Leg : 69 Top/Bottom Interval(mm): 280/ 300 Describer: Noack, Y. Hole: 505 Top of Core Depth(m) : 233.50 Rock Type: IGNEOUS Core: 25 Sample Midpoint(m) : 233.79 Sect/Pc #: 1/PCE 92 ROCK = PLAG-OL-CPX PHYRIC BASALT; Texture: PHYRIC,OPHITIC; Where sampled: FLOW INTERIOR* Phenocrysts- OLIVINE Size(mm): 1-3 OLIVINE ( 5-10%) Size(mm): .3-1 PERCENT IS FOR TOTAL OL PHENOS,FRESH RELICS OF OL, OL WITH SMECTITE RIMS(ALTERATION 50%),PHENOS OF OL-CPX-PLAG IN A MICROLITIC MESOSTASIS(PLAG-CPX); PLAGIOCLASE Size(mm): 3-10 PLAGIOCLASE Size(mm): 1-3 PLAGIOCLASE Size(mm): .3-1 CLINOPYROXENE Size(mm): 1-3 CLINOPYROXENE Size(mm): .3-1 Groundmass - PLAGIOCLASE Size(mm): .1-.3 PLAGIOCLASE Size(mm): .03-.1 PLAGIOCLASE (20-40%) Size(mm): .01-.03 PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP AN50-70* Alteration - SMECTITE Replacing: OL RARE VESICLES,LIGHT YELLOW WITH GOLD YELLOW RIM* Leg : 69 Top/Bottom Interval(mm): 330/ 360 Describer: Noack, Y. Hole: 505 Top of Core Depth(m) : 238.00 Rock Type: IGNEOUS Core: 26 Sample Midpoint(m) : 238.35 Sect/Pc #: 1/PCE 97 ROCK = PLAG-OL-CPX PHYRIC BASALT; Texture: PHYRIC,OPHITIC; Where sampled: FLOW INTERIOR* Phenocrysts- OLIVINE Size(mm): 1-3 OLIVINE Size(mm): .3-1 PLAGIOCLASE Size(mm): 1-3 PLAGIOCLASE Size(mm): .3-1 CLINOPYROXENE Size(mm): .3-1 Groundmass - OLIVINE ( 5-10%) Size(mm): .1-.3 PERCENT IS FOR TOTAL OL IN SECTION,FRESH OL WITH SMECTITES IN CRACKS; PLAGIOCLASE Size(mm): .1-.3 PLAGIOCLASE Size(mm): .03-.1 PLAGIOCLASE ( >40%) Size(mm): .01-.03 PERCENT IS FOR TOTAL PLAG IN SECTION* Alteration - SMECTITE Location: VESICLES Replacing: OL CRACKS AND SMALL VESICLES FILLED WITH YELLOW-RED MECTITES* Vesicles - Size(mm): .03-.1 Percent: .5-1 Filling: SMECTITE Leg : 69 Top/Bottom Interval(mm): 330/ 360 Describer: Pertsev, N. Hole: 505 Top of Core Depth(m) : 238.00 Rock Type: IGNEOUS Core: 26 Sample Midpoint(m) : 238.35 Sect/Pc #: 1/PCE 97 ROCK = PLAG-OL-CPX-CR.SPINEL PHYRIC BASALT; Texture: PHYRIC,VARIOLITIC* Phenocrysts- OLIVINE Size(mm): 3-10 Morphology: EUHEDRAL OLIVINE ( 5-10%) Size(mm): 1-3 Morphology: EUHEDRAL PERCENT IS FOR TOTAL OL PHENOS,FRESH-ALTERED ONLY ALONG RARE CRACKS; PLAGIOCLASE Size(mm): 3-10 Morphology: EUHEDRAL PLAGIOCLASE Size(mm): 1-3 Morphology: EUHEDRAL CLINOPYROXENE Size(mm): 3-10 Morphology: SUBHEDRAL CLINOPYROXENE ( TR%) Size(mm): 1-3 Morphology: SUBHEDRAL PERCENT IS FOR TOTAL CPX PHENOS,CPX XTLS ARE VERY RARE AND ROUNDED,RESORBED,THEY SEEM TO BE XENOCRYSTS; CHROME SPINEL ( TR%) Size(mm): .3-1 Morphology: EUHEDRAL LARGE EUHEDRAL CR-SPINEL XTLS(SMALL PHENOS IN GROUNDMASS-SEVERAL GRAINS)WITHIN OL AND PLAG XTLS (VERMICULAR AND SKELETAL)* Groundmass - PLAGIOCLASE (20-40%) Size(mm): .1-.3 Morphology: EUHEDRAL PERCENT IS FOR TOTAL PLAG IN SECTION; SPHERULITIC MESOSTASIS ( >40%) PYRITE ( 0%) TITANOMAGNETITE ( 1-5%) Size(mm): .03-.1 SUBMICROSCOPIC EUHEDRAL TITANO-MAGN IN THE MESOSTASIS,CR-SPINEL AND TITANO-MAGN ARE <1% OF SLIDE,CR-SPINEL/TITANO-MAGN=9/1* Alteration - SMECTITE Location: VEINS, Replacing: OL Location: VESICLES BROWN* Vesicles - Size(mm): .3-1 Percent: TR Filling: SMECTITE Shape: ROUND |
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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