Leg : 16 Top/Bottom Interval(mm): / Describer: Yeats, R.S. Hole: 161A Top of Core Depth(m) : 244.00 Rock Type: IGNEOUS Core: 15 Sample Midpoint(m) : 244.10 Sect/Pc #: CC/ ROCK = PLAG-OL-CPX MICROPHYRIC BASALT SOURCE ISIR, SEE ALSO P. 305, ALTERED; Texture: FINE-GRAINED,GLASSY,MICROPHYRIC* Phenocrysts- PLAGIOCLASE Size(mm): 0.05-1.25 Morphology: LATHS APPROX COMP AN68,RARE OSCILLATORY ZONING OR NORMAL ZONING (CALCIC LABRADORITE),ALSO AS MODERATELY ALIGNED THIN LABRADORITE LATHS 100-700 MICRONS LONG; AUGITE Size(mm): 0.05-0.25 Morphology: ANHEDRAL GRAINS,VARIOLITIC Morphology: SHEAFS 2VZ NEAR 60 DEGREES OCCURRING AS VARIOLITIC SHEAFS OR AS ANHEDRAL GRAINS TO 200 MICRONS ACROSS ASSOCIATED WITH LABRADORITE IN PHENOCRYST CLUSTERS,Z-C =40,Z-X=0.015; OLIVINE Size(mm): 0.1-0.75 Morphology: EUHEDRAL NEARLY COMPLETELY ALTERED* Groundmass - GROUNDMASS Morphology: VARIOLITIC INCLUDES PYX+MAGN+CHLOROPHAEITE,DEVITRIFIED; OPAQUE MINERALS SHORT OCTAHEDRAL CHAINS,INDIVIDUAL OCTAHEDRA* Alteration - IDDINGSITE Replacing: OL SERPENTINITE Replacing: OL Vesicles - Size(mm): 0.1-0.3 Filling: FINE-GRAINED, Filling: GLASSY BASALT, Filling: SERP,IDDINGS |
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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