Sample: 81AWs 266


Sample ID: 81AWs 266 [1]
Station ID: 81AWs 266
AT Num:
Volcano: Kejulik
Possible source:
Eruption:
Collector: Wilson, F. H.
Date sampled: 1981-01-01
Sample type 1: Lava
Color: Light-bluish-gray
Final unit:
Text Description: Karluk D-6. Kejulik Mountains. Light-bluish-gray (5 B 7/1), vesicular, porphyritic basalt (S; basaltic andesite, G) dike. Intrudes young lahars and volcanic rubble. Major phases are plagioclase (An 75), sparse orthopyroxene (hypersthene), rare clinopyroxene, and glass. Plagioclase and pyroxene phenocrysts in a fine-grained to glassy groundmass. Possibly very fine-grained, green, non-pleochroic amphibole in groundmass.
Sample Location:

References Cited

[1] Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska, 1992

Wilson, F.H., and Shew, Nora, 1992, Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1539-E, 34 p., 2 sheets, scale 1:250,000.