Sample: 81ARj 38a


Sample ID: 81ARj 38a [1]
Station ID: 81ARj 38
AT Num:
Volcano: Kialagvik
Possible source:
Eruption:
Collector: Riehle, J. R.
Date sampled: 1981-01-01
Sample type 1: Other
Color:
Final unit:
Text Description: Fine-grained, flow-foliated, porphyritic dacite clast in ash flow. Contains phenocrysts of zoned plagioclase (An 60) and quartz and lithic fragments. Lithic fragments are plagioclase and clinopyroxene or only plagioclase; no mafic minerals are present among the phenocrysts or in the groundmass. Aggregates of very fine grained opaque minerals in pseudomorphs after hornblende (?)
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.