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Sample: 90ADg-3

Sample ID: 90ADg-3 [1]
Station ID: 90ADg-3
AT Num:
Volcano: Churchill, Mt
Possible source:
Eruption:
Collector: McGimsey, R. G.
Date sampled: 1990-00-00
Sample type 1: Lava
Color:
Final unit:
Text Description: Summit lava; Flow-banded dacite that underlies tephra. Pyroxene-bearing, hornblende dacite, mineralogically distinct from the tephra. Plagioclase from the dacite yielded a K/Ar date of 119 +/- 17 ka (N. Shew, written communication, 1991).
Sample Location:
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Red (Warning)
Orange (Watch)
Yellow (Advisory)
Green (Normal)
Uninstrumented

30 km
20 mi
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References Cited

[1] Mount Churchill, Alaska: source of the late Holocene White River Ash, 1995

Richter, D. H., Preece, S. J., McGimsey, R. G., and Westgate, J. A., 1995, Mount Churchill, Alaska: source of the late Holocene White River Ash: Canadian Journal of Earth Sciences [Journal Canadien des Sciences de la Terre], v. 32, n. 6, p. 741-748.