Trader Mtn 98000 yBP
Start: 98000 yBP ± 50000 Years [1]
Event Type: Other
- Lava flow [2]
- Lava dome [2]
Description: Trader Mountain is a small dacitic stratocone-like feature with an extrusive dome; lava flows dip away from the center in all directions (Chris Nye, oral commun., 2007). Wilson and others (1995) [1] alternatively describe Trader Mountain as a hypabyssal dacite plug, and report a "potassium-argon age of 0.98+/- 0.05 Ma (F.H. Wilson and Nora Shew, unpub. data, 1988)."
References Cited
[1] Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska, 1995
Wilson, F. H., Detterman, R. L., Miller, J. W., and Case, J. E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 2272, unpaged, 2 sheets, scale 1:24,000.[2] Alaska Volcano Observatory website, 2005
Alaska Volcano Observatory, 2005-, Alaska Volcano Observatory website: http://www.avo.alaska.edu.Complete Eruption References
Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska, 1995
Wilson, F. H., Detterman, R. L., Miller, J. W., and Case, J. E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska Peninsula, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 2272, unpaged, 2 sheets, scale 1:24,000.