Alaska Volcano Observatory

The composition reported here is the average of analyses of the light fraction (heavy minerals were removed before microprobe analysis) of three samples: 96TOK1-9, 96TOK1-12, and 96TOK1-13. See individual samples for descriptions.

Sample Location:

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Legend

	Red (Warning)
	Orange (Watch)
	Yellow (Advisory)
	Green (Normal)
	Uninstrumented

300 km

200 mi

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References Cited

[1] Stratigraphy, major oxide geochemistry, and 40Ar/39Ar geochronology of a tephra section near Tok, Alaska, 2002

Schaefer, J. R. G., 2002, Stratigraphy, major oxide geochemistry, and 40Ar/39Ar geochronology of a tephra section near Tok, Alaska: University of Alaska Fairbanks unpublished M.S. thesis, 62 p.

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