Alaska Volcano Observatory

Six hundred fifty-eight m depth. Bed is one cm thick. 10% brown ash (shards are angular, show mottled extinction and may be detrital). Refractive index: <1.560.

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] Volcanic ash from DSDP Site 178, Gulf of Alaska, 1973

Pratt, R. M., Scheidegger, K. F., and Kulm, L. D., 1973, Volcanic ash from DSDP Site 178, Gulf of Alaska: in Musich, L. F. and Weser, O. E., (eds.), Initial Reports of the Deep Sea Drilling Project, v. 18, Washington, Government Printing Office, p. 833-834.

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