Alaska Volcano Observatory

1 cm thick, fine-grained gray color horizon of ash. Ash C of Dumond (1981), described by Stilwell (1995) as an uppermost gray horizon, a central black zone, and a lower yellow horizon.

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] Late Quaternary glacial geology, shoreline morphology, and tephrochronology of the Iliamna/ Naknek/ Brooks Lake area, Southwestern Alaska, 1995

Stilwell, K. B., 1995, Late Quaternary glacial geology, shoreline morphology, and tephrochronology of the Iliamna/ Naknek/ Brooks Lake area, Southwestern Alaska: Utah State University unpublished M.S. thesis, 176 p.

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