Alaska Volcano Observatory

Medium to coarse ash - mostly grains of granular white vitrophyre. Could be accretionary lapilli. 3 glasses, only marginally similar to any other samples.

Sample Location:

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

300 km

200 mi

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References Cited

[1] Tephrochronology of the Brooks River Archaeological District, Katmai National Park and Preserve, Alaska: what can and cannot be done with tephra deposits, 2000

Riehle, J. R., Dumond, D. E., Meyer, C. E., and Schaaf, J. M., 2000, Tephrochronology of the Brooks River Archaeological District, Katmai National Park and Preserve, Alaska: what can and cannot be done with tephra deposits: in McGuire, W. J., Griffiths, D. R., Hancock, P. L., and Stewart, I. S., (eds.), The archaeology of geological catastrophes, Geological Society, London Special Publication 171, p. 245-266.

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