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All posts for the day March 29th, 2019

Fisher Caldera, Alaska – The largest Caldera System in the State

Posted by agimarc on 2019-03-29
Posted in: America N, Science, Volcanoes. Tagged: Andesite, banded, Basalt, Caldera, Dacite, Fisher, Fisher Tuff, ignimbrite, Mt.Finch, phreatomagmatic, pumice, Scotch Cap, stratocone, Turquoise Cone, Unimak, welded tuff. 1 Comment
image001

Historically Active Volcanoes of Alaska. Image courtesy AVO. https://avo.alaska.edu/images/dbimages/display/1258656665_ak6.jpg

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