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IMAGE 24623
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Looking north along the eastern caldera rim on top of the caldera wall. Horizontal deposits exposed in the cliff wall are remnants of a pre-caldera stratocone. The undulating unit capping the wall is the welded pyroclastic flow deposit from the caldera-forming eruption, locally as thick as 5 meters, with pumice fall deposits from the same eruption directly beneath the welded unit. Highly tilted rocks in the left foreground are phreatomagmatic surge deposits from post-caldera eruptions beneath the eastern caldera lake.

Date: 2000 12:00 AM
Volcano(es):Fisher
Photographer/Creator: Stelling, P. L.
URL:http://www.avo.alaska.edu/images/image.php?id=24623

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Page modified: May 25, 2023 14:26
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