A group of geologists observe bedded pyroclastic surge deposits from the Cerro Colorado maar. Thinly bedded surge units are typical of distal portions of pyroclastic surge deposits, caused by deposition of material from the basal part of the flow.

Photo by Bill Rose, 1978 (Michigan Technological University).

This image is made available under the Creative Commons BY-NC-ND 4.0 license terms.

Keywords: outcrop | geology | stratigraphy | tuff | maar

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