Global Volcanism Program | Image GVP-02510

Following the 1964 eruption and debris avalanche, erosional canyons formed in the pyroclastic flow deposits that overlie debris avalanche deposits. The pyroclastic flows were produced during the explosive Plinian phase that followed catastrophic flank collapse. Photo by Yuri Doubik (Institute of Volcanology, Petropavlovsk).

Following the 1964 eruption and debris avalanche, erosional canyons formed in the pyroclastic flow deposits that overlie debris avalanche deposits. The pyroclastic flows were produced during the explosive Plinian phase that followed catastrophic flank collapse.

Photo by Yuri Doubik (Institute of Volcanology, Petropavlovsk).

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Keywords: pumice | deposit | erosion | pyroclastic flow | stratigraphy

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