Pyroclastic-flow deposits from the April 15 (lower 2/3 of section) and April 21 (upper 1/3 of section), 1990 eruptions of Redoubt Volcano in Alaska are exposed in a gully along the western margin of the piedmont lobe of Drift glacier. The shovel at the base of the section provides scale. The somewhat larger April 15 pyroclastic flow carried large blocky fragments of a lava dome that had been growing in the summit crater.
Type/Process: Pyroclastic Flow
Volcanic Status: Historical
Image Number: 052-055
Photographer: Christina Neal (U.S. Geological Survey)
Summit Elevation: 3108 meters
Latitude/Longitude: 60.485 N / 152.742 W
Timeframe: Last known eruption 1964 or later