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Stepovak Bay 4 volcano

Stratovolcano 1557 m / 5,108 ft
United States, Alaska Peninsula, 55.95°N / -159.95°W
Current status: (probably) extinct (0 out of 5) | Reports
Stepovak Bay 4 volcano books
Typical eruption style: unspecified
Stepovak Bay 4 volcano eruptions: Pleistocene No recent earthquakes
TimeMag. / DepthDistanceLocation

Background:

A group of four late-Pleistocene to Holocene volcanoes is located along a NE-trending line SW of Kupreanof volcano. The SW-most of the 4 volcanoes, located NW of Stepovak Bay and 24 km SW of Kupreanof, is of late-Pleistocene age. Stepovak Bay 4, located 5.5 km NE of Stepovak Bay 3 cinder cone and 9 km SW of Kupreanof volcano, is a small, 1557-m-high stratovolcano. Holocene debris flows or block-and-ash flows with possible juvenile material extend from Stepovak Bay 4 volcano, and a fumarole has been observed.
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Smithsonian / GVP volcano information


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