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Stepovak Bay 4 description and information


Most Recent Activity:
Seismically Monitored: No
Elevation: 5108 ft (1557 m)
Latitude: 55.952° N
Longitude:159.958° W
Quadrangle:Stepovak Bay
CAVW Number:
Pronunciation: Sound file
Nearby towns:Ivanof Bay 19 mi (30 km) SE
Perryville 32 mi (51 km) SE
Sand Point 47 mi (76 km) SW
Nelson Lagoon 48 mi (78 km) NW
Anchorage 512 mi (824 km) NE
This volcano is a member of the Stepovak Bay group. From Wood and Kienle (1990) [1]: "The Stepovak Bay group is a chain of five volcanoes at the southwest end of a N40 degrees E oriented linear segment of the Aleutian arc on the Alaska Peninsula. This same segment includes the better known Veniaminof and Aniakchak calderas. Three of the Stepovak Bay volcanoes [2, 4, and Kupreanof] have clearly had Holocene eruptions, resulting in three small debris flows filling late Pleistocene glacial valleys, and a small cinder cone and associated lava flow. The other two volcanoes (1 and 3) do not show unmistakable evidence of Holocene activity. They have ice-filled summit craters 500 m (1) and 300 m (3) in diameter that may be late Pleistocene age. These volcanoes have contributed to extensive late Tertiary and Quaternary lava flows, some extending near sea level."
Volcanoes of North America: United States and Canada, 1990
Wood, C. A., and Kienle, Juergen, (eds.), 1990, Volcanoes of North America: United States and Canada: New York, Cambridge University Press, 354 p.

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Page modified: June 12, 2014 07:20
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