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The Augustine Volcano on Augustine Island, Alaska

March 21st, 2009 Category: Volcanoes

Alaska, USA - March 18th, 2009

Alaska, USA - March 18th, 2009

The Augustine Volcano is a stratovolcano on Augustine Island in southwestern Cook Inlet, in the Kenai Peninsula Borough of southcentral coastal Alaska. It is located about 280 kilometres (174 mi) southwest of the city of Anchorage.

The nearly circular uninhabited island, with a land area of 83.872 square kilometres (32.4 sq mi), is made up mainly of past eruption deposits. It is 12 km (7.5 mi) wide east-west, 10 km (6 mi) north-south; a nearly symmetrical central summit peaks at altitude 1,260 meters (4,134 ft).

Augustine’s summit consists of several overlapping lava dome complexes placed during many historic and prehistoric eruptions. Most of the fragmental debris exposed along its slopes comprises angular blocks of dome-rock andesite. The surface of such deposits is skeet, a field of steep conical mounds and intervening depressions with many meters of local relief.

The Alaska Volcano Observatory currently rates Mount Augustine as Level of Concern Color Code Green for aviation and the Volcano Alert Level is at Normal.

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