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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Redoubt
Redoubt is on the west side of Cook Inlet, 170 km SW of Anchorage. It was constructed over a basement of glacially eroded Mesozoic granitic rocks, seen here in the foreground. The volcano has been very active during the Holocene, producing at least 30 tephra layers in the Cook Inlet basin stratigraphy. A plume rises from the summit crater in this view from the NE following its 1989-90 eruption. Iliamna is visible in the distance to the left. Photo by Christina Neal (U.S. Geological Survey, Alaska Volcano Observatory).
Volcano Number:
313030
Volcano Name:
Redoubt
Country:
United States
Volcano Type:
Stratovolcano
Last Eruption:
2009 CE
Elevation:
3108m
Tectonic Setting:
Subduction zone / Continental crust (> 25 km)
Pop. within 30km:
1
Pop. within 100km:
32410
Latitude:
60.485
Longitude:
-152.742
Details
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Redoubt is a glacier-covered stratovolcano with a breached summit crater in Lake Clark National Park about 170 km SW of Anchorage. Next to Mount Spurr, Redoubt has been the most active Holocene volcano in the upper Cook Inlet. The volcano was constructed beginning about 890,000 years ago over Mesozoic granitic rocks of the Alaska-Aleutian Range batholith. Collapse of the summit 13,000-10,500 years ago produced a major debris avalanche that reached Cook Inlet. Holocene activity has included the emplacement of a large debris avalanche and clay-rich lahars that dammed Lake Crescent on the south side and reached Cook Inlet about 3,500 years ago. Eruptions during the past few centuries have affected only the Drift River drainage on the north. Historical eruptions have originated from a vent at the north end of the 1.8-km-wide breached summit crater. The 1989-90 eruption had severe economic impact on the Cook Inlet region and affected air traffic far beyond the volcano.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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Emissions Data from the Global Volcanism Program of the Smithsonian Institution
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Data from the Earthchem Library
Sorry. No data exist for this volcano in the EarthChem Library.
Data from the Earthchem Portal
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Data from the SESAR Database
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Data from the MaGa Database
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Data from UNAVCO
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Data from USIEI
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Data from IRIS FDSNWS
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