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Edgecumbe volcano

Actualizado: 5 dic. 2022 12:40 GMT -
Stratovolcanoes 970 m / 3,182 ft
United States, Eastern Alaska, 57.05°N / -135.75°W
Current status: normal or dormant (1 out of 5)
Last update: 29 abr 2022 (Smithsonian / USGS Weekly Volcanic Activity Report)
Mt. Edgecumbe volcano Sitka, AK (image taken by Fate Xalis)
Mt. Edgecumbe volcano Sitka, AK (image taken by Fate Xalis)

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Typical eruption style: sin especificar
Erupciones del volcán Edgecumbe: 2220 BC +-100 years

Latest nearby earthquakes

No hay terremotos recientes

Background

The Pleistocene-to-Holocene Mount Edgecumbe volcanic field covers about 260 sq km of Kruzov Island west of Sitka in the SE panhandle of Alaska. The basaltic-to-dacitic field is dominated by the large composite cones of Mount Edgecumbe, Crater Ridge, and Shell Mountain and has an unusual tectonic setting only 16 km east of the Queen Charlotte-Fairweather transform fault separating the North American and Pacific plates. Mount Edgecumbe, a 970-m-high stratovolcano with a well-defined crater, is the largest volcano of the Edgecumbe field. Crater Ridge is truncated by a 1.6-km-wide, 240-m-deep caldera. These and other vents of the volcanic field are oriented along a SW-NE line. Volcanic activity originated about 600,000 years ago along fissures cutting Kruzof Island. A series of major silicic explosive eruptions took place about 9000-13,000 radiocarbon years ago. The latest dated eruptions were phreatomagmatic explosions during the mid-Holocene, and all postglacial activity has been pyroclastic. Reports of historical eruptions of Mount Edgecumbe are unsubstantiated.
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Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8 | NASA FIRMS
vie, 29 abr 2022, 07:03

Edgecumbe (United States) - Smithsonian / USGS Weekly Volcanic Activity Report for 20 April-26 April 2022 (NEW)

AVO stated that a seismic swarm beneath Kruzof Island near Edgecumbe that began at about 0200 on 11 April had declined to background levels by 22 April. The swarm prompted an in-depth analysis of satellite data which spanned the last 7.5 years. The data showed that a broad area of uplift, about 17 km in diameter, was located about 2.5 km E of Edgecumbe. ... Read all
sáb, 23 abr 2022, 02:12

Edgecumbe volcano (Alaska, United States): swarm of earthquakes detected

Map showing earthquake epicenters near Sitka Alaska from 1990 through 2022 using data products generated by the Alaska Earthquake Center and obtained via the ANSS Combined Catalog. Photo Credit: AVO.
A swarm of earthquakes was detected in the vicinity of Mount Edgecumbe volcano beginning on Monday, April 11, 2022. ... Read all
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