Gareloi volcano

Stratovolcano 1573 m / 5,161 ft
United States, Aleutian Islands, 51.79°N / -178.79°W
Current status: restless (2 out of 5)
Last update: 10 Jun 2021 (fumarolic activity, elevated unrest continues)
Gareloi volcano from the webcam on 8 June 2021
Gareloi volcano from the webcam on 8 June 2021

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Typical eruption style: unspecified
Gareloi volcano eruptions: 1989 

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Fri, 18 Jun 2021 (GMT) (1 earthquake)
18 Jun 2021 22:45:15 GMT
0.4

18 km
10.9 km (6.8 mi)
146 Km W of Adak, Alaska
Fri, 11 Jun 2021 (GMT) (1 earthquake)
11 Jun 2021 21:04:35 GMT
1.7

9.4 km
25 km (16 mi)
133 Km WSW of Adak, Alaska
Tue, 8 Jun 2021 (GMT) (1 earthquake)
8 Jun 2021 21:46:41 GMT
0.5

12 km
1.8 km (1.1 mi)
150 Km W of Adak, Alaska
Mon, 7 Jun 2021 (GMT) (1 earthquake)
7 Jun 2021 16:25:47 GMT
2.9

205 km
38 km (24 mi)
Bering Sea, 92 mi west of adak alaska, Aleutians West, Alaska, USA

Background

The 8 x 10 km diameter Gareloi Island, the northernmost volcano of the Delarof Group at the western end of the Andreanof Islands, consists of a stratovolcano with two summits and a SE-trending fissure. This prominent fissure was formed during an eruption in 1929 and extends from the southern summit to the sea. Steep sea cliffs that are cut into rocks of an older, eroded center are found on the SW coast, and submarine deposits of three debris avalanches produced by edifice collapse are found offshore. Young lava flows cover the older volcano from the 1573-m-high summit of Gareloi to the coast along three broad axes trending NW, ENE, and south. The 1929 eruption originated from 13 craters along a 4-km-long fissure. Phreatic explosions were followed by the ejection of glassy pumice, lapilli, scoria, and older blocks, as well as by the emission of four short, steep lava flows, one of which reached the SE coast.
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Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8
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