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Chiginagak volcano

Stratovolcano 2221 m / 7,287 ft
United States, Alaska Peninsula, 57.14°N / -156.99°W
Current status: dormant (1 out of 5)
Chiginagak volcano books
Typical eruption style: unspecified
Chiginagak volcano eruptions: 1998 
TimeMag. / DepthDistanceLocation
Mon, 29 May
Mon, 29 May 09:54 UTCM 2.3 / 100 km21 km- 117km NE of Chignik Lake, Alaska
Thu, 11 May
Thu, 11 May 09:10 UTCM 2.3 / 14.6 km10 km- 124km NE of Chignik Lake, Alaska
Tue, 9 May
Tue, 9 May 23:59 UTCM 2.031 km- 135km NE of Chignik Lake, Alaska
Sat, 29 Apr
Sat, 29 Apr 14:03 UTCM 2.1 / 6.3 km7 km- 161km S of King Salmon, Alaska
Fri, 28 Apr
Fri, 28 Apr 09:17 UTCM 1.88 km- 162km NNW of Chirikof Island, Alaska
View all recent quakes

Background:

The symmetrical, calc-alkaline Chiginagak stratovolcano located about 15 km NW of Chiginagak Bay contains a small summit crater, which is breached to the south, and one or more summit lava domes. Satellitic lava domes occur high on the NW and SE flanks of the glacier-mantled volcano. An unglaciated lava flow and an overlying pyroclastic-flow deposit extending east from the summit are the most recent products of Chiginagak. They most likely originated from a lava dome at 1687 m on the SE flank, 1 km from the summit of the volcano, which has variably been estimated to be from 2075 to 2221 m high. Brief ash eruptions were reported in July 1971 and August 1998. Fumarolic activity occurs at 1600 m elevation on the NE flank of the volcano, and two areas of hot-spring travertine deposition are located at the NW base of the volcano near Volcano Creek.
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Smithsonian / GVP volcano information


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