Ugashik-Peulik volcano
Updated: Jun 10, 2023 15:06 GMT -
Stratovolcano 1474 m / 4,836 ft
United States, Alaska Peninsula, 57.75°N / -156.37°W
Current status: normal or dormant (1 out of 5)
United States, Alaska Peninsula, 57.75°N / -156.37°W
Current status: normal or dormant (1 out of 5)
Last update: 22 Dec 2021 (Smithsonian / USGS Weekly Volcanic Activity Report)
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Ugashik-Peulik volcano eruptions: 1814
Latest nearby earthquakes
| Time | Mag. / Depth | Distance/Location | ||
| Sunday, June 4, 2023 GMT (4 quakes) | ||||
| Jun 4, 2023 2:36 pm (GMT -8) (Jun 4, 2023 22:36 GMT) | 1.7 128 km | 36 km (22 mi) Alaska Peninsula | ||
| Jun 4, 2023 2:44 am (GMT -8) (Jun 4, 2023 10:44 GMT) | 2.2 72 km | 5.6 km (3.5 mi) 52 mi southeast of Egegik, Lake and Peninsula, Alaska, USA | ||
| Jun 3, 2023 7:38 pm (GMT -8) (Jun 4, 2023 03:38 GMT) | 1.7 13 km | 24 km (15 mi) 90 Km ESE of Egegik, Alaska | ||
| Jun 3, 2023 5:05 pm (GMT -8) (Jun 4, 2023 01:05 GMT) | 1.7 211 km | 30 km (19 mi) 76 Km ESE of Egegik, Alaska | ||
| Tuesday, May 30, 2023 GMT (1 quake) | ||||
| May 30, 2023 2:14 pm (GMT -8) (May 30, 2023 22:14 GMT) | 1.7 241 km | 26 km (16 mi) 88 Km ESE of Egegik, Alaska | ||
Background
The Ugashik-Peulik volcanic complex lies south of Becharof Lake and east of Upper Ugashik Lake. Late-Pleistocene caldera formation at Ugashik volcano was followed by the emplacement of at least 5 Holocene lava domes within the 4.5-km-wide caldera. Most of the caldera walls consist of basement sandstones of Jurassic age. Following caldera formation the small, 3 cu km Peulik stratovolcano grew 2.5 km to the north to a height of 1474 m, more than 500 m above that of Ugashik. Lava flows from Peulik cover the caldera rim to the south and extend to Becharof Lake, 6 km to the north. A small lava dome at 1200 m elevation on the east flank of Peulik was the source of a small block-and-ash flow. The summit of Peulik volcano contains a 1.5-km-wide crater breached to the west that is partially filled by a lava dome. Debris-avalanche deposits cover a 75 sq km area to the NW. A single documented historical eruption took place from Peulik volcano in 1814.---
Smithsonian / GVP volcano information
See also: Sentinel hub | Landsat 8 | NASA FIRMS
