Ugashik-Peulik
About Ugashik-Peulik
The Ugashik-Peulik volcanic complex lies south of Becharof Lake and east of Upper Ugashik Lake. Late-Pleistocene caldera formation was followed by the emplacement of at least five 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 km3 Peulik stratovolcano grew 2.5 km to the N. Lava flows from Peulik cover the caldera rim to the south and extend to Becharof Lake, 6 km N. A small lava dome on the E flank of Peulik was the source of a small block-and-ash flow. The summit of Peulik 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 km2 area to the NW. A single documented historical eruption took place from Peulik in 1814.
Eruption reports
Reports from GDACS and NASA EONET linked to this volcano.
No eruption reports in our records yet. New reports appear here automatically.
Earthquakes nearby, 30 days
Within about 50 km. Swarms of small quakes can sometimes accompany volcanic unrest.
- 1.6
M1.6 earthquake - 80 km W of Karluk, Alaska
20 km deep
Minor - 1.4
M1.4 earthquake - 80 km W of Karluk, Alaska
13 km deep
Minor - 3.0
M3.0 earthquake - 79 km W of Karluk, Alaska
5 km deep
Light - 3.2
M3.2 earthquake - 80 km W of Karluk, Alaska
4 km deep
Light - 1.5
M1.5 earthquake - 88 km W of Karluk, Alaska
18 km deep
Minor