Fourpeaked

sopka – Stratovolcano, United States, North America Volcanic Regions

Kde

United States, North America Volcanic Regions

Typ (GVP)

Stratovolcano

Nadmořská výška

2 105 m

Tektonické prostředí

Subduction zone / Continental crust (> 25 km)

Poslední známá erupce

2006

Poloha

58,770°, -153,672°

Poorly known Fourpeaked volcano in NE Katmai National Park consists of isolated outcrops surrounded by the Fourpeaked Glacier, which descends eastward almost to the Shelikof Strait. The orientation of andesitic lava flows and extensive hydrothermal alteration of rocks near the present summit suggest that it probably marks the vent area. Eruptive activity during the Holocene had not been confirmed prior to the first historical eruption in September 2006. A N-trending fissure extending 1 km from the summit produced minor ashfall.

Text: Smithsonian Global Volcanism Program.

Údaje o sopce: Smithsonian Global Volcanism Program. Další sopky a průduchy.