Chiginagak

sopka – Stratovolcano, United States, North America Volcanic Regions

Kde

United States, North America Volcanic Regions

Typ (GVP)

Stratovolcano

Nadmořská výška

2 221 m

Tektonické prostředí

Subduction zone / Continental crust (> 25 km)

Poslední známá erupce

1998

Poloha

57,135°, -156,990°

The symmetrical, glaciated Chiginagak stratovolcano located on the Alaska Peninsula ~15 km NW of Chiginagak Bay contains a small summit crater, which is breached to the south, and one or more summit lava domes. Lava domes occur high on the NW and SE flanks of the calc-alkaline volcano. An unglaciated lava flow and an overlying pyroclastic-flow deposit extending E from the summit are the most recent eruption products, which most likely originated from a lava dome on the SE flank, 1 km from the summit. Brief ash eruptions were reported in July 1971 and August 1998. Fumarolic activity has been reported on the NE flank, and two areas of hot-spring travertine deposition are located at the NW base near Volcano Creek.

Text: Smithsonian Global Volcanism Program.

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