Sarychev Peak (Russia)
Status Unknown Eruption 2018 1496m
Stratovolcano (Subduction zone / Intermediate crust (15-25 km))
Sarychev Peak, one of the most active volcanoes of the Kuril Islands, occupies the NW end of Matua Island in the central Kuriles. The andesitic central cone was constructed within a 3-3.5-km-wide caldera, whose rim is exposed only on the SW side. A dramatic 250-m-wide, very steep-walled crater with a jagged rim caps the volcano. The substantially higher SE rim forms the 1496 m high point of the island. Fresh-looking lava flows, prior to activity in 2009, had descended in all directions, often forming capes along the coast. Much of the lower-angle outer flanks of the volcano are overlain by pyroclastic-flow deposits. Eruptions have been recorded since the 1760s and include both quiet lava effusion and violent explosions. Large eruptions in 1946 and 2009 produced pyroclastic flows that reached the sea.
A cloudcap obscurs the dramatic, steep-walled summit crater of Sarychev volcano, one of the most active volcanoes of the Kuril Islands. Sarychev occupies the NW end of Matua Island in the central Kurils in this NASA Space Shuttle image (with north to the top). The andesitic central cone was constructed within a mostly buried 3-3.5 km wide caldera; an older volcano forms the SE part of the island (lower right). Fresh-looking lava flows descend all sides of Sarychev Peak. The small island of Toporkovyi is partially visible at the right-center.
NASA Space Shuttle image ISS005-E-17796, 2002 (http://eol.jsc.nasa.gov/).
Last updated 2019-10-12 00:00:03