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Uratman

Stratovulcano · Russia · 678 m

A large post-caldera cone (upper left) was constructed in the SE part of the Uratman caldera, the northernmost volcano on Simushir Island. The caldera is partially filled by Brouton Bay, shown here. Two cones and a lava dome are on the northern flank of the larger cone in this view from the NE caldera rim.
A large post-caldera cone (upper left) was constructed in the SE part of the Uratman caldera, the northernmost volcano on Simushir Island. The caldera is partially filled by Brouton Bay, shown here. Two cones and a lava dome are on the northern flank of the larger cone in this view from the NE caldera rim. · Foto: Photo by Yoshihiro Ishizuka, 2000 (Hokkaido University). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Russia
Regione
Northwestern Pacific Volcanic Regions / Kuril Volcanic Arc
Altitudine
678 m
Coordinate
47.120, 152.250
Ultima eruzione
Sconosciuto
Contesto tettonico
Subduction zone / Oceanic crust (< 15 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

The northernmost volcano on Simushir Island, Uratman consists of a 7.5-km-wide Pleistocene caldera with walls that rise 450 m above a 250-m-deep caldera bay. A narrow gap in the northern rim provides ocean access into Brouton Bay, which fills the NW half of the caldera. The andesitic central cone grew during the Holocene in the SE part of the caldera. Two cinder cones are located along the N flank of Uratman, and a lava dome was formed on its NW flank along Brouton Bay. No recorded eruptions are known.

Sintesi da Wikipedia

L'Uratman è un stratovulcano di tipo somma estinto situato sull'isola di Simušir, nella Grande catena delle Curili (Russia). Appartiene al distretto Kuril'skij dell'oblast' di Sachalin.

Wikipedia · CC BY-SA · Leggi l'articolo completo

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