Nishihitokappuyama [Bogatyr Ridge] (Japan - administered by Russia)

Status Unknown Eruption Unknown 1634m
Stratovolcano (Subduction zone / Intermediate crust (15-25 km))

The Nishihitokappuyama [Bogatyr Ridge] volcano on Iturup Island in the southern Kuriles consists of a cluster of small NE-SW-trending late-Pleistocene to Holocene cones and craters, along with the larger Stokap stratovolcano at the SW end of the ridge. The basaltic-andesite to andesitic Stokap is capped by a complex of 8-10 cones and explosion craters, the largest of which contains a lake. The volcanic chain was constructed over a high Pleistocene base, whose glaciated surface is covered by lava flows from Stokap that reach to both the Pacific Ocean and the Sea of Okhotsk. No historical eruptions are known from the volcanic chain.

Snow-capped Stokap volcano (center) lies at the SW end of Bogatyr Ridge, an elongated chain of small volcanoes on southern Iturup Island. Bogatyr Ridge (left of Stokap) consists of a cluster of small NE-SW-trending late-Pleistocene to Holocene cones and craters. Stokap volcano is capped by a complex of 8-10 cones and explosion craters, the largest of which contains a lake. The slopes of conical Atsonupuri volcano form the ridge in the right foreground.

Photo by Alexander Rybin, 2001 (Institute of Marine Geology and Geophysics, Yuzhno-Sakhalin).

Last updated 2019-08-04 00:28:03