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Country: | Russia | |
| Subregion Name: | Kuril Islands | ||
| Volcano Number: | 0900-10= | ||
| Volcano Type: | Somma volcano | ||
| Volcano Status: | Historical | ||
| Last Known Eruption: | 1999 | ||
| Summit Elevation: | 1125 m | 3,691 feet | |
| Latitude: | 45.387°N | 45°23'12"N | |
| Longitude: | 148.843°E | 148°50'33"E | |
| The Medvezhia volcanic complex occupies the NE end of Iturup Island. Two overlapping calderas, 14 x 18 and 10 x 12 km in diameter, were formed during the Pleistocene. The caldera floor contains several lava domes, cinder cones and associated lava fields, and a small lake. Four small closely spaced stratovolcanoes were constructed along an E-W line on the eastern side of the complex. The easternmost and highest, Medvezhii, lies outside the western caldera, along the Pacific coast. Srednii, Tukap, and Kudriavy volcanoes lie immediately to the west. Historically active Kudriavy (also known as Moyoro-dake) is younger than 2000 years; it and Tukap remain fumarolically active. The westernmost of the post-caldera cones, Menshoi Brat, is a large lava dome with flank scoria cones, one of which has produced a series of young lava flows up to 4.5 km long that reached Slavnoe Lake. Eruptions of Kudriavy have been documented since the 18th century, although lava flows from cinder cones on the flanks of Menshoi Brat were also probably erupted within the past few centuries. | |||
