|
|
Country: | Russia | |
| Subregion Name: | Kuril Islands | ||
| Volcano Number: | 0900-041 | ||
| Volcano Type: | Stratovolcano | ||
| Volcano Status: | Radiocarbon | ||
| Last Known Eruption: | 7480 BC ± 50 years | ||
| Summit Elevation: | 528 m | 1,732 feet | |
| Latitude: | 44.608°N | 44°36'30"N | |
| Longitude: | 146.994°E | 146°59'38"E | |
| The rim of the dramatic 7 x 9 km wide Lvinaya Past (Lion's Jaw) caldera on southern Iturup Island drops to 50 m below sea level on the NW side. The volcano derives its name from a rock resembling a sleeping lion that breaches the surface at the center of the submerged caldera rim. A shallow 5-km-wide passageway on the NW side allows access of the Sea of Okhotsk into the caldera basin, whose floor is 550 m below sea level and lies almost 1 km below the caldera rim. The caldera, also referred to as Moikeshi, formed about 9400 years ago during one of the largest Holocene eruptions of the Kuril Islands. Thick dacitic pumice deposits from this eruption form the 50-60 m high Yuzhny (Southern) isthmus, which joins the three southernmost volcanoes on Iturup Island, Rokko, Lvinaya Past, and Berutarube. | |||
