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Country: | Japan | |
| Subregion Name: | Hokkaido (Japan) | ||
| Volcano Number: | 0805-061 | ||
| Volcano Type: | Stratovolcanoes | ||
| Volcano Status: | Historical | ||
| Last Known Eruption: | 1898 | ||
| Summit Elevation: | 2013 m | 6,604 feet | |
| Latitude: | 43.453°N | 43°27'12"N | |
| Longitude: | 143.036°E | 143°2'10"E | |
| The Nipesotsu-Maruyama volcano group, located west of Nukabira lake about 20 km east of Tokachi-dake volcano, is composed of a number of overlapping andesitic-to-rhyolitic stratovolcanoes and lava domes constructed along a NW-SE trend. These volcanoes overlap the SW rim and SW caldera floor of the Pleistocene Tokachimitsumata caldera. The highest peak in the complex is 2013-m-high Nipesotsu-yama stratovolcano, which was active during the mid-Pleistocene, about 0.4-0.2 million years ago. The Maruyama stratovolcano and lava dome at the southern end of the complex was discovered to be a Quaternary volcano only in 1989. It is also referred to as Higashi-Tokachi-Maruyama to distinguish it from several other volcanoes named Maru-yama, which means "Round Mountain." A minor phreatic eruption took place at Maru-yama lava dome in 1898, and fumaroles are present on one of its summit craters. | |||
