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Volcano Mountain
Volcano Mountain is an active cinder cone in central Yukon Territory, Canada, located a short distance north of Fort Selkirk, near the confluence of the Pelly and Yukon Rivers. Volcano Mountain is called Nelrúna in the Northern Tutchone language.
==Geology==
Volcano Mountain is the youngest volcano in the Fort Selkirk Volcanic Field and one of the youngest in the northern section of the Northern Cordilleran Volcanic Province. The lava at Volcano Mountain is called olivine nephelinite, which is a very uncommon type of lava. This type of lava is believed to have come from much deeper inside the Earth than the basaltic lava. The last eruption from Volcano Mountain produced young nephelinitic lava flows that remain unvegetated and appear to be only a few hundred years old. However, dating of sediments in lake impounded by the lava flows indicated that the youngest flows could not be younger than mid-Holocene and could be early Holocene or older.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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