Mt.Fuji is the largest mountain in Japan today. it is 3776 m above sea level in the form of a typical cone about 50 km across the base and still growing today. at the summit of the volcano is a circular crater about 500m across and as much as 250 m deep below the highest point in the volcano.(35o21'N, 138o43'E) Around the summit of the volcano it is covered in permanent patches of icy snow and the bottom of the volcano is just dried up lava and rocks and other sediments from pyroclastic flows.
The modern postglacial stratovolcano is constructed above a group of overlapping volcanoes, remnants of which form irregularities on Fuji's profile.Growth of the Younger Fuji volcano began with a period of voluminous lava flows from 11,000 to 8000 years before present (BP), accounting for four-fifths of the volume of the Younger Fuji volcano. Minor explosive eruptions dominated activity from 8000 to 4500 BP, with another period of major lava flows occurring from 4500 to 3000 BP.Subsequently, intermittent major explosive eruptions occurred, with subordinate lava flows and small pyroclastic flows. Summit eruptions dominated from 3000 to 2000 BP, after which flank vents were active. The extensive basaltic lava flows from the summit and some of the more than 100 flank cones and vents blocked drainages against the Tertiary Misaka Mountains on the north side of the volcano, forming the Fuji Five Lakes, popular resort destinations. The last confirmed eruption of this dominantly basaltic volcano in 1707 was Fuji's largest during historical time. It deposited ash on Edo (Tokyo) and formed a large new crater on the east flank.
Country: Japan
