Yatsugatake

sopka (bez známé erupce za posledních ~12 000 let), Japan, Northwestern Pacific Volcanic Regions

Kde

Japan, Northwestern Pacific Volcanic Regions

Typ (GVP)

Stratovolcano(es)

Nadmořská výška

2 899 m

Poloha

35,968°, 138,373°

The older Yatsugatake volcano was active about 1 million years ago and the younger was active about 0.2 million years ago (Nakano et al., 2001). This complex of N-S-trending stratovolcanoes extends for about 10 km and is also known as Minami Yatsugatake ("Southern Eight Peaks") (Matsuhisa and Kurasawa, 1983). Both ends of the complex produced volcanic dry avalanche deposits (sector collapses of a volcanic cone), ranging from 0.27 to 9.0 km3 in volume(Tadahide, 1983). The volcanic rocks of the northern end generally consist of hornblende and pyroxene dacites, whereas those at the southern end are composed of olivine and pyroxene andesites. The volcanic products also contain xenoliths derived from a diverse assortment of basement rocks (Matsuhisa and Kurasawa, 1983). Extensive geochemical data is available from Matsuhisa and Kurasawa (1983).

Text: Smithsonian Global Volcanism Program.

Údaje o sopce: Smithsonian Global Volcanism Program. Další sopky a průduchy.