Yabakei

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

Kde

Japan, Western Pacific Volcanic Regions

Typ (GVP)

Caldera

Nadmořská výška

800 m

Poloha

33,169°, 131,221°

The largely buried Yabakei caldera (also known as the Shishimuta caldera), a member of the Hohi Volcanic Zone, was the source of two major Pleistocene explosive eruptions producing the dacitic Yabakei (0.1 Ma) and Imaichi (0.9 Ma) pyroclastic flows (Hayashida et al., 1996; Kamata, 1989). The Yabakei pyroclastics take the form of densely welded tuffs, originally more than 110 km3 in total volume, and crop out over an area of about 480 km2 (Kamata, 1989). The 8-km-diameter funnel-shaped caldera is filled with breccia and shows no evidence of resurgent volcanic activity after these two caldera eruptions. However, post-caldera monogenetic activity appears to have continued for about 600,000 years after the caldera activity (Kamata, 1989).

Text: Smithsonian Global Volcanism Program.

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