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Banno-sawa Pyroclastic Rock and Lava Ishige and Nakagawa, 2017

Abbr. BS

• Type locality: 2,150 m above sea level, North of Jigoku valley explosion crater, Mount Asahidake, Mount Taisetsu, Hokkaido
• Volcanic rocks
• Pleistocene

• Sedimentary facies: Lava, Pyroclastic fall deposit
• Lithofacies: Welded - non-welded pyroclastic rocks, Grain-supported scoria, Grain-supported pumice, Interbedded tuff and coarse tuff
• Lithofacies (Pyroclastic rocks): Olivine-bearing clinopyroxene-orthopyroxene basaltic andesite - andesite
• Lithofacies (Pumice): Clinopyroxene-orthopyroxene andesite - dacite

• Eruptive volume: < 0.05 km³ DRE
• Thickness (Pyroclastic rocks): 5 - 50 m
• Thickness (Lava): 10 m
• Upper limit: Unconformity
• Lower limit: Unconformity

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution (Pyroclastic rocks): Upper part of pyroclastic cone - West and East foot, Mount Asahidake, Mount Taisetsu, Hokkaido
• Distribution (Lava): Bannosawa creek, West foot, Mount Asahidake, Mount Taisetsu, Hokkaido

• Ishige and Nakagawa (2017) Jour. Geol. Soc. Japan, vol.123, no.2, pp.73-91, DOI