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Asahidake Summit Pyroclastic Rock Ishige and Nakagawa, 2017

Abbr. SU

• Type locality: 2,290 m above sea level, Summit, Mount Asahidake, Mount Taisetsu, Hokkaido
• Volcanic rocks
• Pleistocene (4.9 - 4.8 ka, ¹⁴C)

• Sedimentary facies: Pyroclastic fall deposit
• Lithofacies: Welded pyroclastic rocks, Grain-supported scoria
• Lithofacies: Olivine-bearing clinopyroxene-orthopyroxene basaltic andesite - andesite

• Eruptive volume: 0.01 km³ DRE
• Thickness (Welded pyroclastic rocks): 30 m
• Upper limit: Unconformity
• Lower limit: Unconformity

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

• Distribution: Summit - West foot, Mount Asahidake, Mount Taisetsu, Hokkaido

• Ishige et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.4, pp.297-310 DOI
• Ishige and Nakagawa (2017) Jour. Geol. Soc. Japan, vol.123, no.2, pp.73-91, DOI