[ Top ] [ Japanese ]

Kumagatake Lower Pyroclastic Rock and Lava Ishige and Nakagawa, 2017

Abbr. KL

• Type locality: 1,790 m above sea level, North foot, Mount Kumagatake, Mount Taisetsu, Hokkaido
• Volcanic rocks
• Pleistocene

• Lithofacies: Lava, Pyroclastic rocks
• Lithofacies (Crater): Welded pyroclastic rocks composed of scoria
• Lithofacies: Clinopyroxene-orthopyroxene andesite

• Source: Kumagatake summit No.1 crater
• Eruptive volume: 0.4 km³ DRE
• Thickness (Lava): 10 m or thinner
• Thickness (Pyroclastic rocks): 4 m
• Upper limit: Unconformity
• Lower limit: Unconformity

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

• Distribution: East - North - South of Mount Kumagatake, Mount Taisetsu, Hokkaido

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