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Arakuragawa Lava Nishiki et al., 2007

Abbr.: AR

• Type locality: 1,540 m above sea level of Arakura river, Sakuho city, Minamisaku county, Nagano prefecture
• Volcanic rocks
• Pleistocene (0.28 Ma, K-Ar)

• Lithofacies: Olivine orthopyroxene clinopyroxene andesite
• Lithofacies: Lava (a flow unit)

• Thickness (A unit): ca. 30 m
• Upper limit: Shirakomaike-toho Lavas
• Lower limit: Kengamine-east Lavas

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

• Distribution: 1,400 - 1,700 m above sea level of Arakura river, Sakuho city, Minamisaku county, Nagano pref.

• Nishiki et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.5, pp.193-211 DOI