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Akagawa Lavas Ota and Katada, 1955
- Lithofacies: Olivine-bearing orthopyroxene-clinopyroxene andesite
- Upper limit: Unconformity
- Lower limit: Unconformity
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Upper reaches of Manza river - Mount Akagawayama - Akagawa river, Tsumagoi city, Agatsuma county, Gunma pref.
- Nishiki et al. (2014) Jour. Geol. Soc. Japan, vol.120, no.3, pp.89-103 DOI
- Ota and Katada (1955) Suzaka, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 54p. (in Japanese with English abstract 6p.)