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Ogo Pumice Flow Deposit Arai, 1962
- Type locality: Arato river, Ogo, Maebashi city, Gunma prefecture
- Volcanic rocks
- Caldera-forming pyroclastic flow deposit
- Pleistocene (ca. 65 ka)
- Correlation: Ag-MzP1 Tephra
- Sedimentary facies: Terrestrial
- Lithofacies: Hornblende-bearing orthopyroxene clinopyroxene andesite
- Lithofacies: Pumiceous lapilli tuff, Lapilli tuff (welll-developed flow units)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Arato river, Ogo, Maebashi city, Gunma pref.; Minazawa, Fujimi village, Maebashi city, Gunma pref.; Miyosawa village, Maebashi city, Gunma pref.; Motojuku, Kiryu city, Gunma pref.; Kawaguchi river, Kurohone town, Kiryu city, Gunma pref.
- Ito et al. (2022) Geology of the Kiryu and Ashikaga District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)
- Yamamoto (2016) Jour. Geol. Soc. Japan, vol.122, no.3, pp.109-126, DOI