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Takahagi Basalt Member
- Type locality: Yamanashi prefecture
- Volcanic rocks
- Miocene
- Contemporaneous heterotopic facies: Yamaho Mudstone and Tuff Member
- Intruded by: Quartz porphyry, Basalt dykes, Quartz diorite
- Lithofacies: Basalt lava, Pillow lava, Tuff, Tuff breccia, Agglomerate
- Lithofacies (Minor): Dacite, Mudstone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Lake Saiko, Fujikawaguchiko city, Minamitsuru county, Yamanashi pref.; Ashigawa river, Ichikawamisato city, Nishiyatsushiro county, Yamanashi pref.; Mount Kenashi, Yamanashi pref.
- Nagahata et al. (2015) Jour. Geol. Soc. Japan, vol.121, no.4, pp.141-146, DOI
- Katada (1956) Kofu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 27p. (in Japanese with English abstract 4p.)