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Tengumori Volcaniclastic Rocks Nakano and Tsuchiya, 1992

Invalid synonym: Tsukinohara-Narahashi Pyroclastic and Mudflow deposits

• Stratovolcano
• Volcanic rocks
• Pleistocene
• Correlation: lower Shonai Group

• Lithofacies: Olivine-bearing hypersthene augite andesite, Hypersthene-bearing augite olivine basalt
• Lithofacies: Tuff breccia, Volcanic breccia
• Lithofacies (Minor): Andesitic scoria flow deposit, Pumice flow deposit

• Upper limit: Interfingered conformity (Jozenji Formation), Unconformity (Gakkogawa Lava)
• Lower limit: Conformity (Kannonji Formation), Interfingered conformity (Jozenji Formation)

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

• Distribution: Gakko river - Shonaikumano river - Tengumori, Yuza city, Akumi county, Yamagata pref.

• Hayashi and Yamamoto (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.87-95 DOI
• Nakano and Tsuchiya (1992) Geology of the Chokaisan and Fukura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 138p. (in Japanese with English abstract 7p.)