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Tarumoto Pyroclastic Rock Member Saito, 1962

Invalid synonyms: Tarumoto Pyroclastics Member

• Type locality: Tomikura, Iiyama city, Nagano prefecture - Nagasawa, Myoko city, Niigata prefecture
• Volcanic rocks
• late Miocene - early Pliocene (5.7, 5.2 Ma, K-Ar)
• Intruded by: Granodiorite porphyry

• Sedimentary facies: Marine
• Sedimentary facies: Basin floor, Continental slope
• Lithofacies: Hypersthene augite andesite lava, Volcanic breccia, Tuff breccia
• Lithofacies (Minor): Mudstone, Tuffaceous sandstone, Conglomerate, Felsic tuff

• Thickness: 0 - 350 m
• Upper limit: Unconformity (Madaraohokubu Lava)

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

• Distribution: Tomikura - Takinowaki, Iiyama city, Nagano pref.; Nagasawa, Myoko city, Niigata pref.

• Yanagisawa et al. (2000) Geology of the Iiyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 144p. (in Japanese with English abstract 6p.)