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Terao Pyroclastic Flow Deposit Hayatsu, 1985

Invalid synonym: Hanabusa Pyroclastic Flow Deposit

• Type locality: Terao, Myoko city, Niigata prefecture
• Volcanic rocks
• middle Pleistocene
• Correlation: Higher 2 Terrace Deposit

• Lithofacies: Pyroclastic flow deposit, Hornblende hypersthene andesite volcanic breccia, Tuff breccia
• Lithofacies (Minor): Tuffaceous sands

• Source: Myoko volcano
• Thickness: 10 - 50 m or thicker
• Upper limit: Unconformity (Oshika Scoria Group)
• Lower limit: Abut unconformity (Ogawa Formation)

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

• Distribution: Terao - Ogai, 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.)