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P2 Pumice Flow Deposit

Abbr.: P2

• Tephra
• Pleistocene (11,300, 10,650 yBP, ¹⁴C)

• Lithofacies: Dacite pumice flow deposit

• Source: Asama volcano
• Thickness: 10 m or thicker
• Distribution: 100 km²
• Volume: 1.0 km³

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

• Distribution: Iwamurata - Yukawa, Saku city, Nagano pref.; Komoro castle, Komoro city, Nagano pref.

• Kawachi and Aramaki (1979) Geology of the Komoro District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 39p. (in Japanese with English abstract 2p.)