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Hata Loam

• Loam
• late Pleistocene, Last Glacial Period

• Lithofacies: Loam (Silty volcanic ash soil)

• Source: Norikura volcano
• Thickness: 1 - 2 m
• Lower limit: Conformity (Hario Gravel), Unconformity (Hata Gravel Bed, Moriguchi Gravel Bed, Kakizawa Gravel)

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

• Distribution: Nakayama - Asama hotspring, Matsumoto city, Nagano pref.; Kataoka - Osakada - Kikyogahara - Nagasaki, Shiojiri city, Nagano pref.; Komi - Onozawa - Hario - Imai, Asahi city, Higashichikuma county, Nagano pref.
• Tephra: AT

• Harayama et al. (2009) Geology of the Matsumoto District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 63p. (in Japanese with English abstract 3p.)
• Katada and Isomi (1964) Shiojiri, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 52p. (in Japanese with English abstract 10p.)