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Nakamura Formation

• Coherent formation
• Pleistocene

• Lithofacies: Peat

• Lower limit: Unconformity (Nagakura Formation)

• Distribution: Nagano pref.
• Tephra: On-Pm1

• Kawachi (1974) Geology of the Tateshinayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 5p.)