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Joyama Formation

• Coherent formation
• Pliocene - early Pleistocene

• Lithofacies: Conglomerate

• Thickness: 100 m or thicker

• Distribution: Kochi pref.

• Wakita et al. (2007) Geology of the Ino District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 140p. (in Japanese with English abstract 4p.)