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Ks15 Tephra

Abbr.: Ks15

• Tephra
• Pleistocene

• Lithofacies: Pumice

• Host: Kasamori Formation, Nagahama Sand and Gravel Member
• Thickness:

• Distribution: Shibuya tunnel, Mobara city, Chiba pref.

• Nanayama et al. (2016) Geology of the Mobara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)
• Nakajima and Watanabe (2005) Geology of the Futtsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 102p. (in Japanese with English abstract 8p.)