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Kd19 Tephra

Abbr.: Kd19

Invalid synonym: Iwase Tuff

• Tephra
• Pleistocene

• Lithofacies: Tuff

• Thickness: ca. 150 cm
• Host: Kiwada Formation, Ofuna Formation

• Distribution: Chiba pref.; Kanagawa pref.

• Utsunomiya and Ooi (2019) Geology of the Kazusa-Ohara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 127p. (in Japanese with English abstract 4p.)
• Mitsunashi and Kikuchi (1982) Geology of the Yokohama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 105p. (in Japanese with English abstract 4p.)