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Km4 Tephra Tokuhashi and Endo, 1984

Abbr.: Km4

Invalid synonym: Ki-II

• Tephra
• Pleistocene

• Lithofacies: Pumice
• Lithofacies (Basal): Scoria

• Host: Kamiizumi Formation
• Thickness: ca. 10 - 40 cm
• Thickness (Basal): ca. 5 cm or thinner

• Distribution: Kometa? - Kawaharai, Sodegaura city, Chiba pref.; Saitama pref.

• Nakazawa and Tanabe (2011) Geology of the Noda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 72p. (in Japanese with English abstract 3p.)
• Tokuhashi and Endo (1984) Geology of the Anesaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 6p.)