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KH1 Tephra (Niitsuma, 1976) Tamura et al., 2019

Abbr.: KH1

Invalid synonym: KH, Kr6

• Type locality: Kushihama, Katsuura city, Chiba prefecture
• Tephra
• Pleistocene
• Correlation: Obr-Bnd1

• Lithofacies: Tuff

• Host: Katsuura Formation
• Thickness: 5 cm

• Distribution: Kushihama, Katsuura city, Chiba pref.; Kohazuki seashore, Iwawada, Isumi city, Chiba 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.)
• Tamura et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.1, pp.23-39 DOI