[ Top ] [ Japanese ]

U6A Tephra

Abbr.: U6A

• Tephra
• Pleistocene (0.98 Ma, FT)

• Lithofacies: Pumice

• Thickness: ca. 20 m
• Host: Umegase Formation, Koshiba Formation

• Distribution: Ichinono, Misaki town, Isumi city, Chiba pref.; Seagezawa creek, Isogo ward, Yokohama city, 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.)
• 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.)
• 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.)