[ Top ] [ Japanese ]

Is Tephra

Abbr.: Is

• Type locality: Kotaki, Isumi city, Chiba prefecture
• Tephra
• Holocene (ca. 8 ka; 8,030, 7,967, 7,816 yBP, ¹⁴C)

• Lithofacies: Tephra

• Host: Tachikawa Loam

• Distribution: Nakano, Otaki city, Isumi county, Chiba pref.; Kotaki - Hosoo, Isumi city, Chiba pref.; Sumita, Mobara city, Chiba pref.; Shimonogo, Mutsuzawa city, Isumi county, 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.)