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K-Tz Tephra Nagaoka, 1988

Abbr.: K-Tz

• Tephra
• Pleistocene (76.9 ka, TL, 98 ka, FT)
• Correlation: Ka-2?

• Lithofacies: Tuff

• Source: Kikai caldera, Kagoshima pref., Japan
• Thickness: 15 cm
• Host: Omiya Formation, Shimosueyoshi Loam, Ecchu Loam, Middle II Terrace Deposit, Hekikai Formation

• Distribution: all over Japan
• Distribution: Junikanno - Otozawa, Kurobe city, Toyama pref.; Tanayama, Asahi city, Shimoniikawa county, Toyama pref.; Nomugitoge pass, Takane town, Takayama city, Gifu pref.

• Okuno (2019) Jour. Geol. Soc. Japan, vol.125, no.1, pp.41-53 DOI
• Takeuchi et al. (2017) Geology of the Tomari District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 121p. (in Japanese with English abstract 4p.)
• Ueki et al. (2013) Geology of the Hachioji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 137p. (in Japanese with English abstract 6p.)
• Nakano et al. (1995) Geology of the Norikuradake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 139p. (in Japanese with English abstract 4p.)