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Ng-YR Tephra Kanagawa prefecture, 1955

Abbr.: Ng-YR

Invalid synonym: YR2-Kd21, Ng

• Tephra
• Pleistocene (1.42 Ma)

• Lithofacies: Vitreous tephra

• Source: Chubusangaku area
• Thickness: 25 - 40 cm
• Host: Inagi Formation, Kakio Formation, Ozenji Formation

• Distribution: Anazawa shrine, Yanokuchi, Inagi city, Tokyo; Nekata, Inagi city, Tokyo; Kamiaso, Aso ward, Kawasaki city, Kanagawa pref.; Mamedo town, Kohoku ward, Yokohama city, Kanagawa pref.

• 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.)
• Oka et al. (1984) Geology of the Tokyo-Seinambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 148p. (in Japanese with English abstract 7p.)