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Azy-SgP2 Tephra

Abbr.: Azy-SgP2

Invalid synonym: SgP.2

• Tephra
• Pleistocene
• Correlation: Amanokawa Pumice (210 ka, FT), Mihara Tuff (220 ka, FT), Osafuji? Pumice, YoP-2

• Lithofacies: Cummingtonite bearing

• Source: Azumaya volcano
• Thickness: 20 cm

• Distribution: Sugadairakogen, Ueda city, Nagano pref.

• Ito et al. (2022) Geology of the Kiryu and Ashikaga District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)
• Nakazato and Nakazawa (2007) Jour. Geol. Soc. Japan, vol.113, no.12, pp.628-635 DOI