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Tn-GP Tephra Tamura et al., 2010

Abbr.: Tn-GP

Synonym: Na-G, KT1217, KGP, Mk19

• Tephra
• Pleistocene (2.5 Ma)
• Correlation?: Hosokawadani Rhyolite

• Lithofacies: Pumiceous tephra

• Thickness: 10 - 15 cm
• Source: Tanzawa mountains
• Host: Naarai Formation, Otsuka Formation, Urago Formation

• Distribution: Port Naarai, Choshi city, Chiba pref.; Imaizumi, Kamakura city, Kanagawa pref.; Mutsukura, Aikawa city, Aiko county, 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.)
• Tamura et al. (2010) Jour. Geol. Soc. Japan, vol.116, no.7, pp.360-373 DOI