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Hosoyama Tuff

• Tephra
• Pleistocene

• Lithofacies: Pumiceous tephra

• Host: Dedana Formation

• Distribution: Tokyo

• 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.)