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HG Tephra

Abbr.: HG

• Type locality: River mouth of Setogawa river, Chikura town, Minamiboso city, Chiba prefecture
• Tephra
• Miocene - Pliocene

• Lithofacies: Tuff

• Host: Nishizaki Formation

• Distribution: Nishikawana, Tateyama city, Chiba pref.; Shirako - Setogawa river, Chikura town, Minamiboso city, Chiba pref.

• Kawakami and Shishikura (2006) Geology of the Tateyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 82p. (in Japanese with English abstract 5p.)