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GP Tephra

Abbr.: GP

Invalid synonym: AK

• Type locality: boundary between Shirahama town - Chikura town, Minamiboso city, Chiba prefecture
• Tephra
• Pliocene

• Lithofacies: Tuffaceous sands

• Host: Shiramazu Formation
• Thickness: ca. 9 m

• Distribution: boundary between Shirahama town - Chikura town, Minamiboso city, Chiba pref.; Takiyama, Shirahama 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.)