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SGO Tephra

Abbr.: SGO

• Tephra
• Pleistocene (1.63 Ma)
• Correlation: E1, Ob4b-1

• Lithofacies: Pumiceous tephra
• Lithofacies (Interfingered): Sands, Gravels

• Thickness: ca. 1 m
• Host: Sayama Formation

• Distribution: Sayama hills, Tokyo - Saitama pref.

• Ueki and Sakai (2007) Geology of the Ome District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 189p. (in Japanese with English abstract 5p.)