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J11 Tephra Tokuhashi and Endo, 1984

Abbr.: J11

• Tephra
• Pleistocene

• Lithofacies (Upper): Pumice-bearing silt
• Lithofacies (Lower): Volcanic ash

• Host: Jizodo Formation
• Thickness (Upper): ca. 15 cm
• Thickness (Lower): ca. 3 cm

• Distribution: Chiba pref.

• Tokuhashi and Endo (1984) Geology of the Anesaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 6p.)