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Omi White Tuffs

• Volcanic rocks
• Miocene
• Intruded by: Dacite stocks, Sills

• Lithofacies: Hypersthene series
• Lithofacies (Upper): Dacite tuff breccia, Volcanic breccia
• Lithofacies (Upper, Minor): Sandstone, Mudstone
• Lithofacies (Lower): Andesite tuff breccia, Volcanic conglomerate
• Lithofacies (Lower, Minor): Andesite lava

• Upper limit: Unconformity (Kano Andesites, Koshimoda Andesites, Jo Formation)
• Lower limit: Unconformity (Yugashima Propylites)

• Distribution: Kamiomi - Jizodo - Komine seashore - Yagisawa, Izu city, Shizuoka pref.
• Fossils (Shellfishes): Patinopecten planicostulatus

• Sawamura (1955) Shuzenji, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 47p. (in Japanese with English abstract 4p.)