[ Top ] [ Japanese ]

Torigakubi Formation Endo and Tateishi, 1985

• Type locality: Cape Torigakubi - Arimagawa, Joetsu city, Niigata prefecture
• Coherent formation
• late Pliocene

• Lithofacies (Upper): Tuffaceous siltstone, Sandstone
• Lithofacies (Upper, Minor): Acidic tuff, Scoria
• Lithofacies (Lower): Volcanic conglomerate

• Thickness: 60 - 80 m
• Upper limit: Unconformity (Terrace deposit)
• Lower limit: Unconformity (Arimagawa Mudstone Member)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Cape Torigakubi - Arimagawa - Nadachi-Omachi - Chayagahara, Joetsu city, Niigata pref.

• Akahane and Kato (1989) Geology of the Takada-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 89p. (in Japanese with English abstract 3p.)