[ Top ] [ Japanese ]

Kibyu Volcaniclastic Rocks

• Volcanic rocks
• middle Pleistocene

• Lithofacies (Upper): Pumiceous tuff, Tuff, Siltstone
• Lithofacies (Lower): Tuff breccia, Lapilli tuff
• Sedimentary structures (Upper): Parallel stratification

• Thickness (Upper): 15 m or thicker
• Thickness: 30 - 35 m or thicker
• Upper limit: Unconformity (Sencho Lava)
• Lower limit: Unconformity (Kibyu Lava, Nyukawa Pyroclastic Flow Deposit)

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

• Distribution: Kibyugawa river - Shiozo valley, Takane town, Takayama city, Gifu pref.

• Nakano et al. (1995) Geology of the Norikuradake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 139p. (in Japanese with English abstract 4p.)