[ Top ] [ Japanese ]

Ise Formation

• Type locality: Ishikura, Hayashida town, Himeji city, Hyogo prefecture
• Volcanic rocks
• Late Cretaceous
• Intruded by: Sakurayama Body, Diorite porphyry

• Sedimentary facies (Upper): Lacustrine
• Sedimentary facies (Lower): Large scale caldera-fill deposit, Caldera collapse deposit
• Lithofacies (Lower): Rhyolite pyroclastic flow deposits
• Lithofacies (Lower, Minor): Debris avalanche deposit
• Lithofacies (Upper): Conglomerate, Sandstone, Interbedded sandstone and siltstone
• Lithofacies (Lower): Lapilli tuff, Tuff breccia, Breccia
• Sedimentary structures (Upper): Graded bedding, Reversed graded bedding, Parallel stratification
• Sedimentary structures (Lower): Columnar joints

• Thickness (Upper): ca. 100 m
• Thickness (Lower): ca. 250 m
• Upper limit: Unconformity (Matobayama Formation, Yumesaki Formation)
• Lower limit: Unconformity (Hiromine Formation, Hayashida Formation)

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

• Distribution: Shimoise - Aino - Ishikura - Hayashida - Shikisai, Himeji city, Hyogo pref.; Higashihashisaki - Keyakizaka - Sogai, Tatsuno city, Hyogo pref.

• Yamamoto et al. (2002) Geology of the Yamasaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 48p. (in Japanese with English abstract 4p.)
• Yamamoto et al. (2000) Geology of the Tatsuno District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 66p. (in Japanese with English abstract 5p.)
• Igi and Wadatsumi (1980) Geology of the Kamigori District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 74p. (in Japanese with English abstract 4p.)