[ Top ] [ Japanese ]

Tamaze Formation (Yoshida, 1975) Matsuura et al., 1995

Invalid synonym: Tamaze Welded Tuff, Gennoike Clastic Rocks, Gennoike Formation, Nagaoyama Lava, Tsukunami Lava, Yamada Formation

• Type locality (Welded tuff): Takedaotsuji, Tamase, Takarazuka city, Hyogo prefecture
• Type locality (Others): Ginzan - Manzen, Inagawa city, Kawabe county, Hyogo prefecture
• Volcanic rocks
• Late Cretaceous (72.1, 70.7 Ma, K-Ar)
• Correlation: Rurikei Formation, Kamogawa Formation, Tsukuhara Formation
• Intruded by: Kawashimogawa Quartz Diorite, Mikusayama Granitic Complex, Rokko Granite, Kongodoji Lava, Rhyolite dikes, Granite porphyry dikes

• Lithofacies: Biotite rhyolitic welded tuff
• Lithofacies (Minor): Tuffaceous sandstone, Conglomerate, Tuff, Rhyolite lava, Mudstone, Hornfels
• Sedimentary structures: Eutaxitic structure

• Thickness: ca. 300 - 840 m
• Distribution (Width): ca. 30 km
• Upper limit: Unconformity (Sakaino Formation, Tsukuhara Formation), Abut unconformity (Tanjosan Tuff Breccia)
• Lower limit: Conformity (Takedao Formation), Unconformity (Inagawa Complex, Minoo Complex)

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

• Distribution: Tamase - Takedao - Mukogawa river - Toriwaki - Nakayama - Kawashimogawa river, Takarazuka city, Hyogo pref.; Hirata, Dojo town, Kobe city, Hyogo pref.; Lake Gennoike, Ginzan, Kawanishi city, Hyogo pref.; Henmyoin temple - Toishigawa river, Sanda city, Hyogo pref.; Najio - Horaikyo valley, Nishinomiya city, Hyogo pref.; Najio - Horaikyo valley, Nishinomiya city, Hyogo pref.; Ginzan - Manzen - Ninbe - Byobuiwa - Mount Ipponmatsuyama, Inagawa city, Kawabe county, Hyogo pref.; Dojo - Funasakagawa river - Arima hot spring - Mount Taishakusan - Mount Hogasan - Mount Shakunagesan, Kobe city, Hyogo pref.

• Matsuura et al. (1995) Geology of the Hirone District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 110p. (in Japanese with English abstract 6p.)
• Kurimoto et al. (1993) Geology of the Sasayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)
• Ozaki and Matsuura (1988) Geology of the Sanda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)
• Huzita and Kasama (1983) Geology of the Kobe District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 115p. (in Japanese with English abstract 8p.)
• Huzita and Kasama (1982) Geology of the Osaka-Seihokubu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 112p. (in Japanese with English abstract 8p.)