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Senjogataki Formation

• Coherent formation
• Paleozoic volcanic island arc
• Silurian - Devonian

• Lithofacies (Upper): Clastic rocks
• Lithofacies (Middle): Siliceous mudstone, Tuff
• Lithofacies (Lower): Basalt - Andesite

• Upper limit: Unconformity (Kogawa Formation)
• Lower limit: Kagura Igneous Rocks

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

• Distribution: Kamaishi, Iwate pref.

• Ehiro and Morikiyo (2013) Jour. Geol. Soc. Japan, vol.119, Supplement, pp.47-67 DOI