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Okumayama Granodiorite (Kano, 1973) Harayama et al., 2000

Invalid synonym: Okumayama Granite

• Plutonic rocks
• Collision type metamorphism by the subduction of Yangtze plate under Sino-Korea plate
• Jurassic (182.6 Ma, Rb-Sr)
• Intruded by: Kuranosukedan type, Sugodan Granite, Hayatsukigawa Granite, Kekachidake Granite, Oyamadan Granite, Okukurobe Granite, Kizaki Rhyolite, Kurobegawa Granite, Andesite dykes, Rhyolite dykes
• Intruded in: Hida Metamorphic Rocks, Augen mylonite

• Lithofacies: Hornblende biotite granodiorite, Quartz diorite
• Structure: Schistose

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

• Distribution: Mount Okumayama - Mount Dainichidake - Mount Okudainichidake, Kamiichi city, Nakaniikawa county, Toyama pref.; Mount Tateyama - Magawa river - Kurobegawa river, Tateyama city, Nakaniikawa county, Toyama pref.; Iwaidani valley, Toyama city, Toyama pref.

• Harayama et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.63-81 DOI
• Harayama et al. (2000) Geology of the Tateyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 218p. (in Japanese with English abstract 6p.)