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Sangun Metamorphic Belt, Sangun Metamorphic Rocks

A general term including more than 2 different metamorphic belts.

• High P/T metamorphic rocks
• Metamorphism: early Carboniferous - Late Jurassic
• Intruded by: Mochigase Granite, Porphyrite dikes, Andesite dikes, Diorite dikes, Biotite granite, Hornblende biotite granite

• Metamorphic facies: Pumpellyite-Actinolite, Blueschist
• Lithofacies: Mafic rocks, Pelitic rocks
• Lithofacies (Minor): Serpentine
• Lithofacies (Protolith): Slate, Phyllite, Chert
• Lithofacies (Protolith, Minor): Sandstone, Basalt lava, Calcareous rocks

• Upper limit: Unconformity (Tsukudani Formation, Koge Formation, Kawabara Volcanic Member, Teragi Group, Nagisan Andesites, Obatake Rhyolite, Gandoya Tuff Breccia, Tsugawagawa Conglomerate, Yodo Basalt Lava, Kuroiwa Basalt Lava)
• Lower limit: Thrust fault (Akiyoshi Belt)

• Distribution: Hokuriku region - Kinki region - Sanin region - Kyushu region - Okinawa islands
• Distribution: Wakasa city, Yazu county, Tottori pref.; Saji - Shimobira - Daiankoji temple - Wanami, Tottori city, Tottori pref.; Ebi, Kofu city, Hino county, Tottori pref.; Neu, Hino city, Hino county, Tottori pref.; Chizu city, Yazu county, Tottori pref.; Saji town, Tottori city, Tottori pref.; Kamisaibara - Okutsu - Yoshiigawa river, Kagamino city, Tomata county, Okayama pref.; Mount Tsunogasen - Mount Daigasen, Tsuyama city, Okayama pref.; Sasaguri city, Kasuya county, Fukuoka pref.

• Fukami and Owada (2017) Jour. Geol. Soc. Japan, vol.123, no.12, pp.1055-1060 DOI
• Kitano and Ikeda (2012) Jour. Geol. Soc. Japan, vol.118, no.12, pp.801-809 DOI
• Machi and Ishiwatari (2010) Jour. Geol. Soc. Japan, vol.116, no.6, pp.293-308 DOI
• Kano et al. (2001) Geology of the Yunotsu and Gotsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 129p. (in Japanese with English abstract 5p.)
• Uemura et al. (1979) Geology of the Wakasa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 91p. (in Japanese with English abstract 8p.)
• Yamada (1966) Chizu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 69p. (in Japanese with English abstract 11p.)
• Hattori and Katada (1964) Neu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 49p. (in Japanese with English abstract 9p.)
• Murayama et al. (1963) Tottorihokubu & Tottorinambu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 66p. (in Japanese with English abstract 8p.)
• Yamada (1961) Okutsu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 51p. (in Japanese with English abstract 9p.)