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Miyako Granite

• Type locality: Miyako city, Iwate prefecture
• Plutonic rocks
• Zoned pluton
• Early Cretaceous (135 - 110 Ma, K-Ar)
• Intruded in: North Kitakami Belt, Harachiyama Formation, Toyomane Formation, Hanawa Formation

• Lithofacies: I-type (Ilmenite series)
• Lithofacies (Central facies): Adakitic, Felsic
• Lithofacies (Marginal facies): Adakitic, Mafic
• Lithofacies: Quartz diorite, Tonalite, Granodiorite

• Distribution (East-West): ca. 20 km
• Distribution (South-North): ca. 50 km
• Upper limit: Unconformity (Raga Formation, Miyako Group)

------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Iwaizumi city, Shimohei county - Miyako city - Kamaishi city, Iwate pref.

• Tsuchiya et al. (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.159-179 DOI
• Yoshida and Katada (1984) Geology of the Miyako District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 44p. (in Japanese with English abstract 6p.)
• Shimazu et al. (1970) Geology of the Taro District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 54p. (in Japanese with English abstract 6p.)
• Yoshida and Katada (1964) Otsuchi and Karodake, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 30p. (in Japanese with English abstract 6p.)
• Yoshida (1961) Kamaishi, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 26p. (in Japanese with English abstract 5p.)