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Harachiyama Formation Ishii et al., 1953

It had been defined as a member of Taro Belt. Nowadays, it is interpreted as a part of Akka-Tanohata Sub-belt in North Kitakami Belt.

Invalid synonym: Takinoshirizawa Formation, Matsumaezawa Formation

• Type locality: Mount Harachi,, Miyako city, Iwate prefecture
• Accretionary complex
• Volcanic rocks
• Accretion: Jurassic
• Intruded by: Miyako Granite, Tanohata Granite, Taro Granite, Kurumihata Granite, Oura Granite, Jodogahama Rhyolite

• Lithofacies: Andesite lava, Volcanic breccia, Tuff breccia, Dacite (Keratophyre), Porphyry, Mudstone, Tuffaceous sandstone, Sandstone, Chert

• Thickness: 600 - 1,500 m
• Upper limit: Unconformity (Miyako Group)

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

• Distribution: Mount Harachi, Miyako city, Iwate pref.; Jodogahama seashore, Miyako city, Iwate pref.; Horiuchi - Shirahama - Mount Osawa, Miyako city, Iwate pref.; Mount Karogadake - Cape Onegasaki - Oura - Koyadori - Osawa, Yamada city, Shimohei county, 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.)