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Matsuhashi High-Mg Andesite

• Type locality: Matsuhashi, Iwaizumi city, Shimohei county, Iwate prefecture
• Volcanic rocks
• Eocene (ca. 40 Ma)
• Intruded in: Matsuhashi Formation (Pre-Cretaceous), Kogawa Group

• Lithofacies: I-type
• Lithofacies: Adakitic
• Lithofacies: Aphyric andesite, Olivine andesite

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

• Distribution: Masuhashi river, Matsuhashi, Iwaizumi city, Shimohei county, Iwate pref.

• Tsuchiya et al. (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.159-179 DOI