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Osawa type

• Plutonic rocks
• Zoned pluton
• Early Cretaceous

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

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

• Distribution: Iwate pref.

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