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Ogato Lava (Kosaka et al., 2005) Mukai et al., 2009

• Type locality: 1,950 above sea level of southern slope of Mount Ogato, Matsumoto city, Nagano prefecture
• Volcanic rocks
• Pleistocene (1.32, 1.25 Ma, K-Ar)

• Lithofacies: Olivine two pyroxene andesite
• Lithofacies: Block lava (a flow unit)

• Eruptive volume: 0.25 km³
• Thickness (Mount Ogato): ca. 50 m
• Thickness (Mount Chausu): ca. 100 m
• Lower limit: Unconformity (Upper Ogahana Lava, Hyakumagari Volcaniclastics)

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

• Distribution: 1,900 - 2,000 above sea level of Mount Ogato - Mount Chausu, Matsumoto city, Nagano pref.

• Mukai et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.8, pp.400-422 DOI