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

• Type locality: 1,500 above sea level of the left bank of Nakayama creek, Matsumoto city, Nagano prefecture
• Volcanic rocks
• Pleistocene

• Lithofacies: Hornblende two pyroxene andesite lava

• Eruptive volume: 0.35 km³
• Thickness: ca. 150 m
• Upper limit: Unconformity (Lower Ogahana Lava)
• Lower limit: Unconformity (Sanjiro Volcaniclastics)

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

• Distribution: 1,500 - 1,650 m above sea level of Nakayama creek, Matsumoto city, Nagano pref.

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