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Maekawa Lava

• Volcanic rocks
• Pleistocene

• Sedimentary facies: Composite lava flow
• Lithofacies: Quartz hornblende-bearing hypersthene augite ndesite lava (2 flow units)
• Lithofacies (Minor): Quartz augite-bearing hypersthene biotite hornblende dacite lava

• Thickness (Upper): 50 - 100 m or thicker
• Thickness (Lower): 60 m or thicker
• Upper limit: Unconformity (Takamagahara Volcaniclastic Breccia, Maekawahontani Pyroclastic Flow Deposit, Bandokoro Lava, Dakedani Lava, Kuraigahara Lava)

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

• Distribution: Maekawa river - Takamagahara, Azumi, Matsumoto city, Gifu pref.

• Nakano et al. (1995) Geology of the Norikuradake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 139p. (in Japanese with English abstract 4p.)