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Mizusawayama Lava

• Type locality: summit of Mount Mizusawayama, Mizusawa, Ikaho town, Shibukawa city, Gunma prefecture
• Volcanic rocks
• Mizusawayama lava dome
• late Pleistocene (ca. 10 ka)
• Contemporaneous heterotopic facies: Mizusawayama Pyroclastic Flow Deposit and Talus Deposit

• Sedimentary facies: Terrestrial
• Lithofacies: Calc-alkaline
• Lithofacies: Orthopyroxene hornblende andesite lava

• Distribution (Height): ca. 500 m
• Area: 1.4 km²
• Volume: 0.08 km³
• Upper limit: Unconformity (Hr-FP Tephra)
• Lower limit: Unconformity (Older Haruna Volcanic Products, As-YP Tephra)

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

• Distribution: Mount Haruna, Gunma pref.

• Geshi and Takeuchi (2012) Geology of the Haruna San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 79p. (in Japanese with English abstract 3p.)