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Futagoike Lava

• Volcanic rocks
• Pleistocene

• Lithofacies: Augite hypersthene andesite lava

• Source: Flank Lake Nanatsuike, a crater of Mount Yokodake
• Thickness: 60 m or thicker
• Distribution (Width): 500 m
• Running distance: ca. 2,000 m

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

• Distribution: Lake Futagoike - Lake Kikkoike, Sakuho city, Minamisaku county, Nagano pref.

• Kawachi (1974) Geology of the Tateshinayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 5p.)