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Sanbe Unnan Pumice

• Tephra
• Pleistocene (50 - 40 ka)

• Lithofacies: Pumice

• Source: Sanbe volcano

• Distribution: Dannohara, Takami, Onan city, Ochi county, Shimane pref.

• Matsuura (1990) Geology of the Akana District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 73p. (in Japanese with English abstract 5p.)