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Wakasano Formation Sato et al., 2016

• Type locality: Amauchi - Sagata, Wakasano town, Aioi city, Hyogo prefecture
• Volcanic rocks
• Late Cretaceous
• Intruded by: Tenkadaiyama Rhyolite

• Sedimentary facies: Caldera-fill deposits
• Sedimentary facies (Minor): Lacustrine
• Lithofacies: Pyroclastic flow deposits
• Lithofacies: Hornblende-bearing biotite rhyolite welded crystalline tuff
• Lithofacies (Minor): Tuffaceous siltstone, Sandstone, Conglomerate

• Thickness: ca. 260 m
• Lower limit: Unconformity (Ako Formation)

• Distribution: Amauchi - Sagata, Wakasano town, Aioi city, Hyogo pref.; Suse, Ako city, Hyogo pref.

• Sato et al. (2016) Geology of the Banshu-Ako District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 68p. (in Japanese with English abstract 3p.)