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Yashiro Formation (Akigawa City, 1983) Ueki and Sakai, 2007

• Type locality: Hirasawa, Akiruno city, Tokyo
• Coherent formation
• Holocene (ca. 2.5 ka)

• Sedimentary facies: Fluvial
• Lithofacies: Gravels

• Thickness: 2 - 4 m

• Distribution: Hirasawa - Moriyama - Ogawa - Hikita - Yotsugi - Togo - Hataketa - Sugao - Takase - Moriyama - Setooka - Harakomiya, Akiruno city, Tokyo; Takatsuki town, Hachioji city, Tokyo; Dojo - Shukudori - Hirai, Hinode city, Nishitama county, Tokyo

• Ueki and Sakai (2007) Geology of the Ome District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 189p. (in Japanese with English abstract 5p.)