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Yuno Formation Hattori, 1978

• Coherent formation
• Pleistocene

• Lithofacies (Upper): Conglomerate, Sandstone, Tuff
• Lithofacies (Middle): Mudstone, Interbedded lapilli and tuff
• Lithofacies (Lower): Breccia, Tuff

• Thickness: ca. 485 m
• Thickness (Upper): ca. 200 m
• Thickness (Middle): ca. 220 m
• Thickness (Lower): ca. 40 m
• Distribution: ca. 2 x 2 km²
• Upper limit: Unconformity (Mikunisan Rhyolites, Serpnetinite)

• Distribution: Ashidachi - Yunogawa river - Kamiyuno - Mimuro, Niimi city, Okayama pref.

• Hattori (1978) Geology of the Kami-Iwami District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 65p. (in Japanese with English abstract 4p.)