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Yasugi Formation

• Coherent formation
• Pleistocene
• Correlation: Sashimi Formation

• Upper limit: Conformity? (Nakaumi Formation)
• Lower limit: Unconformity (Daikonjima Basalt?, Eshima Basalt?, Yumigahama Sandbar?)

• Distribution: Daikon island - Eshima island, Yatsuka village, Matsue city, Shimane pref.
• Tephra: SK

• Sawada et al. (2009) Jour. Geol. Soc. Japan, vol.115, Supplement, pp.51-70 DOI
• Kano et al. (1991) Geology of the Imaichi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 5p.)