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Mikasa Group

• Coherent formation
• early Miocene

• Sedimentary facies: Shallow marine
• Sedimentary facies: Forearc basin deposit
• Lithofacies:

• Upper limit: Unconformity (Sagara Group)
• Lower limit: Unconformity (Mikura Group, Tawarazawa Sheet)

• Ozaki and Sugiyama (2018) Geology of the Minobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 169p. (in Japanese with English abstract 7p.)
• Sugiyama and Shimokawa (1990) Geology of the Shimizu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 8p.)
• Sugiyama et al. (1982) Geology of the Shizuoka District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 82p. (in Japanese with English abstract 9p.)