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SK085 Tephra Kurokawa and Sakai, 2001

Synonym.: SK085

Invalid synonym: Gjd60, Csn20, Ctwg

• Type locality: Shibanomata, Oguni town, Nagaoka city, Niigata prefecture
• Tephra
• Pliocene (ca. 1.5 Ma)

• Sedimentary facies: Submarine gravity flow deposit
• Lithofacies: Tuff
• Sedimentary structures (Lower): Parallel foliation

• Source: Niigata pref. - northeast of Nagano pref.
• Host: Minagawa Formation
• Thickness (Upper): 30 cm
• Thickness (Middle): 12 cm
• Thickness (Lower): 4 cm

• Distribution: Shibanomata, Oguni town, Nagaoka city, Niigata pref.; Taikozawa, Kamo city, Niigata pref.

• Kudo et al. (2011) Geology of the Kamo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 162p. (in Japanese with English abstract 4p.)