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Hatta Tephra

• Type locality: Hatta, Minakuchi town, Koka city, Shiga prefecture
• Tephra
• Pleistocene
• Correlation: Ng-1

• Lithofacies: Crystalline volcanic ash
• Sedimentary structures: Trough cross-stratification, Parallel stratification

• Thickness: ca. 10 - 35 cm
• Host: Yokigaoka Clays Member, Upper part of Osaka Group

• Distribution: Hatta, Minakuchi town, Koka city, Shiga pref.

• Yoshida et al. (2003) Geology of the Omi-Hachiman District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 72p. (in Japanese with English abstract 3p.)
• Miyachi et al. (2001) Geology of the Osaka-Tohokubu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 130p. (in Japanese with English abstract 6p.)
• Ozaki et al. (2000) Geology of the Nara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 162p. (in Japanese with English abstract 5p.)
• Miyachi et al. (1998) Geology of the Osaka-Tonambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 113p. (in Japanese with English abstract 5p.)