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Akatsuki Ash Layer

• Tephra
• middle Pleistocene
• Correlation: BB195 (ca. 170 ka)

• Lithofacies: Vitreous volcanic ash

• Host: Akatsukikaido Member
• Thickness: 20 cm

• Distribution: Aebano, Takashima city, Shiga pref.

• Kimura et al. (2001) Geology of the Kitakomatsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 102p. (in Japanese with English abstract 5p.)
• Nakae et al. (2001) Geology of the Chikubu Shima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 71p. (in Japanese with English abstract 5p.)
• Ishida et al. (1984) Geology of the Hikone-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 6p.)