[ Top ] [ Japanese ]

Kh-Od Tephra

Abbr.: Kh-Od

Invalid synonym: Odp, OD, KA

• Tephra
• Pleistocene (0.61 Ma, FT???)

• Lithofacies (Upper): Sands, Pumiceous silt
• Lithofacies (Middle): Volcanic ash
• Lithofacies (Lower): Volcanic ash
• Sedimentary structures (Upper): Cross stratification

• Host: Higher II Terrace Deposits, Hirayama Loam, Kaisaka Loam
• Thickness (Upper): 80 - 100 cm
• Thickness (Middle): ca. 30 cm
• Thickness (Lower): ca. 5 cm
• Upper limit: Loam
• Lower limit: Unconformity (Nagahara Lava, Mikaerisaka Lava)

• Distribution: Odaira, Sanjo city, Niigata pref.; Mount Takayuka, 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.)
• Kobayashi et al. (2002) Geology of the Sanjo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 98p. (in Japanese with English abstract 4p.)
• Yanagisawa et al. (2000) Geology of the Iiyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 144p. (in Japanese with English abstract 6p.)