[ Top ] [ Japanese ]

Zengyo Gravel Oka et al., 1979

Invalid synonym: Amaderahara Formation

• Type locality: Zengyo, Fujisawa city, Kanagawa prefecture
• Coherent formation
• Terrace deposit
• Pleistocene
• Correlation: Obaradai Sand and Gravel Formation

• Sedimentary facies: Fluvial
• Sedimentary facies: Alluvial fan
• Lithofacies: Gravels

• Thickness: ca. 2.5 - 6 m
• Upper limit: Conformity (Shimosueyoshi Loam), Unconformity (Tachikawa Loam)
• Lower limit: Unconformity (Tsuchiya Formation, Shimosueyoshi Formation)

• Distribution: Zengyo, Fujisawa city, Kanagawa pref.
• Tephra: Hk-OP

• Mitsunashi and Kikuchi (1982) Geology of the Yokohama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 105p. (in Japanese with English abstract 4p.)
• Oka et al. (1979) Geology of the Fujisawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 5p.)