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Kamogawa Terrace Deposit

• Coherent formation
• Holocene (7,350 - 6,880 yBP, ¹⁴C)

• Sedimentary facies (Top): River terrace deposit
• Sedimentary facies: Coastal terrace deposit
• Sedimentary facies (Upper, Middle): Inner bay, Tidal zone, Shallow marine
• Water temperature: Warm ocean current
• Lithofacies (Top): Sands, Gravels
• Lithofacies (Upper): Sands
• Lithofacies (Middle): Clay, Silt, Sandy silt
• Lithofacies (Lower): Sands, Gravels

• Thickness: ca. 30 - 40 m or thicker
• Thickness (Top): 0.5 - 1 m
• Thickness (Upper): ca. 2 - 10 m
• Thickness (Middle): 30 m or thicker

• Distribution: Chiba pref.
• Fossils (Upper, Middle): Balaenoptera physalus, Crabs, Barnacles, Echinoids (Echinarachnis mirabilis)
• Fossils (Upper, Middle, Shellfishes): Babylonia japonica, Batillaria zonalis, Cerithidea djadjariensis, Crepidula gravispinosa, Cyclina sinensis, Macoma sectior, Mactra crossei, Meretrix lamarckii, Olivella fulgurata, Ostrea gigas, Sunetta menstrualis, Umbonium costatum, Umbonium giganteum
• Fossils (Upper, Trace fossils): Excirolana sp.

• Nakajima et al. (1981) Geology of the Kamogawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 107p. (in Japanese with English abstract 7p.)