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Tsurumi Formation (Association for Kanto Quaternary research, 1970) Kawasaki city, 1981

Invalid synonym: Tsuchihashi Formation

• Type locality: Fujigaoka, Midori ward, Yokohama city, Kanagawa prefecture
• Coherent formation
• Pleistocene
• Correlation: Tsuchiya Formation

• Sedimentary facies (Upper): Terrestrial
• Sedimentary facies (Middle): Marine
• Sedimentary facies (Lower): Terrestrial
• Sedimentary facies (Upper): Valley-fill deposit
• Lithofacies (Upper): Gravels
• Lithofacies (Middle): Sands, Mud
• Lithofacies (Basal): Gravels

• Thickness: 30 m
• Upper limit: Unconformity (Shimosueyoshi Formation, Terao Formation, Obaradai Sand and Gravel Formation, Tsuchiya Loam, Nakadai Formation)
• Lower limit: Unconformity (Kazusa Group)

• Distribution: Fujigaoka, Midori ward, Yokohama city, Kanagawa pref.; Goshozuka, Miyamae ward, Kawasaki city, Kanagawa pref.; Sakurajosui, Setagaya ward, Tokyo
• Fossils: Shellfishes
• Fossils (Plants): Alnus japonica, Carex sp., Lycopus sp., Quercus sp., Tubocapsicum sp., Viola sp.
• Fossils (Plants, Pollen): Abies sp., Acer sp., cf. Aconitum sp., Adenophora sp., Alnus sp., Aphananthe sp., Artemisia sp., Betula sp., Carpinus sp., Celtis sp., Corylus sp., Cyperaceae, Cryptomeria sp., Cyperaceae, Eriocaulon sp., Euptelea sp., Fagus sp., Fraxinus sp., Galium sp., Gramineae, Juglans sp., cf. Labiatae, Larix sp., Ligustrum sp., Liliaceae, Liquliflorae, Lythrum sp., Menyanthes sp., Ostrya sp., Picea sp., Pinus sp., Plantago sp., Polygonum sp., cf. Potamogeton sp., Pteridophyta sp., Pterocarya sp., Quercus sp., Ranunculaceae, rumex sp., Sagittaria sp., Salix sp., Sanguisorba sp., cf. Sapium sp., Sciadopitys sp., cf. Thalictrum sp., Tilia sp., Tsuga sp., Typha sp., Ulmus sp., Umbelliferae, Zelkova sp.
• Tephra: DP, UP, OyP

• Oka et al. (1984) Geology of the Tokyo-Seinambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 148p. (in Japanese with English abstract 7p.)