Kyomatsubara Sand Bed

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Kyomatsubara Sand Bed Osada, 1980

Type locality: Kyomatsubara, Makinohara city, Shizuoka prefecture
Coherent formation
Shimosueyoshi transgression deposit
late Pleistocene (Last interglacial period)
Correlation: Kusanagi Mud Bed, Murakushi Sand Bed

Sedimentary facies: Shallow marine
Sedimentary facies: Drown valley, Wave-cut platform
Sedimentary facies: Coastal, Tidal zone
Depth of water: 10 m or shallower
Lithofacies: Sands
Lithofacies (Minor): Gravels, Silt
Sedimentary structures (Upper): Cross stratification

Thickness: ca. 5 - 12 m
Thickness (Upper): 4.5 m
Upper limit: Unconformity, partly Conformity (Makinohara Gravel Bed)
Lower limit: Conformity (Furuya Mud Bed), Unconformity (Sagara Group)

Makinohara Terrace Deposits
[ Upper ]
--------------
Ochii Gravel Bed
--------------
Makinohara Gravel Bed
~~~~~~~-------
Kyomatsubara Sand Bed
--------------
Furuya Mud Bed
~~~~~~~~~~~~~~
[ Lower ]

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Kyomatsubara - Kasana - Mikurihara, Makinohara city, Shizuoka pref.; Nakatahara, Omaezaki city, Shizuoka pref.; Tannobara, Kikukawa city, Shizuoka pref.
Fossils: Macaronichnus isp.
Tephra: Ky

Sugiyama et al. (1988) Geology of the Omaezaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 153p. (in Japanese with English abstract 6p.)