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Java Formation

Sand to gravel of fluvial orgin. Upper portion is tan to reddish-brown eolian silt with minor clay and fine-grained sand. Thickness up to 180 ft (55 m).
StateSouth Dakota
NameJava Formation
Geologic agePhanerozoic | Cenozoic | Quaternary | Pleistocene-Early
Original map labelQj
Primary rock typesand
Secondary rock typegravel
Other rock typessilt; clay or mud
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > Gravel (Fluvial)
Unconsolidated > Coarse-detrital > Sand (Fluvial)
Minor
Unconsolidated > Fine-detrital > Clay (Eolian)
Unconsolidated > Fine-detrital > Silt (Eolian)
Map references
Martin, J. E., Sawyer, J. F., Fahrenbach, M. D., Tomhave, D. W., and Schulz, L. D., 2004, Geologic Map of South Dakota: South Dakota Geological Survey
Unit references
Martin, J. E., Sawyer, J. F., Fahrenbach, M. D., Tomhave, D. W., and Schulz, L. D., 2004, Geologic Map of South Dakota: South Dakota Geological Survey
Geographic coverageWalworth

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