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Alluvium and Colluvium

ALLUVIUM AND COLLUVIUM--Clay, silt, sand, and gravel in flood plains, fans, terraces, and slopes.
StateWyoming
NameAlluvium and Colluvium
Geologic agePhanerozoic | Cenozoic | Quaternary | Pleistocene Holocene
Original map labelQa
Primary rock typealluvium
Secondary rock typecolluvium
Other rock types
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > Gravel (Alluvial)
Unconsolidated > Coarse-detrital > Sand (Alluvial)
Unconsolidated > Fine-detrital > Clay (Alluvial)
Unconsolidated > Fine-detrital > Silt (Alluvial)
Map references
Green, Gregory N. , and Drouillard, Patricia H. , 1994, The Digital Geologic Map of Wyoming in ARC/INFO Format: U.S. Geological Survey Open-File Report 94-0425.
Unit references
Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey.
Geographic coverageAlbany - Big Horn - Campbell - Carbon - Converse - Crook - Fremont - Goshen - Hot Springs - Johnson - Laramie - Lincoln - Natrona - Niobrara - Park - Platte - Sheridan - Sublette - Sweetwater - Teton - Uinta - Washakie - Weston

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