| State | Colorado |
|---|---|
| Name | Older gravels and alluviums |
| Geologic age | Quaternary |
| Lithologic constituents | Major
Unconsolidated > Coarse-detrital > Gravel (Alluvial)
Unconsolidated (Alluvial)
|
| References | Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000. |
| NGMDB product | |
| Counties | Adams - Arapahoe - Archuleta - Bent - Boulder - Broomfield - Chaffee - Cheyenne - Conejos - Crowley - Custer - Delta - Denver - Douglas - Eagle - Elbert - El Paso - Fremont - Garfield - Grand - Jackson - Jefferson - Kiowa - Lake - La Plata - Larimer - Las Animas - Lincoln - Logan - Mesa - Moffat - Montezuma - Montrose - Morgan - Otero - Ouray - Park - Pitkin - Prowers - Pueblo - Rio Grande - Routt - Saguache - Teller - Weld |