Geologic units containing colluvium

Mineral Resources On-Line Spatial Data

Colluvium

A general term applied to any loose, heterogeneous, and incoherent mass of soil material and/or rock fragments deposited by rainwash, sheetwash, or slow, continuous downslope creep, usually collecting at the base of gentle slopes or hillsides.

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Colorado

Landslide deposits (Phanerozoic | Cenozoic | Quaternary): Locally includes talus, rock-glacier, and thick colluvial deposits

Idaho

Basalt flows, basaltic pyroclastic and clastic debris; Middle Pleistocene canyon-filling and plateau lava flows, pyroclastic debris, alluvium, and colluvium; Snake River Plain (Middle Pleistocene): Middle Pleistocene plateau and canyon-filling basalt in and near Snake Plain.
Clastic debris; Quaternary colluvium, fanglomerate, talus, and glacial deposits; upland-valley margins (Quaternary): Quaternary colluvium, fanglomerate, and talus plus some glacial debris in upland valleys.
Gravel, sand, and clay; Quaternary-Tertiary colluvium and fanglomerate; western Idaho (Pleistocene and Pliocene): Pleistocene and Pliocene fanglomerate, colluvium, and poorly sorted gravel deposits.
Gravel, sand, and silt; Quaternary; alluvium (Quaternary): Quaternary alluvium; may contain some glacial deposits and colluvium in uplands
Surficial sediments; Quaternary alluvial, lacustrine, eolian, and glacial-outwash deposits, undivided; Snake River Plain, and Basin-and-Range provinces (Quaternary): Quaternary surficial cover; Snake Plain stream, lake, wind and glacial-flood mantle.

New Mexico

landslide deposits and colluvium (Phanerozoic | Cenozoic | Quaternary): Landslide deposits and colluvium

Nevada

Landslide deposits (Quaternary): LANDSLIDE DEPOSITS

Oregon

Fanglomerate (Holocene? and Pleistocene) (Pleistocene to Holocene): Poorly sorted and poorly stratified alluvial fan debris, slope wash, colluvium, and talus; composed mostly of silt and fragments of basalt, basaltic andesite, and andesite. In places includes small areas of pediment gravels and colluvium

Utah

Quaternary alluvium and colluvium (Quaternary)

Wyoming

Alluvium and Colluvium (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene): ALLUVIUM AND COLLUVIUM--Clay, silt, sand, and gravel in flood plains, fans, terraces, and slopes.
Undivided surficial deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene): UNDIVIDED SURFICIAL DEPOSITS--Mostly alluvium, colluvium, and glacial and landslide deposits. Primarily in Yellowstone area and Bighorn Mountains.