USGS - science for a changing world

Mineral Resources On-Line Spatial Data

Arikaree Group

Consists mainly of gray, fine, loose to compact sand that has layers of hard, fine-grained dark-gray concretions which vary from few in to 15 in and often have tabular form. Includes a large amount of volcanic ash mixed in with the sand. Contains a number of channels filled with coarse conglomerate along ridge south of North Platte River. About 500 ft thick.
StateNebraska
NameArikaree Group
Geologic agePhanerozoic | Cenozoic | Tertiary | Oligocene Miocene
Original map labelTa
CommentsIncludes in decending order: Monroe Creek and Sharps FMs.
Primary rock typesand
Secondary rock typevolcanic ash
Other rock typesconglomerate
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > Sand (Bed)
Minor
Sedimentary > Clastic > Conglomerate (Bed)
Map references
Burchett, R. R., 1986, Geologic Bedrock Map of Nebraska: Nebraska Geological Survey. Scale 1:1 Million.
Unit references
Burchett, R. R., 1986, Geologic Bedrock Map of Nebraska: Nebraska Geological Survey. Scale 1:1 Million.
Darton, N. H., 1899, Preliminary report on the geology and water resources of Nebraska west of the one hundred and third meridian: U.S Geological Survey, 19th Annual Report, p. 721-785.
Geographic coverageBanner - Box Butte - Cherry - Dawes - Morrill - Scotts Bluff - Sheridan - Sioux

Show this information as [XML] - [JSON]

AccessibilityFOIAPrivacyPolicies and Notices

Take Pride in America logoUSA.gov logoU.S. Department of the Interior | U.S. Geological Survey
URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=NETa;0
Page Contact Information: Peter Schweitzer