Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Pleistocene convolutions near city springs of Laramie, Wyoming

Michael D. Fenton and M. R. Voorhies
Pleistocene convolutions near city springs of Laramie, Wyoming
Contributions to Geology (1965) 4 (2): 81-84

Abstract

Highly contorted siltstone strata of the Satanka Formation (Permian) are exposed in a stream bank northeast of Laramie, Wyo. Overlying the Satanka at this locality are Pleistocene fluviatile sediments (several lenses of sand and a bed of cobbles) which are also involved in the convolutions. In contrast with most previously described Pleistocene convolutions, those discussed herein show a pronounced directionality. The folds are asymmetrical with their steep limbs dipping southwest and many are overturned in the same direction. Although these features may have formed under periglacial conditions, a simple freeze-thaw mechanism is insufficient to account for their configuration. Deposition of the overlying load of cobbles on an unstable slope may well have induced the deformation.


ISSN: 0010-7980
Coden: WUGGAO
Serial Title: Contributions to Geology
Serial Volume: 4
Serial Issue: 2
Title: Pleistocene convolutions near city springs of Laramie, Wyoming
Pages: 81-84
Published: 1965
Text Language: English
Publisher: University of Wyoming, Laramie, WY, United States
Accession Number: 1965-016365
Categories: Structural geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N41°00'00" - N45°00'00", W111°04'60" - W104°04'60"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1965
Close Modal

or Create an Account

Close Modal
Close Modal