Origin and Paleoclimatic Significance of Late Quaternary Loess in Nebraska: Evidence from Stratigraphy, Chronology, Sedimentology, and Geochemistry

Authors

Daniel R. Muhs, United States Geological SurveyFollow
E. Arthur Bettis III, University of IowaFollow
John N. Aleinikoff, United States Geological Survey
John P. McGeehin, United States Geological Survey
Jossh Beann
Gary Skipp, United States Geological SurveyFollow
Brian D. Marshall, United States Geological Survey
Helen M. Roberts, University of WalesFollow
William C. Johnson, University of Kansas
Rachel Benton, United States National Park Service

Document Type

Article

Date of this Version

2008

Citation

GSA Bulletin (November/December 2008) 120(11/12): 1,378–1,407

Comments

United States government work

Abstract

Loess is one of the most extensive surficial geologic deposits in mid-continental North America, particularly in the central Great Plains region of Nebraska. Last-glacial-age loess (Peoria Loess) reaches its greatest known thickness in the world in this area. New stratigraphic, geochronologic, mineralogic, and geochemical data yield information about the age and provenance of Peoria Loess, as well as evaluation of recent climate models.