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Geomorphic and sedimentary responses of the Bull Creek Valley (Southern High Plains, USA) to Pleistocene and Holocene environmental change

Published online by Cambridge University Press:  20 January 2017

Hanna M. Arauza
Affiliation:
Department of Earth Science, University of California, Santa Barbara, 1006 Webb Hall, Santa Barbara, CA 93106, USA
Alexander R. Simms*
Affiliation:
Department of Earth Science, University of California, Santa Barbara, 1006 Webb Hall, Santa Barbara, CA 93106, USA
Leland C. Bement
Affiliation:
Oklahoma Archeological Survey, Norman, OK, USA
Brian J. Carter
Affiliation:
Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK, USA
Travis Conley
Affiliation:
Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK, USA
Ammanuel Woldergauy
Affiliation:
Boone Pickens School of Geology, Oklahoma State University, Stillwater, OK, USA
William C. Johnson
Affiliation:
William C. Johnson Department of Geography, University of Kansas, Lawrence, KS 66045, USA
Priyank Jaiswal
Affiliation:
Boone Pickens School of Geology, Oklahoma State University, Stillwater, OK, USA
*
Corresponding author. E-mail address:asimms@geol.ucsb.edu (A.R. Simms).

Abstract

Fluvial geomorphology and stratigraphy often reflect past environmental and climate conditions. This study examines the response of Bull Creek, a small ephemeral creek in the Oklahoma panhandle, to environmental conditions through the late Pleistocene and Holocene. Fluvial terraces were mapped and their stratigraphy and sedimentology documented throughout the course of the main valley. Based on their elevations, terraces were broadly grouped into a late-Pleistocene fill terrace (T3) and two Holocene fill-cut terrace sets (T2 and T1). Terrace systems are marked by similar stratigraphies recording the general environmental conditions of the time. Sedimentary sequences preserved in terrace fills record the transition from a perennial fluvial system during the late glacial period and the Younger Dryas to a semiarid environment dominated by loess accumulation and punctuated by flood events during the middle to late Holocene. The highest rates of aeolian accumulation within the valley occurred during the early to middle Holocene. Our data provide significant new information regarding the late-Pleistocene and Holocene environmental history for this region, located between the well-studied Southern and Central High Plains of North America.

Type
Original Articles
Copyright
University of Washington

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