Skip to Main Content
GEOREF RECORD

Geology and geomorphology of the Carolina Sandhills, Chesterfield County, South Carolina

Christopher S. Swezey, Bradley A. Fitzwater and G. Richard Whittecar
Geology and geomorphology of the Carolina Sandhills, Chesterfield County, South Carolina (in Gold, structures, and landforms in central South Carolina; field guides for the 2016 GSA Southeastern Section meeting, Columbia, South Carolina, William R. Doar (editor))
Field Guide (Geological Society of America) (2016) 42: 9-36

Abstract

This two-day field trip focuses on the geology and geomorphology of the Carolina Sandhills in Chesterfield County, South Carolina. This area is located in the updip portion of the U.S. Atlantic Coastal Plain province, supports an ecosystem of longleaf pine (Pinus palustris) and wiregrass (Aristida stricta), and contains three major geologic map units: (1) An approximately 60-120-m-thick unit of weakly consolidated sand, sandstone, mud, and gravel is mapped as the Upper Cretaceous Middendorf Formation and is interpreted as a fluvial deposit. This unit is capped by an unconformity, and displays reticulate mottling, plinthite, and other paleosol features at the unconformity. The Middendorf Formation is the largest aquifer in South Carolina. (2) A 0.3-10-m-thick unit of unconsolidated sand is mapped as the Quaternary Pinehurst Formation and is interpreted as deposits of eolian sand sheets and dunes derived via remobilization of sand from the underlying Cretaceous strata. This unit displays argillic horizons and abundant evidence of bioturbation by vegetation. (3) A <3-m-thick unit of sand, pebbly sand, sandy mud, and mud is mapped as Quaternary terrace deposits adjacent to modern drainages. In addition to the geologic units listed above, a prominent geomorphologic feature in the study area is a north-trending escarpment (incised by headwater streams) that forms a markedly asymmetric drainage divide. This drainage divide, as well as the Quaternary terraces deposits, are interpreted as evidence of landscape disequilibrium (possibly geomorphic responses to Quaternary climate changes).


ISSN: 2333-0937
EISSN: 2333-0945
Serial Title: Field Guide (Geological Society of America)
Serial Volume: 42
Title: Geology and geomorphology of the Carolina Sandhills, Chesterfield County, South Carolina
Title: Gold, structures, and landforms in central South Carolina; field guides for the 2016 GSA Southeastern Section meeting, Columbia, South Carolina
Author(s): Swezey, Christopher S.Fitzwater, Bradley A.Whittecar, G. Richard
Author(s): Doar, William R., IIIeditor
Affiliation: U. S. Geological Survey, Reston, VA, United States
Affiliation: South Carolina Department of Natural Resources, Geological Survey, Columbia, SC, United States
Pages: 9-36
Published: 2016
Text Language: English
Publisher: Geological Society of America, Boulder, CO, United States
References: 86
Accession Number: 2017-006209
Categories: StratigraphyGeomorphology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., strat. cols., 1 table, geol. sketch maps
N34°22'60" - N34°49'00", W80°34'00" - W79°47'60"
Secondary Affiliation: Old Dominion University, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201705
Program Name: USGSOPNon-USGS publications with USGS authors
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal