Three-dimensional geologic model of the Arbuckle-Simpson aquifer, south-central Oklahoma

Open-File Report 2010-1123
Prepared in cooperation with Oklahoma State University and the Oklahoma Water Resources Board
By: , and 

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Abstract

The Arbuckle-Simpson aquifer of south-central Oklahoma encompasses more than 850 square kilometers and is the principal water resource for south-central Oklahoma. Rock units comprising the aquifer are characterized by limestone, dolomite, and sandstones assigned to two lower Paleozoic units: the Arbuckle and Simpson Groups. Also considered to be part of the aquifer is the underlying Cambrian-age Timbered Hills Group that contains limestone and sandstone. The highly faulted and fractured nature of the Arbuckle-Simpson units and the variable thickness (600 to 2,750 meters) increases the complexity in determining the subsurface geologic framework of this aquifer. A three-dimensional EarthVision (Trademark) geologic framework model was constructed to quantify the geometric relationships of the rock units of the Arbuckle-Simpson aquifer in the Hunton anticline area. This 3-D EarthVision (Trademark) geologic framework model incorporates 54 faults and four modeled units: basement, Arbuckle-Timbered Hills Group, Simpson Group, and post-Simpson. Primary data used to define the model's 54 faults and four modeled surfaces were obtained from geophysical logs, cores, and cuttings from 126 water and petroleum wells. The 3-D framework model both depicts the volumetric extent of the aquifer and provides the stratigraphic layer thickness and elevation data used to construct a MODFLOW version 2000 regional groundwater-flow model.

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Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Three-dimensional geologic model of the Arbuckle-Simpson aquifer, south-central Oklahoma
Series title Open-File Report
Series number 2010-1123
DOI 10.3133/ofr20101123
Edition -
Year Published 2010
Language ENGLISH
Publisher U.S. Geological Survey
Contributing office(s) Environmental Change Science Center
Description Report: iii, 26 p.; CD-ROM; Downloads Directory
Online Only (Y/N) Y
Additional Online Files (Y/N) Y
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