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Altitude of the top of the Sparta Sand and Memphis Sand in three areas of Arkansas

Water-Resources Investigations Report 98-4002

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Abstract

The Sparta Sand and Memphis Sand form the second most productive aquifer in Arkansas. The Sparta Sand and Memphis Sand range in thick- ness from 0 to 900 feet, consisting of fine- to medium-grained sands interbedded with layers of silt, clay, shale, and minor amounts of lignite. Within the three areas of interest, the top surface of the Sparta Sand and Memphis Sand dips regionally east and southeast towards the axis of the Mississippi Embayment syncline and Desha Basin. Local variations in the top surface may be attributed to a combination of continued development of structural features, differential compaction, localized faulting, and erosion of the surface prior to subsequent inundation and deposition of younger sediments.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Altitude of the top of the Sparta Sand and Memphis Sand in three areas of Arkansas
Series title:
Water-Resources Investigations Report
Series number:
98-4002
Edition:
-
Year Published:
1998
Language:
ENGLISH
Publisher:
U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor],
Description:
iii, 5 p. :maps ;28 cm.; 3 plates; 2 figs.