Geologic map of the Low Wassie Quadrangle, Oregon and Shannon counties, Missouri

IMAP 2719



The bedrock exposed in the Low Wassie Quadrangle, Missouri, comprises Late Cambrian and Early Ordovician aged dolomite, sandstone, and chert. The sedimentary rocks are nearly flat-lying except where they are adjacent to faults. The carbonates are karstified and the area contains numerous sinkholes, springs, caves, and losing-streams. This map is one of several being produced under the U.S. Geological Survey National Cooperative Geologic Mapping Program to provide geologic data applicable to land-use problems in the Ozarks of south-central Missouri. Ongoing and potential industrial and agricultural development in the Ozarks region has presented issues of ground-water quality in karst areas. A National Park in this region (Ozark National Scenic Riverways, Missouri ) is concerned about the effects of activities in areas outside of their stewardship on the water resources that define the heart of this Park. This task applies geologic mapping and karst investigations to address issues surrounding competing land use in south-central Missouri. This task keeps geologists from the USGS associated with the park and allows the Parks to utilize USGS expertise and aid the NPS on how to effectively use geologic maps for Park management. For more information see:

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Geologic map of the Low Wassie Quadrangle, Oregon and Shannon counties, Missouri
Series title IMAP
Series number 2719
Subseries GIS
DOI 10.3133/i2719
Edition Online Version 1.0
Year Published 2002
Language ENGLISH
Description Sheet 54 by 40 inches (in color)
Scale 24000
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Additional publication details