Control of naturally occurring brine springs and seeps in an evaporite karst setting

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Authors:Memon, Bashir A.; Patton, Abner F.; Pitts, Mary Wallace
Author Affiliations:Primary:
P. E. LaMoreaux and Associates, Tuscaloosa, AL, United States
Volume Title:Sinkholes and the engineering and environmental impacts of karst
Volume Authors:Beck, Barry F., editor
Source:Engineering Geology, 52(1-2), p.83-91; Sixth multidisciplinary conference on Sinkholes and the engineering and environmental impacts of karst, Springfield, MO, 1997, edited by Barry F. Beck. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0013-7952
Publication Date:1999
Note:In English. 4 refs.; illus., incl. sect., 1 table, sketch maps
Summary:Naturally occurring brine springs and seeps contribute a daily average of 3300 metric tons of chloride to the Red River through its tributaries. A study to control brine discharges, thereby improving the water quality of the Red River, has been performed. The study area is located just east of the high plains in the Rolling Plains subdivision of the central lowlands physiographic province of Texas. Dolomite units throughout the area are fractured along bedding planes, vuggy in places and weathered. Gypsum units are massively bedded to interbedded with thin layers of dolomite. Cavities occur in either dolomite and/or gypsum. Dissolution of these units has formed sinkholes and depressions. The major source of brine discharge in the study area is through springs and seeps. Springs and seeps occur because the potentiometric head of the brine is higher than the creek bed elevation, and permeability of materials in the discharge area is low compared to the surrounding area. A drilling program and pumping test was performed to determine the number and location of wells, and pumping rates to control the brine discharge from the area. Transmissivity of the bedrock aquifer system ranges from 149 m2day-1 (12000 gpdft-1), with an average of 2108 m-2d-1 (170000 gpdft-1). The high value of transmissivity is indicative of the karst nature of the bedrock aquifer system. During the study, the chloride load in the creek was controlled as a result of elimination of brine spring discharge. Naturally occurring brine springs and seeps in the study area, an evaporite karst setting, can be controlled by installation and operation of four shallow collection wells at a combined pumping rate of 5.68 m3m (1500 gpm). Abstract Copyright (1999) Elsevier, B.V.
Subjects:Aquifers; Brines; Carbonate rocks; Case studies; Chemically precipitated rocks; Chloride ion; Chlorine; Collapse structures; Controls; Discharge; Dolostone; Drilling; Evaporites; Field studies; Fractured materials; Geochemistry; Ground water; Gypsum; Halogens; Hydrochemistry; Hydrographs; Hydrology; Karst; Levels; Potentiometric surface; Pump tests; Pumping; Rivers and streams; Sedimentary rocks; Seepage; Solution features; Springs; Sulfates; Surface water; Transmissivity; Water quality; Water wells; Weathering; Childress County Texas; Great Plains; North America; Red River; Southern Great Plains; Texas; United States
Coordinates:N341500 N344000 W1000000 W1002500
Record ID:1999029542
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands
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