Updating the Hydrogeologic Framework for the Northern Portion of the Gulf Coast Aquifer Page: IV
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Final Report- Updating the Hydrogeologic Framework for the Northern Portion of the Gulf Coast Aquifer
7.0 Approach for Lithologic Interpretation ............................................................................. 7-1
7.1 Lithology Classification........................................................................................... 7-1
7.2 Depositional Facies Classification........................................................................... 7-2
8.0 Gulf Coast Aquifer Lithology ........................................................................................... 8-1
8.1 Sand Thickness and Percent .................................................................................... 8-1
8.1.1 Chicot Aquifer ............................................................................................. 8-3
8.1.2 Evangeline Aquifer...................................................................................... 8-3
8.1.3 M iddle Lagarto (Burkeville confining unit) ................................................ 8-3
8.1.4 Jasper Aquifer.............................................................................................. 8-4
8.2 Depositional Facies .................................................................................................. 8-4
8.2.1 Chicot Aquifer............................................................................................. 8-5
8.2.2 Evangeline Aquifer...................................................................................... 8-5
8.2.3 Middle Lagarto Unit (Burkeville confining unit)........................................ 8-6
8.2.4 Jasper Aquifer.............................................................................................. 8-6
9.0 Gulf Coast W ater Quality.................................................................................................. 9-1
9.1 Term inology ............................................................................................................ 9-1
9.1.1 Fresh and Brackish Groundwater ................................................................ 9-1
9.1.2 Total Dissolved Solids and Specific Conductivity....................................... 9-1
9.2 Analysis of Geophysical Logs ................................................................................. 9-3
9.2.1 Approach .................................................................................................... 9-3
9.2.2 Results ......................................................................................................... 9-4
9.3 Analysis of W ater W ell M easurem ents ................................................................... 9-7
9.3.1 Approach ..................................................................................................... 9-7
9.3.2 Results ......................................................................................................... 9-7
10.0 References ........................................................................................................................ 10-1
Appendix A Geophysical Logs Listing, including Location and Use
Appendix B Listing of Geophysical Logs Stratigraphic Contacts
Appendix C Estimated Total Sand Thickness at Each Geophysical Log Location
Appendix D Response TWDB Comments on Draft Report and Responses to Commentsiv
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Young, Steven C.; Ewing, Tom; Hamlin, Scott; Baker, Ernie & Lupton, Daniel. Updating the Hydrogeologic Framework for the Northern Portion of the Gulf Coast Aquifer, report, June 2012; Austin, Texas. (https://texashistory.unt.edu/ark:/67531/metapth542209/m1/6/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.