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Na-Cl-Br systematics of mineralizing brines in Mississippi Valley–type deposits

1995; Geological Society of America; Volume: 23; Issue: 7 Linguagem: Inglês

10.1130/0091-7613(1995)023 2.3.co;2

1943-2682

Stephen E. Kesler, Martin S. Appold, Anna M. Martini, Lynn M. Walter, Ted J. Huston, J. Richard Kyle,

Groundwater and Isotope Geochemistry

Research Article| July 01, 1995 Na-Cl-Br systematics of mineralizing brines in Mississippi Valley–type deposits Stephen E. Kesler; Stephen E. Kesler 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109 Search for other works by this author on: GSW Google Scholar Martin S. Appold; Martin S. Appold 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109 Search for other works by this author on: GSW Google Scholar Anna M. Martini; Anna M. Martini 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109 Search for other works by this author on: GSW Google Scholar Lynn M. Walter; Lynn M. Walter 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109 Search for other works by this author on: GSW Google Scholar Ted J. Huston; Ted J. Huston 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109 Search for other works by this author on: GSW Google Scholar J. Richard Kyle J. Richard Kyle 2Department of Geological Sciences, University of Texas, Austin, Texas 78712 Search for other works by this author on: GSW Google Scholar Geology (1995) 23 (7): 641–644. https://doi.org/10.1130/0091-7613(1995)023 2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Stephen E. Kesler, Martin S. Appold, Anna M. Martini, Lynn M. Walter, Ted J. Huston, J. Richard Kyle; Na-Cl-Br systematics of mineralizing brines in Mississippi Valley–type deposits. Geology 1995;; 23 (7): 641–644. doi: https://doi.org/10.1130/0091-7613(1995)023 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract New and published analyses of fluid-inclusion leachates from Mississippi Valley–type (MVT) deposits can be divided into two groups on the basis of Na/Br and Cl/Br ratios. MVT leachates from the Illinois-Kentucky and Cincinnati arch districts and from cubic galena in the Viburnum Trend have Na/Br and Cl/Br ratios that extend to values significantly above that of seawater, which are characteristic of evaporite-dissolution brines. MVT leachates from Polaris and octahedral galena in the Viburnum Trend have Na/Br and Cl/Br ratios that plot below seawater and along the compositional trend formed by evaporation. Solubility-volume constraints require that brines formed by seawater evaporation had high dissolved metal contents. Preliminary correlation of leachate compositions allows delineation of two brine provinces in the midcontinent United States: (1) an early, high-Br province found only in southeastern Missouri, and (2) a later, low-Br province of probable Permian age that extended from the Cincinnati arch to the Tri-State district. These observations, along with Na-Cl-Br data for modern brines from the Illinois basin, argue against models for single-stage midcontinent MVT brine flow based on recharge from late Paleozoic (Arkoma) foreland basins to the south. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.