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Br-Cl-Na systematics in Illinois basin fluids: Constraints on fluid origin and evolution

1990; Geological Society of America; Volume: 18; Issue: 4 Linguagem: Inglês

10.1130/0091-7613(1990)018 2.3.co;2

1943-2682

Lynn M. Walter, Alan M. Stueber, Ted J. Huston,

Groundwater flow and contamination studies

Research Article| April 01, 1990 Br-Cl-Na systematics in Illinois basin fluids: Constraints on fluid origin and evolution Lynn M. Walter; Lynn M. Walter 1Department of Earth and Planetary Sciences, Washington University, St. Louis, Missouri 63130 Search for other works by this author on: GSW Google Scholar Alan M. Stueber; Alan M. Stueber 2Department of Geography and Earth Science, Southern Illinois University, Edwardsville, Illinois 62026 Search for other works by this author on: GSW Google Scholar Ted J. Huston Ted J. Huston 1Department of Earth and Planetary Sciences, Washington University, St. Louis, Missouri 63130 Search for other works by this author on: GSW Google Scholar Author and Article Information Lynn M. Walter 1Department of Earth and Planetary Sciences, Washington University, St. Louis, Missouri 63130 Alan M. Stueber 2Department of Geography and Earth Science, Southern Illinois University, Edwardsville, Illinois 62026 Ted J. Huston 1Department of Earth and Planetary Sciences, Washington University, St. Louis, Missouri 63130 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1990) 18 (4): 315–318. https://doi.org/10.1130/0091-7613(1990)018 2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Lynn M. Walter, Alan M. Stueber, Ted J. Huston; Br-Cl-Na systematics in Illinois basin fluids: Constraints on fluid origin and evolution. Geology 1990;; 18 (4): 315–318. doi: https://doi.org/10.1130/0091-7613(1990)018 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 We present here bromide, chloride, and sodium data for fluids from reservoirs of Ordovician through Pennsylvanian age in the Illinois basin which suggest that remnant marine fluids contribute significantly to fluid Cl budgets. Cl/Br and Na/Br ratios for Ordovician through Devonian formation fluids are relatively uniform and near those for seawater, despite greater than a factor of ten range in Cl concentration. In contrast, fluids from Mississippian and Pennsylvanian reservoirs, separated from older reservoirs by the New Albany Shale Group, have more variable fluid Cl/Br and Na/Br ratios, most of which are significantly greater than those of seawater. The 1:1 stoichiometry of Cl and Na increases for Mississippian and Pennsylvanian formation fluids is consistent with halite dissolution. Nevertheless, Br systematics and mass-balance considerations indicate that the overall Cl budget of Illinois basin formation fluids appears to be more significantly influenced by the contribution from subaerially evaporated seawater than by halite dissolution. 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.