Chemical evolution of groundwater in the Wilcox aquifer of the northern Gulf Coastal Plain, USA
Abstract The Wilcox aquifer is a major groundwater resource in the northern Gulf Coastal Plain (lower Mississippi Valley) of the USA, yet the processes controlling water chemistry in this clastic aquifer have received relatively little attention. The current study combines analyses of solutes and st...
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| Autor*in: |
Haile, Estifanos [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag Berlin Heidelberg 2017 |
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| Übergeordnetes Werk: |
Enthalten in: Hydrogeology journal - Springer Berlin Heidelberg, 1995, 25(2017), 8 vom: 03. Juli, Seite 2403-2418 |
|---|---|
| Übergeordnetes Werk: |
volume:25 ; year:2017 ; number:8 ; day:03 ; month:07 ; pages:2403-2418 |
| Links: |
|---|
| DOI / URN: |
10.1007/s10040-017-1608-y |
|---|
| Katalog-ID: |
OLC2040029346 |
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| 245 | 1 | 0 | |a Chemical evolution of groundwater in the Wilcox aquifer of the northern Gulf Coastal Plain, USA |
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| 520 | |a Abstract The Wilcox aquifer is a major groundwater resource in the northern Gulf Coastal Plain (lower Mississippi Valley) of the USA, yet the processes controlling water chemistry in this clastic aquifer have received relatively little attention. The current study combines analyses of solutes and stable isotopes in groundwater, petrography of core samples, and geochemical modeling to identify plausible reactions along a regional flow path ∼300 km long. The hydrochemical facies evolves from Ca-$ HCO_{3} $ upgradient to Na-$ HCO_{3} $ downgradient, with a sequential zonation of terminal electron-accepting processes from Fe(III) reduction through $ SO_{4} $2− reduction to methanogenesis. In particular, decreasing $ SO_{4} $2− and increasing $ δ^{34} $S of $ SO_{4} $2− along the flow path, as well as observations of authigenic pyrite in core samples, provide evidence of $ SO_{4} $2− reduction. Values of $ δ^{13} $C in groundwater suggest that dissolved inorganic carbon is contributed both by oxidation of sedimentary organic matter and calcite dissolution. Inverse modeling identified multiple plausible sets of reactions between sampled wells, which typically involved cation exchange, pyrite precipitation, $ CH_{2} $O oxidation, and dissolution of amorphous Fe(OH)3, calcite, or siderite. These reactions are consistent with processes identified in previous studies of Atlantic Coastal Plain aquifers. Contrasts in groundwater chemistry between the Wilcox and the underlying McNairy and overlying Claiborne aquifers indicate that confining units are relatively effective in limiting cross-formational flow, but localized cross-formational mixing could occur via fault zones. Consequently, increased pumping in the vicinity of fault zones could facilitate upward movement of saline water into the Wilcox. | ||
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10.1007/s10040-017-1608-y doi (DE-627)OLC2040029346 (DE-He213)s10040-017-1608-y-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 13 ssgn Haile, Estifanos verfasserin aut Chemical evolution of groundwater in the Wilcox aquifer of the northern Gulf Coastal Plain, USA 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 2017 Abstract The Wilcox aquifer is a major groundwater resource in the northern Gulf Coastal Plain (lower Mississippi Valley) of the USA, yet the processes controlling water chemistry in this clastic aquifer have received relatively little attention. The current study combines analyses of solutes and stable isotopes in groundwater, petrography of core samples, and geochemical modeling to identify plausible reactions along a regional flow path ∼300 km long. The hydrochemical facies evolves from Ca-$ HCO_{3} $ upgradient to Na-$ HCO_{3} $ downgradient, with a sequential zonation of terminal electron-accepting processes from Fe(III) reduction through $ SO_{4} $2− reduction to methanogenesis. In particular, decreasing $ SO_{4} $2− and increasing $ δ^{34} $S of $ SO_{4} $2− along the flow path, as well as observations of authigenic pyrite in core samples, provide evidence of $ SO_{4} $2− reduction. Values of $ δ^{13} $C in groundwater suggest that dissolved inorganic carbon is contributed both by oxidation of sedimentary organic matter and calcite dissolution. Inverse modeling identified multiple plausible sets of reactions between sampled wells, which typically involved cation exchange, pyrite precipitation, $ CH_{2} $O oxidation, and dissolution of amorphous Fe(OH)3, calcite, or siderite. These reactions are consistent with processes identified in previous studies of Atlantic Coastal Plain aquifers. Contrasts in groundwater chemistry between the Wilcox and the underlying McNairy and overlying Claiborne aquifers indicate that confining units are relatively effective in limiting cross-formational flow, but localized cross-formational mixing could occur via fault zones. Consequently, increased pumping in the vicinity of fault zones could facilitate upward movement of saline water into the Wilcox. USA Groundwater monitoring Hydrochemical modeling Hydrogeochemistry Fryar, Alan E. aut Enthalten in Hydrogeology journal Springer Berlin Heidelberg, 1995 25(2017), 8 vom: 03. Juli, Seite 2403-2418 (DE-627)18393735X (DE-600)1227482-3 (DE-576)045314829 1431-2174 nnns volume:25 year:2017 number:8 day:03 month:07 pages:2403-2418 https://doi.org/10.1007/s10040-017-1608-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_70 GBV_ILN_183 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4277 AR 25 2017 8 03 07 2403-2418 |
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10.1007/s10040-017-1608-y doi (DE-627)OLC2040029346 (DE-He213)s10040-017-1608-y-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 13 ssgn Haile, Estifanos verfasserin aut Chemical evolution of groundwater in the Wilcox aquifer of the northern Gulf Coastal Plain, USA 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 2017 Abstract The Wilcox aquifer is a major groundwater resource in the northern Gulf Coastal Plain (lower Mississippi Valley) of the USA, yet the processes controlling water chemistry in this clastic aquifer have received relatively little attention. The current study combines analyses of solutes and stable isotopes in groundwater, petrography of core samples, and geochemical modeling to identify plausible reactions along a regional flow path ∼300 km long. The hydrochemical facies evolves from Ca-$ HCO_{3} $ upgradient to Na-$ HCO_{3} $ downgradient, with a sequential zonation of terminal electron-accepting processes from Fe(III) reduction through $ SO_{4} $2− reduction to methanogenesis. In particular, decreasing $ SO_{4} $2− and increasing $ δ^{34} $S of $ SO_{4} $2− along the flow path, as well as observations of authigenic pyrite in core samples, provide evidence of $ SO_{4} $2− reduction. Values of $ δ^{13} $C in groundwater suggest that dissolved inorganic carbon is contributed both by oxidation of sedimentary organic matter and calcite dissolution. Inverse modeling identified multiple plausible sets of reactions between sampled wells, which typically involved cation exchange, pyrite precipitation, $ CH_{2} $O oxidation, and dissolution of amorphous Fe(OH)3, calcite, or siderite. These reactions are consistent with processes identified in previous studies of Atlantic Coastal Plain aquifers. Contrasts in groundwater chemistry between the Wilcox and the underlying McNairy and overlying Claiborne aquifers indicate that confining units are relatively effective in limiting cross-formational flow, but localized cross-formational mixing could occur via fault zones. Consequently, increased pumping in the vicinity of fault zones could facilitate upward movement of saline water into the Wilcox. USA Groundwater monitoring Hydrochemical modeling Hydrogeochemistry Fryar, Alan E. aut Enthalten in Hydrogeology journal Springer Berlin Heidelberg, 1995 25(2017), 8 vom: 03. Juli, Seite 2403-2418 (DE-627)18393735X (DE-600)1227482-3 (DE-576)045314829 1431-2174 nnns volume:25 year:2017 number:8 day:03 month:07 pages:2403-2418 https://doi.org/10.1007/s10040-017-1608-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_70 GBV_ILN_183 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4277 AR 25 2017 8 03 07 2403-2418 |
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10.1007/s10040-017-1608-y doi (DE-627)OLC2040029346 (DE-He213)s10040-017-1608-y-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 13 ssgn Haile, Estifanos verfasserin aut Chemical evolution of groundwater in the Wilcox aquifer of the northern Gulf Coastal Plain, USA 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 2017 Abstract The Wilcox aquifer is a major groundwater resource in the northern Gulf Coastal Plain (lower Mississippi Valley) of the USA, yet the processes controlling water chemistry in this clastic aquifer have received relatively little attention. The current study combines analyses of solutes and stable isotopes in groundwater, petrography of core samples, and geochemical modeling to identify plausible reactions along a regional flow path ∼300 km long. The hydrochemical facies evolves from Ca-$ HCO_{3} $ upgradient to Na-$ HCO_{3} $ downgradient, with a sequential zonation of terminal electron-accepting processes from Fe(III) reduction through $ SO_{4} $2− reduction to methanogenesis. In particular, decreasing $ SO_{4} $2− and increasing $ δ^{34} $S of $ SO_{4} $2− along the flow path, as well as observations of authigenic pyrite in core samples, provide evidence of $ SO_{4} $2− reduction. Values of $ δ^{13} $C in groundwater suggest that dissolved inorganic carbon is contributed both by oxidation of sedimentary organic matter and calcite dissolution. Inverse modeling identified multiple plausible sets of reactions between sampled wells, which typically involved cation exchange, pyrite precipitation, $ CH_{2} $O oxidation, and dissolution of amorphous Fe(OH)3, calcite, or siderite. These reactions are consistent with processes identified in previous studies of Atlantic Coastal Plain aquifers. Contrasts in groundwater chemistry between the Wilcox and the underlying McNairy and overlying Claiborne aquifers indicate that confining units are relatively effective in limiting cross-formational flow, but localized cross-formational mixing could occur via fault zones. Consequently, increased pumping in the vicinity of fault zones could facilitate upward movement of saline water into the Wilcox. USA Groundwater monitoring Hydrochemical modeling Hydrogeochemistry Fryar, Alan E. aut Enthalten in Hydrogeology journal Springer Berlin Heidelberg, 1995 25(2017), 8 vom: 03. Juli, Seite 2403-2418 (DE-627)18393735X (DE-600)1227482-3 (DE-576)045314829 1431-2174 nnns volume:25 year:2017 number:8 day:03 month:07 pages:2403-2418 https://doi.org/10.1007/s10040-017-1608-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_70 GBV_ILN_183 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4277 AR 25 2017 8 03 07 2403-2418 |
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10.1007/s10040-017-1608-y doi (DE-627)OLC2040029346 (DE-He213)s10040-017-1608-y-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 13 ssgn Haile, Estifanos verfasserin aut Chemical evolution of groundwater in the Wilcox aquifer of the northern Gulf Coastal Plain, USA 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 2017 Abstract The Wilcox aquifer is a major groundwater resource in the northern Gulf Coastal Plain (lower Mississippi Valley) of the USA, yet the processes controlling water chemistry in this clastic aquifer have received relatively little attention. The current study combines analyses of solutes and stable isotopes in groundwater, petrography of core samples, and geochemical modeling to identify plausible reactions along a regional flow path ∼300 km long. The hydrochemical facies evolves from Ca-$ HCO_{3} $ upgradient to Na-$ HCO_{3} $ downgradient, with a sequential zonation of terminal electron-accepting processes from Fe(III) reduction through $ SO_{4} $2− reduction to methanogenesis. In particular, decreasing $ SO_{4} $2− and increasing $ δ^{34} $S of $ SO_{4} $2− along the flow path, as well as observations of authigenic pyrite in core samples, provide evidence of $ SO_{4} $2− reduction. Values of $ δ^{13} $C in groundwater suggest that dissolved inorganic carbon is contributed both by oxidation of sedimentary organic matter and calcite dissolution. Inverse modeling identified multiple plausible sets of reactions between sampled wells, which typically involved cation exchange, pyrite precipitation, $ CH_{2} $O oxidation, and dissolution of amorphous Fe(OH)3, calcite, or siderite. These reactions are consistent with processes identified in previous studies of Atlantic Coastal Plain aquifers. Contrasts in groundwater chemistry between the Wilcox and the underlying McNairy and overlying Claiborne aquifers indicate that confining units are relatively effective in limiting cross-formational flow, but localized cross-formational mixing could occur via fault zones. Consequently, increased pumping in the vicinity of fault zones could facilitate upward movement of saline water into the Wilcox. USA Groundwater monitoring Hydrochemical modeling Hydrogeochemistry Fryar, Alan E. aut Enthalten in Hydrogeology journal Springer Berlin Heidelberg, 1995 25(2017), 8 vom: 03. Juli, Seite 2403-2418 (DE-627)18393735X (DE-600)1227482-3 (DE-576)045314829 1431-2174 nnns volume:25 year:2017 number:8 day:03 month:07 pages:2403-2418 https://doi.org/10.1007/s10040-017-1608-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_70 GBV_ILN_183 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4277 AR 25 2017 8 03 07 2403-2418 |
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10.1007/s10040-017-1608-y doi (DE-627)OLC2040029346 (DE-He213)s10040-017-1608-y-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 13 ssgn Haile, Estifanos verfasserin aut Chemical evolution of groundwater in the Wilcox aquifer of the northern Gulf Coastal Plain, USA 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 2017 Abstract The Wilcox aquifer is a major groundwater resource in the northern Gulf Coastal Plain (lower Mississippi Valley) of the USA, yet the processes controlling water chemistry in this clastic aquifer have received relatively little attention. The current study combines analyses of solutes and stable isotopes in groundwater, petrography of core samples, and geochemical modeling to identify plausible reactions along a regional flow path ∼300 km long. The hydrochemical facies evolves from Ca-$ HCO_{3} $ upgradient to Na-$ HCO_{3} $ downgradient, with a sequential zonation of terminal electron-accepting processes from Fe(III) reduction through $ SO_{4} $2− reduction to methanogenesis. In particular, decreasing $ SO_{4} $2− and increasing $ δ^{34} $S of $ SO_{4} $2− along the flow path, as well as observations of authigenic pyrite in core samples, provide evidence of $ SO_{4} $2− reduction. Values of $ δ^{13} $C in groundwater suggest that dissolved inorganic carbon is contributed both by oxidation of sedimentary organic matter and calcite dissolution. Inverse modeling identified multiple plausible sets of reactions between sampled wells, which typically involved cation exchange, pyrite precipitation, $ CH_{2} $O oxidation, and dissolution of amorphous Fe(OH)3, calcite, or siderite. These reactions are consistent with processes identified in previous studies of Atlantic Coastal Plain aquifers. Contrasts in groundwater chemistry between the Wilcox and the underlying McNairy and overlying Claiborne aquifers indicate that confining units are relatively effective in limiting cross-formational flow, but localized cross-formational mixing could occur via fault zones. Consequently, increased pumping in the vicinity of fault zones could facilitate upward movement of saline water into the Wilcox. USA Groundwater monitoring Hydrochemical modeling Hydrogeochemistry Fryar, Alan E. aut Enthalten in Hydrogeology journal Springer Berlin Heidelberg, 1995 25(2017), 8 vom: 03. Juli, Seite 2403-2418 (DE-627)18393735X (DE-600)1227482-3 (DE-576)045314829 1431-2174 nnns volume:25 year:2017 number:8 day:03 month:07 pages:2403-2418 https://doi.org/10.1007/s10040-017-1608-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_70 GBV_ILN_183 GBV_ILN_267 GBV_ILN_2018 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4277 AR 25 2017 8 03 07 2403-2418 |
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chemical evolution of groundwater in the wilcox aquifer of the northern gulf coastal plain, usa |
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Chemical evolution of groundwater in the Wilcox aquifer of the northern Gulf Coastal Plain, USA |
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Abstract The Wilcox aquifer is a major groundwater resource in the northern Gulf Coastal Plain (lower Mississippi Valley) of the USA, yet the processes controlling water chemistry in this clastic aquifer have received relatively little attention. The current study combines analyses of solutes and stable isotopes in groundwater, petrography of core samples, and geochemical modeling to identify plausible reactions along a regional flow path ∼300 km long. The hydrochemical facies evolves from Ca-$ HCO_{3} $ upgradient to Na-$ HCO_{3} $ downgradient, with a sequential zonation of terminal electron-accepting processes from Fe(III) reduction through $ SO_{4} $2− reduction to methanogenesis. In particular, decreasing $ SO_{4} $2− and increasing $ δ^{34} $S of $ SO_{4} $2− along the flow path, as well as observations of authigenic pyrite in core samples, provide evidence of $ SO_{4} $2− reduction. Values of $ δ^{13} $C in groundwater suggest that dissolved inorganic carbon is contributed both by oxidation of sedimentary organic matter and calcite dissolution. Inverse modeling identified multiple plausible sets of reactions between sampled wells, which typically involved cation exchange, pyrite precipitation, $ CH_{2} $O oxidation, and dissolution of amorphous Fe(OH)3, calcite, or siderite. These reactions are consistent with processes identified in previous studies of Atlantic Coastal Plain aquifers. Contrasts in groundwater chemistry between the Wilcox and the underlying McNairy and overlying Claiborne aquifers indicate that confining units are relatively effective in limiting cross-formational flow, but localized cross-formational mixing could occur via fault zones. Consequently, increased pumping in the vicinity of fault zones could facilitate upward movement of saline water into the Wilcox. © Springer-Verlag Berlin Heidelberg 2017 |
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Abstract The Wilcox aquifer is a major groundwater resource in the northern Gulf Coastal Plain (lower Mississippi Valley) of the USA, yet the processes controlling water chemistry in this clastic aquifer have received relatively little attention. The current study combines analyses of solutes and stable isotopes in groundwater, petrography of core samples, and geochemical modeling to identify plausible reactions along a regional flow path ∼300 km long. The hydrochemical facies evolves from Ca-$ HCO_{3} $ upgradient to Na-$ HCO_{3} $ downgradient, with a sequential zonation of terminal electron-accepting processes from Fe(III) reduction through $ SO_{4} $2− reduction to methanogenesis. In particular, decreasing $ SO_{4} $2− and increasing $ δ^{34} $S of $ SO_{4} $2− along the flow path, as well as observations of authigenic pyrite in core samples, provide evidence of $ SO_{4} $2− reduction. Values of $ δ^{13} $C in groundwater suggest that dissolved inorganic carbon is contributed both by oxidation of sedimentary organic matter and calcite dissolution. Inverse modeling identified multiple plausible sets of reactions between sampled wells, which typically involved cation exchange, pyrite precipitation, $ CH_{2} $O oxidation, and dissolution of amorphous Fe(OH)3, calcite, or siderite. These reactions are consistent with processes identified in previous studies of Atlantic Coastal Plain aquifers. Contrasts in groundwater chemistry between the Wilcox and the underlying McNairy and overlying Claiborne aquifers indicate that confining units are relatively effective in limiting cross-formational flow, but localized cross-formational mixing could occur via fault zones. Consequently, increased pumping in the vicinity of fault zones could facilitate upward movement of saline water into the Wilcox. © Springer-Verlag Berlin Heidelberg 2017 |
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Abstract The Wilcox aquifer is a major groundwater resource in the northern Gulf Coastal Plain (lower Mississippi Valley) of the USA, yet the processes controlling water chemistry in this clastic aquifer have received relatively little attention. The current study combines analyses of solutes and stable isotopes in groundwater, petrography of core samples, and geochemical modeling to identify plausible reactions along a regional flow path ∼300 km long. The hydrochemical facies evolves from Ca-$ HCO_{3} $ upgradient to Na-$ HCO_{3} $ downgradient, with a sequential zonation of terminal electron-accepting processes from Fe(III) reduction through $ SO_{4} $2− reduction to methanogenesis. In particular, decreasing $ SO_{4} $2− and increasing $ δ^{34} $S of $ SO_{4} $2− along the flow path, as well as observations of authigenic pyrite in core samples, provide evidence of $ SO_{4} $2− reduction. Values of $ δ^{13} $C in groundwater suggest that dissolved inorganic carbon is contributed both by oxidation of sedimentary organic matter and calcite dissolution. Inverse modeling identified multiple plausible sets of reactions between sampled wells, which typically involved cation exchange, pyrite precipitation, $ CH_{2} $O oxidation, and dissolution of amorphous Fe(OH)3, calcite, or siderite. These reactions are consistent with processes identified in previous studies of Atlantic Coastal Plain aquifers. Contrasts in groundwater chemistry between the Wilcox and the underlying McNairy and overlying Claiborne aquifers indicate that confining units are relatively effective in limiting cross-formational flow, but localized cross-formational mixing could occur via fault zones. Consequently, increased pumping in the vicinity of fault zones could facilitate upward movement of saline water into the Wilcox. © Springer-Verlag Berlin Heidelberg 2017 |
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