Using 81Kr and Noble Gases to Characterize and Date Groundwater and Brines in the Baltic Artesian Basin on the One-Million-Year Timescale
Analyses for ^{81}Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover the flow dynamics of the system on a timescale of several hundred thousand years. We find that the system is controlled by m...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Gerber, Christoph [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017 |
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| Schlagwörter: |
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| Systematik: |
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| Übergeordnetes Werk: |
Enthalten in: Geochimica et cosmochimica acta - New York, NY : Elsevier Science, 1951, (2017) |
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| Übergeordnetes Werk: |
year:2017 |
| Links: |
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| DOI / URN: |
10.1016/j.gca.2017.01.033 |
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| 520 | |a Analyses for ^{81}Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover the flow dynamics of the system on a timescale of several hundred thousand years. We find that the system is controlled by mixing of three distinct water masses: Interglacial or recent meteoric water (\delta^{18}\text{O} \approx -10.4\unicode{x2030}) with a poorly evolved chemical and noble gas signature, glacial meltwater (\delta^{18}\text{O} \leq -18\unicode{x2030}) with elevated noble gas concentrations, and an old, high-salinity brine component (\delta^{18}\text{O} \geq -4.5\unicode{x2030}, \geq 90 \text{g Cl}^{-}/\text{L}) with strongly depleted atmospheric noble gas concentrations. The ^{81}Kr measurements are interpreted within this mixing framework to estimate the age of the end-members. Deconvoluted ^{81}Kr ages range from 300 ka to 1.3 Ma for interglacial or recent meteoric water and glacial meltwater. For the brine component, ages exceed the dating range of the ATTA 3 instrument of 1.3 Ma. The radiogenic noble gas components ^{4}He* and ^{40}Ar* are less conclusive but also support an age of > 1 Ma for the brine. Based on the chemical and noble gas concentrations and the dating results, we conclude that the brine originates from evaporated seawater that has been modified by later water-rock interaction. As the obtained tracer ages cover several glacial cycles, we discuss the impact of the glacial cycles on flow patterns in the studied aquifer system. | ||
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| 700 | 1 | |a Aeschbach, Werner |4 oth | |
| 700 | 1 | |a Babre, Alise |4 oth | |
| 700 | 1 | |a Jiang, Wei |4 oth | |
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| 700 | 1 | |a Saks, Tomas |4 oth | |
| 700 | 1 | |a Niklaus Waber, H |4 oth | |
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10.1016/j.gca.2017.01.033 doi PQ20170501 (DE-627)OLC1990519490 (DE-599)GBVOLC1990519490 (PRQ)a803-704a9c0966f3ca3dcb795c864180bb7b17fbd9a574fda6c3eb2127233a43d0be0 (KEY)0047876820170000000000000000using81krandnoblegasestocharacterizeanddategroundw DE-627 ger DE-627 rakwb eng 550 DNB TE 1000 AVZ rvk Gerber, Christoph verfasserin aut Using 81Kr and Noble Gases to Characterize and Date Groundwater and Brines in the Baltic Artesian Basin on the One-Million-Year Timescale 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Analyses for ^{81}Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover the flow dynamics of the system on a timescale of several hundred thousand years. We find that the system is controlled by mixing of three distinct water masses: Interglacial or recent meteoric water (\delta^{18}\text{O} \approx -10.4\unicode{x2030}) with a poorly evolved chemical and noble gas signature, glacial meltwater (\delta^{18}\text{O} \leq -18\unicode{x2030}) with elevated noble gas concentrations, and an old, high-salinity brine component (\delta^{18}\text{O} \geq -4.5\unicode{x2030}, \geq 90 \text{g Cl}^{-}/\text{L}) with strongly depleted atmospheric noble gas concentrations. The ^{81}Kr measurements are interpreted within this mixing framework to estimate the age of the end-members. Deconvoluted ^{81}Kr ages range from 300 ka to 1.3 Ma for interglacial or recent meteoric water and glacial meltwater. For the brine component, ages exceed the dating range of the ATTA 3 instrument of 1.3 Ma. The radiogenic noble gas components ^{4}He* and ^{40}Ar* are less conclusive but also support an age of > 1 Ma for the brine. Based on the chemical and noble gas concentrations and the dating results, we conclude that the brine originates from evaporated seawater that has been modified by later water-rock interaction. As the obtained tracer ages cover several glacial cycles, we discuss the impact of the glacial cycles on flow patterns in the studied aquifer system. Physics Geophysics Vaikmäe, Rein oth Aeschbach, Werner oth Babre, Alise oth Jiang, Wei oth Leuenberger, Markus oth Lu, Zheng-Tian oth Mokrik, Robert oth Müller, Peter oth Raidla, Valle oth Saks, Tomas oth Niklaus Waber, H oth Weissbach, Therese oth Zappala, Jake C oth Purtschert, Roland oth Enthalten in Geochimica et cosmochimica acta New York, NY : Elsevier Science, 1951 (2017) (DE-627)129882968 (DE-600)300305-X (DE-576)015179354 0016-7037 nnns year:2017 http://dx.doi.org/10.1016/j.gca.2017.01.033 Volltext http://arxiv.org/abs/1701.06013 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_21 GBV_ILN_70 GBV_ILN_154 GBV_ILN_188 GBV_ILN_600 GBV_ILN_2279 GBV_ILN_4323 TE 1000 AR 2017 |
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10.1016/j.gca.2017.01.033 doi PQ20170501 (DE-627)OLC1990519490 (DE-599)GBVOLC1990519490 (PRQ)a803-704a9c0966f3ca3dcb795c864180bb7b17fbd9a574fda6c3eb2127233a43d0be0 (KEY)0047876820170000000000000000using81krandnoblegasestocharacterizeanddategroundw DE-627 ger DE-627 rakwb eng 550 DNB TE 1000 AVZ rvk Gerber, Christoph verfasserin aut Using 81Kr and Noble Gases to Characterize and Date Groundwater and Brines in the Baltic Artesian Basin on the One-Million-Year Timescale 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Analyses for ^{81}Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover the flow dynamics of the system on a timescale of several hundred thousand years. We find that the system is controlled by mixing of three distinct water masses: Interglacial or recent meteoric water (\delta^{18}\text{O} \approx -10.4\unicode{x2030}) with a poorly evolved chemical and noble gas signature, glacial meltwater (\delta^{18}\text{O} \leq -18\unicode{x2030}) with elevated noble gas concentrations, and an old, high-salinity brine component (\delta^{18}\text{O} \geq -4.5\unicode{x2030}, \geq 90 \text{g Cl}^{-}/\text{L}) with strongly depleted atmospheric noble gas concentrations. The ^{81}Kr measurements are interpreted within this mixing framework to estimate the age of the end-members. Deconvoluted ^{81}Kr ages range from 300 ka to 1.3 Ma for interglacial or recent meteoric water and glacial meltwater. For the brine component, ages exceed the dating range of the ATTA 3 instrument of 1.3 Ma. The radiogenic noble gas components ^{4}He* and ^{40}Ar* are less conclusive but also support an age of > 1 Ma for the brine. Based on the chemical and noble gas concentrations and the dating results, we conclude that the brine originates from evaporated seawater that has been modified by later water-rock interaction. As the obtained tracer ages cover several glacial cycles, we discuss the impact of the glacial cycles on flow patterns in the studied aquifer system. Physics Geophysics Vaikmäe, Rein oth Aeschbach, Werner oth Babre, Alise oth Jiang, Wei oth Leuenberger, Markus oth Lu, Zheng-Tian oth Mokrik, Robert oth Müller, Peter oth Raidla, Valle oth Saks, Tomas oth Niklaus Waber, H oth Weissbach, Therese oth Zappala, Jake C oth Purtschert, Roland oth Enthalten in Geochimica et cosmochimica acta New York, NY : Elsevier Science, 1951 (2017) (DE-627)129882968 (DE-600)300305-X (DE-576)015179354 0016-7037 nnns year:2017 http://dx.doi.org/10.1016/j.gca.2017.01.033 Volltext http://arxiv.org/abs/1701.06013 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_21 GBV_ILN_70 GBV_ILN_154 GBV_ILN_188 GBV_ILN_600 GBV_ILN_2279 GBV_ILN_4323 TE 1000 AR 2017 |
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10.1016/j.gca.2017.01.033 doi PQ20170501 (DE-627)OLC1990519490 (DE-599)GBVOLC1990519490 (PRQ)a803-704a9c0966f3ca3dcb795c864180bb7b17fbd9a574fda6c3eb2127233a43d0be0 (KEY)0047876820170000000000000000using81krandnoblegasestocharacterizeanddategroundw DE-627 ger DE-627 rakwb eng 550 DNB TE 1000 AVZ rvk Gerber, Christoph verfasserin aut Using 81Kr and Noble Gases to Characterize and Date Groundwater and Brines in the Baltic Artesian Basin on the One-Million-Year Timescale 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Analyses for ^{81}Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover the flow dynamics of the system on a timescale of several hundred thousand years. We find that the system is controlled by mixing of three distinct water masses: Interglacial or recent meteoric water (\delta^{18}\text{O} \approx -10.4\unicode{x2030}) with a poorly evolved chemical and noble gas signature, glacial meltwater (\delta^{18}\text{O} \leq -18\unicode{x2030}) with elevated noble gas concentrations, and an old, high-salinity brine component (\delta^{18}\text{O} \geq -4.5\unicode{x2030}, \geq 90 \text{g Cl}^{-}/\text{L}) with strongly depleted atmospheric noble gas concentrations. The ^{81}Kr measurements are interpreted within this mixing framework to estimate the age of the end-members. Deconvoluted ^{81}Kr ages range from 300 ka to 1.3 Ma for interglacial or recent meteoric water and glacial meltwater. For the brine component, ages exceed the dating range of the ATTA 3 instrument of 1.3 Ma. The radiogenic noble gas components ^{4}He* and ^{40}Ar* are less conclusive but also support an age of > 1 Ma for the brine. Based on the chemical and noble gas concentrations and the dating results, we conclude that the brine originates from evaporated seawater that has been modified by later water-rock interaction. As the obtained tracer ages cover several glacial cycles, we discuss the impact of the glacial cycles on flow patterns in the studied aquifer system. Physics Geophysics Vaikmäe, Rein oth Aeschbach, Werner oth Babre, Alise oth Jiang, Wei oth Leuenberger, Markus oth Lu, Zheng-Tian oth Mokrik, Robert oth Müller, Peter oth Raidla, Valle oth Saks, Tomas oth Niklaus Waber, H oth Weissbach, Therese oth Zappala, Jake C oth Purtschert, Roland oth Enthalten in Geochimica et cosmochimica acta New York, NY : Elsevier Science, 1951 (2017) (DE-627)129882968 (DE-600)300305-X (DE-576)015179354 0016-7037 nnns year:2017 http://dx.doi.org/10.1016/j.gca.2017.01.033 Volltext http://arxiv.org/abs/1701.06013 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_21 GBV_ILN_70 GBV_ILN_154 GBV_ILN_188 GBV_ILN_600 GBV_ILN_2279 GBV_ILN_4323 TE 1000 AR 2017 |
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10.1016/j.gca.2017.01.033 doi PQ20170501 (DE-627)OLC1990519490 (DE-599)GBVOLC1990519490 (PRQ)a803-704a9c0966f3ca3dcb795c864180bb7b17fbd9a574fda6c3eb2127233a43d0be0 (KEY)0047876820170000000000000000using81krandnoblegasestocharacterizeanddategroundw DE-627 ger DE-627 rakwb eng 550 DNB TE 1000 AVZ rvk Gerber, Christoph verfasserin aut Using 81Kr and Noble Gases to Characterize and Date Groundwater and Brines in the Baltic Artesian Basin on the One-Million-Year Timescale 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Analyses for ^{81}Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover the flow dynamics of the system on a timescale of several hundred thousand years. We find that the system is controlled by mixing of three distinct water masses: Interglacial or recent meteoric water (\delta^{18}\text{O} \approx -10.4\unicode{x2030}) with a poorly evolved chemical and noble gas signature, glacial meltwater (\delta^{18}\text{O} \leq -18\unicode{x2030}) with elevated noble gas concentrations, and an old, high-salinity brine component (\delta^{18}\text{O} \geq -4.5\unicode{x2030}, \geq 90 \text{g Cl}^{-}/\text{L}) with strongly depleted atmospheric noble gas concentrations. The ^{81}Kr measurements are interpreted within this mixing framework to estimate the age of the end-members. Deconvoluted ^{81}Kr ages range from 300 ka to 1.3 Ma for interglacial or recent meteoric water and glacial meltwater. For the brine component, ages exceed the dating range of the ATTA 3 instrument of 1.3 Ma. The radiogenic noble gas components ^{4}He* and ^{40}Ar* are less conclusive but also support an age of > 1 Ma for the brine. Based on the chemical and noble gas concentrations and the dating results, we conclude that the brine originates from evaporated seawater that has been modified by later water-rock interaction. As the obtained tracer ages cover several glacial cycles, we discuss the impact of the glacial cycles on flow patterns in the studied aquifer system. Physics Geophysics Vaikmäe, Rein oth Aeschbach, Werner oth Babre, Alise oth Jiang, Wei oth Leuenberger, Markus oth Lu, Zheng-Tian oth Mokrik, Robert oth Müller, Peter oth Raidla, Valle oth Saks, Tomas oth Niklaus Waber, H oth Weissbach, Therese oth Zappala, Jake C oth Purtschert, Roland oth Enthalten in Geochimica et cosmochimica acta New York, NY : Elsevier Science, 1951 (2017) (DE-627)129882968 (DE-600)300305-X (DE-576)015179354 0016-7037 nnns year:2017 http://dx.doi.org/10.1016/j.gca.2017.01.033 Volltext http://arxiv.org/abs/1701.06013 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_21 GBV_ILN_70 GBV_ILN_154 GBV_ILN_188 GBV_ILN_600 GBV_ILN_2279 GBV_ILN_4323 TE 1000 AR 2017 |
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10.1016/j.gca.2017.01.033 doi PQ20170501 (DE-627)OLC1990519490 (DE-599)GBVOLC1990519490 (PRQ)a803-704a9c0966f3ca3dcb795c864180bb7b17fbd9a574fda6c3eb2127233a43d0be0 (KEY)0047876820170000000000000000using81krandnoblegasestocharacterizeanddategroundw DE-627 ger DE-627 rakwb eng 550 DNB TE 1000 AVZ rvk Gerber, Christoph verfasserin aut Using 81Kr and Noble Gases to Characterize and Date Groundwater and Brines in the Baltic Artesian Basin on the One-Million-Year Timescale 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Analyses for ^{81}Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover the flow dynamics of the system on a timescale of several hundred thousand years. We find that the system is controlled by mixing of three distinct water masses: Interglacial or recent meteoric water (\delta^{18}\text{O} \approx -10.4\unicode{x2030}) with a poorly evolved chemical and noble gas signature, glacial meltwater (\delta^{18}\text{O} \leq -18\unicode{x2030}) with elevated noble gas concentrations, and an old, high-salinity brine component (\delta^{18}\text{O} \geq -4.5\unicode{x2030}, \geq 90 \text{g Cl}^{-}/\text{L}) with strongly depleted atmospheric noble gas concentrations. The ^{81}Kr measurements are interpreted within this mixing framework to estimate the age of the end-members. Deconvoluted ^{81}Kr ages range from 300 ka to 1.3 Ma for interglacial or recent meteoric water and glacial meltwater. For the brine component, ages exceed the dating range of the ATTA 3 instrument of 1.3 Ma. The radiogenic noble gas components ^{4}He* and ^{40}Ar* are less conclusive but also support an age of > 1 Ma for the brine. Based on the chemical and noble gas concentrations and the dating results, we conclude that the brine originates from evaporated seawater that has been modified by later water-rock interaction. As the obtained tracer ages cover several glacial cycles, we discuss the impact of the glacial cycles on flow patterns in the studied aquifer system. Physics Geophysics Vaikmäe, Rein oth Aeschbach, Werner oth Babre, Alise oth Jiang, Wei oth Leuenberger, Markus oth Lu, Zheng-Tian oth Mokrik, Robert oth Müller, Peter oth Raidla, Valle oth Saks, Tomas oth Niklaus Waber, H oth Weissbach, Therese oth Zappala, Jake C oth Purtschert, Roland oth Enthalten in Geochimica et cosmochimica acta New York, NY : Elsevier Science, 1951 (2017) (DE-627)129882968 (DE-600)300305-X (DE-576)015179354 0016-7037 nnns year:2017 http://dx.doi.org/10.1016/j.gca.2017.01.033 Volltext http://arxiv.org/abs/1701.06013 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_21 GBV_ILN_70 GBV_ILN_154 GBV_ILN_188 GBV_ILN_600 GBV_ILN_2279 GBV_ILN_4323 TE 1000 AR 2017 |
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Gerber, Christoph @@aut@@ Vaikmäe, Rein @@oth@@ Aeschbach, Werner @@oth@@ Babre, Alise @@oth@@ Jiang, Wei @@oth@@ Leuenberger, Markus @@oth@@ Lu, Zheng-Tian @@oth@@ Mokrik, Robert @@oth@@ Müller, Peter @@oth@@ Raidla, Valle @@oth@@ Saks, Tomas @@oth@@ Niklaus Waber, H @@oth@@ Weissbach, Therese @@oth@@ Zappala, Jake C @@oth@@ Purtschert, Roland @@oth@@ |
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using 81kr and noble gases to characterize and date groundwater and brines in the baltic artesian basin on the one-million-year timescale |
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Using 81Kr and Noble Gases to Characterize and Date Groundwater and Brines in the Baltic Artesian Basin on the One-Million-Year Timescale |
| abstract |
Analyses for ^{81}Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover the flow dynamics of the system on a timescale of several hundred thousand years. We find that the system is controlled by mixing of three distinct water masses: Interglacial or recent meteoric water (\delta^{18}\text{O} \approx -10.4\unicode{x2030}) with a poorly evolved chemical and noble gas signature, glacial meltwater (\delta^{18}\text{O} \leq -18\unicode{x2030}) with elevated noble gas concentrations, and an old, high-salinity brine component (\delta^{18}\text{O} \geq -4.5\unicode{x2030}, \geq 90 \text{g Cl}^{-}/\text{L}) with strongly depleted atmospheric noble gas concentrations. The ^{81}Kr measurements are interpreted within this mixing framework to estimate the age of the end-members. Deconvoluted ^{81}Kr ages range from 300 ka to 1.3 Ma for interglacial or recent meteoric water and glacial meltwater. For the brine component, ages exceed the dating range of the ATTA 3 instrument of 1.3 Ma. The radiogenic noble gas components ^{4}He* and ^{40}Ar* are less conclusive but also support an age of > 1 Ma for the brine. Based on the chemical and noble gas concentrations and the dating results, we conclude that the brine originates from evaporated seawater that has been modified by later water-rock interaction. As the obtained tracer ages cover several glacial cycles, we discuss the impact of the glacial cycles on flow patterns in the studied aquifer system. |
| abstractGer |
Analyses for ^{81}Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover the flow dynamics of the system on a timescale of several hundred thousand years. We find that the system is controlled by mixing of three distinct water masses: Interglacial or recent meteoric water (\delta^{18}\text{O} \approx -10.4\unicode{x2030}) with a poorly evolved chemical and noble gas signature, glacial meltwater (\delta^{18}\text{O} \leq -18\unicode{x2030}) with elevated noble gas concentrations, and an old, high-salinity brine component (\delta^{18}\text{O} \geq -4.5\unicode{x2030}, \geq 90 \text{g Cl}^{-}/\text{L}) with strongly depleted atmospheric noble gas concentrations. The ^{81}Kr measurements are interpreted within this mixing framework to estimate the age of the end-members. Deconvoluted ^{81}Kr ages range from 300 ka to 1.3 Ma for interglacial or recent meteoric water and glacial meltwater. For the brine component, ages exceed the dating range of the ATTA 3 instrument of 1.3 Ma. The radiogenic noble gas components ^{4}He* and ^{40}Ar* are less conclusive but also support an age of > 1 Ma for the brine. Based on the chemical and noble gas concentrations and the dating results, we conclude that the brine originates from evaporated seawater that has been modified by later water-rock interaction. As the obtained tracer ages cover several glacial cycles, we discuss the impact of the glacial cycles on flow patterns in the studied aquifer system. |
| abstract_unstemmed |
Analyses for ^{81}Kr and noble gases on groundwater from the deepest aquifer system of the Baltic Artesian Basin (BAB) were performed to determine groundwater ages and uncover the flow dynamics of the system on a timescale of several hundred thousand years. We find that the system is controlled by mixing of three distinct water masses: Interglacial or recent meteoric water (\delta^{18}\text{O} \approx -10.4\unicode{x2030}) with a poorly evolved chemical and noble gas signature, glacial meltwater (\delta^{18}\text{O} \leq -18\unicode{x2030}) with elevated noble gas concentrations, and an old, high-salinity brine component (\delta^{18}\text{O} \geq -4.5\unicode{x2030}, \geq 90 \text{g Cl}^{-}/\text{L}) with strongly depleted atmospheric noble gas concentrations. The ^{81}Kr measurements are interpreted within this mixing framework to estimate the age of the end-members. Deconvoluted ^{81}Kr ages range from 300 ka to 1.3 Ma for interglacial or recent meteoric water and glacial meltwater. For the brine component, ages exceed the dating range of the ATTA 3 instrument of 1.3 Ma. The radiogenic noble gas components ^{4}He* and ^{40}Ar* are less conclusive but also support an age of > 1 Ma for the brine. Based on the chemical and noble gas concentrations and the dating results, we conclude that the brine originates from evaporated seawater that has been modified by later water-rock interaction. As the obtained tracer ages cover several glacial cycles, we discuss the impact of the glacial cycles on flow patterns in the studied aquifer system. |
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| title_short |
Using 81Kr and Noble Gases to Characterize and Date Groundwater and Brines in the Baltic Artesian Basin on the One-Million-Year Timescale |
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Vaikmäe, Rein Aeschbach, Werner Babre, Alise Jiang, Wei Leuenberger, Markus Lu, Zheng-Tian Mokrik, Robert Müller, Peter Raidla, Valle Saks, Tomas Niklaus Waber, H Weissbach, Therese Zappala, Jake C Purtschert, Roland |
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We find that the system is controlled by mixing of three distinct water masses: Interglacial or recent meteoric water (\delta^{18}\text{O} \approx -10.4\unicode{x2030}) with a poorly evolved chemical and noble gas signature, glacial meltwater (\delta^{18}\text{O} \leq -18\unicode{x2030}) with elevated noble gas concentrations, and an old, high-salinity brine component (\delta^{18}\text{O} \geq -4.5\unicode{x2030}, \geq 90 \text{g Cl}^{-}/\text{L}) with strongly depleted atmospheric noble gas concentrations. The ^{81}Kr measurements are interpreted within this mixing framework to estimate the age of the end-members. Deconvoluted ^{81}Kr ages range from 300 ka to 1.3 Ma for interglacial or recent meteoric water and glacial meltwater. For the brine component, ages exceed the dating range of the ATTA 3 instrument of 1.3 Ma. The radiogenic noble gas components ^{4}He* and ^{40}Ar* are less conclusive but also support an age of > 1 Ma for the brine. Based on the chemical and noble gas concentrations and the dating results, we conclude that the brine originates from evaporated seawater that has been modified by later water-rock interaction. As the obtained tracer ages cover several glacial cycles, we discuss the impact of the glacial cycles on flow patterns in the studied aquifer system.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Physics</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Geophysics</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Vaikmäe, Rein</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Aeschbach, Werner</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Babre, Alise</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Jiang, Wei</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Leuenberger, Markus</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Lu, Zheng-Tian</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Mokrik, Robert</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Müller, Peter</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Raidla, Valle</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Saks, Tomas</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Niklaus Waber, H</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Weissbach, Therese</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Zappala, Jake C</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Purtschert, Roland</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Geochimica et cosmochimica acta</subfield><subfield code="d">New York, NY : Elsevier Science, 1951</subfield><subfield code="g">(2017)</subfield><subfield code="w">(DE-627)129882968</subfield><subfield code="w">(DE-600)300305-X</subfield><subfield code="w">(DE-576)015179354</subfield><subfield code="x">0016-7037</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">year:2017</subfield></datafield><datafield tag="856" ind1="4" ind2="1"><subfield code="u">http://dx.doi.org/10.1016/j.gca.2017.01.033</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="856" ind1="4" ind2="2"><subfield code="u">http://arxiv.org/abs/1701.06013</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_OLC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-GEO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-AST</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-GGO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-AST</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_21</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_70</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_154</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_188</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_600</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2279</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4323</subfield></datafield><datafield tag="936" ind1="r" ind2="v"><subfield code="a">TE 1000</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="j">2017</subfield></datafield></record></collection>
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