<abstract xmlns="http://www.w3.org/1999/xhtml">

For the present study, geochemical ages were derived from radiocarbon and radiokrypton age calibration with ground-water chemical contents (Na+, K+, Mg2+, Ca2+, Cl−, SO42−, HCO3−). Geochemical ages may fill the dating gap (40–150 ka) between the isotope techniques mentioned. A case study of groundwater in the Baltic Artesian Basin has involved geochemical age calibration, data filtering (such as regional subdivision of the basin for more accurate results) and geochemical dating of groundwater of unknown age. Various approaches to interpretations of geochemical age results could be used. Bicarbonate and sulphate are sensitive to the hydrochemical environment and should be omitted from geochemical age calculations. Modern fresh groundwater samples should also be excluded from calibration in order to obtain more reliable trend lines. Calcium-sodium cation exchange occurs in deep aquifers and may be used for geo-chemical age determination of fossil groundwater.
</abstract>

For the present study, geochemical ages were derived from radiocarbon and radiokrypton age calibration with ground-water chemical contents (Na+, K+, Mg2+, Ca2+, Cl−, SO42−, HCO3−). Geochemical ages may fill the dating gap (40–150 ka) between the isotope techniques mentioned. A case study of groundwater in the Baltic Artesian Basin has involved geochemical age calibration, data filtering (such as regional subdivision of the basin for more accurate results) and geochemical dating of groundwater of unknown age. Various approaches to interpretations of geochemical age results could be used. Bicarbonate and sulphate are sensitive to the hydrochemical environment and should be omitted from geochemical age calculations. Modern fresh groundwater samples should also be excluded from calibration in order to obtain more reliable trend lines. Calcium-sodium cation exchange occurs in deep aquifers and may be used for geo-chemical age determination of fossil groundwater.

Calibrated geochemical ages of the Baltic Artesian Basin groundwater

Institute of Geosciences at Vilnius University

Geologos

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Calibrated geochemical ages of the Baltic Artesian Basin groundwater"}

For the present study, geochemical ages were derived from radiocarbon and radiokrypton age calibration with ground-water chemical contents (Na+, K+, Mg2+,...

Calibrated geochemical ages of the Baltic Artesian Basin groundwater

Publié en ligne: 30 déc. 2022

Pages: 179 - 189

Reçu: 03 juil. 2022

Accepté: 23 oct. 2022

DOI: https://doi.org/10.14746/logos.2022.28.3.0001

Mots clés
groundwater dating, isotope geochemistry, radiocarbon, radiokrypton

© 2022 Vytautas Samalavičius et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Calibrated geochemical ages of the Baltic Artesian Basin groundwater

Publié en ligne: 30 déc. 2022

Pages: 179 - 189

Reçu: 03 juil. 2022

Accepté: 23 oct. 2022

DOI: https://doi.org/10.14746/logos.2022.28.3.0001

Mots clésgroundwater dating, isotope geochemistry, radiocarbon, radiokrypton

© 2022 Vytautas Samalavičius et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
groundwater dating, isotope geochemistry, radiocarbon, radiokrypton