Assessing Groundwater Age in Confined Aquifers from the Central Pampean Plain of Cordoba, Argentina
In Córdoba Province, Argentina, the population uses groundwater from confined aquifer systems (CASs) for different activities. Therefore, it is necessary to carry out comprehensive studies in order to plan more sustainable use considering that groundwater renewal times can be of several thousands of...
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2016
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paper:paper_00338222_v58_n4_p833_Maldonado2023-06-08T15:00:37Z Assessing Groundwater Age in Confined Aquifers from the Central Pampean Plain of Cordoba, Argentina Argentina confined aquifer groundwater age isotopes age determination confined aquifer depth flow pattern groundwater Holocene Hypsithermal isotope Little Ice Age Neogene paleoenvironment recharge Argentina Cordoba [Argentina] Pampas In Córdoba Province, Argentina, the population uses groundwater from confined aquifer systems (CASs) for different activities. Therefore, it is necessary to carry out comprehensive studies in order to plan more sustainable use considering that groundwater renewal times can be of several thousands of years. The objective of this research is to evaluate groundwater age in confined aquifers based on hydraulic and isotopic methods. The CASs present variable extension, are multilayered and formed by thin (4-6 m) sand-pebble lenses, and are linked to Neogene fluvial paleosystems. These layers are situated at different depths (120-400 m) and interbedded with thick clay strata. The interpretations made from 2H, 18O, and 3H results and hydraulic calculations suggest that the groundwater is old. Furthermore, an age gradient was observed that increases with depth and flow direction. The 14C ages obtained for the CASs labeled A2, C, and D were 3.6-1.1 ka BP, 10.8 ka BP, and 46.0-40.5 ka BP, respectively. These results indicate that A2 and C contain groundwater recharged during Holocene cold periods, between the Little Ice Age and the ending of the Holocene Climatic Optimum and during the last glaciation. The D CAS contains paleowater that was recharged during the Pleistocene. © 2016 by the Arizona Board of Regents on behalf of the University of Arizona. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00338222_v58_n4_p833_Maldonado http://hdl.handle.net/20.500.12110/paper_00338222_v58_n4_p833_Maldonado |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Argentina confined aquifer groundwater age isotopes age determination confined aquifer depth flow pattern groundwater Holocene Hypsithermal isotope Little Ice Age Neogene paleoenvironment recharge Argentina Cordoba [Argentina] Pampas |
| spellingShingle |
Argentina confined aquifer groundwater age isotopes age determination confined aquifer depth flow pattern groundwater Holocene Hypsithermal isotope Little Ice Age Neogene paleoenvironment recharge Argentina Cordoba [Argentina] Pampas Assessing Groundwater Age in Confined Aquifers from the Central Pampean Plain of Cordoba, Argentina |
| topic_facet |
Argentina confined aquifer groundwater age isotopes age determination confined aquifer depth flow pattern groundwater Holocene Hypsithermal isotope Little Ice Age Neogene paleoenvironment recharge Argentina Cordoba [Argentina] Pampas |
| description |
In Córdoba Province, Argentina, the population uses groundwater from confined aquifer systems (CASs) for different activities. Therefore, it is necessary to carry out comprehensive studies in order to plan more sustainable use considering that groundwater renewal times can be of several thousands of years. The objective of this research is to evaluate groundwater age in confined aquifers based on hydraulic and isotopic methods. The CASs present variable extension, are multilayered and formed by thin (4-6 m) sand-pebble lenses, and are linked to Neogene fluvial paleosystems. These layers are situated at different depths (120-400 m) and interbedded with thick clay strata. The interpretations made from 2H, 18O, and 3H results and hydraulic calculations suggest that the groundwater is old. Furthermore, an age gradient was observed that increases with depth and flow direction. The 14C ages obtained for the CASs labeled A2, C, and D were 3.6-1.1 ka BP, 10.8 ka BP, and 46.0-40.5 ka BP, respectively. These results indicate that A2 and C contain groundwater recharged during Holocene cold periods, between the Little Ice Age and the ending of the Holocene Climatic Optimum and during the last glaciation. The D CAS contains paleowater that was recharged during the Pleistocene. © 2016 by the Arizona Board of Regents on behalf of the University of Arizona. |
| title |
Assessing Groundwater Age in Confined Aquifers from the Central Pampean Plain of Cordoba, Argentina |
| title_short |
Assessing Groundwater Age in Confined Aquifers from the Central Pampean Plain of Cordoba, Argentina |
| title_full |
Assessing Groundwater Age in Confined Aquifers from the Central Pampean Plain of Cordoba, Argentina |
| title_fullStr |
Assessing Groundwater Age in Confined Aquifers from the Central Pampean Plain of Cordoba, Argentina |
| title_full_unstemmed |
Assessing Groundwater Age in Confined Aquifers from the Central Pampean Plain of Cordoba, Argentina |
| title_sort |
assessing groundwater age in confined aquifers from the central pampean plain of cordoba, argentina |
| publishDate |
2016 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00338222_v58_n4_p833_Maldonado http://hdl.handle.net/20.500.12110/paper_00338222_v58_n4_p833_Maldonado |
| _version_ |
1768542977623326720 |