Tectonic-sourced groundwater arsenic in Andean foreland of Argentina: insight from flow path modeling
Paper
Mukherjee, A., Raychowdhury, N., Bhattacharya, P., Bundschuh, J. and Johannesson, K.. 2014. "Tectonic-sourced groundwater arsenic in Andean foreland of Argentina: insight from flow path modeling." Litter, Marta I., Quici, Natalia and Meichtry, Martin (ed.) 5th International Congress on Arsenic in the Environment (AS 2014): One Century of the Discovery of Arsenicosis in Latin America (1914-2014). Buenos Aires, Argentina 11 - 16 May 2014 Leiden, Netherlands.
| Paper/Presentation Title | Tectonic-sourced groundwater arsenic in Andean foreland of Argentina: insight from flow path modeling |
|---|---|
| Presentation Type | Paper |
| Authors | Mukherjee, A. (Author), Raychowdhury, N. (Author), Bhattacharya, P. (Author), Bundschuh, J. (Author) and Johannesson, K. (Author) |
| Editors | Litter, Marta I., Quici, Natalia and Meichtry, Martin |
| Journal or Proceedings Title | Proceedings of the 5th International Congress on Arsenic in the Environment (AS 2014) |
| Number of Pages | 4 |
| Year | 2014 |
| Place of Publication | Leiden, Netherlands |
| ISBN | 9781138001411 |
| 9781315778884 | |
| Conference/Event | 5th International Congress on Arsenic in the Environment (AS 2014): One Century of the Discovery of Arsenicosis in Latin America (1914-2014) |
| Event Details | 5th International Congress on Arsenic in the Environment (AS 2014): One Century of the Discovery of Arsenicosis in Latin America (1914-2014) Parent International Congress on Arsenic in the Environment (AS) Event Date 11 to end of 16 May 2014 Event Location Buenos Aires, Argentina |
| Abstract | The groundwater arsenic enriched Chaco-Pampean plain of Argentina is located in the active foreland of continental arc dominated Andean orogenic belt. Rhyolitic volcanic glass fragments are a major component of the aeolian-fluvial aquifer sediments, which is dotted with many hot springs that are related to the palaeo-igneous extrusion in the vicinity. Several Salinas in the areas may have originated because of the tectonic evolution of the region. Hydrogeochemical analyses, thermodynamic mixing diagrams and flow path modeling analyses of groundwater samples collected from the Santiago del Estero province suggest that predominant evolutionary processes of the groundwater include chemical weathering with monosialitization silicate of weathering and evaporate dissolution. Anorthite, albite and As-enriched volcanic glass seems to contribute to the major dissolution phases. Subsequently, co-introduced oxyions mobilized the solid-phase As to groundwater by competitive ion exchanged. Further liberation might have taken place by counter-ion activity due to transition of the Ca-rich to Na-rich groundwater due to groundwater mixing with recharged brackish surface water from Salinas or by evaporative concentration due to the prevailing arid climate. |
| Keywords | aquifers; arsenic; dissolution; glass; hot springs; ion exchange; silicates; tectonics; volcanoes; weathering |
| ANZSRC Field of Research 2020 | 370511. Structural geology and tectonics |
| 370799. Hydrology not elsewhere classified | |
| 370104. Atmospheric composition, chemistry and processes | |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | Indian Institute of Technology, India |
| KTH Royal Institute of Technology, Sweden | |
| National Centre for Engineering in Agriculture | |
| Tulane University, United States | |
| Institution of Origin | University of Southern Queensland |
| Book Title | One century of the discovery of arsenicosis in Latin America (1914–2014): proceedings of the 5th international congress on arsenic in the environment |
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