Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina

Autores
Carol, Eleonora Silvina; García, Leandro; Borzi, Guido Esteban
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Freshwater lenses constitute one of the most vulnerable aquifer systems in the world, especially in coastal wetland areas. The objectives of this work are to determine the hydrogeochemical processes that regulate the quality of the freshwater lenses in a sector of the Samborombón Bay wetland, and to assess their sustainability as regards the development of mining activities. A hydrochemical evaluation of groundwater was undertaken on the basis of major ion, trace and environmental isotope data. The deterioration in time of the freshwater lenses in relation to mining was studied on the basis of the analysis of topographic charts, aerial photography and satellite imaging. The results obtained show that the CO2(g) that dissolves in the rainwater infiltrating and recharging the lenses is converted to HCO3-, which dissolves the carbonate facies of the sediment. The exchange of Ca2+ for Na+, the incongruent dissolution of basic plagioclase and the reprecipitation of carbonate produce a change of the Ca-HCO3 facies to Na-HCO3. In depth, the pH increases with the groundwater flow, and the volcanic glassis dissolved, releasing F-and As. Besides, the evapotranspiration processes cause the saline content to increase slightly. As the only sources of drinking water in the region are the freshwater lenses occurring in the shell ridges, mining operations have deteriorated this resource and decreased the freshwater reserves in the lenses. The study undertaken made it possible to develop some preservation, remediation and management guidelines aimed at the sustainability of the water resources in the region.
Fil: Carol, Eleonora Silvina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: García, Leandro. Ministerio de Ciencia. Tecnología e Innovación Productiva. Agencia Nacional de Promoción Cientifíca y Tecnológica; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Borzi, Guido Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Materia
FRESHWATER RESOURCES
HYDROGEOCHEMISTRY
MINING
SHELL RIDGE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/49206
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/49206
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, ArgentinaCarol, Eleonora SilvinaGarcía, LeandroBorzi, Guido EstebanFRESHWATER RESOURCESHYDROGEOCHEMISTRYMININGSHELL RIDGEhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Freshwater lenses constitute one of the most vulnerable aquifer systems in the world, especially in coastal wetland areas. The objectives of this work are to determine the hydrogeochemical processes that regulate the quality of the freshwater lenses in a sector of the Samborombón Bay wetland, and to assess their sustainability as regards the development of mining activities. A hydrochemical evaluation of groundwater was undertaken on the basis of major ion, trace and environmental isotope data. The deterioration in time of the freshwater lenses in relation to mining was studied on the basis of the analysis of topographic charts, aerial photography and satellite imaging. The results obtained show that the CO2(g) that dissolves in the rainwater infiltrating and recharging the lenses is converted to HCO3-, which dissolves the carbonate facies of the sediment. The exchange of Ca2+ for Na+, the incongruent dissolution of basic plagioclase and the reprecipitation of carbonate produce a change of the Ca-HCO3 facies to Na-HCO3. In depth, the pH increases with the groundwater flow, and the volcanic glassis dissolved, releasing F-and As. Besides, the evapotranspiration processes cause the saline content to increase slightly. As the only sources of drinking water in the region are the freshwater lenses occurring in the shell ridges, mining operations have deteriorated this resource and decreased the freshwater reserves in the lenses. The study undertaken made it possible to develop some preservation, remediation and management guidelines aimed at the sustainability of the water resources in the region.Fil: Carol, Eleonora Silvina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: García, Leandro. Ministerio de Ciencia. Tecnología e Innovación Productiva. Agencia Nacional de Promoción Cientifíca y Tecnológica; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Borzi, Guido Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaPergamon-Elsevier Science Ltd2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/49206Carol, Eleonora Silvina; García, Leandro; Borzi, Guido Esteban; Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 60; 7-2015; 21-300895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981115000371info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2015.03.002info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:44Zoai:ri.conicet.gov.ar:11336/49206instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:04:44.598CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina
title Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina
spellingShingle Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina
Carol, Eleonora Silvina
FRESHWATER RESOURCES
HYDROGEOCHEMISTRY
MINING
SHELL RIDGE
title_short Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina
title_full Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina
title_fullStr Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina
title_full_unstemmed Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina
title_sort Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina
dc.creator.none.fl_str_mv Carol, Eleonora Silvina
García, Leandro
Borzi, Guido Esteban
author Carol, Eleonora Silvina
author_facet Carol, Eleonora Silvina
García, Leandro
Borzi, Guido Esteban
author_role author
author2 García, Leandro
Borzi, Guido Esteban
author2_role author
author
dc.subject.none.fl_str_mv FRESHWATER RESOURCES
HYDROGEOCHEMISTRY
MINING
SHELL RIDGE
topic FRESHWATER RESOURCES
HYDROGEOCHEMISTRY
MINING
SHELL RIDGE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Freshwater lenses constitute one of the most vulnerable aquifer systems in the world, especially in coastal wetland areas. The objectives of this work are to determine the hydrogeochemical processes that regulate the quality of the freshwater lenses in a sector of the Samborombón Bay wetland, and to assess their sustainability as regards the development of mining activities. A hydrochemical evaluation of groundwater was undertaken on the basis of major ion, trace and environmental isotope data. The deterioration in time of the freshwater lenses in relation to mining was studied on the basis of the analysis of topographic charts, aerial photography and satellite imaging. The results obtained show that the CO2(g) that dissolves in the rainwater infiltrating and recharging the lenses is converted to HCO3-, which dissolves the carbonate facies of the sediment. The exchange of Ca2+ for Na+, the incongruent dissolution of basic plagioclase and the reprecipitation of carbonate produce a change of the Ca-HCO3 facies to Na-HCO3. In depth, the pH increases with the groundwater flow, and the volcanic glassis dissolved, releasing F-and As. Besides, the evapotranspiration processes cause the saline content to increase slightly. As the only sources of drinking water in the region are the freshwater lenses occurring in the shell ridges, mining operations have deteriorated this resource and decreased the freshwater reserves in the lenses. The study undertaken made it possible to develop some preservation, remediation and management guidelines aimed at the sustainability of the water resources in the region.
Fil: Carol, Eleonora Silvina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: García, Leandro. Ministerio de Ciencia. Tecnología e Innovación Productiva. Agencia Nacional de Promoción Cientifíca y Tecnológica; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Borzi, Guido Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
description Freshwater lenses constitute one of the most vulnerable aquifer systems in the world, especially in coastal wetland areas. The objectives of this work are to determine the hydrogeochemical processes that regulate the quality of the freshwater lenses in a sector of the Samborombón Bay wetland, and to assess their sustainability as regards the development of mining activities. A hydrochemical evaluation of groundwater was undertaken on the basis of major ion, trace and environmental isotope data. The deterioration in time of the freshwater lenses in relation to mining was studied on the basis of the analysis of topographic charts, aerial photography and satellite imaging. The results obtained show that the CO2(g) that dissolves in the rainwater infiltrating and recharging the lenses is converted to HCO3-, which dissolves the carbonate facies of the sediment. The exchange of Ca2+ for Na+, the incongruent dissolution of basic plagioclase and the reprecipitation of carbonate produce a change of the Ca-HCO3 facies to Na-HCO3. In depth, the pH increases with the groundwater flow, and the volcanic glassis dissolved, releasing F-and As. Besides, the evapotranspiration processes cause the saline content to increase slightly. As the only sources of drinking water in the region are the freshwater lenses occurring in the shell ridges, mining operations have deteriorated this resource and decreased the freshwater reserves in the lenses. The study undertaken made it possible to develop some preservation, remediation and management guidelines aimed at the sustainability of the water resources in the region.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/49206
Carol, Eleonora Silvina; García, Leandro; Borzi, Guido Esteban; Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 60; 7-2015; 21-30
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/49206
identifier_str_mv Carol, Eleonora Silvina; García, Leandro; Borzi, Guido Esteban; Hydrogeochemistry and sustainability of freshwater lenses in the Samborombón Bay wetland, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 60; 7-2015; 21-30
0895-9811
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981115000371
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2015.03.002
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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