Electrical imaging of an alluvial aquifer at the Antinaco-Los Colorados tectonic valley in the Sierras Pampeanas, Argentina

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The Antinaco-Los Colorados valley is a wide N-S tectonic depression, located between the Sa. de Velazco and the Sa. de Famatina, both ranges belonging to the Sierras Pampeanas thick-skinned deformation province in Argentina. From previously reported magnetotelluric (MT) data, it is known that the th...

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Autores principales: Osella, A., Favetto, A., Martinelli, P., Cernadas, D.
Formato: JOUR
Materias:
Alluvial aquifer
Antinaco-Los Colorados valley
Argentina
Sierras Pampeanas
Aquifers
Mathematical models
Tectonics
Alluvial aquifers
Electric sounding
Tectonic depression
Electric prospecting
alluvial deposit
aquifer
electrical method
imaging method
overburden
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09269851_v41_n4_p359_Osella
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09269851_v41_n4_p359_Osella2023-10-03T15:46:48Z Electrical imaging of an alluvial aquifer at the Antinaco-Los Colorados tectonic valley in the Sierras Pampeanas, Argentina Osella, A. Favetto, A. Martinelli, P. Cernadas, D. Alluvial aquifer Antinaco-Los Colorados valley Argentina Sierras Pampeanas Aquifers Mathematical models Tectonics Alluvial aquifers Electric sounding Tectonic depression Electric prospecting alluvial deposit aquifer electrical method imaging method overburden Argentina The Antinaco-Los Colorados valley is a wide N-S tectonic depression, located between the Sa. de Velazco and the Sa. de Famatina, both ranges belonging to the Sierras Pampeanas thick-skinned deformation province in Argentina. From previously reported magnetotelluric (MT) data, it is known that the thickness of the sedimentary sequences may reach up to 8 km in the central zone of this basin. In particular, the Quaternary-to-recent alluvial filling contains an aquifer complex of great importance for this semiarid zone providing water for irrigation and also for human consumption. To obtain information about the electrical structure of the alluvial cover, 17 vertical electric soundings were carried out along an E-W traverse profile extending from one side of the valley to the other. A geoelectrical model is proposed taking into account complementary hydrogeological and geophysical information. In this model, the various layers which could contain fresh water are identified and the level of the water table inferred from the model is almost coincident with that observed from existing wells in the surveyed zone. The Antinaco-Los Colorados valley is a wide N-S tectonic depression, located between the Sa. de Velazco and the Sa. de Famatina, both ranges belonging to the Sierras Pampeanas thick-skinned deformation province in Argentina. From previously reported magnetotelluric (MT) data, it is known that the thickness of the sedimentary sequences may reach up to 8 km in the central zone of this basin. In particular, the Quaternary-to-recent alluvial filling contains an aquifer complex of great importance for this semiarid zone providing water for irrigation and also for human consumption. To obtain information about the electrical structure of the alluvial cover, 17 vertical electric soundings were carried out along an E-W traverse profile extending from one side of the valley to the other. A geoelectrical model is proposed taking into account complementary hydrogeological and geophysical information. In this model, the various layers which could contain fresh water are identified and the level of the water table inferred from the model is almost coincident with that observed from existing wells in the surveyed zone. Fil:Osella, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Favetto, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cernadas, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09269851_v41_n4_p359_Osella
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Alluvial aquifer
Antinaco-Los Colorados valley
Argentina
Sierras Pampeanas
Aquifers
Mathematical models
Tectonics
Alluvial aquifers
Electric sounding
Tectonic depression
Electric prospecting
alluvial deposit
aquifer
electrical method
imaging method
overburden
Argentina
spellingShingle Alluvial aquifer
Antinaco-Los Colorados valley
Argentina
Sierras Pampeanas
Aquifers
Mathematical models
Tectonics
Alluvial aquifers
Electric sounding
Tectonic depression
Electric prospecting
alluvial deposit
aquifer
electrical method
imaging method
overburden
Argentina
Osella, A.
Favetto, A.
Martinelli, P.
Cernadas, D.
Electrical imaging of an alluvial aquifer at the Antinaco-Los Colorados tectonic valley in the Sierras Pampeanas, Argentina
topic_facet Alluvial aquifer
Antinaco-Los Colorados valley
Argentina
Sierras Pampeanas
Aquifers
Mathematical models
Tectonics
Alluvial aquifers
Electric sounding
Tectonic depression
Electric prospecting
alluvial deposit
aquifer
electrical method
imaging method
overburden
Argentina
description The Antinaco-Los Colorados valley is a wide N-S tectonic depression, located between the Sa. de Velazco and the Sa. de Famatina, both ranges belonging to the Sierras Pampeanas thick-skinned deformation province in Argentina. From previously reported magnetotelluric (MT) data, it is known that the thickness of the sedimentary sequences may reach up to 8 km in the central zone of this basin. In particular, the Quaternary-to-recent alluvial filling contains an aquifer complex of great importance for this semiarid zone providing water for irrigation and also for human consumption. To obtain information about the electrical structure of the alluvial cover, 17 vertical electric soundings were carried out along an E-W traverse profile extending from one side of the valley to the other. A geoelectrical model is proposed taking into account complementary hydrogeological and geophysical information. In this model, the various layers which could contain fresh water are identified and the level of the water table inferred from the model is almost coincident with that observed from existing wells in the surveyed zone. The Antinaco-Los Colorados valley is a wide N-S tectonic depression, located between the Sa. de Velazco and the Sa. de Famatina, both ranges belonging to the Sierras Pampeanas thick-skinned deformation province in Argentina. From previously reported magnetotelluric (MT) data, it is known that the thickness of the sedimentary sequences may reach up to 8 km in the central zone of this basin. In particular, the Quaternary-to-recent alluvial filling contains an aquifer complex of great importance for this semiarid zone providing water for irrigation and also for human consumption. To obtain information about the electrical structure of the alluvial cover, 17 vertical electric soundings were carried out along an E-W traverse profile extending from one side of the valley to the other. A geoelectrical model is proposed taking into account complementary hydrogeological and geophysical information. In this model, the various layers which could contain fresh water are identified and the level of the water table inferred from the model is almost coincident with that observed from existing wells in the surveyed zone.
format JOUR
author Osella, A.
Favetto, A.
Martinelli, P.
Cernadas, D.
author_facet Osella, A.
Favetto, A.
Martinelli, P.
Cernadas, D.
author_sort Osella, A.
title Electrical imaging of an alluvial aquifer at the Antinaco-Los Colorados tectonic valley in the Sierras Pampeanas, Argentina
title_short Electrical imaging of an alluvial aquifer at the Antinaco-Los Colorados tectonic valley in the Sierras Pampeanas, Argentina
title_full Electrical imaging of an alluvial aquifer at the Antinaco-Los Colorados tectonic valley in the Sierras Pampeanas, Argentina
title_fullStr Electrical imaging of an alluvial aquifer at the Antinaco-Los Colorados tectonic valley in the Sierras Pampeanas, Argentina
title_full_unstemmed Electrical imaging of an alluvial aquifer at the Antinaco-Los Colorados tectonic valley in the Sierras Pampeanas, Argentina
title_sort electrical imaging of an alluvial aquifer at the antinaco-los colorados tectonic valley in the sierras pampeanas, argentina
url http://hdl.handle.net/20.500.12110/paper_09269851_v41_n4_p359_Osella
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AT favettoa electricalimagingofanalluvialaquiferattheantinacoloscoloradostectonicvalleyinthesierraspampeanasargentina
AT martinellip electricalimagingofanalluvialaquiferattheantinacoloscoloradostectonicvalleyinthesierraspampeanasargentina
AT cernadasd electricalimagingofanalluvialaquiferattheantinacoloscoloradostectonicvalleyinthesierraspampeanasargentina
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