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

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Autor principal: Osella, Ana María
Otros Autores: Favetto, Alicia Beatriz, Martinelli, P., Cernadas, Daniel Carlos
Formato: Acta de conferencia Capítulo de libro
Lenguaje:Inglés
Publicado: Elsevier Science Publishers B.V. 1999
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Acceso en línea:Registro en Scopus
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100 1 |a Osella, Ana María 
245 1 0 |a Electrical imaging of an alluvial aquifer at the Antinaco-Los Colorados tectonic valley in the Sierras Pampeanas, Argentina 
260 |b Elsevier Science Publishers B.V.  |c 1999 
270 1 0 |m Osella, A.; Dto. de Fisica-Gr. Geofis. Aplicada, Fac. de Cienc. Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 1, 1428 Buenos Aires, Argentina; email: osella@df.uba.ar 
504 |a Aubry, L., Roperch, P., De Urreiztieta, M., Rosello, E., Chauvin, A., Paleomagnetic study along the southeastern edge of the Altiplano-Puna Plateau: Neogene tectonic rotations (1996) J. Geophys. Res., 101, pp. 17883-17899 
504 |a De Alba, E., Descripción geológica de Chilecito (1979) Serv. Geol. Nac., , 85 pp 
504 |a González Bonorino, F., Algunos problemas geológicos de las Sierras Pampeanas (1950) Assoc. Geol. Argent. Rev., 5, pp. 81-110 
504 |a Jordan, T., Allmendinger, R., Sierras Pampeanas of Argentina: A modern analogue of Rocky Mountain foreland deformation (1986) Am. J. Sci., 286, pp. 737-764 
504 |a Jordan, T.E., Isacks, B.L., Allmendinger, R.W., Brewer, J.A., Ramos, V.A., Ando, C.L., Andean tectonics related to geometry of subducted Nazca Plate (1983) Geol. Soc. Am. Bull., 94, pp. 341-361 
504 |a Jupp, D.L., Vozoff, K., Stable iterative methods for the inversion of geophysical data (1975) Geophys. J. R. Astron. Soc., 42, pp. 957-976 
504 |a Osella, A., Martinelli, P., Cernadas, D., 2D Geoelectrical modeling using a Rayleigh-Fourier method (1998) IEEE Geoscience and Remote Sensing, , submitted 
504 |a Pomposiello, C., Osella, A., Favetto, A., Sainato, C., Martinelli, P., Current channelling and 3D effects detected from MT data at a sedimenatry basin in Sierras Pampeanas, Argentina (1998) Geophys. J. Inter., , in press 
506 |2 openaire  |e Política editorial 
520 3 |a 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.  |l eng 
536 |a Detalles de la financiación: This work was supported by CONICET and the University of Buenos Aires. 
593 |a Dto. de Fis.-Gr. Geofis. Aplicada, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria, Pab. 1, 1428 Buenos Aires, Argentina 
651 4 |a ARGENTINA 
651 4 |a ARGENTINA 
690 1 0 |a ALLUVIAL AQUIFER 
690 1 0 |a ANTINACO-LOS COLORADOS VALLEY 
690 1 0 |a SIERRAS PAMPEANAS 
690 1 0 |a AQUIFERS 
690 1 0 |a MATHEMATICAL MODELS 
690 1 0 |a TECTONICS 
690 1 0 |a ALLUVIAL AQUIFERS 
690 1 0 |a ELECTRIC SOUNDING 
690 1 0 |a TECTONIC DEPRESSION 
690 1 0 |a ELECTRIC PROSPECTING 
690 1 0 |a ALLUVIAL DEPOSIT 
690 1 0 |a AQUIFER 
690 1 0 |a ELECTRICAL METHOD 
690 1 0 |a IMAGING METHOD 
690 1 0 |a OVERBURDEN 
700 1 |a Favetto, Alicia Beatriz 
700 1 |a Martinelli, P. 
700 1 |a Cernadas, Daniel Carlos 
711 2 |c Amsterdam, Netherlands 
773 0 |d Elsevier Science Publishers B.V., 1999  |g v. 41  |h pp. 359-368  |k n. 4  |p J. Appl. Geophys.  |x 09269851  |w (AR-BaUEN)CENRE-5414  |t Journal of Applied Geophysics 
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