dor_id: 4133490

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

561.#.#.u: https://www.geofisica.unam.mx/

650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://revistagi.geofisica.unam.mx/index.php/RGI

351.#.#.b: Geofísica Internacional

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/385/388

100.1.#.a: Cordo, Fernando; Arzate, Jorge; Oleaga, Alejandro

524.#.#.a: Cordo, Fernando, et al. (2012). Structure of the Guaraní aquifer in the surroundings of the Uruguay river from magnetotelluric soundings. Geofísica Internacional; Vol. 51 Núm. 1: Enero 1, 2012; 17-37. Recuperado de https://repositorio.unam.mx/contenidos/4133490

245.1.0.a: Structure of the Guaraní aquifer in the surroundings of the Uruguay river from magnetotelluric soundings

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 2012

264.#.1.c: 2012-01-01

653.#.#.a: sondeos magnetotelúricos; modelo unidimensional; modelo bidimensional; sistema acuífero Guaraní; Guarani aquifer system; magnetotelluric soundings; one-dimensional models; two-dimensional models

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/385

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/385

041.#.7.h: spa

520.3.#.a: We use wide band magnetotelluric soundings to infer the geological and structural surrounding of the Guarani Aquifer System (SAG) in an area of major exploitation. The studied region comprises both sides of the Uruguay river, between latitudes 30º 30’ and 31º 52’ South and longitudes 57º 00’ and 58º 22’ West. A total of 31 AMT and MT soundings were used for the geological interpretation, which were calibrated with 14 deep wells with lithologic information. Prior to a quantitative interpretation of the data, a distortion analysis of the impedance was carried out to define the dimensionality of the predominant geological structures in the zone. The results show that at high frequencies, larger than 1 Hz, the earth behaves as a stratified ground or one-dimensional (1D) earth, excepts at some of the sites where the observed distortion is associated to local geological structures. From the one-dimensional inversion of the impedance determinant of the data set we estimate the distribution of the main lithological units that conform the sedimentary filling in the zone of the Chaco-Paranense basin, including the SAG. The calibration of the obtained models and the assignation of the resistivity ranges of the main geological units were done using seven resistivity logs from deep wells available in the area. The results show that the Precambrian basement becomes deeper towards the west, reaching depths larger than 4 km in the Argentinian side of the studied area. The results also show the existence of a structure near and parallel to Uruguay river, that seems to correspond with a major regional fault, suggesting vertical displacements larger that 2 km. According to this interpretation the Uruguay river is a superficial expression of the deep regional fault having roughly the same azimuth. At frequencies below 1 Hz the ground turns out to be bi-dimensional with a regional strike angle of around 0º, which is consistent with the NS trend of the Uruguay river. Using this information a 2D inversion was performed along four profiles perpendicular to the river to contrast the results obtained using the more simple 1D approach. The 2D models obtained yield consistent results showing similar features and structure for the SAG obtained from the 1D inversion of the invariant of the impedance.doi: https://doi.org/10.22201/igeof.00167169p.2012.51.1.143

773.1.#.t: Geofísica Internacional; Vol. 51 Núm. 1: Enero 1, 2012; 17-37

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169

310.#.#.a: Trimestral

300.#.#.a: Páginas: 17-37

264.#.1.b: Instituto de Geofísica, UNAM

doi: https://doi.org/10.22201/igeof.00167169p.2012.51.1.143

handle: 00db05770ef72d21

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2011-12-15 22:04:52.0

file_modification_date: 2022-07-04 19:26:25.0

file_creator: Fernando Cordo, Jorge Arzate, Alejandro Oleaga

file_name: a137f7eed46fb88490b02f2bd031c97b41245398443d62ea84db37a1ac6b6f78.pdf

file_pages_number: 21

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file_size: 4436241

245.1.0.b: Structure of the Guaraní aquifer in the surroundings of the Uruguay river from magnetotelluric soundings

last_modified: 2023-06-20 16:00:00

license_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es

license_type: by-nc-sa

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