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dc.contributor.authorHungerford, N.
dc.contributor.authorPieters, P.E.
dc.coverage.spatialChepes .......... (inhabited place) (World, South America, Argentina, La Rioja)es_AR
dc.identifier.citationN. Hungerford, P. E. Pieters, 1996. Interpretación Geofísica (Magnética) Sierras de Chepes y de las Minas. Serie Contribuciones Técnicas;Geofísica nro.4. 22 p. Buenos Aires, Secretaría de Minería de la Nación. Servicio Geológico Minero Argentinoes_AR
dc.descriptionFil: Hungerford, N. Australian Geological Survey Organisation; Australia.es_AR
dc.descriptionFil: Pieters, P.E. Australian Geological Survey Organisation; Australia.es_AR
dc.descriptionVersión en inglés. Reedición 2012.es_AR
dc.description.abstractThis report and accompanying 1:250.000 scale magnetic interpretation map covering the Sierra de Chepes, Sierra de Las Minas and the southernmost part of the Sierra Los Llanos is a product of the Geoscientific Mapping of the Sierras Pampeanas cooperative project between the Australian Geological Survey Organisation (AGSO) and the Dirección Nacional del Servicio Geológico (DNSG) of the Subsecretaría de Minería, República de Argentina. This report and map provide details on one of the three separate high-resolution, airborne geophysical survey carried out for the project, covering an area of about 9000 km2 in the southern part of La Rioja Province. The other two surveys were carried out over the northern Sierras de Córdoba (Córdoba Province) and Sierras de San Luis – Comechingones (San Luis and Córdoba Provinces), and the results are reported elsewhere (Hungerford & others, 1996 a & b). For the airborne geophysical survey, magnetic and radiometric (U, K, Th) data were obtained by World Geoscience along flight lines spaced 500m apart, from a nominal height of 100m. To assist the aeromagnetic interpretation, magnetic susceptibilities were measured during field work of exposed rock types. The magnetic data from the airborne survey were processed by Hungerford Geophysical Consultants (HGC) and radiometric data were processed by AGSO. The data were interpreted by HGC and geoscientists from AGSO at 1:1.000.000 scale and a number of geophysical domains have been identified. In conjunction, some individual aeromagnetic anomalies were modelled in order to obtain a dip and an estimation of the depth to source. The interpretation of the aeromagnetic data indicates a regional geological discontinuity between the granitoids and metasediments of Sierra de Chepes and Los Llanos in the north and the granitoids of Sierra de Las Minas in the south. The rocks in the north are generally more magnetic, and in the south there is evidence for a large domain associates with granitoids which either is remanently magnetised or is underline by a very low magnetic granitoids or metasediments.es_AR
dc.publisherSecretaría de Minería de la Nación. Servicio Geológico Minero Argentinoes_AR
dc.relation.ispartofseriesSerie Contribuciones Técnicas;Geofísica nro.4
dc.subjectgeofísica aéreaes_AR
dc.subjectSierra de Chepes (La Rioja, Argentina)es_AR
dc.subjectChepes (La Rioja, Argentina)es_AR
dc.subjectLa Rioja (Argentina)es_AR
dc.subjectSierra de las Minas (La Rioja, Argentina)es_AR
dc.subjectmodelado de campo magnéticoes_AR
dc.subjectprocesamiento de imagenes_AR
dc.subjectcampo magnéticoes_AR
dc.subject550.8 (825.3) (047)es_AR
dc.titleInterpretación Geofísica (Magnética) Sierras de Chepes y de las Minases_AR
dc.title.alternativeMapeo Geocientífico de las Sierras Pampeanas Proyecto Cooperativo Argentino-Australianoes_AR
dc.typeinfo:ar-repo/semantics/informe técnicoes_AR

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  • Serie Contribuciones Técnicas [53]
    El SEGEMAR posee diferentes series de Contribuciones Técnicas, para sus distintas áreas. En esta se encuentran los trabajos de esta serie, para el área de Geofísica Área.

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