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Magnetic fabrics of the Pyrenean foreland, relation to the last deformational stages (San Felices thrust sheet, External Sierras)

Other TitlesFábricas magnéticas en el antepaís del orógeno Pirenaico, relación con los últimos estadios de deformación (cabalgamiento de San Felices, Sierras Exteriores Aragonesas)
AuthorsOliva-Urcia, Belén ; Beamud, Elisabet ; Soto, Ruth ; Pueyo, E. L.; Garcés, Miguel; Valero Montesa, Luis
KeywordsMagnetic fabric
South Pyrenean Front
Issue DateJun-2017
PublisherSociedad Geológica de España
CitationGeogaceta, 61: 83-86 (2017)
AbstractThe continental deposits of the northern border of the foreland Ebro basin of Campodarbe and Uncastillo Formations have been analyzed by means of the magnetic fabric. Two sectors separated 12 km were sampled near Luesia and Fuencalderas. Results suggest that magnetic fabric developed at a time near the deposition of the sediments in the foreland basin since the magnetic lineation (maximum axis of the magnetic ellipsoid) is perpendicular to the compression direction (following the bedding strike) and the minimum axis is perpendicular to the bedding plane (or forming an incipient girdle with the intermediate magnetic axis). In the eastern sector (Fuencalderas) a deviation of the magnetic fabric respect to the bedding strike is observed, which could be related to the termination of the San Felices thrust sheet. Copyright© 2017 Sociedad Geológica de España
Publisher version (URL)http://www.sociedadgeologica.es/archivos/geogacetas/geo61/geo61_21p83_86.pdf
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