Magnetic and structural study of the Eaux-Chaudes intrusion: understanding the Variscan deformation in the Western Axial Zone (Pyrenees)

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dc.contributor.author Izquierdo Llavall, Esther
dc.contributor.author Román Berdiel, Teresa
dc.contributor.author Casas-Sainz, Antonio M.
dc.contributor.author Oliva-Urcia, Belén
dc.contributor.author Gil Peña, Inmaculada
dc.contributor.author Soto Marín, Ruth Lourdes
dc.contributor.author Jabaloy, Antonio
dc.date.accessioned 2020-10-01T12:00:53Z
dc.date.available 2020-10-01T12:00:53Z
dc.date.issued 2012-02-25
dc.identifier.citation International Journal of Earth Sciences, vol.101, n.7, 1817–1834 es_ES
dc.identifier.issn 1437-3262
dc.identifier.uri http://hdl.handle.net/20.500.12468/466
dc.description.abstract The present study provides new magnetic and microstructural data for the Eaux-Chaudes granodioritic massif (Western Axial Zone, Pyrenees) and contributes to the understanding of its geometry, internal structure and emplacement mechanism. Moreover, the geological crosssections and field data allow to reconstruct the evolution of the whole area from Variscan to Alpine times and to integrate the emplacement of the igneous body in the context of the Variscan orogeny. The Eaux-Chaudes pluton (301 ± 9 Ma) is mainly composed by granodiorite, describing a normal compositional zoning and an approximately concentric arrangement that is consistent with the zonation of the low-field magnetic susceptibility. Magnetic foliation is subhorizontal in the inner part of the intrusion and becomes parallel to the petrographical contacts along pluton margins, roughly describing the geometry of the intrusion. Magnetic lineations are dominantly subhorizontal, with E–W to ENE–WSW directional maximum. The general parallelism between Variscan structures of the host rock and the geometry and magmatic fabric of the intrusion reveals a late syn-Variscan emplacement. The tectonic regime registered during magma emplacement is in agreement with an N–S shortening and an E–W stretching direction, consistent with the transpressive regime deduced for other Pyrenean intrusions. Alpine overprint produced a slight tilting in the southern part of the intrusion, but it can be considered that the original Variscan structure is basically unchanged es_ES
dc.description.sponsorship Departamento de Ciencias de la Tierra, Universidad de Zaragoza, España es_ES
dc.description.sponsorship Instituto Geológico y Minero de España, España es_ES
dc.description.sponsorship Unidad de Zaragoza, Instituto Geológico y Minero de España, España es_ES
dc.description.sponsorship Departamento de Geodinámica, Universidad de Granada, España es_ES
dc.language.iso en es_ES
dc.publisher Springer es_ES
dc.relation CGL2009-08969 es_ES
dc.relation CGL2006-05817 es_ES
dc.rights Acceso abierto es_ES
dc.subject magnetic fabric es_ES
dc.subject Pirineos Franceses es_ES
dc.subject Macizo Eaux-Chaudes es_ES
dc.subject Orogenia Varisca es_ES
dc.subject Alpine es_ES
dc.subject foliation es_ES
dc.subject cross-section es_ES
dc.subject Francia es_ES
dc.title Magnetic and structural study of the Eaux-Chaudes intrusion: understanding the Variscan deformation in the Western Axial Zone (Pyrenees) es_ES
dc.type Postprint es_ES
dc.relation.publisherversion https://link.springer.com/article/10.1007%2Fs00531-012-0760-9 es_ES
dc.description.funder Ministerio de Educación, España es_ES
dc.identifier.doi https://doi.org/10.1007/s00531-012-0760-9 es_ES
dc.coverage.spatialStudy Macizo Eaux-Chaudes, Pirineos Franceses, Francia es_ES


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