Remagnetizations used to unravel large-scale fold kinematics: a case study in the Cameros Basin (Northern Spain)

Show simple item record García-Lasanta, C. Casas-Sainz, Antonio M. Villalaín, J. J. Oliva-Urcia, Belén Mochales López, Tania Speranza, F. 2020-09-18T08:35:37Z 2020-09-18T08:35:37Z 2017-04-27
dc.identifier.citation Tectonics, vol.36, n.4, 714-729 es_ES
dc.identifier.issn 1944-9194
dc.description.abstract The occurrence of a generalized remagnetization at 100 Ma makes the Cameros Basin, an 8 km thick Cretaceous extensional trough inverted during the Cenozoic, a perfect natural frame to apply paleomagnetic vectors to geometrical reconstructions. The widespread remagnetization that occurred between the extensional and compressional episodes, linked to low‐grade metamorphism, provides a tool to reconstruct the attitude of beds at the remagnetization time, thus giving a picture of basin geometry during the Cretaceous. This snapshot is compared with the present‐day geometry to constrain the large‐scale kinematic evolution of folds between these two stages. According to this methodology, a syncline, preinversion geometry of the sedimentary basin was determined and the position of its main axial surface was accurately located. Comparing with the present‐day, postinversion geometry, a northward hinge migration of around 5 km is inferred. This migration is the result of the southward back thrusting in the southern basin border, favored by the detachment level at the base of the Mesozoic cover. Conversely, the main northward directed thrust, which involved both the Paleozoic basement and the Mesozoic cover, did not significantly affect the internal structure of the basin in spite of its overall displacement of more than 20 km. es_ES
dc.description.sponsorship Departamento de Ciencias de la Tierra, Universidad de Zaragoza, España es_ES
dc.description.sponsorship Geotransfer, Universidad de Zaragoza, España es_ES
dc.description.sponsorship Departamento de Física, Universidad de Burgos, España es_ES
dc.description.sponsorship Departamento de Geología y Geoquímica, Universidad Autónoma de Madrid, España es_ES
dc.description.sponsorship Instituto Geológico y Minero de España, España es_ES
dc.description.sponsorship Istituto Nazionale di Geofisica e Vulcanologia, Italia es_ES
dc.language.iso en es_ES
dc.publisher Wiley es_ES
dc.relation CGL2009-08969 es_ES
dc.relation CGL2012-38481 es_ES
dc.relation CGL2013- 42670-P es_ES
dc.relation CGL2016-77560 es_ES
dc.rights Acceso abierto es_ES
dc.subject remagnetization es_ES
dc.subject basin inversion es_ES
dc.subject Cameros Basin es_ES
dc.subject unfolding es_ES
dc.subject hinge migration es_ES
dc.subject small circles intersection es_ES
dc.title Remagnetizations used to unravel large-scale fold kinematics: a case study in the Cameros Basin (Northern Spain) es_ES
dc.type Postprint es_ES
dc.relation.publisherversion es_ES
dc.description.funder Ministerio de Ciencia e Innovación, España es_ES
dc.description.funder Ministerio de Economía y Competitividad, España es_ES
dc.description.funder Fondo Europeo de Desarrollo Regional, Unión Europea es_ES
dc.identifier.doi es_ES
dc.coverage.spatialStudy Cuenca de Cameros es_ES

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