000118786 001__ 118786
000118786 005__ 20221006120648.0
000118786 0247_ $$2doi$$a10.1016/j.jsg.2014.11.004
000118786 0248_ $$2sideral$$a89290
000118786 037__ $$aART-2015-89290
000118786 041__ $$aeng
000118786 100__ $$aMoussaid, B.
000118786 245__ $$aPrimary vs. secondary curved fold axes: Deciphering the origin of the Aït Attab syncline (Moroccan High Atlas) using paleomagnetic data
000118786 260__ $$c2015
000118786 5060_ $$aAccess copy available to the general public$$fUnrestricted
000118786 5203_ $$aThe Aït Attab syncline, located in the Central High Atlas, displays a curved geometry in plan view, and is considered as one of the most spectacular fold shapes in the Central High Atlasic belt. We conducted a paleomagnetic study in Jurassic-Cretaceous red beds to investigate the origin of this geometry. The Natural Remanent Magnetization (NRM) is dominated by a secondary magnetization carried by haematite with unvarying normal polarity that has been dated at about 100 Ma. The regional fold test performed in both limbs of the syncline is positive and the paleomagnetic vectors (after tectonic correction) are parallel throughout the curvature, indicating a negative oroclinal bending test. These results are inconsistent with previous works that consider the bent geometry of this syncline to result from subsequent distortion of originally NE–SW trending structures by rotation about a vertical axis. We interpret the NRM data to demonstrate that the changing trend of the Aït Attab syncline is a primary feature, resulting from the influence of pre-existing, NE–SW and E-W-striking extensional faults that developed during a strike-slip regime. Paleomagnetic results also reveal that the tilting observed in the sampled red beds is post Albian, probably linked to the Cenozoic inversion of the High Atlasic belt.
000118786 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/CGL2009-08969$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2009-10840$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2012-38481
000118786 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000118786 590__ $$a2.084$$b2015
000118786 591__ $$aGEOSCIENCES, MULTIDISCIPLINARY$$b66 / 184 = 0.359$$c2015$$dQ2$$eT2
000118786 592__ $$a1.744$$b2015
000118786 593__ $$aGeology$$c2015$$dQ1
000118786 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000118786 700__ $$aVillalaín, J.J.
000118786 700__ $$0(orcid)0000-0003-3652-3527$$aCasas-Sainz, A.$$uUniversidad de Zaragoza
000118786 700__ $$aEl Ouardi, H.
000118786 700__ $$aOliva-Urcia, B.
000118786 700__ $$0(orcid)0000-0002-1929-8850$$aSoto, R.
000118786 700__ $$0(orcid)0000-0002-9743-8695$$aRomán-Berdiel, T.$$uUniversidad de Zaragoza
000118786 700__ $$aTorres-López, S.
000118786 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000118786 773__ $$g70 (2015), 65-77$$pJ. struct. geol.$$tJournal of Structural Geology$$x0191-8141
000118786 8564_ $$s8816142$$uhttps://zaguan.unizar.es/record/118786/files/texto_completo.pdf$$yPostprint
000118786 8564_ $$s1090297$$uhttps://zaguan.unizar.es/record/118786/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000118786 909CO $$ooai:zaguan.unizar.es:118786$$particulos$$pdriver
000118786 951__ $$a2022-10-06-10:02:51
000118786 980__ $$aARTICLE