000078808 001__ 78808
000078808 005__ 20221004075832.0
000078808 0247_ $$2doi$$a10.1029/2018TC005153
000078808 0248_ $$2sideral$$a108575
000078808 037__ $$aART-2018-108575
000078808 041__ $$aeng
000078808 100__ $$0(orcid)0000-0002-5159-8140$$aIzquierdo-Llavall, E.$$uUniversidad de Zaragoza
000078808 245__ $$aRotational Kinematics of Basement Antiformal Stacks: Paleomagnetic Study of the Western Nogueras Zone (Central Pyrenees)
000078808 260__ $$c2018
000078808 5060_ $$aAccess copy available to the general public$$fUnrestricted
000078808 5203_ $$aThe structure of the Pyrenean Axial Zone laterally transitions from an imbricate thrust system to an antiformal stack displaying downward facing structures in its frontal part (the Nogueras zone). We carried out a paleomagnetic study through this structural transition to better constrain thrust kinematics and better define the factors controlling the occurrence of antiformal stacks. Triassic red beds unconformably overlying the Paleozoic basement were sampled across three main thrust sheets (the Nogueras zone, the Bielsa, and the Orri thrust sheets). From 31 new sites, two meaningful magnetizations were defined, both carried by hematite: (1) the primary magnetization, that unblocks at 660–685 °C and (2) an intermediate-temperature, syn-orogenic remagnetization. Paleomagnetic data indicate variable, clockwise vertical axis rotations, with mean, thrust-scale values that range from 0 to +38°. They increase both from the base to the top of the stacked units and from west to east and display a thrust-scale directional dispersion that is higher for the lower wavelength thrusts. Results evidence that increasing thrust displacements in the upper thrusts units are a key factor for the formation of antiformal stacks showing downward facing structures. Displacement gradients in the basement are transferred to cover units and can account for important rotations such as those registered by the Mesozoic-Cenozoic units to the south of the study area.
000078808 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/CGL2009-10840$$9info:eu-repo/grantAgreement/ES/MICINN/CGL2009-08969$$9info:eu-repo/grantAgreement/ES/MICINN/CGL2006-05817$$9info:eu-repo/grantAgreement/ES/MEC/FPU-AP2009-0554$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2012-38481
000078808 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000078808 590__ $$a3.975$$b2018
000078808 591__ $$aGEOCHEMISTRY & GEOPHYSICS$$b14 / 84 = 0.167$$c2018$$dQ1$$eT1
000078808 592__ $$a2.371$$b2018
000078808 593__ $$aGeophysics$$c2018$$dQ1
000078808 593__ $$aGeochemistry and Petrology$$c2018$$dQ1
000078808 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000078808 700__ $$0(orcid)0000-0003-3652-3527$$aCasas-Sainz, A.M.$$uUniversidad de Zaragoza
000078808 700__ $$0(orcid)0000-0003-1563-6434$$aOliva-Urcia, B.
000078808 700__ $$aVillalaín, J.J.$$uUniversidad de Zaragoza
000078808 700__ $$0(orcid)0000-0002-0504-2352$$aPueyo, E.$$uUniversidad de Zaragoza
000078808 700__ $$aScholger, R.
000078808 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000078808 773__ $$g37, 10 (2018), 3456-3478$$pTectonics$$tTectonics$$x0278-7407
000078808 8564_ $$s5015866$$uhttps://zaguan.unizar.es/record/78808/files/texto_completo.pdf$$yVersión publicada
000078808 8564_ $$s2884037$$uhttps://zaguan.unizar.es/record/78808/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000078808 909CO $$ooai:zaguan.unizar.es:78808$$particulos$$pdriver
000078808 951__ $$a2022-10-03-13:16:58
000078808 980__ $$aARTICLE