000162470 001__ 162470
000162470 005__ 20251017144654.0
000162470 0247_ $$2doi$$a10.1016/j.earscirev.2025.105237
000162470 0248_ $$2sideral$$a145006
000162470 037__ $$aART-2025-145006
000162470 041__ $$aeng
000162470 100__ $$aMuñoz, Josep Anton
000162470 245__ $$aInheritance in shortening transfer and kinematics in fold-and-thrust belts: Revisiting the structure of the Jaca Basin, Southern Pyrenees
000162470 260__ $$c2025
000162470 5060_ $$aAccess copy available to the general public$$fUnrestricted
000162470 5203_ $$aThis study revisits the structural evolution of the Jaca Basin in the Southern Pyrenees through a revision of the works done in the study area combined with a detailed analysis of geological and subsurface data, culminating in a new balanced cross-section. Our findings demonstrate that the propagation of the deformation into the foreland, from the basement to the cover, is heavily influenced by the uneven distribution of the Upper Triassic salt layer, at the base of the deformed Mesozoic-Paleogene succession, and the reactivation of Permian and Triassic extensional faults. This has led to a distinctive non-cylindrical fold-and-thrust belt with frictional and viscous domains displaying different structural styles. In the frictional domains, where Triassic salt is absent, high-angle thrust systems with a short wavelength involve both the basement and overlying strata, resulting in tight folds and related cleavage. In contrast, in the viscous domains where salt is preserved, deformation structures involving the cover succession are decoupled from the basement and propagate further into the foreland. Nevertheless, structures of both domains, independently of their location and geometry, tended to connect and link, resulting into an intricate thrust system with the development of numerous oblique structures. These oblique structures are further accentuated by the reactivation of inherited Permian and Triassic extensional faults, primarily involving basement thrusts. Differences in the topography between the frictional and viscous domains have also influenced the deposition and routing of syntectonic sediments, which in their turn have also determined the thrusting sequence. The evolutionary sequence of thrusting initiated in the late Ypresian and continued into the early Neogene. Contrary to previous models that suggested simply piggy-back propagation, our findings indicate a complex pattern of synchronous and break-back thrusting sequences with continuous forward propagation of the deformation. Detailed field work supports thrusting ages older than previously thought and indicates a greater amount of shortening (approximately 58 km) than earlier estimates. This comprehensive integration of surface and subsurface data challenges traditional interpretations and provides new insights into the structural evolution of the Southern Pyrenees. Our study highlights the importance of considering three-dimensional structural interactions in understanding tectono-sedimentary relationships. These insights into the complex structural geometry of the Jaca Basin enhance our understanding of similar salt-bearing fold-and-thrust belts globally, such as Zagros, Western Alps, Calcareous Alps, among many others, emphasizing the critical role of inherited geological features and uneven salt distribution in shaping orogenic systems.
000162470 536__ $$9info:eu-repo/grantAgreement/ES/AEI/PID2020-117598GB-I00$$9info:eu-repo/grantAgreement/ES/MICINN/PID2019-104693GB-I00
000162470 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttps://creativecommons.org/licenses/by-nc/4.0/deed.es
000162470 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000162470 700__ $$0(orcid)0000-0002-5159-8140$$aIzquierdo-Llavall, Esther
000162470 700__ $$aSantolaria, Pablo
000162470 700__ $$aToro, Rosibeth
000162470 700__ $$0(orcid)0000-0002-0504-2352$$aPueyo, Emilio L.
000162470 700__ $$0(orcid)0000-0003-3652-3527$$aCasas, Antonio M.$$uUniversidad de Zaragoza
000162470 700__ $$aGranado, Pablo
000162470 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000162470 773__ $$g270 (2025), 105237 [37 pp.]$$pEarth-sci. rev.$$tEarth-Science Reviews$$x0012-8252
000162470 8564_ $$s13087333$$uhttps://zaguan.unizar.es/record/162470/files/texto_completo.pdf$$yVersión publicada
000162470 8564_ $$s2270503$$uhttps://zaguan.unizar.es/record/162470/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000162470 909CO $$ooai:zaguan.unizar.es:162470$$particulos$$pdriver
000162470 951__ $$a2025-10-17-14:37:38
000162470 980__ $$aARTICLE