000144763 001__ 144763
000144763 005__ 20240906111328.0
000144763 0247_ $$2doi$$a10.1016/j.jsg.2024.105234
000144763 0248_ $$2sideral$$a139533
000144763 037__ $$aART-2024-139533
000144763 041__ $$aeng
000144763 100__ $$aPeiro, Alba
000144763 245__ $$aStructural inheritance, morphotectonics and Holocene activity of the Cucalón-Pancrudo extensional fault (Iberian Chain, Spain)
000144763 260__ $$c2024
000144763 5060_ $$aAccess copy available to the general public$$fUnrestricted
000144763 5203_ $$aA large active extensional fault is characterized, which will contribute to improve seismic hazard assessment in an intraplate region of the Mediterranean domain whose seismic potential until today has been underestimated. The Cucalón-Pancrudo fault (CPF) is a NNW-SSE striking extensional fault that represents the negative (extensional) inversion of a previous, Late Variscan and Paleogene, transpressional fault. It is part of the Río Grío-Pancrudo fault zone, the largest active structure in the intraplate central-eastern Iberian Chain. This study focuses on characterizing the CPF structure, morphotectonics and paleoseismology. The fault offsets a well-known regional planation surface (lower level of the Fundamental Erosion Surface, FES3, 3.5 Ma), providing a basis for calculating the maximum fault throw (c. 280–300 m, including the contribution of a minor synthetic fault and a gentle accommodation monocline), and hence estimating the net slip (c. 305–325 m) and the long-term slip rate (0.09 mm/a). A trench dug in a Holocene fluvial terrace reveals an ensemble of listric, domino-style ruptures synthetic to the main fault. They were activated during at least two paleoseismic events (X, Z), 14.9 ± 1.4 ka and 6.9 ± 0.4 ka in age. An intermediate event (Y), dated to 11.0 ± 1.0 ka, as an uncertainty because the attribution of their ruptures to event Z cannot be ruled out. The total net slip accumulated during these events (1.15–1.25 m) provides an apparent short-term slip rate of 0.07–0.09 mm/a, very similar to the long-term slip rate. Nevertheless, it is very likely that the faults exposed in the surveyed trench do not represent a complete paleoseismic record. Therefore, the actual slip rate during Late Pleistocene-Holocene times could be significantly higher, approaching that reported for most of the recent extensional faults in the central Iberian Chain. The inclusion of CPF in the map of Active Faults of Iberia (QAFI database) will result in improving seismic hazard assessment in Spain.
000144763 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E32-23R$$9info:eu-repo/grantAgreement/ES/DGA-FEDER/LMP127-18$$9info:eu-repo/grantAgreement/ES/MICINN/PID2019-108705GB-I00
000144763 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000144763 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000144763 700__ $$0(orcid)0000-0001-5091-9398$$aArlegui, Luis E.$$uUniversidad de Zaragoza
000144763 700__ $$0(orcid)0000-0002-9130-117X$$aLiesa, Carlos L.$$uUniversidad de Zaragoza
000144763 700__ $$aLuzón, Aránzazu
000144763 700__ $$aMedialdea, Alicia
000144763 700__ $$0(orcid)0000-0002-1460-1590$$aPueyo, Óscar$$uUniversidad de Zaragoza
000144763 700__ $$0(orcid)0000-0002-2842-517X$$aSoriano, Mª Asunción
000144763 700__ $$0(orcid)0000-0003-1412-5245$$aSimón, José L.$$uUniversidad de Zaragoza
000144763 7102_ $$14013$$2205$$aUniversidad de Zaragoza$$bDpto. Didácticas Específicas$$cÁrea Didáctica Ciencias Exper.
000144763 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000144763 773__ $$g187 (2024), 105234 [21 pp.]$$pJ. struct. geol.$$tJournal of Structural Geology$$x0191-8141
000144763 8564_ $$s5448167$$uhttps://zaguan.unizar.es/record/144763/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2026-10-31
000144763 8564_ $$s2021352$$uhttps://zaguan.unizar.es/record/144763/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2026-10-31
000144763 909CO $$ooai:zaguan.unizar.es:144763$$particulos$$pdriver
000144763 951__ $$a2024-09-06-10:25:36
000144763 980__ $$aARTICLE