000147245 001__ 147245
000147245 005__ 20250923084432.0
000147245 0247_ $$2doi$$a10.1344/GeologicaActa2024.22.10
000147245 0248_ $$2sideral$$a141070
000147245 037__ $$aART-2024-141070
000147245 041__ $$aeng
000147245 100__ $$aIllueca, Natalia$$uUniversidad de Zaragoza
000147245 245__ $$aLinking high-frequency lacustrine sequences to orbitally-induced cyclicity (Lower Cretaceous, Iberian Basin)
000147245 260__ $$c2024
000147245 5060_ $$aAccess copy available to the general public$$fUnrestricted
000147245 5203_ $$aThe lacustrine El Castellar Formation in the Castillo de Aliaga section (Early Cretaceous Galve sub-basin, eastern Spain) features two carbonate successions of marl and limestone, separated by a mudstone and marl interval. Sequence analysis revealed small-scale (44 elementary sequences), medium-scale (ten complete and two incomplete parasequences), and large-scale (three sets of parasequences, one incomplete), high-frequency lacustrine sequences, with an average thickness of 2.9, 12.4 and 54m, respectively. These sequences start with a sudden facies change (deepening) and exhibit a shallowing-upward trend with features of subaerial exposure (bioturbation, oxidation, or brecciation) at the top, indicating phases of climate-modulated lake expansion and retraction. The temporal framework of the lacustrine sequences is further characterized by the correlation of these sequences with sedimentary-cycle periodicities of 3.3, 13.2 and 57.3m, attributed, respectively, to the long precession cycle (22.4kyr) and the short (95kyr) and long (405kyr) eccentricity cycles of the Earth’s orbit. The hierarchical stacking of sequences aligns with orbitally driven cyclicity, with thickness variations interpreted as tectonic subsidence effects (accommodation) resulting from normal fault slip in a rift system. The three sets of parasequences (SPS-1 to SPS-3) align with stages of lake system evolution. SPS-1 represents deposition in a lowenergy shallow carbonate lake. SPS-2 indicates a significant lake expansion and deepening, linked with clastic input and a mixed lake system, and correlates with a major increase in accommodation, over ~200kyr, involving fault-induced local tilting. SPS-3 represents deposition in a high-energy carbonate lake. The parasequences identified show variations in cyclic thickness tied to a >700kyr tectonic cycle. The elementary sequences, mainly corresponding to marl-limestone bundles, exhibit thickness changes probably due to shorter-term tectonic pulses. Accelerated tectonic activity resulted in increased accommodation in shorter (40-50kyr) periods, followed by longer (>100kyr) periods of progressive deceleration.
000147245 536__ $$9info:eu-repo/grantAgreement/ES/AEI/PID2019-108705GB-I00$$9info:eu-repo/grantAgreement/ES/DGA/E32-23R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2023-148949NB-I00
000147245 540__ $$9info:eu-repo/semantics/openAccess$$aby-sa$$uhttp://creativecommons.org/licenses/by-sa/3.0/es/
000147245 590__ $$a2.0$$b2024
000147245 592__ $$a0.418$$b2024
000147245 591__ $$aGEOLOGY$$b10 / 61 = 0.164$$c2024$$dQ1$$eT1
000147245 593__ $$aGeology$$c2024$$dQ2
000147245 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000147245 700__ $$0(orcid)0000-0002-9130-117X$$aLiesa, Carlos L.$$uUniversidad de Zaragoza
000147245 700__ $$0(orcid)0000-0003-2963-8422$$aSoria de Miguel, Ana R.$$uUniversidad de Zaragoza
000147245 7102_ $$12000$$2280$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Estratigrafía
000147245 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000147245 773__ $$g22, 10 (2024), 26$$pGeol. acta$$tGeologica Acta$$x1695-6133
000147245 8564_ $$s6011082$$uhttps://zaguan.unizar.es/record/147245/files/texto_completo.pdf$$yVersión publicada
000147245 8564_ $$s1869860$$uhttps://zaguan.unizar.es/record/147245/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000147245 909CO $$ooai:zaguan.unizar.es:147245$$particulos$$pdriver
000147245 951__ $$a2025-09-22-14:44:22
000147245 980__ $$aARTICLE