151290 20251017144611.0 doi 10.1344/GeologicaActa2025.23.1 sideral 143112 ART-2025-143112 eng García Penas, Álvaro Universidad de Zaragoza (orcid)0000-0002-2351-8051 Latest Barremian - early Aptian chronostratigraphy and sedimentary evolution of the northwestern Maestrat Basin 2025 Access copy available to the general public Unrestricted Some aspects on the age and correlation of the upper Barremian-lower Aptian stratigraphic units of the NW Maestrat Basin were uncertain prior to this study, due to the differing lithostratigraphy of the marginal Oliete subbasin compared to the more depocentral Galve and Morella subbasins. New magnetostratigraphic, ammonite and sedimentological data presented in this study refine the age and sequence stratigraphy of the upper Barremian-lower Aptian succession, enabling a direct and precise correlation across these subbasins. Three third-order TR sequences are identified. The lower boundary of Sequence 1 corresponds to a transgressive surface found on top of the continental red beds of the lower Morella Fm. These beds are equivalent in age to the continental succession of the upper Blesa Fm. (Oliete subbasin). The boundary between the M1 and M0r magnetozones (latest Barremian) is found above this surface, in the lower part of the Alacón Fm. Sequence 1 includes the lower part of the Alacón Fm., which passes basinwards to the upper Morella and Xert formations. Sequence 2 corresponds to the upper part of the Alacón Fm and basinwards to the Cap de Vinyet and Barra de Morella members of the Forcall Fm. The boundary between the M0r and C34n magnetozones (earliest Aptian) is found towards the lowermost part of Sequence 2. Sequence 3 includes the Josa Fm and its offshore equivalents, the Morella la Vella Mb. and the Villarroya de los Pinares Fm. Additionally, the overall facies distribution in successive depositional stages is reconstructed, describing the lateral transition from marginal protected to open marine areas. The improved chronostratigraphic framework presented here will enable more accurate correlations with other subbasins of the Maestrat Basin, and the reconstructed sedimentary evolution may be useful for the interpretation of other Lower Cretaceous successions of the Tethys. info:eu-repo/grantAgreement/ES/DGA-FEDER/E18 Aragosaurus-Recursos Geológicos y Paleoambientes info:eu-repo/grantAgreement/ES/MICINN/AEI/PID2020-113912GB-I00 info:eu-repo/grantAgreement/ES/MICINN/PID2019-108753GB-C21 info:eu-repo/grantAgreement/ES/MICINN/PID2021-122612OB-I00 info:eu-repo/grantAgreement/ES/MICIU-FSE/PRE2018-084468 info:eu-repo/semantics/openAccess by-sa https://creativecommons.org/licenses/by-sa/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Zamora, Samuel Moreno-Bedmar, Josep Anton Calvin, Pablo Aurell, Marcos Universidad de Zaragoza (orcid)0000-0002-2430-7424 2000 280 Universidad de Zaragoza Dpto. Ciencias de la Tierra Área Estratigrafía 23 (2025), [44 pp.] Geol. acta Geologica Acta 1695-6133 3581050 http://zaguan.unizar.es/record/151290/files/texto_completo.pdf Versión publicada 2604311 http://zaguan.unizar.es/record/151290/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:151290 articulos driver 2025-10-17-14:17:41 ARTICLE