2026-06-27T15:37:50Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1122732024-12-10T00:57:29Zcom_20.500.14352_14col_20.500.14352_15

Martínez Rodríguez, Rafael Castro, José M. Gea, Ginés A. de Nieto, Luis M. Ruiz Ortiz, P. A. Skelton, Peter W. 2024-12-09T18:49:59Z 2024-12-09T18:49:59Z 2025-03 Martínez-Rodríguez, Rafael, et al. «Early Aptian Development and OAE 1a-Linked Demise of a Carbonate Platform in the Western Tethys: Lower Cretaceous of Sierra Mariola (South Iberian Paleomargin, SE Spain)». Cretaceous Research, vol. 167, marzo de 2025, p. 106032, https://doi.org/10.1016/j.cretres.2024.106032. 0195-6671 10.1016/j.cretres.2024.106032 https://hdl.handle.net/20.500.14352/112273 1095-998X https://doi.org/10.1016/j.cretres.2024.106032 https://www.sciencedirect.com/science/article/pii/S0195667124002052 A carbonate platform succession of early Aptian age is described from the Sierra Mariola, which is located within the Prebetic Zone of the Betic External Zones (BEZ) of the Southern Iberian Palaeomargin, in SE Spain. The facies and stratigraphic architecture of the studied succession are described and analysed from multiple logged sections to characterize different depositional environments. The cyclic stacking of facies observed suggests a possible orbital forcing of climate transmitted to sedimentation. Superbundles are recognized describing two sequences of Regressive-Transgressive (R-T) evolution. Analysis of carbon-isotope data identifies both the interval before the hyperthermal event of the early Aptian Oceanic Anoxic Event (OAE 1a) and the onset of the latter event, with an abrupt change in sedimentation marking the demise of the carbonate platform. The field outcrop thus preserves a record of the transition from a greenhouse world to a hothouse event. eng http://creativecommons.org/licenses/by/4.0/ open access Attribution 4.0 International Early Aptian development and OAE 1a-linked demise of a carbonate platform in the western Tethys: Lower Cretaceous of Sierra Mariola (South Iberian Paleomargin, SE Spain) journal article