@misc{10498/35278,
year = {2024},
url = {http://hdl.handle.net/10498/35278},
abstract = {We investigate a new event of accelerated environmental change that was recorded during the late Barremian in the pelagic Subbetic Basin (Western Tethys). Two pelagic sections have been studied using a multi-proxy approach based on C-isotope stratigraphy and a high-resolution quantitative study of nannofossil assemblages, along with major and trace elements and biomarkers. Our results provide a detailed biostratigraphy and C-isotope stratigraphy, and outline the paleoenvironmental
conditions recorded during the early stages of the Taxy Episode. A disturbance has been
identified in the C-isotope record, called the IFeNE (Intra-Feradianus negative C-excursion), which is coeval with environmental and biotic changes that predate the well-known ISNE (Intra-Sarasini negative C-excursion). The combined analysis of nannofossil associations, C-isotopes, major and trace elements, and biomarker distributions indicates a separate episode of warming heralding the ISNE, resulting in the acceleration of the hydrological cycle and a consequent increase in continental
inputs and the fertilization of surface waters. The origin of the Taxy Episode (the IFeNE and ISNE) has been related to orbital factors (high-eccentricity cycles), and to a global increase in volcanism, probably related to the early phases of the Ontong Java Plateau.},
publisher = {MDPI},
keywords = {paleoenvironments},
keywords = {early cretaceous},
keywords = {calcareous nannofossils},
keywords = {C-isotopes},
keywords = {elements},
keywords = {biomarkers},
keywords = {Taxy EEC},
title = {New Evidence for an Episode of Accelerated Environmental Change in the Late Barremian: Geochemical and Paleontological Records from the Subbetic Basin (Western Tethys)},
doi = {10.3390/geosciences14070187},
author = {de Gea, Ginés A. and Castro, José Manuel and Company, Miguel and O'Dogherty Luy, Luis Carlos and Sandoval, José and Quijano, María Luisa and Sequero, Cristina and Froehner, Sandro and Aguado, Roque},
}