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Climatic changes recorded during the Jenkyns Event (Early Jurassic) in the lacustrine sediments of the Sichuan Basin (China)

Year: 2024
Type: article
Abstract: The Toarcian lacustrine deposits of the Sichuan Basin (China) are represented mainly by silty marlstones and bivalve rich limestones disposed in decametric-scale thickening upwards sequences. Dense accumulations of bivalve shells are related to episodes of mass mortality under oxygen depleted conditions in the bottom waters. The geochemical detrital proxies indicate a climatic turnover during the Toarcian. The lower part of the Toarcian succession is characterized by high values of Zr/Rb and Sr/Cu that point to warm and arid conditions, whereas the upper part is characterized by low values of Zr/Rb and Sr/Cu and enhanced C-value related to relatively more humid conditions.
Source: Geogaceta
DOI: 10.55407/geogaceta104478
Authors: Matías Reolid, Chaima Ayadi, Xin Jin, Isabel Abad, Viktória Baranyi, Marco Franceschi, Nereo Preto, Zhiqiang Shi
Institutions: Universidad de Jaén, Chengdu University of Technology, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Croatian Geological Survey, University of Trieste, University of Padua
Language: English
Subfield: Paleontology
Open Access status: diamond
OpenAlex ID: W4404694077
FWCI: 0.329
Cites:
Cited by: 1
Related to: 10