Climatic changes recorded during the Jenkyns Event (Early Jurassic) in the lacustrine sediments of the Sichuan Basin (China)
| Autor: | Matías Reolid, Chaima Ayadi, Xin Jin, Isabel Abad, Viktória Baranyi, Marco Franceschi, Nereo Preto, Zhiqiang Shi |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Geogaceta, Vol 76 (2024) |
| Druh dokumentu: | article |
| ISSN: | 0213-683X 2173-6545 84206934 |
| DOI: | 10.55407/geogaceta104478 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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