Changes in organic matter composition during the Toarcian Oceanic Anoxic Event (T-OAE) in the Posidonia Shale Formation from Dormettingen (SW-Germany)
| Autor: | Annette Schmid-Röhl, Francesca Galasso, Stefano M. Bernasconi, Susanne Feist-Burkhardt, Elke Schneebeli-Hermann |
|---|---|
| Přispěvatelé: | University of Zurich, Galasso, Francesca |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010506 paleontology
Evolution Large igneous province Geochemistry 1904 Earth-Surface Processes 10125 Paleontological Institute and Museum 010502 geochemistry & geophysics Particulate Organic Matter (POM) Carbon Isotope Oceanography 01 natural sciences Sedimentary depositional environment Early Jurassic Anoxia Central European Basin Behavior and Systematics 1910 Oceanography Organic matter Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Earth-Surface Processes chemistry.chemical_classification δ13C Ecology Palaeontology Paleontology Earth Anoxic waters Posidonia Shale Palynofacies 1911 Paleontology 1105 Ecology Evolution Behavior and Systematics chemistry 560 Fossils & prehistoric life Surface Processes Isotopes of carbon Geology |
| Zdroj: | Palaeogeography, Palaeoclimatology, Palaeoecology, 569 |
| ISSN: | 0031-0182 1872-616X |
| DOI: | 10.5167/uzh-201273 |
| Popis: | During the Early Toarcian, deposition of organic carbon-rich-shales occurred throughout the epicontinental sea across Europe. Climate instability and high extinction rates in the marine realm were associated with profound environmental changes. The Toarcian Oceanic Anoxic Event (T-OAE) has been linked to the injection of greenhouse gases (e.g. oceanic methane) into the atmosphere triggered by the emplacement of the Karoo-Ferrar large igneous province (LIP) volcanism. The data presented are obtained from the Posidonia Shale Formation in Dormettingen (southwestern Germany), ~2 km from the well-known Dotternhausen section. Despite the intense palaeontological and geochemical research, studies on the particulate organic matter (POM) across the T-OAE are scarce. Here, we provide a detailed study of POM of the Dormettingen section as a tool to evaluate changes in the depositional environment. Integrated POM (i.e. amorphous organic matter, marine and terrestrial palynomorphs) and geochemical (i.e. carbon isotope δ13C) analyses reveal different episodes of palaeoecological upheavals during the studied time interval. In this study, we will integrate new palynofacies data and combine it with the existing sedimentological and palaeoecological data of Dotternhausen in order to interpret relative sea-level fluctuations and climatic changes at the local palaeogeographic setting. Palaeogeography, Palaeoclimatology, Palaeoecology, 569 ISSN:0031-0182 ISSN:1872-616X |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect