Tostevin Cerium Anomalies and Paleoredox

Erscheinungsjahr 2021
ISBN: 978-1-108-84862-6
Verlag: Cambridge University Press
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 0 Seiten

Reihe: Elements in Geochemical Tracers in Earth System Science

Ce anomalies track changes in oxygen availability due to the anomalous redox-sensitivity of Ce compared with the other rare earth elements. The proxy systematics have been calibrated experimentally as well as in modern anoxic water bodies. Ce anomalies are unique because they track intermediate manganous conditions, rather than fully anoxic conditions. In addition, they are sensitive to local–regional redox conditions, and can be analysed in chemical sediments such as carbonate rocks. This makes them especially useful as a tool to track local oxygen distribution in shallow shelf environments, where biodiversity is highest. This review focusses on the systematics of the Ce anomaly proxy, the preservation and extraction of the signal in sedimentary rocks, and the potential applications of the proxy.

Autoren/Hrsg.

Tostevin, Rosalie

Fachgebiete

• Geowissenschaften Geologie Geochemie

Inhaltsverzeichnis

1. Introduction; 2. Underpinning of the Proxy; 3. Materials and Methods; 4. Case Studies; 5. Future Prospects; 6. Key Papers.