Geochemical Compositions of Marine Fossils as Proxies for Reconstructing Ancient Environmental Conditions


  • László Kocsis Research Fellow, Ambizione SNF, Université de Lausanne, Faculté des géosciences et de l'environnement, Institut de Minéralogie et Géochimie, UNIL – Dorigny – Anthropole, CH-1015 Lausanne, Switzerland



Fossils, Palaeo-environment, Phosphate, Rare earth elements, Stable isotopes


A brief summary is given here about some of the geochemical methodologies that are often used to obtain information from fossils and sediments about the past environment. Such methods are frequently applied in our project in which the formation of Paleogene phosphate sequences in North Africa is investigated. These layers were deposited in shallow marine seas during a period of extreme warm climate with a high CO2 concentration in the atmosphere. Some of the characteristics of this greenhouse interval are similar to the modern anthropogenic situation hence it is intensively investigated from several aspects by many scientists. Here the geochemical compositions of fossils deposited during this time are discussed, focusing on how the data are obtained and how they could be evaluated in terms of palaeo-environmental conditions.




How to Cite

L. Kocsis, Chimia 2011, 65, 787, DOI: 10.2533/chimia.2011.787.