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PhD position in paleoclimatology at Department of Earth Sciences, ETH Zürich
As our new PhD student you will be part of our paleoclimatology and paleoceanography group at ETH. We will investigate how climate, tectonics and oceanography were linked during the mid-Cretaceous, a time of repeated perturbations of the global carbon cycle and of major reorganization of global ocean circulation. Cretaceous climate change was mainly driven by changes in orbital parameters, by variations in atmospheric CO2 related to volcanism and by the opening and closing of oceanic gateways.
In our new SNF-funded study we will test climate simulations, which predict a major change in climate and in ocean circulation upon the opening of the Equatorial Atlantic Gateway (EAG) during the Albian-Cenomanian. We will trace these changes with sedimentological, isotope geochemical and palynological methods and using marine sections on land and ODP material as archives. Marginal marine successions in Portugal will provide sedimentological and palynological information on evolving climate along the north Atlantic during the time slice of interest. These successions also record the evolution, timing and spatial differentiation of angiosperm-dominated ecosystems. The fundamental change from gymnosperm dominated to an angiosperm dominated vegetation occurred between Late Albian and early Cenomanian. We will investigate if these evolutionary trends can be related to changes in Albian-Cenomanian climate pattern.
As a PhD candidate for this position you should have a M.Sc. or a diploma in Earth Sciences. You will be ready to start the PhD in summer 2007. Please send your application letter together with your curriculum vitae to the Project leader
helmut.weissert@erdw.ethz.ch.

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