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I've recently moved to Oxford. You can find my updated contact information at http://www.earth.ox.ac.uk/department/Research.html
The current focus of my research is the development and application of non-traditional stable isotope systems in combination with element and element ratio proxies for (paleo-) oceanography. The main focus is on the application of these methods in marine sediments and fluids.
My general interests also include the application of isotope geochemistry to a variety of scientific problems, for example medical studies.
Education
2003 PhD at the University of Bern, Switzerland
1999 Diplom in Geology (equivalent MS) at the Georg-August-Universitaet, Goettingen, Germany
Positions
2005 - 2006 Research Associate (postdoc), School of Earth and Space Exploration, Arizona State University
2003 - 2005 Research Associate (postdoc), College of Oceanic and Atmospheric Sciences, Oregon State University; 2003 to 2004: Swiss National Science Foundation (SNF) grant number PBBE2-102997
Publications
R.L. Poulson, C.Siebert, J. McManus, W.M. Berelson (2006) Authigenic molybdenum isotope signatures in marine sediments. Geology. 34 (8), 617-620
C. Siebert, A. Ross, J. McManus (2006) Germanium isotope measurements of high-temperature geothermal fluids using double spike hydride generation MC-ICP-MS, Geochim.Cosmochim. Acta 70, 3986-3995
C. Siebert, J. McManus, A. Bice, R. Poulson, W. M. Berelson (2006) Molybdenum isotope signatures in continental margin marine sediments. Earth. Planet. Sci. Let. 241, 723-733
C. Siebert, J. D. Kramers, T. Meisel, P. Morel, T. F. Nagler (2005) PGE, Re-Os and Mo isotope systematics in Archean and early Proterozoic sedimentary systems as proxies for redox conditions of the early Earth. Geochim. Cosmochim. Acta 69 (7), 1787-1801.
T.F. Nagler, C. Siebert, H. Lueschen, M.E. Boettcher (2005) Sedimentary Mo isotope records across the Holocene fresh-brackisch water transition of the Black Sea. Chem. Geol. 219, 283-295
C. Siebert, T.F. Nagler, F. von Blanckenburg, J.D. Kramers (2003) Molybdenum isotope records as potential proxy for paleoceanography. Earth Planet. Sci. Letters. 211, 159-171
J. McManus, T.F. Nagler, C. Siebert, C.G. Wheat, D. Hammond (2002) Oceanic molybdenum isotope fractionation: Diagenesis and hydrothermal ridge flank alteration. Geochem. Geophys. Geosyst. 3 (12), 1078, doi:10.1029/2002GC000356
C. Siebert, T.F. Nagler, J.D. Kramers (2001) Determination of molybdenum isotope fractionation by double spike multicollector inductively coupled plasma mass spectrometry. Geochem. Geophys. Geosyst. 2, paper 2000GC000124
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