Chromium Isotope Compositions of Shells and Surface Seawater - a First Look at the Potential of Cr in Marine Skeletal Carbonates as a Seawater Redox Archive

Robert Frei1,2, Sylvie Bruggmann2 and Cora Paulukat1,3, (1)University of Copenhagen, Geoscience and Natural Resource Management, København K, Denmark, (2)University of Copenhagen, Geosciences and Natural Resource Management, København K, Denmark, (3)ALS Scandinavia AB, Luleå, Sweden