The geochemical cycling and paleoceanographic application of combined oceanic Nd-Hf isotopes
Combined oceanic hafnium (Hf) and neodymium (Nd) isotope compositions are a geochemical tool developed over the past 15 years to study the present and past ocean circulation and continental weathering regimes. Since it is a relatively new proxy in marine research, a number of issues regarding the geochemistry of oceanic Hf have previously not been investigated or are still controversial. This thesis presents Hf and Nd concentration/isotope data from a variety of archives, such as marine sediments, dust deposits, as well as seawater and river water in order to better understand the sources and cycling of oceanic Nd and Hf isotopes and to apply them in paleoceanographic studies.
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