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    In:  (Master thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 59 pp
    Publication Date: 2016-04-20
    Description: A first ferromanganese crust record of neodymium, hafnium and lead isotopes, reflecting the deep water evolution of the Arctic Ocean was compiled during this work. The archives were dated using beryllium isotopes and reach back to the late Miocene. The isotopic signatures of three crusts from the flanks of sea mounts at the northernmost edge of the Northwind Ridge in the Canada Basin reflect changes in continental weathering influxes and contributions of inflowing deep water from the North Atlantic on a million year scale. The data show that stable conditions prevailed until about 4 Ma before today. After that, climatically controlled changes in weathering regime and sediment transport on the North American continent have driven the Arctic Deep Water chemistry in the deep Canada Basin until today. From our records we conclude that the first influences of strong glacial-like weathering conditions on the North American continent reached the Arctic Deep Water as early as 4 Ma and have prevailed there ever since.
    Keywords: Course of study: MSc Marine Geosciences
    Type: Thesis , NonPeerReviewed
    Format: text
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