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Die Vulkanite im westlichen und mittleren Neuschwabenland, Vestfjella und Ahlmannryggen, Antarktika: Petrographie, Geochemie, Geochronologie, Paläomagnetismus, geotektonische Implikationen= Igneous rocks in western and central Neuschwabenland, Vestfjella and Ahlmann-ryggen, Antarctica: petrography, geochemistry, geochronology, paleomagnetism, geotectonic implications