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Showing 1 to 2 of 2 for “"Karbonatit"”.
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Auswirkungen der hydrothermalen Alteration und der Metamiktisierung auf die U-Th-Pb-Verteilung und die U-Pb-Isotopensystematik in Pyrochlor des Sokli Karbonatit-Komplex, N-Finnland
Pyrochlore is a common accessory mineral in granite pegmatites, nepheline syenites and carbonatites. Its ability to accomodate many different elements leads to a wide range of pyrochlore varieties. This is obvious for the U- and Th- contents. The Sokli carbonatite complex ist part of the Kola …
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Petrogenesis of the Mesoproterozoic anorthosite, syenite and carbonatite suites of NW Namibia and their contribution to the metasomatic formation of the Swartbooisdrif sodalite deposits
During the Mesoproterozoic large volumes of magma were repeatedly emplaced within the basement of NW Namibia. Magmatic activity started with the intrusion of the anorthositic rocks of the Kunene Intrusive Complex (KIC) at 1,385-1,347 Ma. At its south-eastern margin the KIC was invaded by syenite …