2006: 207Pb-206Pb dating of magnetite, monazite and allanite in the central and northern Nagssugtoqidian orogen

• Main Authors: Henrik Stendal, Karsten Secher, Robert Frei
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Pb isotopes; magnetite; Nagssugtoqidian orogen; Palaeoproterozoic; pegmatites; Pb stepwise leaching; supra- crustal rocks; Naternaq; Nordre Strømfjord; Arfersiorfik; Nordre strømfjord
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.573.7967; http://www.geus.dk/publications/bull/nr11/nr11_p101-114.pdf

Pb-isotopic data for magnetite from amphibolites in the Nagssugtoqidian orogen, central West Green-land, have been used to trace their source characteristics and the timing of metamorphism. Analyses of the magnetite define a Pb-Pb isochron age of 1726 ± 7 Ma. The magnetite is metamorphic in origin,...