Precambrian crustal evolution and Cretaceous–Palaeogene faulting in West Greenland: 207Pb-206Pb dating of magnetite, monazite and allanite in the central and northern Nagssugtoqidian orogen, West Greenland

• Main Authors: Frei, Robert, Stendal, Henrik, Secher, Karsten
• Format: Article in Journal/Newspaper
• Language: English
• Published: Geological Survey of Denmark and Greenland 2006
• Subjects: Pb isotopes; magnetite; Nagssugtoqidian orogen; Palaeoproterozoic; pegmatites; Pb stepwise leaching; supracrustal; Geology; QE1-996.5; Geophysics. Cosmic physics; QC801-809; Greenland; Naternaq; Nordre Strømfjord; Arfersiorfik; Nordre strømfjord; Geological Survey of Denmark and Greenland Bulletin
• Online Access: https://doaj.org/article/4773570b1ea24faba5e55bb778880819

Pb-isotopic data for magnetite from amphibolites in the Nagssugtoqidian orogen, central West Greenland, 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, a...