Provenance of the Moine Supergroup of NW Scotland: Evidence from geochronology of detrial and inherited zircons from (meta)sedimentary rocks, granites and migmatites

Journal of the Geological Society | March 1, 2003| | Copyright

Abstract: Detrital and inherited zircons from rocks of the Moine Supergroup from structural and stratigraphic positions above and below the Sgurr Beag and Naver thrusts have been dated by ion microprobe. ^sup 207^Pb/^sup 206^Pb ages for 65 detrital zircons from the Moine Nappe (Morar Group) range between 2707 and 947 Ma, with a bimodal distribution with clusters at c. 1650 and 1400 Ma. Five grains (8% of the analyses) were Archaean. Analyses of 97 inherited zircons from two Caledonian migmatites and two granites from the Naver Nappe yield ^sup 207^Pb/^sup 206^Pb ages between c. 2940 and 926 ...

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