Paleomagnetism of the Kola Peninsula's dykes, NE Fennoscandia: the review
- 1Lomonosov Moscow State University, Moscow, Russia
- 2Schmidt Institute of Physics of the Earth RAS, Moscow, Russia
- 3Institute of Geology, Karelian Research Centre RAS, Petrozavodsk, Russia
- 4Institute of Geology of Ore Deposits Petrography Mineralogy and Geochemistry RAS, Moscow, Russia
In this work we present the overview of comprehensive research on paleomagnetism and rock magnetism of more than 120 Paleoproterozoic and Neoarchean dykes from the Kola Peninsula, NE Fennoscandia. We discuss our results in a context of Precambrian paleotectonic reconstructions of Fennoscandia and Murmansk craton in particular for the time intervals corresponding to the dyke magmatism. We also show our progress in dating of the remanent magnetization components using some approaches of isotope geochronology, such as U-Pb dating of baddeleyite and Ar/Ar dating of mica, feldspar and amphibole. In total, we have been able to calculate virtual geomagnetic poles for the selected dykes and to make some conclusions about paleotectonics of the Murmansk craton at the corresponding time. New paleointensity data for some 2.50 and 2.68 Ga dykes will be also presented and commented. The study is supported by the grant of RSF #16-17-10260.
How to cite: Veselovskiy, R., Stepanova, A., Samsonov, A., and Lebedev, I.: Paleomagnetism of the Kola Peninsula's dykes, NE Fennoscandia: the review, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-20186, https://doi.org/10.5194/egusphere-egu2020-20186, 2020
