Geochemistry of 2.45 Ga mafic dykes in northern Finland: Constraints on the petrogenesis and PGE prospectivity of coeval layered intrusions

• Published in: Lithos
• Main Authors: Guo, Fang-Fang, Maier, Wolfgang D., Heinonen, Jussi S., Hanski, Eero, Vuollo, Jouni, Barnes, Sarah-Jane, Lahaye, Yann, Huhma, Hannu, Yang, Shenghong
• Other Authors: Finnish Museum of Natural History, Department of Geosciences and Geography
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier Scientific Publ. Co 2023
• Subjects: Platinum-group elements; Mafic dykes; Sr isotopes; Thermal dynamic modelling; Palaeoproterozoic; Northern Finland; Geosciences; Portimo; Tsipringa; karelia*; karelian
• Online Access: http://hdl.handle.net/10138/564042

The Karelian craton contains abundant ~2.45 Ga mafic dykes that are compositionally, temporally and, in some cases, spatially related to PGE-mineralised mafic-ultramafic layered intrusions. The dykes can be sub-divided into four groups, namely siliceous high-magnesian basalts (SHMB), gabbronorites (...