Mafic Intrusions of ca. 2400 Ma Large Igneous Province in the Belomorian Mobile Belt: First Baddeleyite U-Pb ID-TIMS Data

摘要

U-Pb ID-TIMS dating of igneous baddeleyite from metamorphosed coronitic gabbronorites in the central part of the Belomorian mobile belt, Fennoscandian shield was performed for the first time. The obtained age of 2404 +/- 11 Ma indicates that studied gabbronorites belong to the ca. 2400 Ma large igneous province and thereby allows to extend its area on the Fennoscandian Shield. A short duration of large mafic igneous events in the Paleoproterozoic.