Abstract
The banded iron formation (BIF) of the Neoarchean (2.76-2.74 Ga) Kostomuksha Formation of the Kostomuksha greenstone belt of the Karelian Craton was shown to contain the following accessory minerals: zircon, apatite, monazite and barite. Zircons from BIF have 2.9-2.8 Ga magmatic cores indicating the presence of Mesoarchean rocks in source areas. Metamorphic zircons were dated at 2.73, 2.64 and 1.86 Ga. They mark the polymetamorphic evolution.
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Schedule a callMore From: Proceedings of the Karelian Research Centre of the Russian Academy of Sciences
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