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Palaeoproterozoic mafic igneous rocks (2500-2440Ma) are exposed in the form of layered intrusions, dykes, and volcanic rocks in the southern Canadian Shield and the Fennoscandian Shield. Both igneous events were associated with episodes of continental rifting. The tectonic and regional geological evolution of the two regions during the Palaeoproterozoic are strikingly similar. Further comparisons...
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