fig04.htm

Figure 4. Distribution of sialic crustal fragments generated by the end of the 3.0-2.92 Ga phase. 1 - ancient sialic core (3.2-3.1 Ga); 2 - western Vodlozero accretionary orogen; 3 - newly formed sialic crust; 4 - portion of the western Karelian terrane with likely preexisting new crust; 5 - inferred depositional basin; 6 - available U-Pb zircon ages; 7 - position of rocks with Nd model ages > 2.92 Ga.


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