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Overall the Black Bay Fault experience four main generation of deformation,...
Overall the Black Bay Fault experience four main generation of deformation, D1-4. Beginning with sinistral west side up motion, D1 produced the majority of exhumation of the BBF. D2 produced large scale folding of the Black Bay Fault resulting in the variation of the fault trace. D3 marks the onset of dextral west-side up transpression. D4 produced brittle to brittle-ductile deformation, better preserved in the south due to differential uplift along the fault. This study shows that REE mineralization along the BBF is not restricted to northern SK, and instead, similar mineralization assemblages are observed ~100 km NE into the NWT, at the Gemelo showing. Thus, the historically underestimated economic potential of the NE portion of the BBF has to be re-evaluated.
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