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The original Umfreville claim block was selected for staking after a reinterpretation of the structural geology and an extensive review of exploration assessment reports was completed. An initial feature of interest was the horseshoe shape of Umfreville Lake which suggested the presence of a fold structure. Lakes can be created when structures in the basement rock allow the overlying sandstone to collapse. Hydrothermal alteration of the sandstone matrix to clay minerals can also contribute to the collapse of overlying sandstone, for example Cigar Lake.
The distinctive shape of the original Umfreville claim block reflects where a large-scale fold has now been interpreted to lie. Purepoint’s 2005 MEGATEM II airborne electromagnetic (EM) survey confirmed a strong conductive trend that is apparently associated with the interpreted fold structure. The conductive trend is seen to wrap around Umfreville Lake providing further evidence that the lake reflects a fold nose at depth. The property has now been refined into 2 projects (Umfreville North and Umfreville South) made up of 6 claims covering xx,xxx hectares. |
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