Geology
The Mount Pleasant deposits are located in southern New Brunswick within the Appalachian Orogen. These deposits occur within gently dipping Late Devonian age volcanic and sedimentary rocks that are the remnants of a large epicontinental caldera complex.
The regional geology in the mine area is dominated by the Mount Pleasant Caldera, the exposed part of which measures approximately 13 by 17 kilometres. Multiple layered granitic intrusive rocks and associated mineralization at Mount Pleasant were emplaced along the southwestern margin of the caldera complex. This structure occurs within the northern extension of the Appalachian geosynclinals belt and is situated on the southeast flank of New Brunswick's Central Basin.
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