Volcanic rocks in the area form part of an Archean volcano-sedimentary succession. The rocks have been subjected to three episodes of deformation. Minor folds in the area have formed on the southwest limb of a regional anticlinal structure. The axial surface of the regional anticline strikes north-northwest and dips steeply to the northeast. The minor folds were superimposed by small-scale folds and chevron folds of a later folding episode. A prominent crenulation cleavage and kink banding accompanied this folding event. The final deformation is expressed by the development of kink bands which are overprinting pre-existing structures.
Plutonic rocks were emplaced and their outcrop pattern is elongated parallel to the axial surface of the regional anticlinal structure.