The geology of Elbo Lake consists of granulite metasedimentary rocks, a megacrystic granite unit and a medium grained granite gneiss unit. Mylonite zones are common in the area and show up as strong topographic lineaments. The thin section mineralogy suggests granulite Facies metamorphism with later retrogression to amphibolite Facies. Owing to the lack of good structural data a precise determination of the deformation sequence was difficult to determine. However stereograms of the foliation measurements indicate a dome or half dome structure in the north-eastern portion of the thesis area.