AbstractsEarth & Environmental Science

In the summer of 1949 a field party of the Geological Survey of Canada made a reconnaissance survey of the Labrador coastal region. In the course of the summer a section of the coast and the coastal islands between Domino Run and Hamilton Inlet were studied. Here the Labrador coast, which is relatively unexplored, was found to consist mainly of a grey granite gneiss which had been intruded by basic rocks of at least two ages. The older of the intrusive rocks are garnet-bearing and have since been found to contain well-developed reaction rims. Parts of the garnetiferous gabbro-diabase, which is the older intrusive occur as inclusions in the gneiss and the inclusions have been metamorphosed. The younger intrusives have not been altered like the older locks. The character and the origin of the garnet in the gabbro-diabase as well as a detailed description of the main rock types is proposed. [...]