AbstractsEarth & Environmental Science

Although the Thettord-Black Lake District has received considerable attention the past, a great deal of information, of geological value has become available during the past twenty years as a result of the progress made in the mining and intensive exploration. The area chosen was intended to include all of the major intrusive bodies of this locality; however, a five minute strip along the eastern side still remains to be mapped before this objective may be considered to have been achieved. Nevertheless, all of the asbestos deposits lie within the portion already mapped, and all of the intrusive rock types are present in this portion.