THE GEOLOGY AND MINERAL DEPOSITS OF THE HARRI CANA W AND BELL RIVER BASINS
During the last three years the discovery of gold in the belt of volcanic and sedimentary rocks extending eastward from the Porcupine and Kirkland Lake gold-fields has caused a great deal of excitement in mining circles. The area is heavily drift covered, and every aid to the location of veins is eagerly grasped. A knowledge of the physiographic history of the area is of the utmost importance in the application of many of these aids.
diabase, feldspar, porphyry, Post-Keewatin Granite, quartz, Dykes, Granite, Granites, Porphyry, Rock, Rocks, sediments, Veins, Volcanic, Volcanics