00000nam 2200000za 4500 9.834184 CaOODSP 20250724092704 cr ||||||||||| 170323s1997 xxcbao|#o f|0| 0 eng d CaOODSP eng n-cn-nt M42-422E-PDF The geology, mineral and hydrocarbon potential of Northern Yukon Territory and Northwestern district of Mackenzie [electronic resource] / edited by D.K. Norris. [Ottawa] : Natural Resources Canada, 1997. 401 p. : maps, ill., photos. Bulletin 422 Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references. "In 1952 the Geological Survey of Canada undertook the first systematic mapping of one of the more remote regions of northern Canada using helicopters. The trial project, Operation Keewatin, set the stage for a series of successful reconnaissance mapping endeavors covering vast regions of the Canadian Shield, the Arctic Islands, and the northern Canadian Cordillera and adjacent Interior Plains"--p.1. gccst Geology Norris, D. K. Canada. Natural Resources Canada. Geological Survey of Canada. Bulletin (Geological Survey of Canada) 422 (CaOODSP)9.504778 PDF 57.31 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M42-422-eng.pdf