00000nam 2200000za 4500 9.804456 CaOODSP 20230131161135 cr ||||||||||| 150406s1991 onc|||||o f|0| 0 eng d (paper) 0-660-13838-7 CaOODSP eng eng fre n-cn-nt M42-404E-PDF Aitken, J.D. The Ice Brook Formation and post-Rapitan, late Proterozoic glaciation, Mackenzie Mountains, Northwest Territories [electronic resource] / J.D. Aitken. Ottawa : Energy, Mines and Resources Canada : Geological Survey of Canada, c1991. [5], 43 p. : maps, figs. Bulletin / Geological Survey of Canada 404 The catalogue number (M42-404E) and ISBN (0-660-13838-7) for the print edition have been copied in this electronic publication. Includes bibliographical references. "In the Mackenzie Mountains, glacial influence on deposition of the Upper Proterozoic Sayunei formations of the Rapitan Group has been well documented. Until recently, these havebeen considered the only Proterozoic glacial deposits of the region. This report documents the evidence for glacial origin of Upper Proterozoic diamictites occurring one kilometre or more stratigraphically above the Rapitan. These younger diamictites previously were thought to be the result of mass flow processes."--Summary, p. 3. gccst Glaciers gccst Sedimentary rock gccst Geology Canada. Energy, Mines and Resources Canada. Geological Survey of Canada. Bulletin (Geological Survey of Canada) 404 (CaOODSP)9.504778 PDF 27.45 MB https://publications.gc.ca/collections/collection_2015/rncan-nrcan/M42-404-eng.pdf