00000nem 2200000za 4500 9.575830 CaOODSP 20231228131223 m go c f cr ||||||||||| 150406s2013 onc bd a fo 0 eng d 978-1-100-21746-8 CaOODSP eng eng fre n-cn-nt M183-1/114-2013E-PDF Oviatt, N. M. Surficial geology, Breynat Point, Northwest Territories, NTS 85-B/15 [electronic resource] / [by] N.M. Oviatt and R.C. Paulen ; geomatics and cartography by L. Robertson. Preliminary version Scale 1:50,000 Ottawa : Natural Resources Canada, c2013. 1 map : col. Canadian geoscience map ; No. 114 Includes a legend. Includes bibliographical references. "The Pine Point region is of very low relief and characterized by black spruce bogs with local relief not exceeding 20 m. During Wisconsin time, the Breynat Point map sheet was actively and continuously glaciated by the Laurentide Ice Sheet which was generally flowing to the west. Multiple till units were observed in the open pits, however only the uppermost unit was mapped at surface. The map area was completely inundated by proglacial Lake McConnell which formed during deglaciation, glaciolacustrine sediments are the dominant materials that occur as beach ridges and littoral sediments. Reworked beach ridges form eolian dunes up to 15 m high. Raised strandlines formed by earlier phases of Great Slave Lake mark the former isostatic rebound of the land surface. Organic deposits are extensive with mature peatlands and fens, which are underlain by discontinuous permafrost with active thermokarst. Abandoned open pits and waste piles pockmark the former Pine Point mining district"--Abstract. Includes abstract in French. 14-03 2014-01-17 gccst Geological maps gccst Geomorphology gccst Surficial geology Paulen, Roger C., 1970- Robertson, L. (Louis) Canada. Natural Resources Canada. Geological Survey of Canada. Canadian geoscience map ; No. 114. (CaOODSP)9.506260 PDF 11.96 MB https://publications.gc.ca/collections/collection_2014/rncan-nrcan/M183-1-114-2013-eng.pdf HTML N/A https://doi.org/10.4095/292247 292247