00000nem 2200000za 4500 9.557270 CaOODSP 20230131161131 m go c f cr ||||||||||| 150406s2015 onc bd a fo 0 eng d 978-1-100-25545-3 CaOODSP eng eng fre n-cn-bc M183-1/214-2015E-PDF Surficial geology, Gnawed Mountain area, British Columbia, parts of NTS 92-I/6, NTS 92-I/7, NTS 92-I/10, and NTS 92-I/11 [electronic resource]. Preliminary version Scale 1:50,000 Ottawa : Natural Resources Canada, 2015. 1 map : col. + 1 map information document ([5] p.). Canadian geoscience map ; 214 This record only includes the map and the “Map information document” in PDF, the complete data set with all the files in various formats is available for free download at http://geoscan.nrcan.gc.ca/ Includes bibliographic references. "The Gnawed Mountain area includes the Highland Valley Copper mine (porphyry Cu-Mo) which is a major copper producer in Canada. The most areally extensive glacial sediment in the region of the mine is till deposited during the Late Wisconsinan Fraser Glaciation. Glaciers dominantly flowed south to southeastward during this glacial event as indicated by the orientation of numerous drumlins and flutings. During ice retreat, lateral meltwater channels were eroded in the flanks of valleys and the hillsides ofmountains indicating that ice occupied low ground when higher elevations were ice-free. Accumulations of glaciofluvial sand and gravel, too small to be mapped at this scale, can be found in proximity to these meltwater channels. The glaciofluvial drainage was generally to the south during ice retreat with aggradation of glaciofluvial sediments in the Guichon Creek valley. Glacial lake sediments in the Witches Brook valley were deposited in a glacial lake which formed when the eastward drainage was blocked by a mixture of ice and sediments. Mine tailings (anthropogenic deposits) are present near the open-pits and in the valley which extends northwest from the mine (previously occupied by Pukaist Creek). Limited field work was completed in this region in 2011 and 2012. Field station locations are shown on the map"--Abstract. Includes abstract in French. gccst Geological maps gccst Geomorphology gccst Surficial geology Canada. Natural Resources Canada. Geological Survey of Canada. Canadian geoscience map ; 214. (CaOODSP)9.506260 PDF 53.40 MB https://publications.gc.ca/collections/collection_2016/rncan-nrcan/M183-1-214-2015-1-eng.pdf Map PDF 182 KB https://publications.gc.ca/collections/collection_2016/rncan-nrcan/M183-1-214-2015-eng.pdf Map information document HTML N/A https://doi.org/10.4095/296285 GEOSCAN DOI 296285