000 03005nem  2200385za 4500
0019.557247
003CaOODSP
00520230131161131
006m    go  c f      
007cr |||||||||||
008150406s2015    onc    bd a  fo 0   eng d
020 |a978-1-100-25444-9
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn-nt
0861 |aM183-1/207-2014E-PDF
24500|aReconnaissance surficial geology, Nonacho Lake, Northwest Territories, NTS 75-F |h[electronic resource].
250 |aPreliminary version
255 |aScale 1:125,000
260 |aOttawa : |bNatural Resources Canada, |c2015.
300 |a1 map : |bcol. + |e1 map information document ([5] p.).
4901 |aCanadian geoscience map ; |v207
500 |aThis 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/
504 |aInlcudes bibliographic references.
5203 |a"Reconnaissance mapping, through aerial photograph interpretation and limited legacy field data in the Nonacho Lake map area, provides a basic understanding of surficial sediments and glacial history. Much of the area is characterized by rugged terrain, with steep-sided bedrock hills, and local relief reaching up to 100 m. Bedrock is well exposed in the western half of the map area. Till blanket, veneer and glaciofluvial outwash become increasingly more extensive in the central through to the eastern half of the map area, although bedrock can still be found in many regions. Fluted till, crag-and-tails and striations record ice advance to the west-southwest and southwest. Glaciofluvial corridors consisting of eskers, ice-contact sediments and scoured bedrock, record a generally southwestward meltwater flow across the map area during deglaciation. In the Nonacho Lake basin and Taltson River valley to the east, glaciolacustrine deltas and beaches are found at 320 m, 325 m, 335 m, and 350 m. In the Gray Lake basin, they occur at 330 m, 335 m, and 350 m. Pockets of glaciolacustrine sediments occur in several isolated lake basins, including Tejean, Porter, Vital, Halliday, Powder and Doranlakes. These are interpreted to be short lived, ice-dammed glacial lakes, with Nonacho Lake being the most extensive"--Abstract.
546 |aIncludes abstract in French.
69207|2gccst|aGeological maps
69207|2gccst|aLakes
69207|2gccst|aSurficial geology
7101 |aCanada. |bNatural Resources Canada.
7102 |aGeological Survey of Canada.
830#0|aCanadian geoscience map ;|v207.|w(CaOODSP)9.506260
85640|qPDF|s35.59 MB|uhttps://publications.gc.ca/collections/collection_2016/rncan-nrcan/M183-1-207-2014-1-eng.pdf|zMap
85640|qPDF|s417 KB|uhttps://publications.gc.ca/collections/collection_2016/rncan-nrcan/M183-1-207-2014-eng.pdf|zMap information document
85640|qHTML|sN/A|uhttps://doi.org/10.4095/295595|zGEOSCAN DOI