Geological Survey of Canada, Current Research (Online) no. 2005-B1 - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Geological Survey of Canada, Current Research (Online) no. 2005-B1 write by Lynda A. Dredge. This book was released on 2005. Geological Survey of Canada, Current Research (Online) no. 2005-B1 available in PDF, EPUB and Kindle. This study presents new measurements of glacial lake levels in the Wager Bay map sheet (National Topographic System 56 G), which includes the head of Wager Bay, Ford Lake, and Brown Lake. Two main types of glacial lakes are described in this paper. The first are proglacial lakes, where sediment-laden melt water that flowed down the natural slope of the land was obstructed by till or kame dams. The second are ice-marginal lakes, where water bodies were trapped between a major ice margin and the hillsides. The paper summarizes the main characteristics of each type.
Geological Survey of Canada, Current Research (Online) no. 2005-B2
Geological Survey of Canada, Current Research (Online) no. 2005-B2 - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Geological Survey of Canada, Current Research (Online) no. 2005-B2 write by Isabelle McMartin. This book was released on 2005. Geological Survey of Canada, Current Research (Online) no. 2005-B2 available in PDF, EPUB and Kindle. This paper presents results from a Quaternary mapping project conducted in two areas of central mainland Nunavut that were located beneath the Keewatin Ice Divide during the last glaciation. Field work included surficial mapping, regional-scale till sampling, stratigraphic studies, and ice-flow indicator surveys. The paper summarizes the findings related to ice flow directions, patterns, and the sequence of flow events in the two map areas. Preliminary interpretations are offered of the ice flow record from the oldest recognized ice-flow events to the most recent flows.
Geological Survey of Canada, Current Research (Online) no. 2005-B3
Geological Survey of Canada, Current Research (Online) no. 2005-B3 - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Geological Survey of Canada, Current Research (Online) no. 2005-B3 write by Lynda A. Dredge. This book was released on 2005. Geological Survey of Canada, Current Research (Online) no. 2005-B3 available in PDF, EPUB and Kindle. This report briefly describes the nature, extent, and age of marine deposits near the head of Wager Bay on the west side of Hudson Bay, Nunavut. The main focus is on determination of the marine limit, or the highest elevation reached by the post-glacial sea. The elevation of the marine limit yields information about the extent of inundation by post-glacial seas, the amount of post-glacial crustal deformation, and the elevation below which the geochemical composition of glacial deposits may have been altered by marine processes or by mixing of glacial materials with marine sediments. Marine limit positions were determined by recording the elevations of: raised deltas that indicate where meltwater streams & overflow channels from glacial lakes fed in to high-level water bodies; ice-contact deltas; and trimlines where the uppermost limit of wave erosion of glacial deposits is prominent.
Geological Survey of Canada, Current Research (Online) no. 2005-C3
Geological Survey of Canada, Current Research (Online) no. 2005-C3 - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Geological Survey of Canada, Current Research (Online) no. 2005-C3 write by David Snyder. This book was released on 2005. Geological Survey of Canada, Current Research (Online) no. 2005-C3 available in PDF, EPUB and Kindle. This paper describes a novel, high-resolution application of cross-borehole seismology at the Snap Lake diamond mine, Northwest Territories, to assess whether the relatively thin kimberlite dyke that hosts the diamonds could be mapped underground with sufficient resolution to accurately estimate its volume and to guide mining. Subsequent mining and mapping with the 50-by-70-metre test panel indicated whether the technique was able to map the top & bottom surfaces of the dyke and to identify ramps, pinch-outs, and cross-cutting fracture planes. The tests also compared the performance of that new technique with two other geophysical methods, high-frequency vibrating seismic surveying and ground penetrating radar.
Geological Survey of Canada, Current Research (Online) no. 2005-D2
Geological Survey of Canada, Current Research (Online) no. 2005-D2 - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Geological Survey of Canada, Current Research (Online) no. 2005-D2 write by . This book was released on . Geological Survey of Canada, Current Research (Online) no. 2005-D2 available in PDF, EPUB and Kindle.
