Download or read book Sedimentology and Geomorphology of the Glacial Lake Hind Area Southwestern Manitoba Canada written by Chuanyu (Stephen). Sun and published by . This book was released on 1996 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glacial Lake Hind was a 4000 km2 ice-marginal lake which formed in southwestern Manitoba during the last deglaciation. It received meltwater from western Manitoba, Saskatchewan, and North Dakota via at least 10 channels, and discharged into glacial Lake Agassiz through the Pembina Spillway. Surface sediment outside of the area covered by glacial Lake Hind is dominantly till. There are two types of tills based on their carbonate content and calcite/dolomite ratios: one that has high carbonate content and a low calcium/dolomite ratio (Dh), which occurs east of glacial Lake Hind, and another that has low carbonate content and a high calcite/dolomite ratio (Dl), which occurs north, west, and south of glacial Lake Hind, and may underlie Lake Hind sediments. Four till units have been identified based on carbonate content, texture, and color. They are the Wawanesa till, Souris till, Fairfax till, and Carroll till. Sediments in the Lake Hind basin consist of up to 30 m of silt and clay, 25 m of sand and deltaic gravels. Much of the uppermost lacustrine sand in the central part of the basin has been reworked into aeolian dunes. No beaches have been recognized in the basin. Around the margins, clayey silt occurs up to an elevation of 457 m, and deltaic gravels occur at 434 - 462 m. In addition, there are a total of 12 deltas around the lake basin, and these can be divided into 3 groups based on the elevation of their surfaces: 1) above 457 m along the eastern edge of the basin and in the narrow southern end; 2) between 450 and 442 m at the western edge of the basin; and 3) below 442 m. The earliest stage of glacial Lake Hind began shortly after 12 ka, as a small lake formed between the eastern edge of the Souris Lobe and the western edge of the Red River Lobe in southwestern Manitoba. Two deltas at an elevation of above 457 m were formed in this lake. At the same time, the western edge of the Souris Lobe retreated far enough to allow glacial Lake Souris to expand northward along the western side of the basin from North Dakota; three deltas were built at an elevation of between 457 and 466 m in the Canadian part of this proglacial lake. Continued retreat of the Souris Lobe allowed the merger of glacial Lake Souris with the interlobate glacial Lake Hind. Subsequent erosion of the outlet into the Pembina valley allowed waters in the glacial Lake Hind basin to become isolated from glacial Lake Souris, and four deltas formed between 442 and 450 m by meltwater from the west. Next, a catastrophic flood from the Moose Mountain uplands in southeastern Saskatchewan flowed through the Souris River valley to glacial Lake Souris, in turn, spilling into Lake Hind and depositing another delta at an elevation of about 442 m. This resulted in further incision of the outlet into the deep and wide Pembina spillway, and a new level of glacial Lake Hind was established at 434 m. A second flood through the Souris River valley, this time from glacial Lake Regina, further eroded the outlet; most of glacial Lake Hind was drained as a result of this flood except for the deeper northern part. Coarse gravel was deposited by this flood, which differs from previous flood gravel because it is massive and contains less shale.
Download or read book Sedimentology and Geomorphology of the Glacial Lake Hind Area Southwestern Manitoba Canada written by Chuanyu (Stephen) Sun and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sedimentology Geomorphology and History of the Central Lake Agassiz Basin written by and published by . This book was released on 1996 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Exploration of the Glacial Lake Agassiz in Manitoba written by Warren Upham and published by W.F. Brown. This book was released on 1890 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Changing Prairie Landscapes written by Patrick Douaud and published by University of Regina Press. This book was released on 2000 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Landscapes of the Northern Great Plains have been constantly changing, but never so rapidly as under modern conditions of economic affluence and technological development. This change is multifaceted and has an impact not only on the fabric of culture and its perception of landscape, but also on the ecology and physical landforms. Multidisciplinary research has therefore become an important tool in identifying the influences that human activities have, not only on cultural landscapes but on biophysical ones as well. This collection of articles, originating in a conference held at the Royal Saskatchewan Museum in April 2000, focuses on just such an integration of research concerning the Great Plains of North America and involving the disciplines of geology, archaeology, biology, geography, sociology, and agriculture.
Download or read book Glacial and Environmental Geology of Northeastern Manitoba written by L. A. Dredge and published by . This book was released on 1992 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report and accompanying map describe and interpret the terrain conditions across 48,000 km2 of the coast and hinterland of Hudson Bay. The surface mapping of materials was combined with a study of river exposures in order to reconstruct the preglacial and glacial evolution of the landscape, and postglacial changes in permafrost, climate, and sea level. The geological interpretation was used to locate anomalously high concentrations of minerals of economic value, including gold and uranium, assess aggregate sources, identify areas of sensitive permafrost terrain, and to predict future environmental change.
Download or read book Report of Activities written by Manitoba. Geological Survey and published by . This book was released on 2000 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CIM Bulletin written by Canadian Institute of Mining and Metallurgy and published by . This book was released on 1999 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Till written by David J. A. Evans and published by John Wiley & Sons. This book was released on 2017-10-16 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the first comprehensive review of the current state of the science on tills It is critical that glacial scientists continue to refine their interpretations of ancient archives of subglacial processes, specifically those represented by tills and associated deposits, as they form the most widespread and accessible record of processes at the ice-bed interface. Unfortunately, despite a long history of investigation and a lexicon of process-based nomenclature, glacial sedimentologists have yet to reach a consensus on diagnostic criteria for identifying till genesis in the geological record. What should be called till? Based on the author’s extensive field research, as well as the latest literature on the subject, this book attempts to provide a definitive answer to that question. It critically reviews the global till literature and experimental and laboratory-based assessments of subglacial processes, as well as the theoretical constructs that have emerged from process sedimentology over the past century. Drawing on a wide range of knowledge bases, David Evans develops a more precise, contemporary till nomenclature and new investigatory strategies for understanding a critical aspect of glacial process sedimentology. Provides an in-depth discussion of subglacial sedimentary processes, with an emphasis on the origins of till matrix and terminal grade and the latest observations on till evolution Describes contemporary laboratory and modelling experiments on till evolution and techniques for measuring strain signatures in glacial deposits Develops an updated till nomenclature based on an array of knowledge bases and describes new strategies for field description and analysis of glacial diamictons Written by an internationally recognised expert in the field, this book represents an important step forward in the modern understanding of glacial process sedimentology. As such, Till: A Glacial Process Sedimentology is an indispensable resource for advanced undergraduates and researchers in sedimentology, glacier science and related areas.
Download or read book A Practical Guide to the Study of Glacial Sediments written by David J. A. Evans and published by Routledge. This book was released on 2014-04-23 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediments are the most valuable form of physical evidence for past Earth surface processes. They have the potential to build up an archive of events and provide a window into the past. Through careful examination of sediments the shifting patterns of surface processes across space and time are revealed, allowing us to reconstruct past environments and environmental change. A Practical Guide to the Study of Glacial Sediments is a guide to the standard techniques employed to read the sedimentary record of former glaciers and ice sheets. It demonstrates that the often complex and fragmentary glacial sedimentary record can, when examined systematically and rationally, provide detailed insights into former environments and climates in places where no other evidence is available. The complementary techniques covered in this book include: facies description, grain size analysis, clast form assessment, clast macrofabric analysis, micromorphology, particle lithology and assessment of engineering properties. They yield consistent and meaningful results in a range of glacial depositional environments throughout the world, from the high Arctic to the Himalayas. A Practical Guide to the Study of Glacial Sediments provides students and researchers with a clear and accessible guide to recording and interpreting glacial successions wherever the location.
Download or read book Life Land and Water written by University of Manitoba and published by . This book was released on 1967 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes sections on glacial Lake agassiz itself and on its paleoecology and history of human population.
Download or read book Surficial Geology of the Waterhen Grand Rapids Area Manitoba 63 B 63 G written by R. W. Klassen and published by . This book was released on 1967 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Glaciofluvial and Glaciolacustrine Sedimentation written by Alan V. Jopling and published by . This book was released on 1975 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CRREL Bibliography written by and published by . This book was released on 1998 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1997 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sedimentology and Geomorphic Evolution of the South Shore of Lake Winnipeg written by Erik Nielsen and published by . This book was released on 1994 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quarterly Bulletin of the Canadian Mining Institute written by Canadian Institute of Mining, Metallurgy and Petroleum and published by . This book was released on 1999 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
