Report Of Exploration Of The Glacial Lake Agassiz In Manitoba Microform
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Report of Exploration of the Glacial Lake Agassiz in Manitoba [microform] by Warren 1850-1934 Upham,Geological and Natural History Survey Pdf
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Report of Exploration of the Glacial Lake Agassiz in Manitoba [microform] by Warren 1850-1934 Upham,Geological and Natural History Survey Pdf
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Report of Exploration of the Glacial Lake Agassiz in Manitoba by Warren Upham Pdf
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Glacial and Environmental Geology of Northeastern Manitoba by L. A. Dredge,F. M. Nixon,Geological Survey of Canada Pdf
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.
Sedimentology and Geomorphology of the Glacial Lake Hind Area, Southwestern Manitoba, Canada by Chuanyu (Stephen). Sun Pdf
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.
Quaternary Geology and Geomorphology of Northwestern Manitoba by L. A. Dredge,F. M. Nixon,R. J. Richardson,Geological Survey of Canada Pdf
The landscape of Northwestern Manitoba is typical of much of the Canadianmidnorth. The area includes an extensive tract of muskeg in the south, which passes through boreal forest to tundra barrens. Some parts of theregion lie within the zone of continuous permafrost; others lie in thedescontinuous permafrost zole. Major lanscape elements were shaped inpre-Quaternary times, but most surface deposits and landforms are the resultof the last contental glaciaion and the subsequent inundation of glaciallakes and the sea. This report was written in response to a need for information on terrain conditions related to engineering construction, andon glacial transport patterns as they relate to drift prospecting and mineralexploration.
Report on the Exploration of the Country Between Lake Superior and the Red River Settlement, and Between the Latter Place and the Assiniboine and Saskatchewan . . by Simon James Dawson Pdf
Report on the East Shore of Lake Winnipeg and Adjacent Parts of Manitoba and Keewatin [microform] by J B (Joseph Burr) 1858-1957 Tyrrell,D B (Donaldson Bogart) 18 Dowling,Geological Survey of Canada Pdf
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
