Download or read book The Eastern Outlets of Lake Agassiz written by Leonard Harvey Thorleifson and published by . This book was released on 1983 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Eastern Outlets of Lake Agassiz written by L. Harvey Thorleifson and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Eastern Outlets of Lake Agassiz written by Leonard Harvey Thorleifson and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early Stages and Outlets of Lake Agassiz written by Frank Leverett and published by . This book was released on 1912 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Glacial Lake Agassiz written by Warren Upham and published by . This book was released on 1896 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lake Agassiz written by Bill Redekop and published by . This book was released on 2017-10 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "By comparison, today's Great Lakes are puny. But not so long ago, in North America's heartland, there was a lake so vast it swallowed most of Manitoba and surged through parts of Ontario, Saskatchewan, North and South Dakota and Minnesota. It's called Lake Agassiz and some believe it was the largest lake the world has ever known. Born of the melting sheets of ice that had covered Canada and the northern U.S. for millennia, it was a force of nature for 6,000 years. During that time, Lake Agassiz's waters carved huge valleys, blasted through solid rock to create canyons, and changed the climate of Europe for a thousand years. Today, we share its legacy--the seemingly endless prairie that was once lake bottom; the magnificent beaches along Lakes Winnipeg and Manitoba; one of the largest river deltas in the world, and the meandering rivers that sometimes threaten springtime havoc. Yet most know little about this powerful architect of our landscape and our lives. Bill Redekop's Lake Aga
Download or read book The Story of the North Star State written by Daniel Everett Willard and published by . This book was released on 1922 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ice Age Earth written by Alastair G. Dawson and published by Routledge. This book was released on 2013-06-17 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ice Age Earth provides the first detailed review of global environmental change in the Late Quaternary. Significant geological and climatic events are analysed within a review of glacial and periglacial history. The melting history of the last ice sheets reveals that complex, dynamic and catastrophic change occurred, change which affected the circulation of the atmosphere and oceans and the stability of the Earth's crust.
Download or read book Publications written by McGill University. Museums and published by . This book was released on 1962 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quetico written by Jon Nelson and published by Dundurn. This book was released on 2009-05-18 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quetico Park in northwestern Ontario celebrates its 100th anniversary in 2009. Long-recognized as a gem among parks, Quetico contains some of the largest stands of old-growth red and white pine in Canada , as well as a diversity of fascinating lichens, carnivorous plants in specialized habitats. The author presents an insightful look into Quetico’s natural history as he examines the adapations that have allowed moose, white-tailed deer, wolves and other mammals to survive. The human history of the park is also explored, beginning with the Objiwa living there when the area was designated as a park, followed by accounts of trappers, loggers, miners, park rangers, and poachers. Beginning with the retreat of the glaciers, the author combines his thorough research into Quetico’s long and varied history with the threads of his own extensive involvement with the park. The result is a splendid tribute to a very special place.
Download or read book The Quaternary Period in the United States written by A.R. Gillespie and published by Elsevier. This book was released on 2003-12-17 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews advances in understanding of the past ca. two million years of Earth history - the Quaternary Period - in the United States. It begins with sections on ice and water - as glaciers, permafrost, oceans, rivers, lakes, and aquifers. Six chapters are devoted to the high-latitude Pleistocene ice sheets, to mountain glaciations of the western United States, and to permafrost studies. Other chapters discuss ice-age lakes, caves, sea-level fluctuations, and riverine landscapes. With a chapter on landscape evolution models, the book turns to essays on geologic processes. Two chapters discuss soils and their responses to climate, and wind-blown sediments. Two more describe volcanoes and earthquakes, and the use of Quaternary geology to understand the hazards they pose. The next part of the book is on plants and animals. Five chapters consider the Quaternary history of vegetation in the United States. Other chapters treat forcing functions and vegetation response at different spatial and temporal scales, the role of fire as a catalyst of vegetation change during rapid climate shifts, and the use of tree rings in inferring age and past hydroclimatic conditions. Three chapters address vertebrate paleontology and the extinctions of large mammals at the end of the last glaciation, beetle assemblages and the inferences they permit about past conditions, and the peopling of North America. A final chapter addresses the numerical modeling of Quaternary climates, and the role paleoclimatic studies and climatic modeling has in predicting future response of the Earth's climate system to the changes we have wrought.
Download or read book Mechanisms of Global Climate Change at Millennial Time Scales written by Lloyd D. Keigwin and published by American Geophysical Union. This book was released on 1999-01-26 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contributors describe the current understanding of abrupt climate variations that have occurred at millennial to submillennial time scales, events now recognized as characteristics of the global climate during the last glaciation. Subjects covered include analysis of modern climate and ocean dynamics, paleoclimate reconstructions derived from the marine, terrestrial and ice core records, and paleoclimate modeling studies. The breadth of global paleoclimate knowledge presented here provides information required to answer many questions and provides a road map to address remaining problems. Most material is from a June 1998 conference. Lacks a subject index. Annotation copyrighted by Book News, Inc., Portland, OR.
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 Catastrophic Flooding written by L. Mayer and published by Routledge. This book was released on 2020-05-11 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, first published in 1987, contains a collection of papers presented at the 18th Binghamton Symposium, focusing on the topic of catastrophic flooding. These papers make the case for the careful collection and interpretation of data from which the importance and effects of catastrophic flooding may be deduced. Questions tackled include: what are the causes and effects of catastrophic flooding? What parameters should be used to measure them? What effect do they have on erosional and depositional landforms? Can modelling be used to predict their flow dynamics?
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 The Story of the Prairies written by Daniel Everett Willard and published by . This book was released on 1902 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eastward Routing of Glacial Lake Agassiz Runoff Caused the Younger Dryas Cold Event written by David J. Leydet and published by . This book was released on 2016 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this thesis is to analyze an abrupt case of climate change in the past as a means to understand the mechanisms that force climate change. By looking to past analogs of climate change, we hopefully will gain an understanding of these events, which could be used to further our understanding of future climate change. In this light, I analyze the case of the Younger Dryas (YD), an abrupt cooling event that occurred from ~12.9 ka to ~11.7 ka. We investigate several hypotheses regarding the cause of the YD and attempt to determine the forcing mechanism for this abrupt cooling event. I use 10Be surface exposure dating as our method for dating retreat of the Laurentide Ice Sheet from the eastern outlets of glacial Lake Agassiz, a large pro-glacial lake that formed during the last deglaciation whose drainage into the North Atlantic is hypothesized to have caused the YD via a slowing of ocean overturning circulation. I find that the eastern outlets of glacial Lake Agassiz begin to deglaciate at 14.0 ± 0.3 ka with ice retreating from the key Lake Kaministikwia outlet at 13.0 ± 0.3 ka, concurrent with the onset of the YD. I also date retreat from the Steep Rock moraine at 13.8 ± 0.2 ka and retreat from the Marks moraine by 11.0 ± 0.4 ka. I use our chronology along with other terrestrial and marine proxies to reconstruct the meltwater routing history of Lake Agassiz. Specifically, the Gulf of St. Lawrence isotopic record indicates meltwater routing through Eastern Outlets, peaking at ~12.6 ka. Subsequently, the isotopic record of the Arctic Ocean near the mouth of the Mackenzie River indicates meltwater routing beginning at ~12.4 ka and peaking at 12.2 ka. I argue that the timing of these meltwater pathways support the hypotheses that the YD was caused by freshwater forcing, weakening the Atlantic Meriodional Overturning Circulation, and thus cooling the climate of the Northern Hemisphere. The results demonstrate the importance of meltwater routing on the climate system and will be important in understanding the implications of future ice sheet-oceanclimate interactions in a climatically changing world.
