Download or read book Toronto s Geological Past written by E. B. Freeman and published by . This book was released on 1975 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toronto Rocks written by Nicholas Eyles and published by Markham, Ont. : Fitzhenry & Whiteside. This book was released on 2004 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We use our knowledge of geology to build safer cities." (from Toronto Rocks) With its dense streetscapes, the Toronto region seems an unlikely location for a geological field trip, yet as our cities expand and natural landscape becomes buried, the greater the importance of the geology beneath our feet to our everyday existence. Where can we build safely? Where do we dump our garbage? Where are our ground waters and how can we protect them? What happens to salt we put on icy roads when it permeates into the ground in the spring? How can we protect and preserve such national treasures as the Niagara Escarpment and the Oak Ridges Moraine? As cities continue to expand, altering the natural landscape and changing the natural balance of the planet beneath our feet, the answers to questions about our geological past are more important today than ever before. Where can we build safely? How strong are the rocks beneath the buildings we continue to push skyward? What do we do with polluted soil? Will the CN Tower fall? What does the history of earthquakes tell us of possible future events? In Toronto Rocks, University of Toronto geology professor Nick Eyles conducts a unique tour of Canada's largest city past and present; a city of more than 6 million people where the past beneath our feet is perhaps more important than ever before.
Download or read book Toronto s Geological Past written by Ontario. Ministry of Natural Resources and published by Ministry of Natural Resources. This book was released on 1975 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Geological History of Lake Superior written by Robert Bell and published by Forgotten Books. This book was released on 2016-12-02 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Geological History of Lake Superior: Read Before the Canadian Institute, Toronto, April 15th, 1899 Before the advent of the glacial period a great part of North America stood at an elevation of 3000 feet or more above its present level, and the disintegration and removal of the rocks due to rainfall alone, which was facilitated by the greater elevation, went on for a vast length of time. This is proved by the existence of long and deep river valleys, some of them running down from the central parts of the continent to the present sea coasts, and beyond them into the depths of the ocean. The old valley of the St. Lawrence can be traced for 800 miles. The ancient bed of the Hudson has been followed by soundings, from its present mouth, down the slope of the bottom of the ocean far out to sea, The canon of the Saguenay, and those of the Grand or Hamilton and other rivers of Labrador, as well as the channels of many of the long straight lakes and river stretches in the Archaean country to the north and northwest of us, are due partly to atmospheric and aqueous erosion during a long geological period while the land stood at higher levels. It can be shown that the grade of the Mississippi from its source to the sea was much steeper formerly than now, the present modification or lowering of the slope amounting to some feet. The valleys thus excavated guided, to a considerable extent, the movements of the great glaciers which ploughed the surface of hill and dale, excavating and carrying forward vast quantities of the softened surface rock, together with harder portions in the shape of fragments, boulders and pebbles, which together constitute our till or hard-pan and other deposits, collectively called drift. The general tendency of the glacial action would be to enlarge the main valleys of the preglacial surface and to fill up or modify the smaller ones. The geological structure and the relative resisting powers of the rocks were the primary or fundamental causes which predetermined the loca tion, direction, extent, etc., of the valleys and basins thus formed by the combined action of aqueous denudation and glacial action. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Toronto Rocks written by Nick Eyles and published by . This book was released on 2013-04-22 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We use our knowledge of geology to build safer cities." (from Toronto Rocks) With its dense streetscapes, the Toronto region seems an unlikely location for a geological field trip, yet as our cities expand and natural landscape becomes buried, the greater the importance of the geology beneath our feet to our everyday existence. Where can we build safely? Where do we dump our garbage? Where are our ground waters and how can we protect them? What happens to salt we put on icy roads when it permeates into the ground in the spring? How strong are the rocks beneath the buildings we continue to push skyward? What do we do with polluted soil? How can we protect and preserve such national treasures as the Niagara Escarpment and the Oak Ridges Moraine? Will the CN Tower fall? What does the history of earthquakes tell us of possible future events? In Toronto Rocks, University of Toronto geology professor Nick Eyles conducts a unique tour of Canada's largest city past and present; a city of more than 6 million people where the past beneath our feet is perhaps more important than ever before.
Download or read book History of the Royal Ontario Museum of Geology written by Royal Ontario Museum of Geology and published by . This book was released on 1939 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ontario Rocks written by N. Eyles and published by Markham, Ont. : Fitzhenry & Whiteside. This book was released on 2002 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: In its long and rocky past, the place we call Ontario has traveled across the equator, been peppered and pockmarked by meteorites, seen the rise and decline of towering mountains, and gave rise to some very strange and now extinct organisms. In fact, what seems like a changeless landscape was once covered by vast seas and huge, continent-wide ice sheets which measured 2 kilometres thick, leaving in their wake, the Great Lakes. Ontario Rocks tells this fascinating 3 billion year long story of Ontario's geological evolution, from its beginnings as part of an early landmass called Arctica, its incorporation into enormous supercontinents, through to the repeated ice ages and abrupt climatic changes of the last few thousand years. Merging Canadian geology with global evolution, this highly illustrated survey also touches on the development of Ontario's mining and oil industries, and the commercial use of rocks as building material. Ontario Rocks concludes with an exploration of the "artificial" urban landscape, and how geologists use their knowledge to safeguard groundwater and rivers, dispose of wastes and understand the hazards posed by earthquakes and erosion. Ontario Rocks is a highly accessible sourcebook, perfect for students and all those intrigued by the history and formation of the land under us.
Download or read book Canada Rocks written by Nick Eyles and published by Fitzhenry & Whiteside. This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the story of how the Canadian landmass evolved -- piece by piece -- from a long-lost continent some four billion years ago into one of the most spectacular and geologically significant areas on Earth.
Download or read book Toronto of To Day To Commemorate the Twelfth International Geological Congress Toronto written by International Geological Congress (12th and published by Palala Press. This book was released on 2018-02-18 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Toronto s Geology including History Biota and High Park written by Frank Remiz and published by . This book was released on 2012 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey of Canada Open File 1039 written by and published by Natural Resources Canada. This book was released on with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Proterozoic in Canada written by James E. Gill and published by . This book was released on 1957 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Cumulative Book Index written by and published by . This book was released on 1922 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Annotated Bibliography of the Quaternary Geology and History for the Don Valley Brickworks written by Ross Ian Kelly and published by Ontario Ministry of Northern Development and Mines, Mines and Minerals Division. This book was released on 1987 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Road Rocks Ontario written by Nicholas Eyles and published by . This book was released on 2013 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: The province of Ontario contains many sites of outstanding geological importance. Many are internationally well known and attract visitors from around the globe. Others no less important remain hidden in plain sight. During the last 3 billion years Ontario has been witness to giant tectonic collisions as North America collided in turn with South America and Africa creating huge mountains now long gone. Many of Ontario's northern rocks originated as magma on ancient ocean floors long before life flourished. The province has been dented by fiery meteorites, drifted across the equator, been flooded by tropical seas rich in marine life and scraped bare by ice sheets. Ontario's rich geologic history is illustrated here by short descriptions of more than 200 field sites ranging from Timmins in the north to Windsor in the south. These include the Sleeping Giant near Thunder Bay; Agawa Canyon; the Sudbury meteorite crater; Niagara Escarpment; the Falls and Gorge; numerous caves, the mineral-rich Bancroft area; and the high lakeshore cliffs at Scarborough Bluffs. Some sites are sacred to First Nations and are associated with spectacular rock art. Also included are sites from adjacent parts of Quebec such as the Monteregian Hills near Montreal, the Gatineau Hills at Ottawa and a few sites in New York State, all of which add to the story of the geological evolution of Ontario and all of which are all within easy driving distance from Ontario. Each site features a short summary of its significance and is depicted on a map with GPS coordinates. Take a drive through our geology and take a few moments to think of Ontario's long and varied history.
Download or read book Cumulated Index to the Books written by and published by . This book was released on 1915 with total page 878 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Geologic Story of Isle Royale National Park written by Norman King Huber and published by Avery Color Studios. This book was released on 1975 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
