Ontario Rocks: Three Billion Years of Environmental Change

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 Rockstells 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 withglobal 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 Rocksconcludes 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 Rocksis a highly accessible sourcebook, perfect for students and all thoseintrigued by the history and formation of the land under us.Nick Eyles is the author of 'Ontario Rocks: Three Billion Years of Environmental Change', published 2002 under ISBN 9781550416190 and ISBN 1550416197.