Cameron River And Beaulieu River Volcanic Belts Of The Archean Yellowknife Supergroup District Of Mackenzie Northwest Territories
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Cameron River And Beaulieu River Volcanic Belts Of The Archean Yellowknife Supergroup District Of Mackenzie Northwest Territories
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Author : M. B. Lambert
language : en
Publisher: Geological Survey of Canada
Release Date : 1988
Cameron River And Beaulieu River Volcanic Belts Of The Archean Yellowknife Supergroup District Of Mackenzie Northwest Territories written by M. B. Lambert and has been published by Geological Survey of Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Nature categories.
Archean greenstone belts host gold deposits in many areas of the Canadian Shield. The Yellowknife area has been a major gold producer and an active area for exploration since the early 1930s. This report documents the stratigraphy, structure and volcanology of polydeformed and metamorphosed Archean volcanic belts that border the eastern side of the Yellowknife supracrustal basin. The eruption processes, history of the development and paleoenvironment of the enormous volcanoes that erupted mainly beneath oceans more than 2600 Ma ago are unravelled.
Precambrian Ophiolites And Related Rocks
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Author : T.M. Kusky
language : en
Publisher: Elsevier
Release Date : 2004-10-26
Precambrian Ophiolites And Related Rocks written by T.M. Kusky and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-10-26 with Science categories.
Recent developments have shown that many full and partial ophiolites are preserved in Precambrian cratons. This book provides a comprehensive description and discussion of the field aspects, geochemistry, geochronology and structure of the best of these ophiolites. It also presents syntheses of the characteristics of ophiolites of different ages, and an analysis of what the characteristics of these ophiolites mean for the thermal and chemical evolution of the earth. This title emphasizes new studies of Precambrian Geology that have documented ophiolites, ophiolitic fragments, and ophiolitic melanges in many Precambrian terranes. Each chapter focuses on individual Precambrian ophiolites or regions with numerous Precambrian ophiolites, and covers field aspects, petrology, geochemistry, geochronology, and other descriptive aspects of these ophiolites, it also delves into more theoretical and speculative aspects about the interpretation of the significance of these ancient ophiolites.
Geological Survey Of Canada Open File 2168
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Author :
language : en
Publisher: Natural Resources Canada
Release Date :
Geological Survey Of Canada Open File 2168 written by and has been published by Natural Resources Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Geological Survey Of Canada Open File 2484
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Author :
language : en
Publisher: Natural Resources Canada
Release Date :
Geological Survey Of Canada Open File 2484 written by and has been published by Natural Resources Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Archean Crustal Evolution
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Author : K.C. Condie
language : en
Publisher: Elsevier
Release Date : 1994-11-11
Archean Crustal Evolution written by K.C. Condie and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-11-11 with Science categories.
The integration of Tectonics/Geochemistry, up-to-date reviews by leading scientists as well as a broad topical coverage of the Archean, are some of the features of this particular volume. As geochronology has progressed in the last 20 years, the Archean has continued to attract interest. Advancements in the understanding of Archean crustal and mantle evolution have progressed rapidly since the first International Archean Symposium in Western Australia (1970). The landmark for the Archean was the NATO Advanced Study Institute at Leicester (1975). At this meeting the Archean truly "came of age". Investigators from many different disciplines focused their expertise on the early history of the earth. For the first time, the nature of the atmosphere, oceans, and life during the Archean was an important part of an Archean symposium. During the most recent Archean Symposium in Perth in 1990, there was a shift in interest from field and trace element data to the new rapidly evolving high-precision U/Pb geochronology of Archean rocks and to detailed structural studies of both low and high grade Archean terrains. The terrane concept so widely applied to the Phanerozoic was proposed for the Archean Yilgarn Province in Western Australia and is now widely accepted for the Archean (as evident by the articles in this book). Plate tectonics is now widely accepted as the principal process that controls the history of continents and oceans. There are, though, well substantiated differences between Archean and post-Archean rocks that indicate that Archean tectonic regimes must have differed in some respects from modern ones. The question of how and to what degree did Archean plate tectonics differ from modern plate tectonics is treated in many of the chapters of this book. Altogether, the editor has presented a selection of articles that provide a fascinating insight into the latest observations in this field.
Geological Survey Of Canada Open File 3600
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Author :
language : en
Publisher: Natural Resources Canada
Release Date :
Geological Survey Of Canada Open File 3600 written by and has been published by Natural Resources Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Precambrian Sedimentary Environments
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Author : Wladyslaw Altermann
language : en
Publisher: John Wiley & Sons
Release Date : 2009-03-05
Precambrian Sedimentary Environments written by Wladyslaw Altermann and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-03-05 with Science categories.
The motivation for this volume came from the idea that thePrecambrian is the key, both to the present, and to theunderstanding of the Earth as a whole. The Precambrian constitutesabout 85% of Earth's history, and of that, about 3.75 billion yearsof Precambrian time, represented by rocks, are accessible togeoscientists. Ancient atmospheric and environmental conditions canbe traced back to the time when the Earth was only about 250million years old. Precambrian rocks supply almost 75% of importantmineral resources such as Fe, Mn, Au, Pt and Cr. Many of theseelements are associated with sedimentary rocks and some importanthydrocarbon, coal and graphite deposits are also hosted byPrecambrian rocks. This volume is aimed at geoscientists interested in Precambriansedimentary rocks and at students of Earth history. It containsreview articles discussing Precambrian conditions and case studiesfrom Precambrian shields and successions of North and SouthAmerica, Australia, Africa, Europe, Asia and India. Theintroductory papers, written by experts on Precambrianenvironments, treat comprehensively the application of actualism tothe Precambrian, the evolution and influence of life on thesedimentary rock record, the genesis of Banded Iron Formations, thePrecambrian sulphur cycle and the significance of Precambrianchemical carbonate precipitates. The case studies includedepositional settings and processes in Archean terranes, inPaleoproterozoic sequences, with some emphasis on the lack ofvegetation and weathering, and in late Proterozoic sequences, withsome emphasis on glacial deposits. The contributions demonstratethat Precambrian sedimentary deposits are commonly similar to theirPhanerozoic counterparts in terms of composition, sedimentaryprocesses, and depositional setting, but may differ significantlyas a result of lack of vegetation, climatic and biologicalconstraints, composition and circulation of seawater, and thesecular involvement of continental crust. Contains review articles discussing Precambrian conditions andcase studies from Precambrian shields and successions of North andSouth America, Australia, Africa, Europe, Asia and India. The introductory papers, written by experts on Precambrianenvironments, treat comprehensively the application of actualism tothe Precambrian, the evolution and influence of life on thesedimentary rock record, the genesis of Banded Iron Formations, thePrecambrian sulphur cycle and the significance of Precambrianchemical carbonate precipitates. Detailed case studies include depositional settings andprocesses in Archean terranes, in Paleoproterozoic sequences, withsome emphasis on the lack of vegetation and weathering, and in lateProterozoic sequences, with some emphasis on glacialdeposits. Written for geoscientists interested in Precambrian sedimentaryrocks and students of Earth history. If you are a member of the International Association ofSedimentologists (IAS), for purchasing details, please see:http://www.iasnet.org/publications/details.asp?code=SP33
Geology Of The Keskarrah Bay Area District Of Mackenzie Northwest Territories
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Author : John B. Henderson
language : en
Publisher:
Release Date : 1998
Geology Of The Keskarrah Bay Area District Of Mackenzie Northwest Territories written by John B. Henderson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Geology categories.
Describes the geology of an area in west central Slave Province, Northwest Territories, where the Archean supracrustal rock record is unusually well preserved and complete. Regional geological mapping of the area, an important host of gold and base metal deposits, provides a framework for examining and understanding the geological evolution of this region that may well apply elsewhere in the Slave Province. The area comprises two domains with highly contrasting structural levels, separated by a major north-trending ductile shear zone. The report provides a description and interpretation of deformed and variably metamorphosed sedimentary and volcanic rocks and of their intrusions, and contains sections on the area's Quaternary geology, structural geology, metamorphic geology, and economic geology.
Canadian Journal Of Earth Sciences
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Author :
language : en
Publisher:
Release Date : 2005
Canadian Journal Of Earth Sciences written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Geology categories.
Mineral Industry Report
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Author :
language : en
Publisher:
Release Date : 1988
Mineral Industry Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Geology categories.