Author: R. A. Frith
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 54
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Book Description
During the course of regional mapping of the Indin Lake area, a number of gneiss domes were discovered just west of Arseno Lake. Further study of the domes led to remapping at a 1:50,000 scale, an analysis of the structure of the domes in detail and a study of metamorphic assemblages present in the paragneiss of the region being conducted using microprobe techniques. This report summarizes the work to date, including older structural studies along the Slave Province boundary. The regional tectonism is reinterpreted in light of the more recent ideas brought forward by mapping the Wopmay Orogen.
Author: R. A. Frith
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 80
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Book Description
This memoir outlines the geology of an area that straddles the western margin of the Slave Structural Province and thus encompasses a small part of Wopmay Orogen.
Author: John B. Henderson
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 136
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Book Description
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.
Author: Wladyslaw Altermann
Publisher: John Wiley & Sons
ISBN: 1444304321
Category : Science
Languages : en
Pages : 464
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Book Description
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
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1134
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Author: A. Kröner
Publisher: Elsevier
ISBN: 0080869033
Category : Science
Languages : en
Pages : 805
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Precambrian Plate Tectonics
Author: Geological Survey of Canada
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 618
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Author: Ulrich Mayr
Publisher:
ISBN: 9780660174686
Category : Devon Island (Nunavut)
Languages : en
Pages : 742
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Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1128
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Book Description
1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 570
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Book Description
