Geology of Bear Island, with Special Reference to the Coal Deposits, and with an Account of the History of the Island PDF Download
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Author: Gunnar HORN (Geologist, and ORVIN (Anders Kristian))
Publisher:
ISBN:
Category :
Languages : en
Pages : 152
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Author: Gunnar HORN (Geologist, and ORVIN (Anders Kristian))
Publisher:
ISBN:
Category :
Languages : en
Pages : 152
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Author: Gunnar Horn
Publisher:
ISBN:
Category : Bear Island (Arctic Ocean)
Languages : en
Pages : 152
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Book Description
Author: Norsk polarinstitutt
Publisher:
ISBN:
Category : Arctic regions
Languages : en
Pages : 552
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Author:
Publisher:
ISBN:
Category : Arctic regions
Languages : en
Pages : 976
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Author: Arctic Institute of North America
Publisher:
ISBN:
Category : Arctic regions
Languages : en
Pages : 1520
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Author:
Publisher:
ISBN:
Category : Arctic regions
Languages : en
Pages : 542
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Author: Geological Society of London. Library
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 800
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Author: Alan Nairn
Publisher: Springer
ISBN: 1475712480
Category : Science
Languages : en
Pages : 684
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This trip backward in time capsulizes in a general way the geologic development of the area that is now northern Alaska. The Cretaceous through Recent history is predominantly one of erosion of the ancient Brooks Range and filling of the Colville Geosyncline under processes like those in Operation today. All the rocks older than Jurassic, however, were deposited far from their present sites. One of the intriguing tectonic puzzles involves the geographic positions and relative timing of events that occurred during the orogeny that built the Brooks Range. I suggest that pre-Cretaceous deposition took place far to the north along the western margin of the Caledonides. Subsequently, the region that is now northern Alaska moved southward and impinged upon a northward moving plate, or plates, from the Pacific region. Interactions between these two major parts of the earth's crust produced the Brooks Range during the Jurassic. Later developments reflect continuing readjustments of the northern third of of thrust Alaska as southward movement was dissipated in diverse systems faulting and lateral displacement. ACKNOWLEDGMENTS I am indebted to many colleagues who, during the past 30 years, shared with me the excitement and pleasures of exploring the geology of northern Alaska. Among these are W. P. Brosge, H. N. Reiser, R. L. Detterman, A. K. Armstrong, A. L. Bowsher, E. G. Sable, I. L. Tailleur, C. G. Mull, M. D. Mangus, A. H. Lachenbruch, M. C. Lachenbruch, R. L. Morris, C. J.
Author: National Research Council (U.S.). Highway Research Board
Publisher:
ISBN:
Category : Frost
Languages : en
Pages : 306
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Author: Kalervo Rankama
Publisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 472
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