Download or read book Age Determinations and Geological Studies K Ar Isotopic Ages Report 9 written by R. K. Wanless and published by . This book was released on 1970 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Professional Paper written by and published by . This book was released on 1977 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Age Determinations and Geological Studies K Ar Isotopic Ages Report 15 written by R. D. Stevens and published by . This book was released on 1982 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Two hundred and eight potassium-argon age determinations carried out on Canadian rocks and minerals are reported. Each age determination is accompanied by a description of the rock and mineral concentrate used: brief interpretative comments regarding the geological significance of each age are also provided where possible. The experimental procedures employed are described in brief outline and the constants used in the calculation of ages are listed. Two geological time-scales are reproduced in tabular form for ready reference and an index of all Geological Survey of Canada K-Ar age determinations published in this format has been prepared using NTS quadrangles as the primary reference." --
Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1967 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics and Chemistry of the Earth written by L. H. Ahrens and published by Elsevier. This book was released on 2013-10-22 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physics and Chemistry of the Earth, Volume VII focuses on three topics—orogenic fold-belts and a hypothesis of earth evolution; earthquake energy and magnitude; and meteoritic, solar, and terrestrial rare-earth distributions. This book consists of three chapters. Chapter 1 examines features of the distribution and history of the Precambrian fold-belts in relation to the theory of continental drift. The two kinds of information obtained from seismograph records—time readings and amplitude readings that provide information on the total seismic wave energy released in earthquakes—are elaborated in Chapter 2. Chapter 3 discusses the meteoritic and terrestrial matter in rare earth elements (REE). This publication is a good reference to students and researchers conducting work on earth science.
Download or read book The Acadian Orogeny written by David C. Roy and published by Geological Society of America. This book was released on 1993 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Studies of Archean Gneisses and Lower Proterozoic Rocks Southern Canadian Shield written by G. B. Morey and published by Geological Society of America. This book was released on 1980 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Circular written by and published by . This book was released on 1984 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of the Innuitian Orogen and Arctic Platform of Canada and Greenland written by H.P. Trettin and published by Geological Society of America. This book was released on 1991 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fourteen chapters discuss regional stratigraphy by time intervals from Precambrian to Quaternary, while other chapters describe the geography, geomorphology, tectonics, geophysical characteristics, and resources of the region. A summary chapter includes geologic maps, structural cross-sections, a geotectonic correlation chart, a gravity map, and a location map for exploration wells in the Arctic Islands and northern Greenland. A wealth of additional information is contained on the nine accompanying plates.
Download or read book The Arctic Ocean written by Alan Nairn and published by Springer. This book was released on 2013-11-22 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Bulletin written by Geological Survey of Canada and published by . This book was released on 1950 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1984 Annual Report on Alaska s Mineral Resources written by and published by . This book was released on 1984 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: Short papers describing results of recent geologic investigations.
Download or read book Geological Survey Professional Paper written by Geological Survey (U.S.) and published by . This book was released on 1977 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology and Recognition Criteria for Uranium Deposits of the Quartz pebble Conglomerate Type written by A. Button and published by . This book was released on 1980 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The United States Geological Survey in Alaska written by and published by . This book was released on 1985 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Short papers describing results of recent geologic investigations.
Download or read book Proceedings of the Second U S Geological Survey Workshop on the Early Mesozoic Basins of the Eastern United States written by and published by . This book was released on 1985 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proterozoic Geology written by L. Gordon Medaris and published by Geological Society of America. This book was released on 1983 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
