Download or read book Geology of the Precambrian Superior and Grenville Provinces and Precambian Fossils in North America written by S.B. Lucas and published by Geological Society of America. This book was released on 1998 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains a description of the geology and mineral deposits of the Superior Province of the Canadian Shield, an overview of Grenville Province geology, and a synopsis of Precambrian fossil occurrences in North America. Six large plates include a geological map of Canada, geological map of the Grenville Province, lithotectonic map of the Superior Province, Archean mineral deposit map of the Superior Province, and more.
Download or read book Geological Survey of Canada Open File 2129 written by and published by Natural Resources Canada. This book was released on with total page 74 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 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Yukon Exploration and Geology written by and published by . This book was released on 1981 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1986 Annual Report on Alaska s Mineral Resources written by and published by . This book was released on 1986 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey of Canada Current Research Online no 2006 A6 written by and published by Natural Resources Canada. This book was released on with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Correlation of the North American Silurian Rocks written by William B. N. Berry and published by Geological Society of America. This book was released on 1970 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sedimentary Cover of the Craton in Canada written by D.F. Stott and published by Geological Society of America. This book was released on 1993 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: The early chapters of the volume present data and interpretations of the geophysics of the craton and summarise, with sequential maps, the tectonic evolution of the craton. The main body of the text and accompanying plates and figures present the stratigraphy, structural history, and economic geology of specific sedimentary basins and regions. The volume concludes with a summary chapter in which the currently popular theories of cratonal tectonics are discussed and the unresolved questions are identified.
Download or read book Geological Survey of Canada Open File 2169 written by and published by Natural Resources Canada. This book was released on with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regional Studies written by Bozzano G Luisa and published by Elsevier. This book was released on 2012-12-02 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Regional Studies is a collection of papers that deals with strata-bound mineral deposits in the Eastern Alps, in the Canadian Cordillera, in north-central, and southwest England. Other papers describe southern African stratiform ore deposits and the genesis of Irish base-metal deposits. One paper compares the various types of volcanogenic mineral deposits and their depositional environments characterized by distinct assemblages of volcanic rocks, which formed in the Northern Appalachians during certain episodes of the tectonic evolution. The paper notes that the youngest volcanogenic deposits of economic interest are tungsten—molybdenum—tin—bismuth base metal deposits in highly altered rhyolitic sub-volcanic complexes at Mount Pleasant, New Brunswick. Another paper reviews the mineral occurrences in southern Africa that include stratiform, non-magmatic, ore deposits, The paper considers a subdivision of deposits formed from surficial chemical processes during previous (or current) cycles of weathering and erosion. Many ore bodies have a dual origin: for example, the iron in the high-grade hematite deposits is partly syngenetic and partly epigenetic. The paper also illustrates the time-dependence of some stratiform ore deposits in southern Africa in a schematic diagram. Geologists, researchers, or engineers whose works are related with ore deposits and mining will benefit tremendously from the collection.
Download or read book Compaction of Coarse Grained Sediments I written by G.V. Chilingarian and published by Elsevier. This book was released on 1975-01-01 with total page 1365 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compaction of Coarse-Grained Sediments, I
Download or read book Earth s Pre Pleistocene Glacial Record written by M. J. Hambrey and published by Cambridge University Press. This book was released on 2011-04-14 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this 1981 substantial work, M. J. Hambrey and W. B. Harland have assembled essays by leaders in the field of pre-Pleistocene glacial research. The work's various chapters review in depth the glacial records of Africa, Antarctica, Asia, Australasia, Europe, and North and South America.
Download or read book Precambrian of the Northern Hemisphere written by and published by Elsevier. This book was released on 2011-08-26 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precambrian of the Northern Hemisphere
Download or read book FOSSIL RECORD 8 written by Spencer G. Lucas and published by New Mexico Museum of Natural History and Science. This book was released on 2022-08-02 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proterozoic Crustal Evolution written by K.C. Condie and published by Elsevier. This book was released on 1993-02-03 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a final product of the International Geological Correlation Program (IGCP) Project 217, this volume brings together significant advances in the understanding of Proterozoic crustal evolution. This IGCP Project focussed on nine research objectives: 1) Comparison of Archean and Proterozoic supracrustal assemblages to more fully understand differences between Archean and post-Archean tectonic regimes; 2) To more fully understand the geochemical differences between Archean and post-Archean sediments and to evaluate the various factors that control sediment composition; 3) From combined U/Pb zircon and whole-rock Sm/Nd studies, to see if the apparent 2.4-2.0 continental crust "generation gap" is real; 4) To employ new techniques in the dating of individual zircons to more fully understand Proterozoic tectonic history and the role of crustal reworking; 5) From trace element ratios and Nd isotopic data from basalts, to better understand Proterozoic mantle evolution; 6) To encourage more detailed studies of the anorogenic granite-anorthosite association to better understand its origin and significance in terms of crustal evolution; 7) From combined Nd, Pb, and Sr isotopic data, to more precisely estimate the amount of new continental crust formed during the Proterozoic; 8) To encourage joint P-T and geochronological studies of Proterozoic and high-grade terranes to better understand Proterozoic orogenesis: and 9) To try and understand why hydrothermal precious metal deposits are relatively rare in the Proterozoic compared to both the Archean and the Phanerozoic. The book should be of interest to professionals in the geosciences (especially geochemists, petrologists and structural geologists) and graduate students in the same fields.
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.
