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Late Archean Rock Types And Controls On Gold Mineralization In The Southern Abitibi Greenstone Belt Of Ontario
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Book Synopsis A Regional Structural Model for Gold Mineralization in the Southern Part of the Archean Superior Province, United States by : Paul Kibler Sims
Download or read book A Regional Structural Model for Gold Mineralization in the Southern Part of the Archean Superior Province, United States written by Paul Kibler Sims and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Canadian segment of the Archean Superior province is a major world source of lode gold. The gold deposits occur in or near regional transcurrent and oblique slip-shear deformation zones that comprise a conjugate set to a northwest- directed compression of the Superior province. These structures provided permeable pathways for the flow of large volumes of auriferous fluid derived from an external source. Historic gold production from the United States segment of the Superior province is modest, but the close similarity in the geologic environment of the United States and Canadian segments suggests that large gold deposits should be present in the U.S.A. An occurrence model largely based on known parameters of gold mineralization in Canada suggests that the greenstone-granite terranes of the Wawa and Wabigoon sub-provinces in the United States are favorable for important gold deposits. The model suggests that gold mineralization took place during or later than the transcurrent faulting and that it took place contemporaneously with emplacement of silica-undersaturated intrusions. The faulting occurred late in the igneous-tectonic history of the Superior province, about 2,690 Ma. Extensive, intense alteration comprising carbonitization, silicification, and sulfidization accompanied the gold mineralization. The relationships between alteration minerals and mineralized veins suggest a close temporal relationship between the alteration and gold mineralization processes. The proposed occurrence model for gold mineralization and the available data suggest that two broad regions of greenstone in the Archean Superior province in north-central United States are particularly favorable for gold deposits: (1) the Upper Peninsula of Michigan, and (2) northeastern Minnesota. The Ishpeming greenstone belt of the Wawa subprovince in Michigan contains the important Ropes deposit and several other known gold occurrences, and the Vermilion district (Wawa subprovince) in northeastern Minnesota contains highly anomalous gold in soils and minor known bedrock occurrences. Transcurrent faults in both areas should be favorable sites for gold mineralization
Book Synopsis Geology of the Precambrian Superior and Grenville Provinces and Precambian Fossils in North America by : S.B. Lucas
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.
Book Synopsis Economic Geology and the Bulletin of the Society of Economic Geologists by :
Download or read book Economic Geology and the Bulletin of the Society of Economic Geologists written by and published by . This book was released on 2008 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Geological Survey Bulletin by :
Download or read book U.S. Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geological Development, Gold Mineralization and Exploration Methods in the Late Archean Hattu Schist Belt, Ilomantsi, Eastern Finland by : Pekka A. Nurmi
Download or read book Geological Development, Gold Mineralization and Exploration Methods in the Late Archean Hattu Schist Belt, Ilomantsi, Eastern Finland written by Pekka A. Nurmi and published by . This book was released on 1993 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Economic Geology written by and published by . This book was released on 2009 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Archean Base and Precious Metal Deposits, Southern Abitibi Greenstone Belt, Canada by : Thomas Monecke
Download or read book Archean Base and Precious Metal Deposits, Southern Abitibi Greenstone Belt, Canada written by Thomas Monecke and published by . This book was released on 2017 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Abitibi greenstone belt of eastern Canada represents the world's largest Neoarchean terrane of supracrustal rocks. Straddling the border between the provinces of Ontario and Quebec, the belt covers an area that is approximately 700 km from southeast to northwest and 350 km from north to south. The belt is comprised of several major east-trending successions of folded volcanic and sedimentary rocks, with intervening intrusions. The supracrustal rocks of the Abitibi greenstone belt are uniquely well preserved and have mostly been overprinted only at a low metamorphic grade, allowing the study of primary geological relationships.
Book Synopsis Geochemistry of Gold Deposits in the Abitibi Greenstone Belt by : R. Kerrich
Download or read book Geochemistry of Gold Deposits in the Abitibi Greenstone Belt written by R. Kerrich and published by . This book was released on 1983 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Geological Survey Bulletin by : Paul Kibler Sims
Download or read book U.S. Geological Survey Bulletin written by Paul Kibler Sims and published by . This book was released on 1983 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Early Proterozoic Michigamme Formation of northern Michigan was deposited in the southeastern part of the Animikie basin. The formation conformably overlies the Goodrich Quartzite and comprises three widespread members a lower member of thin-bedded shale, siltstone, and sandstone; the Bijiki Iron-formation Member; and an upper member of tur- biditic graywacke, siltstone, and mudstone and a few local members. The Goodrich Quartzite is interpreted as having been deposited in a tidally influenced shallow marine environ- ment. The lower member of the Michigamme is interpreted as having been deposited in a tidally influenced environment, the iron-formation member as having been deposited below wave base in somewhat deeper water, and the upper member as having been deposited in still deeper water with turbidity currents being a major depositional mechanism. Several lines of evidence including paleocurrents, paleo- geographic setting, and neodymium isotopes suggest that the graywacke of the southern part of the outcrop area was derived from the south (Early Proterozoic Wisconsin magmatic terranes, Archean miniplates, and older Early Proterozoic sedimentary units formed on the continental margin), and that the graywacke in the northern area was derived from an Archean terrane to the north. The tectonic model that best fits the available data is a northward-migrating foreland basin.
Book Synopsis Canadian Journal of Earth Sciences by :
Download or read book Canadian Journal of Earth Sciences written by and published by . This book was released on 2014 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Archean Lode Gold Deposits in Ontario by : A. C. Colvine
Download or read book Archean Lode Gold Deposits in Ontario written by A. C. Colvine and published by . This book was released on 1988 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Susanne Janita Henriët Buiter Publisher :Geological Society of London ISBN 13 :9781862391918 Total Pages :462 pages Book Rating :4.3/5 (919 download)
Book Synopsis Analogue and Numerical Modelling of Crustal-scale Processes by : Susanne Janita Henriët Buiter
Download or read book Analogue and Numerical Modelling of Crustal-scale Processes written by Susanne Janita Henriët Buiter and published by Geological Society of London. This book was released on 2006 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: The crust of the Earth records the deformational processes of the inner Earth and the influence of the overlying atmosphere. The state of the Earth's crust at any time is therefore the result of internal and external processes, which occur on different time and spatial scales. In recent years important steps forward in the understanding of such complex processes have been made by integrating theory and observations with experimental and computer models. This volume presents state-of-the-art analogue and numerical models of processes that alter the Earth's crust. It shows the application of models in a broad range of geological problems with careful documentation of the modelling approach used. This volume contains contributions on analogue and numerical sandbox models, models of orogenic processes, models of sedimentary basins, models of surface processes and deformation, and models of faults and fluid flow.
Book Synopsis The Geology of Gold Deposits by : Reid R. Keays
Download or read book The Geology of Gold Deposits written by Reid R. Keays and published by . This book was released on 1989 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes detailed and technical discussions of deposits in Canada, Zimbabwe, South Africa, Australia, Chile, United States, Japan, and Czechoslovakia.
Book Synopsis When Did Plate Tectonics Begin on Planet Earth? by : Kent C. Condie
Download or read book When Did Plate Tectonics Begin on Planet Earth? written by Kent C. Condie and published by Geological Society of America. This book was released on 2008-01-01 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Inspired by a GSA Penrose Conference held in Lander, Wyoming, June 14-18, 2006, this volume discusses the beginning and evolution of plate tectonics on Earth, and gives readers an introduction to some of the uncertainties and controversies related to the evolution of the planet. In the first three sections of the book, which cover isotopic, geochemical, metamorphic, mineralization, and mantle geodynamic constraints, a variety of papers address the question of when "modern-style" plate tectonics began on planet Earth. The next set of papers focuses on the geodynamic or geophysical constraints for the beginning of plate tectonics. The volume's final section synthesizes a broad range of evidence, from planetary analogues and geodynamic modeling, to Earth's preserved geologic record. This work provides an excellent graduate level text summarizing the current state of knowledge and will be of interest to a wide range of earth and planetary scientists."--Publisher's website.
Book Synopsis Abstracts of Papers by : Geological Association of Canada. Meeting
Download or read book Abstracts of Papers written by Geological Association of Canada. Meeting and published by . This book was released on 1998 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mineral Frontiers on Indian Lands by :
Download or read book Mineral Frontiers on Indian Lands written by and published by . This book was released on with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ontario Geological Survey Miscellaneous Paper by : Ontario Geological Survey
Download or read book Ontario Geological Survey Miscellaneous Paper written by Ontario Geological Survey and published by . This book was released on 1976 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
