Recent Advances In Understanding Precambrian Gold Deposits
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Recent Advances In Understanding Gold Deposits
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Author : T. Torvela
language : en
Publisher: Geological Society of London Special Publications
Release Date : 2022-12-06
Recent Advances In Understanding Gold Deposits written by T. Torvela and has been published by Geological Society of London Special Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-06 with Science categories.
Gold occurs in many settings, but the dynamic nature of Earth’s crust means overlapping and overprinting deposit styles are common. Characterization of mineralization from an early stage becomes important, particularly where the mineralization is complex, in order to maximize exploration and project development success and mining productivity. Various techniques are used at different stages of a project to characterize gold deposits. This Special Publication offers a cross-section of some specific techniques used to investigate a variety of gold deposit types. The papers highlight both the breadth of the available techniques and their utility in deposit characterization, but also the many significant remaining questions and problems related to the exploration and research of gold deposits. Several papers include suggestions of avenues for fruitful further research, including a paper discussing a new approach to classifying orogenic gold deposits, and a paper describing archaeological applications of natural gold analyses.
Recent Advances In Understanding Precambrian Gold Deposits
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Author : University of Western Australia. Department of Geology
language : en
Publisher:
Release Date : 1987
Recent Advances In Understanding Precambrian Gold Deposits written by University of Western Australia. Department of Geology and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Geology, Stratigraphic categories.
Advances In Understanding Precambrian Gold Deposits
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Author : Susan E. Ho
language : en
Publisher:
Release Date : 1988
Advances In Understanding Precambrian Gold Deposits written by Susan E. Ho and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Geology categories.
Potassic Igneous Rocks And Associated Gold Copper Mineralization
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Author : Daniel Müller
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Potassic Igneous Rocks And Associated Gold Copper Mineralization written by Daniel Müller and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Potassic igneous rocks have gained much attention among petrologists worldwide, mainly due to their distinct geochemistry, and many geoscientists still consider them as petrological curiosities with an obscure petrogenesis. In the past, a plethora of genetic hypotheses and of local names for potassic igneous rocks from different localities have been created. This has produced some confusion in the literature. This book reviews the geochemical and petrological characteristics of the potassic igneous rock complexes and investigates the different tectonic settings in which these rocks occur. The authors provide an overview and a classification of these rocks and attempt to elucidate the geochemical differences between barren and mineralized potassic igneous complexes. Many epithermal gold and porphyry copper-gold deposits are hosted by high-K rocks. Therefore, this book is not only relevant to academic petrologists working on alkaline rocks, but also to exploration geologists prospecting for epithermal gold and/or porphyry copper-gold deposits in modern and ancient terranes. This third, updated and enlarged edition contains several new sections, new geochemical data and additional references.
The Metallogeny Of Lode Gold Deposits
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Author : Ulrich Kretschmar
language : en
Publisher: Elsevier
Release Date : 2015-11-24
The Metallogeny Of Lode Gold Deposits written by Ulrich Kretschmar and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-11-24 with Science categories.
The Metallogeny of Lode Gold Deposits: A Syngenetic Perspective is a synthesis of lode gold vein forming processes, addressing the commonality in similar worldwide deposits. The book’s empirical model incorporates widely known and accepted principles of ore deposition and shows how it applies in the volcanic-sedimentary greenstone belt environment. Several chapters detail outcrop maps and photos of field occurrences and textures. The interpretations flow directly from the authors’ field work, and are coupled with analyses of underlying physical processes. Utilizing detailed geological mapping, field work, and chemical analyses as the basis of a syngenetic formation mode, the text arms readers with the tools necessary to accurately analyze and interpret new data on the subject. This includes information on decoding the significance of asymmetry in vein formation, as well as the role of lamprophyres in gold camps, how Archean geology requires integration into a lode vein formation model, and how to develop an understanding of the worldwide applicability of gold cycles to lode vein formation and exploration and how it can be applied to deposits of all ages. Presents the first book to galvanize lode gold research into a single authoritative reference Simplifies the complexity of lode gold’s underlying processes and presents valid concepts surrounding the lode gold forming environment Features color figures, illustrations, and photos that enrich the content’s focus and aid in the retention of key concepts
Early Precambrian Basic Magmatism
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Author : R.P. Hall
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Early Precambrian Basic Magmatism written by R.P. Hall and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Basic magmatic rocks make up approximately three-quarters of the crust ofthe present day Earth. Because we can observe and study the volcanic products of present day tectonic regimes comprehensively, we can shed light on ancient tectono-magmatic provinces, and thereby deduce the petrogenesis and evolution of the oldest basic rocks. This is the primary objective of this book. The book was conceived in order to provide a comprehensive review of the basic rocks produced during the first half of the Precambrian, i.e. the Archaean and early Proterozoic, to about 1.8 Ga years ago. Two major questions are addressed. First, what basic magmas were generated during the early Precambrian: were these magmas globally uniform, and to what extent were prevailing tectonic controls and compo sitions analogous to those of the present day? Clearly, this can be answered only by bringing together fundamental information about all relevant basic magmatic events. Second, is there any systematic temporal variation in the nature of basic suites, and what implications might such variations have on our interpretations of early Earth history? Are there important differences between early Archaean, late Archaean, Proterozoic and modern basic magmatic suites? The book uses two approaches to address these questions. Early chapters examine the fundamental characteristics of these basic rocks, whilst later chapters assess regional distribution and development by providing an overview of each major early Precambrian craton.
Facies Models In Exploration And Development Of Hydrocarbon And Ore Deposits
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Author : Arnold H. Bouma
language : en
Publisher: VSP
Release Date : 1991-06
Facies Models In Exploration And Development Of Hydrocarbon And Ore Deposits written by Arnold H. Bouma and has been published by VSP this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-06 with Science categories.
Exploration of natural resources is becoming more and more expensive. This means that more scientific approaches are needed using the best techniques available. However, no single technique can cover any of the objectives. Regional approaches, necessary to outline a prospective area, lack the detail required for exploration; detailed methods and techniques lack proper overview. A combination of both types of approaches and several techniques within are required to do optimal exploration. This book provides a number of examples (models) of different approaches and styles from different parts of the world, giving the reader not only new information but also a view of how different countries emphasize their exploration.
Applied Geochemistry
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Author : Athanas S. Macheyeki
language : en
Publisher:
Release Date : 2020-02-14
Applied Geochemistry written by Athanas S. Macheyeki and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-02-14 with Geochemical prospecting categories.
Applied Geochemistry: Advances in Mineral Exploration Techniques is a book targeting all levels of exploration geologists, geology students and geoscientists working in the mining industry. This reference book covers mineral exploration techniques from multiple dimensions, including the application of statistics - both principal component analysis and factor analysis - to multifractal modeling. The book explains these approaches step-by-step and gives their limitations. In addition to techniques and applications in mineral exploration, Applied Geochemistry describes mineral deposits and the theories underpinning their formation through worldwide case studies. Includes both conventional and nonconventional techniques for mineral exploration, including lithogeochemical methods Highlights the importance and applications of multifractal models, 3D - mineral prospectivity modeling Features case studies from mines and mineral exploration ventures around the world
Developments In Mineral Deposit Modeling
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Author :
language : en
Publisher:
Release Date : 1992
Developments In Mineral Deposit Modeling written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Mines and mineral resources categories.
A Regional Structural Model For Gold Mineralization In The Southern Part Of The Archean Superior Province United States
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Author : Paul Kibler Sims
language : en
Publisher:
Release Date : 1992
A Regional Structural Model For Gold Mineralization In The Southern Part Of The Archean Superior Province United States written by Paul Kibler Sims and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Geology, Stratigraphic categories.
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