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Author : A. C. Colvine
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (62 download)
Download or read book An Integrated Model for the Origin of Archean Lode QGS Gold Deposits written by A. C. Colvine and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. C. Colvine
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (319 download)
Download or read book An Integrated Model for the Origin of Archean Lode Gold Deposits written by A. C. Colvine and published by . This book was released on 1984 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (921 download)
Download or read book Archaean Lode Gold Deposits of Canada. Part 2 : Characteristics of the Hydrothermal Systems, and Models of Origin written by and published by . This book was released on 1986 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paul Kibler Sims
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.3/5 (91 download)
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
Author : R. Kerrich
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (871 download)
Download or read book Archaean Lode Gold Deposits of Canada: Characteristics of the hydrothermal systems, and models of origin written by R. Kerrich and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ulrich Kretschmar
Publisher : Elsevier
ISBN 13 : 0128032235
Total Pages : 356 pages
Book Rating : 4.1/5 (28 download)
Download or read book The Metallogeny of Lode Gold Deposits written by Ulrich Kretschmar and published by Elsevier. This book was released on 2015-11-24 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Author : J. H. Tatsch
Publisher :
ISBN 13 :
Total Pages : 302 pages
Book Rating : 4.:/5 (45 download)
Download or read book Gold Deposits written by J. H. Tatsch and published by . This book was released on 1975 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ping Liu
Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.:/5 (266 download)
Download or read book The Origin of the Archean Jardine Iron Formation-hosted Lode Gold Deposit, Montana written by Ping Liu and published by . This book was released on 1992 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Abdalla K. Musallam
Publisher :
ISBN 13 :
Total Pages : 194 pages
Book Rating : 4.:/5 (89 download)
Download or read book Fluid Inclusions and Archean Lode Gold, Lake of the Woods, Ontario, Canada written by Abdalla K. Musallam and published by . This book was released on 1989 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (933 download)
Download or read book Archean Lode Gold Deposits in Ontario written by and published by . This book was released on 1988 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the 4 years since the publication of a preliminary version of this report, extensive new descriptive data on Archean lode gold deposits has been generated and research into the genesis of gold deposits has also increased. Part I expands on the premise discussed in Colvine et al. (1984) that most, if not all, Archean lode gold deposits and mining camps are drawn together into a composite depositional model which attempts to explain the variability in many of the inherent characteristics of gold deposits by the interaction of a defined set of fundamental geological variables. Part II discussed the more fundamental problems of where gold came from and how it was transported into its depositional sites and examines the crustal scale processes which were temporarily related to the gold mineralizing event.
Author : James P. Siddorn
Publisher :
ISBN 13 : 9780494776391
Total Pages : 662 pages
Book Rating : 4.7/5 (763 download)
Download or read book The Giant-Con Gold Deposit: A Once-linked Archean Lode-gold System written by James P. Siddorn and published by . This book was released on 2011 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Giant and Con deposits, Yellowknife, Northwest Territories, represent a classic Archean lode-gold deposit now offset by a major Proterozoic fault (West Bay Fault). The link between the Giant and Con deposits is supported by their similarities. However, there are distinct differences between the two deposits in terms of the offset of stratigraphy, response to D2 deformation, geometry, gold mineralization styles, and depth of gold mineralization.D3 reactivation of the deformation zones (probably related to the end of the D2 compressive event) caused local reactivation of structures and is not associated with gold mineralization.D4 Proterozoic faulting offset and segmented the two deposits, including the major offset by the West Bay Fault. A new reconstruction of the West Bay Fault shows that the Con deformation zone is the down dip extension of the Giant deposit and not the Campbell deformation zone as previously thought.Gold mineralization in the Giant-Con system formed over a protracted history of deformation and hydrothermal activity. Early D1 extension resulted in offset and excision of stratigraphy and the formation of refractory gold mineralization within strongly deformed schistose zones and quartz-carbonate veins. The main D2 deformation in the district resulted in the strong overprint of D1 refractory gold mineralization and was associated with the northwest-southeast flattening of the Giant deposit and progressive reverse-dextral shear of the Con deposit. Free-milling gold mineralization is associated with the D2 event, forming deeper in the Giant-Con system, creating a vertical zonation of free-milling quartz-carbonate veins overprinting earlier refractory gold mineralization that formed higher in the system.Ore plunge in the Giant deposit is controlled by the interaction of the original geometry of D1 deformation zones with the effects of D2 flattening. Ore plunge in the Con deposit is controlled by the orientation of F2 fold and B2 boudin axes in auriferous quartz-carbonate veins.
Author : Xiaohui Zhou
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (988 download)
Download or read book Stratigraphy, Structure and Geochronology of Archean Lode Gold Deposits in the Southeastern Rice Lake Greenstone Belt, Southeast Manitoba written by Xiaohui Zhou and published by . This book was released on 2017 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Central Manitoba mine trend is one of the most important lode gold camps in the Rice Lake greenstone-granitoid belt of the western Uchi Subprovince within the western Superior Province, Manitoba, Canada. Neoarchean host rocks consist of a south-facing volcano-sedimentary succession (2.75-2.73 Ga) intruded by voluminous gabbroic sills and tonalitic-granodioritic plutons (2.73-2.72 Ga), as well as late aplite dikes (2.73-2.72 Ga) and quartz-feldspar porphyry dikes (2.73-2.71 Ga). Five generations of deformation structures have been recognized through detailed geological mapping. The entire succession was folded during early deformation prior to rare late aplite dike emplacement. All fault-fill veins and extension veins cut all lithologic units, and are structurally governed by late conjugate shear zones. Main gold mineralization occurs within fault-fill veins hosted by west-trending steeply-dipping dextral brittle-ductile and ductile shear zones, which occur along or across contacts of metabasalt, metagreywacke and metagabbro or entirely within metagabbro. Microstructural and paragenetic analyses on main gold-bearing veins have revealed that gold is intimately associated with quartz, pyrrhotite and tellurobismuthite. Main gold introduction is interpreted to have taken place contemporaneously with pyrrhotite and tellurobismuthite deposition early during dextral shearing. The Ogama-Rockland gold deposit consists of shear zone-associated quartz veins hosted by the Ross River pluton, a ca. 2728-2724 Ma tonalitic-granodioritic intrusion in supracrustal rocks (
Author : Rainer Alexander Skeries
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (16 download)
Download or read book An Archean lode gold deposit on Point Lake, N.W.T., Canada written by Rainer Alexander Skeries and published by . This book was released on 1976 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Meyer
Publisher :
ISBN 13 : 9780854948529
Total Pages : 22 pages
Book Rating : 4.9/5 (485 download)
Download or read book The Origin of Gold in Archaean Epigenetic Gold Deposits written by Michael Meyer and published by . This book was released on 1985 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (921 download)
Download or read book Archaean Lode Gold Deposits of Canada. Part 1 : a Synthesis of Geochemical Data from Selected Mining Camps, with Emphasis on Patterns of Alteration written by and published by . This book was released on 1986 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. Kerrich
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (934 download)
Download or read book Archaean Lode Gold Deposits of Canada written by R. Kerrich and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Boyle
Publisher : Springer
ISBN 13 : 9781461291695
Total Pages : 676 pages
Book Rating : 4.2/5 (916 download)
Download or read book Gold written by Boyle and published by Springer. This book was released on 2011-09-30 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: GOLD: History and Genesis of Deposits is the product of an effort by the Society of Economic Geologists to publish materials that will expand knowl edge concerning timely, specific topics important to the study of economic geology and to economic geologists. A volume on gold was selected for a general review-type publication because of the importance of the gold mining industry in the 1980s. The officers and council of the Society of Economic Geologists authorized the preparation of this book on gold in 1981, and Dr. Robert W. Boyle was selected as its author. Dr. Boyle has extensive experience in the study of gold deposits. He has an international reputation and a broad interest and understanding of the gold mining industry, the origin of gold deposits, and the history of gold as a metal and ore from prehistoric times to recent. Dr. Boyle uses important publications on gold deposits as source materials to document the various pathways of geological thought over time to introduce the reader to modern concepts. The book contains a wealth of information concerning gold.
