United States Gold Terranes
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United States Gold Terranes
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Author : Edwin W. Tooker
language : en
Publisher:
Release Date : 1989
United States Gold Terranes written by Edwin W. Tooker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Gold mines and mining categories.
United States Gold Terranes
DOWNLOAD
Author : Edwin W. Tooker
language : en
Publisher:
Release Date : 1989
United States Gold Terranes written by Edwin W. Tooker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Gold mines and mining categories.
United States Gold Terranes
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1989
United States Gold Terranes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Gold mines and mining categories.
United States Gold Terranes
DOWNLOAD
Author : Edwin W. Tooker
language : en
Publisher:
Release Date : 1989
United States Gold Terranes written by Edwin W. Tooker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Gold mines and mining categories.
U S Geological Survey Bulletin
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Author :
language : en
Publisher:
Release Date : 1983
U S Geological Survey Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Geology categories.
U S Geological Survey Bulletin
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Author : Geological Survey (U.S.)
language : en
Publisher:
Release Date : 1989
U S Geological Survey Bulletin written by Geological Survey (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Geochemistry categories.
Gold Ores In Metamorphic Terranes A Compilation
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Author : Richard J. Goldfarb
language : en
Publisher:
Release Date : 2010
Gold Ores In Metamorphic Terranes A Compilation written by Richard J. Goldfarb and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 1990
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Government publications categories.
Monthly Catalogue United States Public Documents
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Author :
language : en
Publisher:
Release Date : 1990
Monthly Catalogue United States Public Documents written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Government publications 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