Atlas Of Alteration Assemblages Styles And Zoning In Orogenic Lode Gold Deposits In A Variety Of Host Rock And Metamorphic Settings
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Atlas of Alteration Assemblages Styles and Zoning in Orogenic Lode gold Deposits in a Variety of Host Rock and Metamorphic Settings
Author | : Anonim |
Publsiher | : Unknown |
Total Pages | : 68 |
Release | : 1999 |
Genre | : Geology, Structural |
ISBN | : STANFORD:36105028990658 |
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Hydrothermal Processes and Mineral Systems
Author | : Franco Pirajno |
Publsiher | : Springer Science & Business Media |
Total Pages | : 1250 |
Release | : 2008-10-14 |
Genre | : Science |
ISBN | : 9781402086137 |
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Hydrothermal processes on Earth have played an important role in the evolution of our planet. These processes link the lithosphere, hydrosphere and biosphere in continuously evolving dynamic systems. Terrestrial hydrothermal processes have been active since water condensed to form the hydrosphere, most probably from about 4.4 Ga. The circulation of hot aqueous solution (hydrothermal systems) at, and below, the Earth’s surface is ultimately driven by magmatic heat. This book presents an in-depth review of hydrothermal proceses and systems that form beneath the oceans and in intracontinental rifts, continental margins and magmatic arcs. The interaction of hydrothermal fluids with rockwalls, the hydrophere and the biophere, together with changes in their composition through time and space, contribute to the formation of a wide range of mineral deposit types and associated wallrock alteration. On Earth, sites of hydrothermal activity support varied ecosystems based on a range of chemotrophic microorganisms both at surface and in the subsurface. This book also provides an overview of hydrothermal systems associated with meteorite impacts and explores the possibility that hydrothermal processes operate on other terrestrial planets, such as Mars, or satellites of the outer planets such as Titan and Europa. Possible analogues of extraterrestrial putative hydrothermal processes pose the intriguing question of whether primitive life, as we know it, may exist or existed in these planetary bodies. Audience: This volume will be of interest to scientists and researchers in geosciences and life sciences departments, as well as to professionals and scientists involved in mining and mineral exploration.
Gold in the Central Lapland Greenstone Belt
Author | : V. Juhani Ojala |
Publsiher | : Unknown |
Total Pages | : 276 |
Release | : 2007 |
Genre | : Gold ores |
ISBN | : STANFORD:36105124304853 |
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Gold in 2000
Author | : Steffen Gerd Hagemann,Philip E. Brown |
Publsiher | : Unknown |
Total Pages | : 584 |
Release | : 2000 |
Genre | : Gold |
ISBN | : UOM:39015053386507 |
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Geological Classification of Canadian Gold Deposits
Author | : Knud Howard Poulsen,F. Robert,B. Dubé,Geological Survey of Canada |
Publsiher | : Unknown |
Total Pages | : 116 |
Release | : 2000 |
Genre | : Geology |
ISBN | : UIUC:30112067124211 |
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This bulletin proposes a geological classification of lode gold deposits based largely on the nature of the ore and on the geological settings of the deposits. Sixteen common types of bedrock gold deposits are distinguished and their main geological attributes are summarized. These do not correspond to an equal number of genetic types; many of these deposit types represent different components of larger hydrothermal systems and are genetically related. Most of the deposit types identified are represented by at least one large example (containing over 100 tonnes of gold). Descriptions are provided of Canadian gold deposits, including Archean & Proterozoic deposits in the Canadian Shield, Late Proterozoic to Palaeozoic deposits in the Appalachian Orogen, and Mesozoic to Cenozoic deposits in the Cordilleran Orogen. The final section discusses the application of gold deposit models.
An Overview of the Tectonic Setting and Styles of Mineralization and Alteration of Lode gold Deposits in the Late Paleozoic Southern Urals Russia
Author | : Anonim |
Publsiher | : Unknown |
Total Pages | : 68 |
Release | : 1998 |
Genre | : Geology, Stratigraphic |
ISBN | : STANFORD:36105021431429 |
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Archean Lode Gold Deposits in Ontario
Author | : A. C. Colvine |
Publsiher | : Unknown |
Total Pages | : 164 |
Release | : 1988 |
Genre | : Science |
ISBN | : CHI:29216966 |
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Gold Deposits in Metamorphic Rocks
Author | : Ed DeWitt,Jerome Waegli,Thomas D. Light,Geological Survey (U.S.),David A. Brew,Roger Parkmand Ashley |
Publsiher | : Unknown |
Total Pages | : 44 |
Release | : 1990 |
Genre | : Geology |
ISBN | : UOM:39015095166016 |
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