Economic Geology of the South Pass Granite-greenstone Belt, Southern Wind River Range, Western Wyoming PDF Download
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Author: W. Dan Hausel
Publisher:
ISBN:
Category : Geology, Economic
Languages : en
Pages : 140
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Author: W. Dan Hausel
Publisher:
ISBN:
Category : Geology, Economic
Languages : en
Pages : 140
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Book Description
Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 206
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Author:
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 168
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Author:
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 430
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Author: W. Dan Hausel
Publisher:
ISBN: 9781884589058
Category : Science
Languages : en
Pages : 44
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Author:
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 118
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Book Description
Author: P.S. Garofalo
Publisher: Geological Society of London
ISBN: 1862396574
Category : Science
Languages : en
Pages : 266
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Book Description
Hydrothermal ore deposits that are exploited for gold include both gold-only deposits, such as orogenic deposits, and gold-bearing examples of the common hydrothermal deposits types that are formed around upper-crustal magmatic centres, in particular porphyry and epithermal deposits. Fluid-inclusion data have shown that ore fluids of gold-only deposits are compositionally distinct compared to fluids of other deposit types. This Special Publication includes an up-to-date summary of thermodynamic parameters of aqueous Au species at high temperatures and pressures; a dataset of fluid inclusion properties and compositions from orogenic deposits of different parts of the world; several comprehensive case studies of different types of gold deposits and their fluids from USA, Brazil, Egypt, Slovakia and Bulgaria; and numerical modelling aimed to define key parameters that affect fluid flow and gold deposition at a range of scales.
Author: Z.X. Li
Publisher: Geological Society of London
ISBN: 1862397333
Category : Science
Languages : en
Pages : 298
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Book Description
The supercontinent-cycle hypothesis attributes planetary-scale episodic tectonic events to an intrinsic self-organizing mode of mantle convection, governed by the buoyancy of continental lithosphere that resists subduction during the closure of old ocean basins, and the consequent reorganization of mantle convection cells leading to the opening of new ocean basins. Characteristic timescales of the cycle are typically 500 to 700 million years. Proposed spatial patterns of cyclicity range from hemispheric (introversion) to antipodal (extroversion), to precisely between those end members (orthoversion). Advances in our understanding can arise from theoretical or numerical modelling, primary data acquisition relevant to continental reconstructions, and spatiotemporal correlations between plate kinematics, geodynamic events and palaeoenvironmental history. The palaeogeographic record of supercontinental tectonics on Earth is still under development. The contributions in this Special Publication provide snapshots in time of these investigations and indicate that Earth’s palaeogeographic record incorporates elements of all three end-member spatial patterns.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 252
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Author: W. Dan Hausel
Publisher: Wyoming State Geological Survey
ISBN:
Category : Nature
Languages : en
Pages : 38
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