Robb Introduction to Ore-Forming Processes

1. Auflage 2013
ISBN: 978-1-118-68757-4
Verlag: John Wiley & Sons
Format: EPUB
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 384 Seiten, E-Book

Introduction to Ore-Forming Processes is the first seniorundergraduate - postgraduate textbook to focus specificallyon the multiplicity of geological processes that result in theformation of mineral deposits.
* * Opens with an overview of magmatic ore-forming processes
* Moves systematically through hydrothermal and sedimentarymetallogenic environments, covering as it does the entire gamut ofmineral deposit types, including the fossil fuels and supergeneores
* The final chapter relates metallogeny to global tectonics byexamining the distribution of mineral deposits in space andtime
* Boxed examples of world famous ore deposits are featuredthroughout providing context and relevance to the process-orienteddescriptions of ore genesis
* Brings the discipline of economic geology back into the realmof conventional mainstream earth science by emphasizing the factthat mineral deposits are simply one of the many natural wonders ofgeological process and evolution.
Artwork from the book is available to instructors atwww.blackwellpublishing.com/robb.

Autoren/Hrsg.

Robb, Laurence

Inhaltsverzeichnis

Preface.
Introduction: Mineral Resources:.
Introduction And Aims.
What Makes A Viable Mineral Deposit?.
Some Useful Definitions And Compilations.
Natural Resources, Sustainability And EnvironmentalResponsibility.
Summary And Further Reading.
Part I: Igneous Processes:.
1. Igneous Ore-Forming Processes:.
Introduction.
Magmas And Metallogeny.
Why Are Some Magmas More Fertile Than Others?...The'Inheritance Factor'.
Partial Melting And Crystal Fractionation As Ore FormingProcesses.
Liquid Immiscibility As An Ore-Forming Process.
A More Detailed Consideration Of Mineralization In MaficMagmas.
A Model For Mineralization In Layered Mafic Intrusions.
Summary And Further Reading.
2. Magmatic-Hydrothermal Ore-Forming Processes:.
Introduction.
Some Physical And Chemical Properties Of Water.
Formation Of A Magmatic Aqueous Phase.
The Composition And Characteristics Of Magmatic-HydrothermalSolutions.
A Note On Pegmatites And Their Significance To Granite-RelatedOre-Forming Processes.
Fluid-Melt Trace Element Partitioning.
Water Content And Depth Of Emplacement Of Granites:Relationships To Ore-Forming Processes.
Models For The Formation Of Porphyry-Type Cu, Mo And WDeposits.
Fluid Flow In And Around Granite Plutons.
Skarn Deposits.
Near-Surface Magmatic-Hydrothermal Processes: The'Epithermal Family Of Au-Ag-(Cu) Deposits.
The Role Of Hydrothermal Fluids In Mineralized Mafic Rocks.
Summary And Further Reading.
Part II: Hydrothermal Processes:.
3. Hydrothermal Ore-Forming Processes:.
Introduction.
Other Fluids In The Earth's Crust And Their Origins.
The Movement Of Hydrothermal Fluids In The Earth'sCrust.
Further Factors Affecting Metal Solubility.
Precipation Mechanisms For Metals In Solution.
More On Fluid/Rock Interaction: An Introduction To HydrothermalAlteration.
Metal Zoning And Paragenetic Sequence.
Modern Analogues Of Ore-Forming Processes: The VMS-SEDEXContinuum.
Mineral Deposits Associated With Aquo-Carbonic MetamorphicFluids.
Ore Deposits Associated With Connate Fluids.
Ore Deposits Associated With Near Surface Meteoric Fluids(Ground Water).
Summary And Further Reading.
Part III: Sedimentary/Surficial Processes:.
4. Surficial and Supergene Ore-Forming Processes:.
Introduction.
Principles.
Lateritic Deposits.
Clay Deposits.
Calcrete-Hosted Deposits.
Supergene Enrichment Of Cu And Other Metals In Near-SurfaceDeposits.
Summary And Further Reading.
5. Sedimentary Ore-Forming Processes:.
Introduction.
Clastic Sedimentation And Heavy Mineral Concentration: PlacerDeposits.
Chemical Sedimentation: Banded Iron Formation, Phosphorites, AndEvaporites.
Fossil Fuels: Oil/Gas Formation And Coalification.
Summary And Further Reading.
Part IV: Global Tectonics And Metallogeny:.
6. Ore Deposits in a Global Tectonic Context:.
Introduction.
Patterns In The Distribution Of Mineral Deposits.
Continental Growth Rates.
Crustal Evolution And Metallogenesis.
Metallogeny Through Time.
Plate Tectonics And Ore Deposits: A Summary.
Summary And Further Reading.
References.
Index

Über Autor(innen)

Laurence Robb is Pavitt Professor of Economic Geology at the University of the Witwatersrand, Johannesburg, South Africa, and also Director of its Economic Geology Research Institute. He has worked for over 20 years on many of the great mineral districts of the African continent and has taught economic geology at Wits for almost as long.