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BL
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| Record Number
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839390
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| Main Entry
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Boudreau, Alan,1953-
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| Title & Author
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Hydromagmatic processes and platinum-group element deposits in layered intrusions /\ Alan Boudreau (Duke University, North Carolina).
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| Publication Statement
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Cambridge ;New York, NY :: Cambridge University Press,, 2019.
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| Page. NO
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1 online resource
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| ISBN
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1108235611
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: 1108246818
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: 9781108235617
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: 9781108246811
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1108416004
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9781108416009
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| Bibliographies/Indexes
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Includes bibliographical references and index.
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| Contents
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Cover; Half-title; Title page; Copyright information; Dedication; Contents; Preface; 1 Introduction; 1.1 Layered Intrusions and Their Volatiles; 1.2 Hydromagmatic Processes as a Special Type of Hydrothermal Activity; 1.3 Igneous Fluids and Platinum-Group Element Deposits in Layered Intrusions; 1.3.1 The Conventional Magmatic Model for the Concentration of the PGE; 1.3.2 The Hydromagmatic Model for the Concentration for the PGE; 2 Layered Intrusions: An Overview; 2.1 Cumulate Terminology and Its Problems; 2.2 Processes of Accumulation of Crystals on the Floor of a Magma Chamber
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2.3 Processes Occurring within the Crystal-Liquid Mush2.3.1 Crystal Aging; 2.3.2 Compaction; 2.3.3 Crystallization of Interstitial Liquid and Subsolidus Re-Equilibration; 2.3.4 Metasomatic Changes; 2.4 Layered Intrusions and Their PGE Deposits: Examples; 2.4.1 The Bushveld Complex; 2.4.2 The Stillwater Complex; 2.4.3 Skaergaard Intrusion; 3 Magmatic Volatiles and Fluids; 3.1 Introduction; 3.2 Volatile Components of Magmas; 3.2.1 H2O and CO2; 3.2.2 Sulfur; 3.2.3 Halogens; 3.3 Mineral Solubility Considerations
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3.4 Volatile-Rich Silicate Liquids, Solute-Rich Volatile Fluids and Transitional Fluids3.5 Application to Layered Intrusions; 3.5.1 Volatile Concentrations in Parent Liquids; 3.5.2 A Country Fluid Component?; 4 Geochemistry of the Platinum-Group Elements; 4.1 Introduction; 4.2 Solubility of the PGE in Silicate Liquids; 4.3 Aqueous Geochemistry of the PGE; 5 Generation and Movement of Bubbles and Volatile Fluids in a Crystal-Liquid Mush; 5.1 Bubble Nucleation; 5.2 Bubble Growth; 5.3 Bubble Migration in a Crystal Mush; 5.4 Bubble Coalescence and 3-Phase Flow of a Continuous Fluid
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5.5 Lateral Migration of Fluids6 Halogens in Layered Intrusions; 6.1 Introduction; 6.2 Apatite Occurrence and Compositional Trends in Layered Intrusions; 6.3 Associated Chilled Margin and Sill/Dyke Compositions; 6.4 Chlorine and PGE Ore Grade; 6.5 Apatite-Biotite Geothermometry; 6.6 Chlorine Isotopes; 6.7 Halogen Partitioning between Apatite, Silicate Liquid and Volatile Fluid; 6.8 Causes of Halogen Variations in Apatite; 6.8.1 Parent Magma Cl/F Variations; 6.8.2 Trapped Liquid Effects; 6.8.3 Temperature and Pressure Effects; 6.8.4 Vapour Separation and Degassing of the Magma Chamber
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6.8.5 Crystallization of Interstitial Hydrous Minerals6.8.6 Vapour Refining in a Crystal Mush; 6.8.7 External Sources for the Halogens; 7 Melt and Fluid Inclusion Evidence; 7.1 Introduction; 7.2 Silicate Liquid Inclusions; 7.2.1 Silicate Liquid Inclusions in the Stillwater Complex; 7.2.2 Other Examples of Silicate Liquid Inclusions; 7.3 Fluid Inclusions; 7.3.1 Fluid Inclusions in the Stillwater Complex; 7.3.2 Fluid Inclusions and Hydrosaline Melt Inclusions in Other Intrusions; 7.4 The Origin of High-Salinity Brines and Halide Melts; 7.5 Ore Element Concentrations in Fluid Inclusions
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| Abstract
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"The role of hydrothermal fluids during the crystallization of layered intrusions and the ore deposits they contain has long been debated. This book summarizes the evidence for fluid-crystal-liquid (hydromagmatic) interactions and their importance for the understanding of the formation of platinum-group deposits in layered intrusions."--
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| Subject
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Folds (Geology)
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Hydrothermal deposits.
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Intrusions (Geology)
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Ore deposits.
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Platinum ores.
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Folds (Geology)
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Hydrothermal deposits.
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Intrusions (Geology)
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NATURE-- Natural Resources.
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NATURE-- Rocks Minerals.
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Ore deposits.
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Platinum ores.
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| Dewey Classification
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553.4/22
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| LC Classification
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QE390.2.P56B68 2019eb
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