Regional Studies

Regional Studies

1st Edition - January 1, 1976

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  • Author: Author Unknown
  • eBook ISBN: 9780444598950

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Description

Regional Studies is a collection of papers that deals with strata-bound mineral deposits in the Eastern Alps, in the Canadian Cordillera, in north-central, and southwest England. Other papers describe southern African stratiform ore deposits and the genesis of Irish base-metal deposits. One paper compares the various types of volcanogenic mineral deposits and their depositional environments characterized by distinct assemblages of volcanic rocks, which formed in the Northern Appalachians during certain episodes of the tectonic evolution. The paper notes that the youngest volcanogenic deposits of economic interest are tungsten—molybdenum—tin—bismuth base metal deposits in highly altered rhyolitic sub-volcanic complexes at Mount Pleasant, New Brunswick. Another paper reviews the mineral occurrences in southern Africa that include stratiform, non-magmatic, ore deposits, The paper considers a subdivision of deposits formed from surficial chemical processes during previous (or current) cycles of weathering and erosion. Many ore bodies have a dual origin: for example, the iron in the high-grade hematite deposits is partly syngenetic and partly epigenetic. The paper also illustrates the time-dependence of some stratiform ore deposits in southern Africa in a schematic diagram. Geologists, researchers, or engineers whose works are related with ore deposits and mining will benefit tremendously from the collection.

Table of Contents


  • Chapter I. The Strata-Bound Ore Deposits in the Eastern Alps

    Introduction

    Lead-Zinc (Barite-Fluorite) Deposits

    Sulfide ("Kies") Deposits with Copper Contents

    Uranium Deposits and Copper Mineralisations in Sandstones

    Scheelite Deposits

    Stibnite Deposits

    Cinnabar Deposits

    Magnesite Deposits

    Siderite Deposits

    Manganese Deposits

    Summary and Conclusions

    References

    Chapter 2. Stratabound Mineral Deposits of the Canadian Cordillera

    Introduction

    Tectonic Framework

    Stratigraphic Framework of the Columbian Orogen

    Proterozoic

    Paleozoic and Early Mesozoic

    Late Mesozoic and Tertiary

    Stratigraphic Framework of the Pacific Orogen

    Crystalline Basement

    Paleozoic Rocks

    Mesozoic Rocks

    Cenozoic Rocks

    Definitions

    Stratabound Deposits in the Columbian Orogen: Deposits in Rocks of Proterozoic Age

    General Geology of the Belt-Purcell Supergroups

    Copper in the Belt and Purcell Supergroups

    Copper Mineralization in Other Purcell Rocks

    Summary

    Lead and Zinc in the Purcell Supergroup

    Summary

    Iron Formation in the Windermere (Hadrynian) System

    Stratabound Deposits in the Columbian Orogen: Deposits of Early and Middle Paleozoic (and Latest Proterozoic) Age

    Lead and Zinc Mineralization in Southern Cordillera

    Lead-Zinc Mineralization in Northern Cordillera

    General Distribution and Geology of Deposits of Middle Devonian Age

    Summary

    Stratabound Deposits in the Pacific Orogen

    Massive Sulphide Deposits

    Stratabound and Stratiform Deposits

    Stratabound Deposits with Dispersed Mineralization

    Deposits with Copper Sulphide - Native Copper Mineralizations

    Summary

    Acknowledgements

    References

    Chapter 3. Comparison of Volcanogenic Mineral Deposits in the Northern Appalachians and their Relationship to Tectonic Evolution

    Introduction

    General Geology

    Precambrian

    Cambrian-Ordovician

    Silurian-Devonian

    Carboniferous and Later

    Volcanogenic Mineral Deposits

    Deposits in Volcanic Rocks Along Disrupted Continental Margin (or Intracratonic Basin) Deposits in Submarine Mafic ("Oceanic Ridge") Volcanic Rocks

    Deposits in Submarine Mafic to Felsic ("Island Arc") Volcanic Rocks

    Terrestrial Sub-Volcanic Deposits

    Discussion

    Acknowledgements

    Postscript

    References

    Chapter 4. The Ores of the South Pennines and Mendip Hills, England — A Comparative Study

    Introduction

    South Pennines

    Introduction

    Stratigraphy

    Structure

    Later Geological History

    Permo-Triassic Mineralization

    Minerals Present

    The Ore Bodies

    Thermal Zoning

    Fluid Inclusions

    Isotope Dating

    Wall-Rock Alteration

    Genesis of the Ore Deposits

    The Mendip Hills

    Introduction

    Stratigraphy

    Structure

    The Mineral Field

    Mineralogy

    Thermal, Isotope and Other Studies

    Ore Genesis

    Comparisons of South Pennine and Mendip Orefields

    Conclusions

    Acknowledgements

    References

    Chapter 5. Ores of the Northern Pennines, The Lake District and North Wales

    Introduction

    Northern Pennine Orefield - Alston Block

    The Mineral Deposits

    The Minerals

    Zonation of the Orefield

    Fluid-Inclusion Studies

    Wall-Rock Alteration

    Age of Mineralisation

    Genesis of the Ores

    Northern Pennine Orefield - Askrigg Block

    The Mineral Deposits

    Zonation of the Orefield

    Lake District Orefield

    The Mineral Deposits

    Zonation of the Orefield

    Fluid-Inclusion Studies

    Wall-Rock Alteration

    Age of the Mineralisation

    Genesis of the Ores

    Northeast Wales Orefield

    Stratigraphy

    Structure

    Minerals

    The Ore Bodies

    Zonation of the Orefield

    Fluid-Inclusion Studies

    Wall-Rock Alteration

    Age of Mineralisation

    Genesis of the Ore Deposits

    Conclusions

    References

    Northern Pennine Orefield - Alston Block

    Northern Pennine Orefield - Askrigg Block

    Lake District Orefield

    Northeast Wales Orefield

    Chapter 6. Genesis of Irish Base-Metal Deposits

    Introduction: The Geological Framework

    Occurrence, Nature and Genesis of the Mineral Deposits

    The Caledonian Metamorphic Belt

    The Variscan Fold Belt

    Red-Bed Copper Deposits

    Vein Deposits

    The Variscan Foreland - The Central Plain of Ireland

    The Deposits in the Lower Palaeozoic Inliers

    The Deposits in the Lower Carboniferous

    References

    Chapter 7. A Review of Southern African Stratiform Ore Deposits - their Position in Time and Space

    Introduction

    The Stratigraphic History of Southern Africa

    Classification of Stratiform Ore Deposits

    Mechanical Concentrations

    Ancient Placer Deposits

    Recent Submarine, Coastal and Alluvial Placer Deposits

    Organic Accumulations

    Coal and Oil Shale in the Karroo Supergroup

    Petroleum

    Chemical Precipitates

    Limestone, Dolomite and Marble

    Ironstone

    Iron Formation

    Manganese

    The Asbestiform Amphiboles

    Volcanogenic Ore Deposits

    Volcanogenic Deposits in Greenstone Belts

    Volcanogenic Deposits in the Northwest Cape Province

    Volcanogenic Deposits in the Damara Supergroup, South West Africa

    Stratiform Epigenetic Deposits

    Hypo-, meso- and epi-Thermal Ore Deposits

    Pyrometasomatic Deposits

    Telethermal Deposits

    Deposits Related to Surficial Processes

    High-Grade Iron Deposits

    Manganese

    Phosphates

    Gypsum

    Calcrete

    Salt

    Bauxite

    Deposits Related to Metamorphism

    Metamorphic Minerals in Carbonate Rocks

    Silicates and Oxides of Alumina

    Southern African Metallogenic Epochs

    Acknowledgements

    References

Product details

  • Language: English
  • Copyright: © Elsevier Science 1976
  • Published: January 1, 1976
  • Imprint: Elsevier Science
  • eBook ISBN: 9780444598950

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