Schlagwort(e):
Rock-forming minerals.
;
Electronic books.
Materialart:
Online-Ressource
Seiten:
1 online resource (559 pages)
Ausgabe:
1st ed.
ISBN:
9780080869056
Serie:
Issn Series ; v.Volume 6
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=404649
Sprache:
Englisch
Anmerkung:
Front Cover -- Iron-Formation: Facts and Problems -- Copyright Page -- Contents -- Foreword -- Contributing Authors -- CHAPTER 1.INTRODUCTION -- Origin, purpose, and scope of this volume -- Classification and nomenclature of iron-formation -- Acknowledgements -- References -- CHAPTER 2. ANIMIKIE BASIN, LAKE SUPERIOR REGION. U.S.A. -- Introduction -- Regional geologic setting -- Geochronology -- Documentation of the basin -- Description of the basin -- The iron-formations and their depositional environments -- Secondary enrichment deposits -- References -- CHAPTER 3. THE HAMERSLEY BASIN -- Introduction -- Documentation -- Location, area, shape, and outcrop limits -- Stratigraphy -- The iron-formations -- Structure -- Metamorphism -- Tectonic development of the basin -- Surface configuration and depositional conditions -- Mineral deposits -- Acknowledgements -- References -- CHAPTER 4. PALAEOENVIRONMENTAL SETTING OF IRON-FORMATIONS IN THE DEPOSITIONAL BASIN OF THE TRANSVAAL SUPERGROUP, SOUTH AFRICA -- Introduction -- Documentation of the depository -- Structure and metamorphism of the strata -- Age -- Nomenclature -- Tectono-sedimentary and stratigraphic setting of the iron-formations -- Schmidtsdrif Subgroup -- Campbellrand-Malmani carbonate sequence -- Asbesheuwels Subgroup -- Koegas Subgroup -- Rooihoogte and Timeball Hill Formations -- Makganyene Diamictite -- Voëlwater Subgroup -- Manganore Iron Formation -- Vertical distribution of iron and manganese in the Transvaal Supergroup -- Conclusion -- Acknowledgements -- References -- CHAPTER 5. THE KRIVOY ROG BASIN -- Introduction -- History of geological research -- Geological structure of the basin -- The iron-formations -- Metamorphism -- Genetic model for Precambrian banded iron-formations -- Iron ore deposits -- References.
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CHAPTER 6. IRON-FORMATION IN FOLD BELTS MARGINAL TO THE UNGAVA CRATON -- Introduction -- History and documentation of geology -- Description of basins -- Depositional environments -- References and selected bibliography -- CHAPTER 7. THE NABBERU BASIN OF WESTERN AUSTRALIA -- Introduction -- Documentation of the basin -- Description of the basin -- Depositional environment -- Depositional facies model -- Acknowledgements -- References -- CHAPTER 8. PART A: A CONTRIBUTION ON THE CHEMICAL COMPOSITION OF PRECAMBRIAN IRON-FORMATIONS -- Introduction -- Systematic studies -- Discussion and conclusions -- Acknowledgements -- References -- PART B: RARE EARTH ELEMENTS IN IRON-FORMATION -- Introduction -- REE distribution in iron-formation -- Evolution of Precambrian oxidation states -- Mineralogical facies -- Diagenesis -- Volcanic input to iron-formations -- Summary -- References -- PART C: OXYGEN ISOTOPE GEOCHEMISTRY OF IRON-FORMATION -- Introduction -- Proterozoic iron-formation -- Archean iron-formation -- Discussion -- Acknowledgement -- References -- CHAPTER 9. THE PALAEONTOLOGY AND PALAEOECOLOGY OF PRECAMBRIAN IRON-FORMATIONS -- Introduction -- Palaeontology -- Palaeoecology -- Microbial deposition of iron-formation -- Conclusions -- Acknowledgements -- References -- CHAPTER 10. BANDED IRON-FORMATION - A GRADUALIST'S DILEMMA -- Introduction -- What needs to be explained -- Assumptions and constraints -- The seminal sources -- The original model -- Subsequent modification of the model -- Testable corollaries of the model -- Findings relevant to a test of the model -- Current status of the model as it relates to BIF -- References -- CHAPTER 11. DIAGENESIS AND METAMORPHISM OF PRECAMBRIAN BANDED IRON-FORMATIONS -- Introduction -- Major-element geochemistry of banded iron-formations -- Diagenetic to very low-grade metamorphic assemblages.
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Physical and chemical conditions of iron-formation diagenesis and very low-grade metamorphism -- Medium-grade metamorphic assemblages -- Physical and chemical conditions of medium-grade metamorphism -- High-grade metamorphic assemblages -- Physical and chemical conditions of high-grade metamorphism -- Theoretical evaluation of the conditions of metamorphism of iron-formations -- Acknowledgements -- References -- CHAPTER 12. DISTRIBUTION OF BANDED IRON-FORMATION IN SPACE AND TIME -- Introduction -- Age and tonnage assessments -- Temporal and spatial distribution -- Significance of peaks in the depositional record -- Acknowledgement -- References -- Chapter 13. CHEMICAL FACTORS IN THE DEPOSITION AND DIAGENESIS OF BANDED IRON-FORMATION -- Introduction -- The Dales Gorge Member -- The nature of the source solutions -- The primary precipitation -- The primary sediment and its diagenesis -- Conclusion -- Acknowledgements -- References -- CHAPTER 14. SUPERGENE ALTERATION OF BANDED IRON-FORMATION -- Introduction -- Physical weathering -- Chemical weathering -- Discussion -- Conclusion -- Acknowledgements -- References -- Subject Index.
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