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Umfang: 1 online resource (xiv, 558 pages) : , illustrations

ISBN: 1-281-75612-1 , 9786611756123 , 0-08-086905-X

Serie: Developments in Precambrian geology ; 6

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 , 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 , English

Weitere Ausg.: ISBN 0-444-42144-0

Sprache: Englisch