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The Po�cos de Caldas Project : natural analogues of processes in a radioactive waste repository /
The safe disposal of radioactive wastes by burial in deep geological formations requires long-term predictions of the future behaviour of the wastes and their engineered repository. Such predictions can be tested by evaluating processes analogous to those which will occur in a repository, which have...
| Clasificación: | Libro Electrónico |
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| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Amsterdam ; New York :
Elsevier,
1993.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; The Po�cos de Caldas Project: Natural Analogues of Processes in a Radioactive Waste Repository; Copyright Page; Table of Contents; Preface; Chapter 1. The Po�cos de Caldas Project: An Introduction and Summary of Its Implications for Radioactive Waste Disposal; Abstract; Introduction; Objective 1: Geochemical Model Testing; Objective 2: Redox Front Processes; Objective 3: Particles and Colloids and Their Role in Radionuclide Transport; Objective 4: Hydrothermal Alteration, Metasomatism and Mineralisation Modelling; Acknowledgements; References.
- Chapter 2. The Regional Geology of the Po�cos de Caldas Alkaline Complex: Mineralogy and Geochemistry of Selected Nepheline Syenites and PhonolitesAbstract; 1. Introduction; 2. Regional Geology; 3. Description of Regional Samples; 4. Final Considerations: Regional Samples and Geological Evolution; 5. Acknowledgements; References; Chapter 3. Hydrothermal and Supergene Uranium Mineralization at the Osamu Utsumi Mine, Po�cos de Caldas, Minas Gerais, Brazil; Abstract; 1. Introduction; 2. Geological Setting; 3. Analytical Methods; 4. Host Rocks; 5. Oxidized Zone; 6. Weathering Cover; 7. Geochemistry.
- 8. Fracture Mineralogy9. Ultramafic Dykes; 10. Uranium Mineralization; 11. Redox Fronts; 12. Summary and Discussion; Acknowledgements; References; Chapter 4. The Supergene Thorium and Rare-Earth Elemen Tdeposit at Morro do Ferro, Po�cos de Caldas, Minas Gerais, Brazil; Abstract; 1. Introduction; 2. Analytical Methods; 3. Previous Work; 4. Geological Setting; 5. Country Rock; 6. Supergene Th-Ree-Mineralization; 7. Conclusions; Acknowledgements; References; Chapter 5. Origin and Growth Rates of Pitchblende Nodules at the Osamu Utsumi Mine, Po�cos de Caldas, Brazil; Abstract; Introduction.
- Redox FrontMethods; Development of Pitchblende Nodules; Second Generation Nodules; Uranium Series Disequilibrium; Origin of First and Second Generation Nodules; Age Estimates of First Generation Nodules; Growth Rates of Second Generation Nodules; Conclusions; Acknowledgements; References; Chapter 6. Isotopic Geochemical Characterization of Selectednepheline Syenites and Phonolites from the Po�cosde Caldas Alkaline Complex, Minas Gerais, Brazil; Abstract; 1. Introduction; 2. Analytical Methods; 3. Regional Studies; 4. Drillcore F4 Studies, Osamu Utsumi Mine.
- 5. Lamproite Dyke Studies, Osamu Utsumi Mine6. Summary and Conclusions; 7. Acknowledgements; References; Chapter 7. Geomorphological and Hydrogeological Features of the Po�cos de Caldas Caldera Analogue Study Sites; Abstract; 1. Introduction; 2. Geomorphological Description of the Po�cos de Caldas Plateau; 3. Hydrogeology of the Two Study Sites; 4. Conclusions; Acknowledgements; References; Chapter 8. Ground Water Chemistry and Geochemica Lmodeling of Water-Rock Interactions at the Osamu Utsumi Mine and the Morro do Ferro analogue study sites, Po�cos de Caldas, Minas Gerais, Brazil; Abstract.