| 作者简介 | 第1-7页 |
| 摘要 | 第7-10页 |
| ABSTRACT | 第10-14页 |
| Chapter 1 Introduction | 第14-34页 |
| ·Introduction | 第14-19页 |
| ·Background and literature review | 第19-26页 |
| ·Uranium transport and deposition in aqueous systems | 第19-22页 |
| ·Geological setting of URU deposits | 第22-26页 |
| ·Methodology and principles | 第26-29页 |
| ·Organization of thesis | 第29-34页 |
| Chapter 2 Numerical modeling of hydrothermal fluid flow in the Paleoproterozoic Thelonbasin, Nunavut, Canada (thermally driven free convection model) | 第34-52页 |
| ·Introduction | 第34-35页 |
| ·Development of conceptualized model | 第35-40页 |
| ·Integration and analysis of existing data | 第35-38页 |
| ·Paleo-hydrostratigraphic model | 第38-40页 |
| ·Numerical experiments and results | 第40-47页 |
| ·Basic model | 第40-41页 |
| ·Effect of unconformity | 第41-44页 |
| ·Effect of stratigraphic heterogeneity | 第44-45页 |
| ·Effect of topography | 第45-47页 |
| ·Effect of faults | 第47页 |
| ·Discussion and conclusions | 第47-52页 |
| Chapter 3 Tectonic deformation and fluid flow:implications for the formation ofunconformity-related uranium deposits (thermo-hydro-mechanical model) | 第52-87页 |
| ·Introduction | 第52-53页 |
| ·Geological framework | 第53-60页 |
| ·The Athabasca basin | 第53-55页 |
| ·The Thelon basin | 第55-57页 |
| ·The Kombolgie basin | 第57-59页 |
| ·Far-field orogenic events and fault reactivation | 第59-60页 |
| ·Conceptual model | 第60-64页 |
| ·Theoretical background | 第64-69页 |
| ·Results | 第69-77页 |
| ·Extensional deformation only (model 1) | 第70页 |
| ·Compressive deformation only (model 2) | 第70-72页 |
| ·Thermally-driven convection (model 3) | 第72-74页 |
| ·Coupling of thermally-driven convection and extensional deformation (model 4 ) | 第74-75页 |
| ·Coupling of thermally- driven convection and compressive deformation (model 5) | 第75-77页 |
| ·Discussion | 第77-84页 |
| ·Driving mechanisms of fluid flow | 第77-80页 |
| ·Implications for uranium sources and deposit genesis | 第80-83页 |
| ·Limitations | 第83-84页 |
| ·Conclusions | 第84-87页 |
| Chapter 4 Uranium transport across basement/cover interfaces by buoyancy-driventhermohaline convection:implications for the formation of unconformity-related uraniumdeposits | 第87-122页 |
| ·Introduction | 第87-89页 |
| ·A brief introduction of URU deposits and their geological setting | 第89-92页 |
| ·Methodology | 第92-99页 |
| ·Governing equations and code | 第92-93页 |
| ·Conceptual model | 第93-99页 |
| ·Results | 第99-115页 |
| ·Fluid flow and temperature distribution | 第99-102页 |
| ·Solute transport | 第102-108页 |
| ·The effect of increasing hydraulic conductivity due to fractures | 第108-110页 |
| ·Fluid flow across the basement/cover interface | 第110-115页 |
| ·Discussion | 第115-120页 |
| ·Relative contributions of advection, ion diffusion and mechanical dispersion on solute transport | 第115-116页 |
| ·Uranium initial and boundary conditions | 第116-118页 |
| ·Implications for URU deposit genetic models | 第118-120页 |
| ·Conclusions | 第120-122页 |
| Chapter 5 Summary of original contribution and recommendations for future work | 第122-130页 |
| ·Summary of original contribution | 第122-128页 |
| ·Driving mechanisms of fluid flow | 第122-124页 |
| ·Uranium sources | 第124-126页 |
| ·The role of basal unconformities and faults | 第126-128页 |
| ·Suggestion for future work | 第128-130页 |
| Acknowledgements | 第130-132页 |
| References | 第132-149页 |
