| Acknowledgement | 第8-10页 |
| 中文摘要 | 第10-13页 |
| ABSTRACT | 第13-16页 |
| 1 Introduction | 第25-40页 |
| 1.1 Seafloor hydrothermal systems | 第27-31页 |
| 1.1.1 Active hydrothermal vent systems | 第29-30页 |
| 1.1.2 Inactive hydrothermal vent systems | 第30-31页 |
| 1.2 Products of seafloor hydrothermal circulations | 第31-34页 |
| 1.2.1 Massive sulfides | 第31-32页 |
| 1.2.2 Hydrothermal mounds | 第32页 |
| 1.2.3 Chimneys | 第32页 |
| 1.2.4 Hydrothermal breccia | 第32-33页 |
| 1.2.5 Ochreous and Gossan deposits | 第33页 |
| 1.2.6 Fe-oxyhydroxides and silica deposits | 第33-34页 |
| 1.2.7 Metalliferous sediments | 第34页 |
| 1.3 Geological settings of Carlsberg Ridge | 第34-35页 |
| 1.4 Geological characteristics of Wocan hydrothermal field | 第35-37页 |
| 1.5 Research objectives and Thesis content | 第37-40页 |
| 2 Materials and methods | 第40-45页 |
| 2.1 Wet-sieve analysis | 第40页 |
| 2.2 Mineral abundance and chemistry | 第40-41页 |
| 2.3 Bulk sediment geochemistry and mineralogy | 第41页 |
| 2.4 Sulfur isotope analysis | 第41-42页 |
| 2.5 XRF Core Scanning and AMS ~(14)C dating on sediment core | 第42-45页 |
| 3 Mineralogical and geochemical signatures of metalliferous sediments in Wocan-1 andWocan-2 hydrothermal sites:Implication for the dynamics of hydrothermal circulationand post-depositional process | 第45-63页 |
| 3.1 Mineralogy, morphology, and abundance of sulfide and non-sulfide grains | 第47-50页 |
| 3.2 Bulk sediment geochemistry | 第50-52页 |
| 3.3 Mineral chemistry of sulfide separates | 第52-55页 |
| 3.4 Sulfur isotopes | 第55-56页 |
| 3.5 The effect of primary and post-depositional changes, evidence from grain texture,bulk chemical compositions and mineral chemistry | 第56-60页 |
| 3.6 The contributions of hydrothermal fluid, evidence from S isotope values | 第60-62页 |
| 3.7 Summary | 第62-63页 |
| 4 Geochemical investigations of Fe-Si-Mn oxyhydroxides deposits in Wocan-1 andWocan-2 hydrothermal sites: Constraints on their origin in relation to the hydrothermalprocess | 第63-80页 |
| 4.1 Bulk sediment mineralogy | 第66-69页 |
| 4.2 Morphology and relative abundance of Fe-oxyhydroxide separates | 第69-74页 |
| 4.3 Origin and formation process of Wocan-1 Fe-oxyhydroxides and their associationwith the hydrothermal process | 第74-77页 |
| 4.4 Origin and formation process of Wocan-2 Fe-oxyhydroxides and their associationwith the hydrothermal process | 第77-79页 |
| 4.5 Origin and formation process of oxyhydroxide separates from the Ridge flanksediment | 第79页 |
| 4.6 Summary | 第79-80页 |
| 5 A mineralogical and geochemical study of bulk sediments core from 4°07'N/69°20'E,Indian Ocean:Implication for the transportation of hydrothermal particles from theCarlsberg Ridge | 第80-92页 |
| 5.1 Mineralogical and chemical investigations | 第82-85页 |
| 5.2 Age model and sedimentation rate | 第85-86页 |
| 5.3 Vertical and temporal changes in mineralogical variations | 第86-89页 |
| 5.4 Implications on the vertical and temporal changes in the mineralogical variations | 第89-90页 |
| 5.5 Summary | 第90-92页 |
| 6 Conclusions and Future work | 第92-95页 |
| 6.1 Conclusions | 第92-93页 |
| 6.2 Future Research | 第93-95页 |
| References | 第95-109页 |
| Appendices | 第109-118页 |
| Appendix 1: Bulk chemical composition (ICPMS data) of metalliferous sedimentsfrom WHF and Ridge flanks | 第109-110页 |
| Appendix 2. EPMA data on chalcopyrite grain separate from Wocan-1 and Wocan-2hydrothermal site | 第110-111页 |
| Appendix 3. EPMA data on pyrite grain separate from Wocan-1 and Wocan-2hydrothermal site | 第111-112页 |
| Appendix 4. EPMA data on sphalerite grain separate from Wocan-1 and Wocan-2hydrothermal site | 第112-113页 |
| Appendix 5. Analytical equipment and approach methodology | 第113-114页 |
| Appendix 6. Authored works 1 | 第114-116页 |
| Appendix 7. Authored works 2 | 第116-118页 |
| Biography | 第118-123页 |
