Ultrahigh-Pressure Metamorphism

Preface

List of Contributors

Reviewers

1. Frontiers of Ultrahigh-Pressure Metamorphism

1.1. Introduction

1.2. Main Achievements: 25 Years On

1.3. Further Directions

1.4. Looking Forward

2. Diamond–Lonsdaleite–Graphite Relations Examined by Raman Mapping of Carbon Microinclusions inside Zircon at Kumdy Kol, Kokchetav, Kazakhstan

2.1. Introduction

2.2. Geological Setting

2.3. Analytical Procedures

2.4. Results

2.5. Discussion

2.6. Conclusions

3. Diamond and Other Possible Ultradeep Evidence Discovered in the Orogenic Spinel-Garnet Peridotite from the Moldanubian Zone of the Bohemian Massif, Czech Republic

3.1. Introduction

3.2. Geological Settings and Some Backgrounds

3.3. Petrography and Mineral Chemistry

3.4. Experimental

3.5. Varying Crystallinity of Graphite

3.6. Diamond

3.7. Crystal Orientation Relationship Between Clinopyroxene Lamellae and Host Chromian Spinel

3.8. Discussion

3.9. Conclusions

4. Diamond Formation from Amorphous Carbon and Graphite in the Presence of COH Fluids

4.1. Introduction

4.2. Materials and Methods

4.3. Results

4.4. Discussion

5. Origin of High-Pressure Disordered Metastable Phases (Lonsdaleite and Incipiently Amorphized Quartz) in Metamorphic Rocks

5.1. Introduction

5.2. Quartz Incipiently Amorphized Under Pressure

5.3. Lonsdaleite

5.4. Discussion

5.5. Conclusion

6. Origin and Metamorphic Evolution of Garnet Clinopyroxenite from the Sulu UHP Terrane, China

6.1. Introduction

6.2. Geological Outline

6.3. Sample Description

6.4. Analytical Methods

6.5. Chemical Composition of Whole Rock

6.6. Mineral Composition

6.7. Mineral Lamellae in C