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CONTENTS

CONTRIBUTORS

PREFACE

Part I Chemical Microstructure/Zoning

Chapter 1 Zircon as Magma Monitor: Robust, Temperature-Dependent Partition Coefficients from Glass and Zircon Surface and Rim Measurements from Natural Systems

1.1. INTRODUCTION

1.2. THE SAMPLE SET

1.3. METHODS

1.4. RESULTS: CALCULATED ZIRCON Kds

1.5. DISCUSSION AND IMPLICATIONS

1.6. IMPLICATIONS AND APPLICATIONS

1.7. CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES

Chapter 2 Petrology and Geochronology of Metamorphic Zircon

2.1. INTRODUCTION

2.2. HOW DOES METAMORPHIC ZIRCON FORM?

2.3. ANALYTICAL STRATEGIES

2.4. INCLUSION ASSEMBLAGES

2.5. WHAT DOES METAMORPHIC ZIRCON CHEMISTRY TELL US?

2.6. EXAMPLES

2.7. RECOMMENDATIONS

ACKNOWLEDGMENTS

REFERENCES

Chapter 3 Origins of Textural, Compositional, and Isotopic Complexity in Monazite and Its Petrochronological Analysis

3.1. INTRODUCTION

3.2. ORIGINS AND APPLICATIONS OF COMPLEX ZONING TEXTURES IN MONAZITE

3.3. DIFFUSION IN MONAZITE

3.4. CASE STUDIES OF MONAZITE TEXTURE DEVELOPMENT IN NATURAL SYSTEMS

3.5. ISOTOPE DISTRIBUTION IN TEXTURALLY COMPLEX MONAZITE

3.6. EXPLOITING COMPOSITIONAL COMPLEXITY IN MONAZITE FOR GEOCHRONOMETRY AND ISOTOPE STUDIES

3.7. EXAMPLES AND APPLICATIONS OF LA‐ICP‐MS

3.8. CONCLUDING REMARKS

ACKNOWLEDGMENTS AND DATA

REFERENCES

Chapter 4 Application of Single-Shot Laser Ablation Split-Stream Inductively Coupled Plasma Mass Spectrometry to Accessory Phase Petrochronology

4.1. INTRODUCTION

4.2. METHODS

4.3. SS-LASS ANALYTICAL CONSIDERATIONS

4.4. APPLICATIONS

4.5. PETROCHRONOLOGY AT THE GRAIN-SCALE

4.6. DISCUSSION AND SUMMARY

4.7. CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES

Chapter 5 Comparing Chemical Microstructures of Some Early Solar System Zircon from Differentiated Asteroids, Mars and Earth

5.1. INTRODUCTION

5.2. SAMPLES AND METHODS

5.3. RESULTS

5.4. DISCUSSION

5.5. CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES

Chapter 6 Crystallization of Baddeleyite in Basaltic Rocks from Mars, and Comparisons with the Earth, Moon, and Vesta

6.1. INTRODUCTION

6.2. METHODS FOR FINDING AND IMAGING BADDELEYITE

6.3. OCCURRENCES OF BADDELEYITE IN PLANETARY BASALTIC ROCKS

6.4. GENERALIZATIONS AND IMPLICATIONS

ACKNOWLEDGMENTS

REFERENCES

Part II Orientation Microstructure

Chapter 7 Strength and Deformation of Zircon at Crustal and Mantle Pressures

7.1. INTRODUCTION

7.2. METHODS

7.3. RESULTS

7.4. DISCUSSION

7.5. CONCLUSION

ACKNOWLEDGMENTS

REFERENCES

Chapter 8 Role of Elastic Anisotropy in the Development of Deformation Microstructures in Zircon

8.1. INTRODUCTION

8.2. ELASTIC ANISOTROPY OF MINERALS

8.3. ZIRCON: PROPERTIES, DEFORMATION MECHANISMS, AND MICROSTRUCTURES

8.4. ELASTIC PROPERTIES OF ZIRCON

8.5. APPROACH AND METHODS

8.6. ELASTIC ANISOTROPY OF ZIRCON

8.7. DISCUSSION

8.8. CONCLUSIONS

ACKNOWLEDGMENTS

APPENDIX

REFERENCES

Chapter 9 The Rietputs Formation in South Africa: A Pleistocene Fluvial Archive of Meteorite Impact Unique to the Kaapvaal Craton

9.1. INTRODUCTION TO DETRITAL SHOCKED MINERALS

9.2. GEOLOGICAL BACKGROUND

9.3. SAMPLES AND METHODS

9.4. RESULTS

9.5. DISCUSSION

ACKNOWLEDGMENTS

REFERENCES

Chapter 10 Deciphering the Effects of Zircon Deformation and Recrystallization to Resolve the Age and Heritage of an Archean Mafic Granulite Complex

10.1. INTRODUCTION

10.2. REGIONAL GEOLOGY

10.3. RESULTS

10.4. DISCUSSION

10.5. CONCLUSIONS

ACKNOWLEDGMENTS

APPENDIX

REFERENCES

Chapter 11 Alpha Recoil Loss of Pb from Baddeleyite Evaluated by High-Resolution Ion Microprobe (SHRIMP II) Depth Profiling and Numerical Modeling: Implications for the Interpretation of U-Pb Ages in Small Baddeleyite Crystals

11.1. INTRODUCTION

11.2. METHODS

11.3. RESULTS

11.4. DISCUSSION

11.5. CONCLUSIONS

ACKNOWLEDGMENTS

APPENDIX

REFERENCES

Chapter 12 Transmission Electron Microscope Imaging Sharpens Geochronological Interpretation of Zircon and Monazite

12.1. INTRODUCTION

12.2. SAMPLE PREPARATION

12.3. STRUCTURAL AND CHEMICAL EVIDENCE FOR NANO‐INCLUSIONS AFFECTING THE U-TH-PB SYSTEMATICS IN MONAZITE AND ZIRCON

12.4. NANOSCALE CONSTRAINS ON THE RESETTING MECHANISM OF U-Th-Pb SYSTEMS IN EXPERIMENTALLY ALTERED MONAZITE

12.5. NANO‐PETROCHRONOLOGY OF MONAZITE

12.6. CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES

Part III 3D Nanostructure

Chapter 13 Detecting Micro- and Nanoscale Variations in Element Mobility in High-Grade Metamorphic Rocks: Implication for Precise U-Pb Dating of Zircon

13.1. INTRODUCTION

13.2. THE ISSUE OF REVERSELY DISCORDANT DATA

13.3. LOCATIONS WHERE ANCIENT Pb MOBILIZATION HAS BEEN IDENTIFIED

13.4. RECOGNIZING ANCIENT Pb MOBILIZATION

13.5. LEAD NANO-INCLUSIONS AND THE FORMATION OF Pb CLUSTERS

ACKNOWLEDGMENTS

REFERENCES

Chapter 14 The Optimization of Zircon Analyses by Laser‐Assisted Atom Probe Microscopy: Insights from the 91500 Zircon Standard

14.1. INTRODUCTION

14.2. MATERIALS AND METHODS

14.3. DATA

14.4. RESULTS AND DISCUSSION

14.5. CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES

Chapter 15 Atom Probe Tomography of Phalaborwa Baddeleyite and Reference Zircon BR266

15.1. INTRODUCTION

15.2. BACKGROUND

15.3. METHODS

15.4. RESULTS

15.5. DISCUSSION

15.6. CONCLUSION

REFERENCES

Chapter 16 Uncertainty and Sensitivity Analysis for Spatial and Spectral Processing of Pb Isotopes in Zircon by Atom Probe Tomography

16.1. INTRODUCTION

16.2. SAMPLES AND METHODS

16.3. RESULTS AND DISCUSSION

16.4. CONCLUSIONS

ACKNOWLDGMENTS

REFERENCES

Chapter 17 Complex Nanostructures in Shocked, Annealed, and Metamorphosed Baddeleyite Defined by Atom Probe Tomography

17.1. INTRODUCTION

17.2. GEOLOGICAL BACKGROUND AND SAMPLE SELECTION

17.3. APT METHODOLOGY

17.4. APT OF SHOCKED BADDELEYITE

17.5. FORMATION OF CHEMICAL NANOSTRUCTURES IN SHOCKED BADDELEYITE

17.6. IMPLICATIONS FOR TRACE ELEMENT AND ISOTOPE ANALYSIS OF BADDELEYITE

17.7. CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES

Chapter 18 Best Practices for Reporting Atom Probe Analysis of Geological Materials

18.1. INTRODUCTION

18.2. REPORTING

REFERENCES

Index

Supplemental Images

EULA