Origin of the garnet rich layers

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Table of contents

Introduction
Eclogite facies metamorphism in the Haut-Allier (Massif Central)
Variscan eclogite- to granulite-facies metamorphism in the Haut-Allier (French
Massif Central): geodynamic implications
1. Introduction
2. Geological setting
3. Petrography and mineral chemistry
4. Interpretation of the petrographic observations
5. Pseudosections
6. Discussion
7. Conclusion
Petrogenetic investigations of garnet-rich layers in eclogites: evidence of partial melting at high pressure?
1. Introduction
2. Petrography and mineral chemistry of the garnet-rich layer
3. Pseudosection
4. Discussion
5. Conclusions
Petrologically constrained U-Pb dating of the “La Borie” eclogites
1. Introduction
2. Analytical methods
3. Petrological constraints on zircon, rutile and apatite
4. U/Pb results
5. Discussion
Petrologic study of French Variscan metagranites
1. Mineralogical indicators of HP metamorphism in metagranite
2. Methods
3. A petrologic study of Variscan metagranites
4. Discussion and implications of the petrological study of the metagranites
Petrologic study of metapelites from the Variscan Pyrenees
Two-stage Variscan metamorphism in the Canigou massif: evidence for crustal thickening in the Pyrenees
1. Introduction
2. Geological setting
3. Structural data
4. Petrography and mineral chemistry
5. P–T estimations
6. Geochronology
7. Discussion
8. Conclusions
General discussion and conclusions
References