Advanced petrology | INSTITUT DE PHYSIQUE DU GLOBE DE PARIS

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  Advanced petrology

Nombre d'ECTS : 
3
Programme : 
  • Pétrologie et contextes géodynamiques (3x4 heures de TP)
  • Accrétion océanique: manteau, magmatisme à la dorsale, hydrothermalisme océanique
  • Subduction: métamorphisme de HP, magmatisme d’arc insulaire
  • Collision continentale: métamorphisme continental, anatexie et granites d’anatexie
  • Pétrologie: approches quantitatives (16 heures de cours et TD)
  • Techniques d’observation et d’analyse: visites d’instruments (microsondes, MEB, Raman)
  • Stoechiométrie, chimiographie: application de l’algèbre linéaire
  • Evolution P-T des roches, rôle des fluides: application de la thermodynamique

Advanced petrology

Aim: to learn to decipher the dynamics of the Earth by studying rocks

 

  • Petrology: Quantitative approaches (15 hours of lectures and tutorials) :

P-T evolution of rocks, role of fluids: application of thermodynamics

Stoichiometry, chemography: application of linear algebra

Observation and analysis techniques: Instruments (Microprobes, SEM, Raman)

  • Quantification of Pressure and Temperature (15 hours of lab practical)

Pseudosection modeling

Characterization of mineralogy and mineral chemistry (Probe, SEM)

Individual research mini-projects on natural samples (thin sections)

  • Evaluation : Exam on theoretical bases and quantitative petrology exercices

Presentation of P-T results (5’ each) + discussion of issues and solutions

 

Field petrology

Aim: Understand the deep structure of the Alpine belt and reconstruct its dynamics of formation

 

  • Metamorphism : watch the evolution of Alpine metamorphic imprint across the belt (from Chamonix to the Po Plain through the Aosta valley)

 Understanding the phase relationships from greenschist to eclogite-facies

 Identification of mineral phases

  • Deformation : study rock deformation at various grades from shallow brittle conditions (Mt Blanc massif) down to high pressure conditions (Zermatt-Saas and Sesia massifs, Italy)
  • Geodynamics : Understand the 3D nappe structure and its emplacement during early Cenozoic. Reconstruct the full tectonic history from Jurassic rifting until collision between Europe and Africa
  • Evaluation : Identification of hand specimen in the field . Mini-report (groups of 3 pers.) on a general geodynamic/petrologic problem using obs. from the field

 

 

 

Évaluation Session 1 CC : 
30.00%
Évaluation Session 1 CT : 
70.00%
Volume horaire Cours : 
16h
Volume horaire TP : 
12h