Content:
Introduction to the basic questions in petrological research; how metamorphic rocks can be used to answer geodynamic questions. Crystal chemical basis (coordination polyhedral, exchange vectors). Representation of minerals in chemographic diagrams. Gibbs phase rule. Topology of phase diagrams and thermodynamic basis.
Types of metamorphism: Regional – limited (cataclastic, mylonitic, contact); Regional – extended (Burial, orogenic). P-T-t evolution due to crustal thickening and extension. Subduction, magmatic underplating.
Metamorphic zones and Facies series. Barrow type, Abukuma type, Subduction type.
Types of metamorphic equilibria: Solid-gas equilibria (dehydration reactions, decarbonation reactions, redox reactions). Solid-solid reactions (Influence of solid solution on location of phase boundaries, divariant thermometers, divariant barometers). Trace element thermometers.
Zoning in minerals (diffusion controlled growth, retrograde Fe-Mg exchange).
Mass transport in metamorphism (Fluid flow, metasomatism).
Observations of metamorphic evolution of model systems (Ultramafics, metabasics, calc-silicates, metapelites).
Basics of geochronology of metamorphic rocks.
- Kursleiter/in: Niels Wolfgang Reinhold Jöns