Composition and Classification of magmatic rocks on mineral composition, chemical composition, using a. the QAPF and the TAS schemes b. Using trace elements c. Using radiogenic and stable isotopes.
Introduction to crystal-melt equilibria and phase diagrams to understand origin and evolution of textures of plutonic and volcanic rocks. Introduction to chemical dynamics of melts and crystals. Understanding magma generation: a. Mantle source rocks, generation of magma in mantle peridotite, b. subarc mantle melting c. metasomatically enriched mantle peridotite and d. continental crust.
Understanding differentiation of magma: Variation diagrams, closed and open systems, Differentiation in basaltic magmas and the calc-alkaline trend.
Plate tectonics and igneous petrogenesis: Oceanic spreading centers and MORB genesis, Mantle plumes and flood basalt plateaus, Arc magmatism (oceanic, ophiolitic, calc-alkaline continental arcs), Continental collision zones, Continental rift zones, Anorogenic magmatism,
Metamorphism its definition, types, agents and structures and textures of metamorphic rocks.
Understanding metamorphic reactions, their driving forces and reaction rates. Concept of equilibrium in metamorphism and causes of metastable persistence of metamorphic rocks, zonal metamorphism and isograds and metamorphic facies and mineral assemblages of pelitic, quartzofeldspathic, basic, ultrabasic and calcareous bulk composition in response to progressive metamorphism and high-grade metamorphism.
Deciphering relation between metamorphism and deformation, metamorphic reactions involving solid solutions and mixed volatiles.
Inferring the P-T-deformation-time evolution of metamorphic terrains and its relationship with tectonism and crustal evolution.
Prerequisite: Mineralogy and Geochemistry (ES3101)
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