The course looks in the distribution, minerals association, and chemical composition of the rocks that compose the crust and upper mantle and relating them to various tectonic environments. The course also investigates the genesis, classification, textures of constituent minerals, structure and modes of occurrence of igneous, sedimentary and metamorphic rocks. The concepts of chemical equilibrium and reactions, the phase rule, binary and ternary systems will be the foundation of the course. Additional topics include the dynamics of crustal and mantle melting as preserved in the chemical composition of minerals of igneous rocks and the time-temperature-depth record preserved in minerals of metamorphosed crustal rocks.