Igneous Petrology@

» DJW's Metamorphic Petrology    Annotated links to material about metamorphic rocks, migmatites and granitoid rocks, and related areas of "hard-rock" geology.    http://www.earth.ox.ac.uk/~davewa/metpet.html

» Phase equilibria in metamorphic rocks - thermodynamic background and petrological applications    Several PDF documents explaining both basic and advanced petrological methods to infer metamorphic pressure-temperature paths.    http://www.mineralogie.uni-wuerzburg.de/will/phaseequilibria.html