GEOL 1001 Chapter : CH 7 NOTES
Document Summary
Metamorphism: a process of change : metamorphic = changed from an original parent rock . Morph = form/shape: parent rocks -> protoliths , metamorphism can occur to any protolith- * rock cycle , protoliths undergo solid-state changes in . Reactions with heated water: metamorphic rocks have distinctive properties. Unique minerals: some that are only metamorphic. Unique foliation: a planar fabric from aligned minerals: these transformations can change the rock completely, metamorphic change occurs slowly in the solid state, several processes are at work: Plastic deformation: recrystallization: minerals change size and shape (without change in the, phase change: new minerals form with . Different crystal structure (rearrangement of atoms: e. g. , andalusite -> kyanite. Shale: clay, sio2, feo -> gneiss: biotite, sio2, feldspar, purple the mineral constituting the grains). metamorphic processes garnet pressure. Heat (temperature, t: neocrystallization: new minerals with changes in temperature and.
