GEOL 1001 : Exam 3 Notes
Document Summary
Orogen: mountains form at a linear range called this or mountain belt. Joints: cracks: faults: one body of rock slides past another, folds: bends, curves, and wrinkles of rock layers, foliation: layering of fabrics resulting from alignment of minerals grains or the development of compositional bands. Mountain-building may last for tens of millions of years. The application of forces in the earth indeed cause deformation. During deformation, rocks can undergo a change in one or more of the following: a change in location: displacement, a change in orientation: rotation, a change in shape: distortion or strain. Brittle deformation: cracking and breaking serve as: plate falling off table and shattering on floor, many bonds break and stay broken, leading to the formation of a permanent crack causing materials to no longer connect. Ductile deformation: objects change shape without visibly breaking: flattening a ball of dough under a heavy plate, some bonds break, but new bonds quickly form, no cracking involved.
