|
|
Words You Should Know Stress: A force that acts on rock to change its shape or volume. Shearing: Stress that pushes a mass of rock in opposite directions. Tension: Stress that stretches rock so that it becomes thinner in the middle. Compression: Stress that squeezes rock until it folds or breaks. Deformation: A change in the volume or shape of earth's crust. Fault: A break or crack in earth's lithosphere along which the rocks move. Strike-slip fault: A type of fault where rocks on either side move past each other sidways with little up-down motion. Normal fault:A type of fault where the hanging wall slides downward;caused by tension in the crust. Reverse fault: A type of fault where the hanging wall slides upward;caused by compression in the crust. Fault block mountain: A mountain that forms were a normal fault lifts up a block of rock. Folds: Bend in rock that forms were part of earth's crust is compressed. Plateau: A landform that has a more or less level surface and is elevated high above sea level.
|