ESC 103 Lecture Notes - Lecture 2: Divergent Boundary, Terrane, Appalachian Mountains
Document Summary
Building mountains: deformation, stress/strain, orogenesis, faults and folds, building the appalachians. Folds at surface is example because they do not happen at surface so they ad to go up. Elongate, linear, occurs along a line not perfect but can trace them. Forces acting tectonically by pressure, tension, shear not weathering or erosion. Joints, when move is called a fault. Folds: layers bent by slow plastic ow. Know deformed if it has tilts or is slanted. Tensional force causes hanging wall to move down. When hanging wall moves down its a normal fault. Brittle faults can be distinguished from ductile faults. Thrust fault also known as thrust fault. Stack fault blocks on top of one another. Accretion at subduction zones drag fragments of lithosphere and add them to overriding plate. Stretches or lengthens rocks and causes them to crack and break because above surface.
