GEOL 1 Chapter Notes - Chapter 6: Marine Reptile, Asthenosphere, Shear Stress
21 Sep 2020
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Fault physical displacement (4 types from eq lecture) Fold a bend or curve of a rock layer. Strain change in shape (stretching, shortening, shearing) Stress push, pull, or shear force that a material feels; causes distortion. Most mountain ranges are located along present and past convergent boundaries and collision zones. Isostasy = the buoyant condition of the earth"s crust floating in the asthenosphere. Appalachian mts started in the early paleozoic period and peaked in the late paleozoic. Nitrogen (most common); oxygen (2nd most common) #4 first animals about 570 mya. #5 paleozoic the age of fish long periods of sedimentation (open seas) punctuated by mountain building. Evolution of continents formed successful continental collusion (pangaea) in the late paleozoic. Very warm; some cold time in late paleozoic. In early paleozoic, al located in southern hemisphere. The appalachian mountains formed by the collision between north america and africa. The peak of the mountains occurred in the late paleozoic.
