EESA06H3 Final: FINAL-EXAM-NOTES
Document Summary
Changes in bedrock are caused by powerful forces originating deep within the earth. To understand earthquakes, you must know about faults. To understand mountain ranges evolvement, you must know faulting and folding. Structural geology the branch of geology concerned with the shapes, arrangement, and interrelationships of bedrock units and the forces that cause them. Tectonic forces move and deform parts of lithosphere (through push or compression), particularly along plate margins, changing its orientation, location, and shape of rock body. We can observe effects of past stress caused by tectonic forces when rock bodies are exposed after uplift and erosion. Strain, is the change in size (volume) or shape, or both, in response to stress. Compressive stress pushed together or squeezed from opposite directions. Compressive stress is common along convergent plate boundaries and typically results in rocks being deformed by a shortening strain. Tensional stress is caused by forces pulling away from one another in opposite directions.
