EAS100 Lecture Notes - Lecture 8: Supercontinent Cycle, Isostasy, Lithosphere

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Marianas trench in philippines 11 km deep. Cratons core of very ancient rock groups that have formed over long periods of time. Craton stability is based off isostasy (property of lithospheric materials maintaining flotational balance): orogens longer regions of crust that have been bent and broken during continental collisions. Image taken from eas 100 lecture slides january 23, Thrust faults: due to compressive stress: 3. Strike-slip: due to shearing stress: the spot on a fault where the initial movement or break occurs during an earthquake is called the focus , the point on the earth"s surface directly above the focus is called the. If the blocks slip suddenly during an earthquake, the resulting intense vibrations are seismic waves which travel outwards from the focus: the rocks will snap back to their initial positions even after displacement . Elastic rebound : the distance of the displacement is known as the, seismic waves:

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