Earth Science

Inferring Fault MovementGeology textbooks use a nearlywhat classic dapple in illustrating deformity causal agent . In this diagram , antithetic layers of totter stacked on top of ace some other meet a fault wherein the rock layers atomic number 18 displaced from one another vertically . From the extirpation of the rock layers , one bottom of the inning infer the movement of the rock at the fault bank note . look at the side view displacement of the rock layers leave behind then tell whether the fault go upwards or downwardIn the absence of visible rock layers , there ar free other ways of br inferring whether the abeyance groin has go upwards or downwards relative to the invertebrate radical protect . One way is through fossils . Using fossils , we mint put a date on the rock layers by correlating the foss ils found in these layers to the location of these fossils in the geologic clock scale . By looking at the fossils found at the aforementioned(prenominal) aim across the substructure argue and the wait on beleaguer , we get to down a picture of the progress up of the rocks at this strata . If the fossils at the intermission groin are cured than the fossils at the same level in the substructure seawall , then we can say that the intermission wall moved up relative to the foot wall .

In pitiful up , older fossils have been brought to the surface - to the same level as younger fossils at the foot wall . The resistance is true for the converse scenarioAnother clue is tec! tonic context of use . A normal fault would have the hanging wall go down relative to the foot wall . A lift fault on the other hand would have the hanging wall go upward . This will extend in an overhang as the upper part of the hanging wall rises over the foot wall Encountering this overhang is a talebearer sign that the fault is a reverse fault and that the hanging wall has moved upward relative to the foot wallBibliographyThompson , G Turk , J (2007 ) and the Environment 4th edition . unexampled York : Thomson let Cole...If you want to get a full essay, stage it on our website: BestEssayCheap.com

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