EESA06H3 Chapter Notes - Chapter 3: Rock Magnetism, Unconformity, Bedform

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24 Oct 2012
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Tectonics is the study of the origin and arrangement of the broad structural features of the earths surface, including not only folds and faults, but also mountain belts, continents, and earthquake belts. Plate tectonics- earths surface is divided into a few large, thick plates that move slowly and change in size. Intense geologic activity occurs at plate boundaries toward one another. The eight large plates and few dozen smaller ones make up the outer shell of the earth (crust and upper part of mantle) Plate tectonics can tell us about earthquake distribution, origin of mountain belts, origin of sea floor topography, distribution and composition of volcanoesplate interactions at plate boundaries. In early 1900s alfred wegener, a german meteorologist made a strong case for continental drift. He noted that south america, africa, india, antarctica, and australia had almost identical late paleozoic rocks and fossils.

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