EESA06H3 Chapter Notes -Leading Edge, Supercontinent Cycle, Mount John Laurie
26 Apr 2012
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Document Summary
Tectonics the study of the origin and arrangement of the broad structural features of the earth"s surface including folds, faults, mountain belts, continents, and earthquake belts. Plate tectonics the earth"s surface is divided into a few large, think plates that move slowly and change in size. Plate boundaries plates move away from one another, past one another, or towards one another. Eight large plates/smaller plates makes up the outer shell of the earth (the crust and upper part of the mantle) Continental drift continents move freely over the earth"s surface, changing their positions relative to one another. A hypothesis that the sea floor forms at the crest of mid-oceanic ridges, then moves horizontally away from the ridge crest toward an oceanic trench. Two sides of the ridge are moving in opposite directions. Alfred wegener: meteorologist, continental drift, examined continents that have identical late paleozoic rocks and fossils.
