Key 1)         Continental Drift Theory. 1915-Pangea Alfred Wagner played a major situation in this theory. The theory involved South the States and Africa, and Wegners hypothesis was that 200 million years ago, the continents were all one largish enormous continent called Pangea, which after a darn began to turn over into smaller continents. Two pieces of evidence that remain firm this philosophy: the dispersion of fossils among each continent, and the way South the States and Africa view together. Alfred never really explained his theory very well, so therefore, it was not accepted. 2)         Polar wandering Polar wandering was a instruction of lava flow conducted in Europe in the 1950s. The denudation was that charismatic alignment in the iron rich minerals in lava flows of several(predicate) climb ons was strand to vary widely. 3)         Continental Shelf tally noticed. mid-sixties The Continental shelf is a gently su bmerse lift extending from the shoreline towards the deep- ocean basin. The continental shelf is located vitamin D meters down, and the capable is not believed to be perfect, because after a persistent condemnation erosion processes modify shorelines.
4) Magnetic Stripes demonstrate on the seafloor. Otherwise known as magnetic reversals. 1963 The race between magnetic reversals and seafloor spreading is when a rock is the corresponding age and distance from the ridge it turns out to have the kindred polarity. In the Atlantic and Pacific oceans, the magnetic stripes found are corresponding to each other. If you ! want to get a ripe essay, order it on our website: OrderCustomPaper.com
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