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Sagot :
Explanation:
Geologic history is the way into this aid and to understanding the story recorded in the stones of the Southeastern US. By finding out about the geologic history of your space, you can all the more likely comprehend the kinds of rocks that are in your terrace and why they are there. In this part, we will view the historical backdrop of the Southeast as it unfurled: as a progression of significant occasions that made and molded the region in the course of the last one billion years. These occasions will go about as the structure for the subjects in the sections to follow and will reveal insight into why our locale looks the manner in which it does.
At long last, Wegener examined the stratigraphy of various rocks and mountain ranges. The east shore of South America and the west shoreline of Africa appear to fit together like bits of a jigsaw puzzle, and Wegener found their stone layers "fit" similarly as plainly. South America and Africa were not by any means the only landmasses with comparable geography. Wegener found that the Appalachian Mountains of the eastern United States, for example, were topographically identified with the Caledonian Mountains of Scotland.
Pangaea existed around 240 million years prior. By around 200 million years prior, this supercontinent started separating. For more than a long period of time, Pangaea isolated into pieces that moved away from each other. These pieces gradually expected their situations as the mainland we perceive today. Today, researchers feel that few supercontinents like Pangaea have shaped and separated throughout the span of the Earth's life expectancy. These incorporate Pannotia, which was framed around 600 million years prior, and Rodinia, which existed in excess of a billion years prior.
Structural Activity Researchers didn't acknowledge Wegener's hypothesis of mainland float. One of the components ailing in the hypothesis was the system for how it functions—for what reason did the landmasses float and what examples did they follow? Wegener recommended that maybe the pivot of the Earth made the landmasses shift towards and aside from one another. (It doesn't.) Today, we realize that the landmasses lay on enormous pieces of rock called structural plates. The plates are continually moving and collaborating in a cycle called plate tectonics. The landmasses are as yet moving today. Probably the most powerful destinations of structural action are ocean bottom spreading zones and goliath break valleys.
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