Free Essays Must Be Free! Waste no more time! The German meteorologist Alfred Wegener proposed the first comprehensive theory of continental drift inon the basis of the way the continents fit together on the opposing Atlantic coasts and paleontology correlation on both sides of the Atlantic.
Could there have been one supercontinent that over time broke off into the continents we know now? Merriam-Webster Dictionary defines Pangaea as a hypothetical land area believed to have once connected the landmasses of the southern hemisphere with those of the northern hemisphere Definition of Pangaea.
This theory, discovered by Alfred Wegener, was known as the drift theory. He believed that over million years ago the continents had formed a single mass, which he named Pangaea, meaning "all the Earth" in Greek. That massive continent first broke into two large landmasses, Laurasia in the northern hemisphere and Gondwanaland in the southern hemisphere Continental Drift.
They continued to part and eventually formed the continents that are known today. Beneath the bulge of Africa, Brazil fits nicely and the coast of North America fits the bulge of Africa. When pieced together, the continents resembled a giant jigsaw puzzle.
Wegner also studied the distribution of major geological bodies, such as rocks, continental crust, and mineral deposits.
He found patterns amongst the same type of rocks in the continents of Africa and South America. The distinctive rock strata of the Karoo system in South Africa, which consists of layers of sandstone, shale and clay laced with seams of coal, were identical to those of the Santa Catarina system in Brazil An Introduction to Plate Tectonics.
Another factor to support his theory was the glaciers. Wegener was aware that a continental ice sheet covered parts of South America, southern Africa, India, and southern Australia about million years ago.
Glacial striations on rocks show that glaciers moved from Africa toward the Atlantic Ocean and from the Atlantic Ocean onto South America. Such glaciations are most likely if the Atlantic Ocean was missing and the continents joined Evidence Supporting Continental Drift.
This finding indicates that this life form must have evolved on the same single land mass.
These two continents are separated by the Atlantic Ocean, which would have made it physically impossible for these creatures to have swum or been moved across the wide area of water.Glacial striations on rocks show that glaciers moved from Africa toward the Atlantic Ocean and from the Atlantic Ocean onto South America.
Such glaciations are most likely if the Atlantic Ocean was missing and the continents . Continental Drift Continental drift is the theory that the positions of the earth's continents have changed a lot through geologic time. The German meteorologist Alfred Wegener proposed the first comprehensive theory of continental drift in , o.
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The major surface features of the earth are the continents and ocean basins.
Of the whole surface, less than one third is a land mass and the rest is covered with water. Plate Tectonics essaysPlate tectonics is a recently developed science, and it can be used to explain a lot of phenomena on the Earth, such as earthquakes. There are actually two big fundamental theories of plate tectonics.
One of the basic theories is called continental drift, and the other one is t. Continental drift essay. Facebook 0. essay essay on punjabi virsa in punjabi language dictionary movie comparisons essays mercy killing essay thesis short essay on world hunger british health care system essay claim evidence warrant essay opinion essay introductory paragraph hundred words essay proscriptive relationship movie.