Plate Tectonics Theory
Most people know about the prehistoric land that scientists have named Pangaea, but few know what it looked like, was like, and how it separated over millions of years. The hypothesis is now widely accepted and may soon become scientific law. I will explain the plate tectonics theory, Pangaea's climate and environment, and how the earth's plates are continuing to move. Along the same lines, scientists have found it difficult to trace the movements of the continents that occurred very early in the earth's history. However, a general picture can be constructed from a combination of evidence from various scientific fields. Early in history, there were probably two or three super continents that formed, broke up, and re-formed as lithospheric plates drifted slowly around the earth. Alfred Wegener first hypothesized the
Following this, about two hundred million years ago, Pangaea began to break apart. It started to form two different landmasses. Just north of the equator a great east-west rift split the super continent, nearly separating Gondwanaland and Laurasia. They stayed connected only where the southern tip of Spain touched the northwestern coast of Africa. As a rift and small sea formed east of this connection, Laurasia began to rotate slowly in a clockwise direction. A little while later, both Gondwanaland and Laurasia began to split, creating four major continents. Present day South America broke away from Africa and India slid from its former position, connected with Antarctica and Australia. Later, the Himalayas formed as the last of the continents broke apart, India colliding with Eurasia and Antarctica splitting from A
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Approximate Word count = 552
Approximate Pages = 2 (250 words per page double spaced)
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