Exercise 6 - of magma is called igneous rock. This magma...

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Scott Pagan Exercise 6 Igneous Rock is by far the most interesting type of rock and there is no better display of igneous rock in the national parks then Devil’s Tower. Located on the border of Wyoming and South Dakota, Devil’s Tower, is a pillar looking structure that stands tall around 900 feet. You can also see this landmark around for 30 miles. Nevertheless, it is not all about how Devil’s Tower looks; most people do not realize how lucky we are to have this behemoth. It was kind of like the perfect storm but in a good way. First, there was a thick layer of sediment nearly two miles deep. This sediment layer was made up of a lot of soft material like, sand, mud, and other sediments. As more and more layers of sediment continue to pile up, it turns soft sediment into hard rock. Next, the Black Hills, where Devil’s Tower is located, began having tectonic shifts like faults and fractures. Then magma began to grow in hot spots underneath the layer of sediment, this formation
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Unformatted text preview: of magma is called igneous rock. This magma pushed through the sediment layers of the earth and formed a hard spot as it cooled down. Devils Tower was formed around 50 million years ago. Even though the magma was pushing through the layers of sediment, it could not break the surface layer. However, there was uplift in the area as well as the region and this caused the land to rise. This caused nearby rivers, such as the Belle Fourche River, to wash away the layers of sediment. You may notice a difference between the top and bottom of the tower; this is because of weathering as the tip of the tower was becoming exposed. The scientific method that is mentioned because it assumes which way exactly, how magma formed as it protruded into the layer of sediment. It applies to the tower because it explains the past events of the world. It is also most likely that the magma formed a pluton....
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This essay was uploaded on 04/19/2008 for the course GEO 2160 taught by Professor Harden during the Spring '08 term at University of South Florida - Tampa.

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Exercise 6 - of magma is called igneous rock. This magma...

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