Plate Tectonics Paper

1876 words 8 pages
Running Head: Plate Tectonics Paper

Plate Tectonics Paper
University of Phoenix

Plate Tectonics Paper Earthquakes, volcanoes, mountains and the Earth’s crust are unique yet have one common denominator; the amazing topic of plate tectonics. Plate tectonics has a place or specifically places a role in each of these natural wonders of the world. In the following, Team C will discuss the theory of plate tectonics and how the theory shaped the form and composition of the movement within the Midwest region of the United States. A discussion of various geological events and the types of rocks that formed because of these events will also be covered including the importance of the economic value of these rocks to the Midwest region
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The rifting ceases and then the ocean advances over the area. The sand, clay and gravel are not deposited deep or long enough to become rock (Wikipedia, 2010).
Barite, calcite, carnotite, dolomite, feldspar, galena, geodes, hematite, limonite, marcasite, metatorbernite, mica, pyrite, quartz, gold, silver, gypsum and sphalerite are some of the other types of rocks found in the Midwest (Dreyer, 2004).
Relationship between characteristics of rocks and geological event
The igneous rock forms as magma cools and crystallizes. Magma consists mainly of silicon and oxygen, and to a lesser extent, aluminum, iron, calcium, sodium, and potassium (Tarbuck & Lutgens, 2006, p. 54). The magma moving along the fault cooled before reaching the surface, and crystallized at depth.
Sedimentary rocks are formed as layers of sediment accumulate and the weight of each layer compresses the deeper layers. Cementation is another means of forming sedimentary rock. Cementing materials are carried by water that seeps through the pore spaces between particles, and eventually join the particles by filling the open spaces. The limestone found in the area originates from sediment of soluble material produced by chemical weathering. Limestone’s main ingredient is the mineral calcite and forms “[…] when chemical changes or high water temperatures increase the concentration of calcium carbonate to the point that it precipitates” (Tarbuck & Lutgens, 2006, p. 64).
Importance and economic value

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