Essay on Rocks and Dates Geology Analysis

Essay on Rocks and Dates Geology Analysis

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The Grand Canyon is a wonderful place to gain a sense of how old the earth really is because of the ability to date the layers of rock in the canyon. The Rocks exposed in Grand Canyon are truly ancient, ranging from 1840 million years old or 1.84 billion years old (to 270 million years of age. (Beus, and Morales, 2003). While the Grand Canyon is not old in comparison to much of the earth, it is considered young earth because it was slivered by an ie in the last six million years. This gives the rocks in the Canyon Ice age fossils and new deposits, in the grand scheme of things. Some of the younger deposits in the Canyon are only a thousand years old and are the result of lava that began to come into the geographic. It is the walls of the Canyon that hold strong fossil recording. Originally these rocks formed in environments that were different from the one that is in Arizona now. There are three era of rocks in the Canyon and each is different. This paper will explore the three ages of rock, and look at “old earth” and the “young earth” as it is recorded in the Canyon, while also seeing how this is determined.
The first layer of rock that this paper will examine is known as the Vishnu Basement Rocks and is Precambrian. They are recrystallized as a result of heat and pressure, and igneous. This means they were exposed to fire. (Dehler, et al, 1999) These stones are found along the Granite Gorge. They were formed by colliding as a result of volcanic action and the heat from that formed the igneous rock. Mountains were formed along the top of the rock. These are like basement rocks to the mountains on top of them. They are the oldest rocks in the Canyon. The rocks are located in what is called the “Inner Gorge” and there are at ...


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References

Bailey, A. M. (2012). Lithics on the edge: Flaked stone assemblages from grand canyon national
park. (Order No. 1531494, Northern Arizona University). ProQuest Dissertations and Theses, , 531. Retrieved from http://login.ezproxy1.lib.asu.edu/login?url=http://search.proquest.com/docview/1272126641?accountid=4485. (1272126641).
Ilg, Bradley R., Karlstrom, Karl E., Hawkins, David P., and Williams, Michael L., 1996,
Tectonic evolution of Paleoproterozoic rocks in the Grand Canyon: Insights into middle-crustal process: Geological Society of America Bulletin,.
Karlstrom, K.E., Ilg, B.R., Williams, M.L, Hawkins, D.P., Bowring, S.A., and Seaman, S.J.,
2003, Paleoproterozoic rocks of the Granite Gorges, in Grand Canyon Geology, second edition, Beus, Stanley. S., and Morales, Michael, eds., Oxford University Press, p. 9 – 38.

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