CheckPoint: Metamorphic Rocks Metamorphism occurs when there is a mineralogical, textural, chemical, and structural change in rocks that happens when rocks are exposed to high temperatures and pressures. Metamorphic rocks originate from beneath the earth’s continental curst and above the earth’s mantel (Murck, Skinner, Mackenzie, 2008). This is where the per-exiting rocks are exposed to high temperature and pressure which spaces and forms them into metamorphic rocks. Formation of
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Metamorphic Rocks University Of Phoenix By: Laurea Pruitt August 29, 2010 Where do metamorphic rocks originate? Metamorphic rock is produced from pre-existing rock that is altered, but not melted by heat and pressure deep below the earth's surface. Common metamorphic rocks include marble, which forms from limestone, and slate from shale or mudstone. If the pressure and heat increase to the point where the rock melts, magma forms to produce new igneous rock. They originate from non-metamorphic
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Metamorphic rocks We will be talking about Metamorphic rocks. How they were made. How they beacom rocks. Also, why there there here in life and how they became on this are. Also, where they are placed around the globe. Making over 12% of the Earth’s landmass. Metamorphic rocks are formed through the metamorphosis, or transformation. metamorphosis can be achieved through either extreme pressure or heat. Some examples of foliated metamorphic rocks include slate, gneiss and schist. Some examples of
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Earthquakes and fault lines Scientists and geologists have a pretty good understanding of how the plates move and how this is related to earthquake activity. There are four different types of plate boundaries. First we have Divergent boundaries, where new crust is generated as the plates pull away from each other. Second we have Convergent boundaries and this is where the crust is destroyed as one plate is forced under another. Third we have the transform boundaries and this is where the crust
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shear/suture zones. The terrain has witnessed 550 Ma old granulite events (high temperature metamorphism) which occur well south of the broad Palaghat-Cauvery shear zone. It is evidenced that the Palghat Cauvery shear zone itself contains the older rocks like 3.0 Ga Sittampundi anorthosite and the younger Tiruchengodu granite of 660 Ma old (Bhaskar Rao et al., 1996). SGT is characterized by the presence of few major shear zones and deep crustal faults and is bounded by shear zone/fault immediately
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discuss the principles used to define relative age. Discuss isotopic dating: what atomic particles are involved, what are some common isotopes that are used, and what are some uses of isotopic dating? Be sure to explain the calculation of the age of a rock. Relative dating is telling us the age of something compared to that of the substances around it, more plainly stated the sequence of events. Absolute dating tells how old something is, an amount of time can be associated with an object unlike in
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Introduction: Every aspect of our surroundings, everything we witnessed at the two sites that we visited and everything geologically related can be tied together with a few simple concepts. A central component of those simple concepts is known as the Wilson Cycle. The Wilson Cycle has a massive impact on not only the two sites that we visited, but literally everywhere around the world. By understanding the principles of the Wilson Cycle, we are able to unearth details about a location such as
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Introduction Chlorite is a general name for a group of magnesium rich hydrous sheet silicates possessing similar structure and chemical composition. Many green rocks owe their color to chlorite and chlorite owes its name to its green color. The Greek word choros, meaning “green,” is the origin of chlorite’s name. Consisting of negatively charged mica-like (2:1) layers regularly alternating with positively charged brucite-like (octahedral) sheets, the basic structure of chlorites allows for various
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Abstract Central Texas contains Precambrian rocks, which were exposed due to the Llano uplift. This paper looks further into the Devil’s Waterhole of Ink’s Lake to get a better understanding of the area. First the geology of the Llano uplift is studied to get a better understanding of how the rocks in the area were formed. The rocks in the area, which consists of Valley Springs Gneiss and Town Mountain Granite, are studied even further to see the composition of each and how each was formed. The
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Every Rock Tells A Story They say every rock tells a story, but I believe there is much more to learn than that. The rock I discovered was no ordinary rock. It's size, texture, smoothness, color, and many other observations told me everything I needed to know to find out what kind of rock it was. My rock was a medium sized rock, about three inches long and one inch wide. It is composed of very tiny sediments, almost microscopic, with an arrangement of colors. Its edges are very rigid, and had
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