Crust

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    non-traditional formation of the Rocky Mountains is the rock composition of the ranges in this area. The rock composition in these areas is not sedimentary like we would expect to see in the traditional convergent boundrie folding type of orogenic event. But rather, it is composed mostly of basal igneous rock that seems to have inexplicably risen up from deeper portions of the crust (Pendick and Denial, 1997). The second, and most problematic, question as to the formation of the Rocky Mountains is, how did the mountains form so far within the interior of the continent? The central and eastern portion of the Rocky Mountains is thought to have formed during the Laramide orogeny; which is believed to pre-date the Jurassic and early Cretaceous accretion of the terrenes that make up the North American cordillera. Meaning that this portion of the Rocky Mountains had to have formed 700-1500 km inboard from the nearest convergent plate boundary (English et al.…

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    contains mostly iron but in the form of silicate rocks. The mantle can also be divided into two portions, the upper mantle and the lower mantle. The lower mantle is completely solid since the pressure is too excessive for it to melt and flow. The upper mantle is also known as the asthenosphere, which flows as convection currents. Convection occurs in all fluids and is the rising of warm particles and sinking of cool particles. This convection flow of the asthenosphere has a large impact on…

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    researches have been able to map out the temperatures and densities of the Earth’s mantle. Furthermore, the creation of computer modeling has greatly enhanced the understanding the mantle by allowing scientists to create simulations of any part of the mantle that they don’t quite understand, helping them infer what is going on in the Earth’s crust. 2) Explain, with reference to superplumes and subducting tectonic slabs, what caused large regions like Colorado and Australia to first sink and…

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    Earth's Crust

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    The Earth's crust is constantly moving in all directions. The movement of the crust is called plate tectonics. Plate tectonics hasn't been developed very long, only about fifty years. It was founded by geophysicists in the 1960's. The continents fit together in one humongous piece. Which makes it one enormous continent. Wegener found out that there were numerous continents that looked comparable. He thought once in the past that parts of Africa and South America might have been…

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    The Marianas Mission

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    room notice seismic activity, indicating an underwater earthquake. A rock that split apart hits the ship. They also determine that they are in a crosscurrent spawned by the earthquake. Luckily, by the underwater crest splitting apart, their job at getting deeper into the Earth’s core has become a whole lot easier----if they can maintain control of their ship. The controllers at the briefing room indicate that the ship is going too fast in the crosscurrent. Brazzleton explains the ship does not…

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    To explain the continual process, Hutton’s theory added to the existing understanding of how erosion causes the deterioration of land surfaces. He further postulated there was a cyclic process in which material is eroded, carried into the sea, and then is reconsolidated to eventually encounter erosional forces again. This ideology marked a turning point in geological understanding, as it introduced the idea of a gradual process instead of a sudden catastrophic and theological process. The notion…

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    on very young oceanic 2 crust. The Juan de Fuca Ridge is a tectonic spreading center located off the coast of Washing- ton in the United States. The ridge is considered an intermediate spreading ridge as it spreads 5.6-5.7 cm/yr.
Several methods exist to measure the heat flow, some measure the heat flow in-situ by pulsating heat into a tube and then it measures the decay. Others rely on known properties of sediment relations and thermal conductivity. All of these methods require a sediment…

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    The second most abundant element in the Earth’s crust other than oxygen is silicon which if by mass is around 25.7g or 23%. However in nature, silicon never exist as a free or pure element but instead it mostly combines with the most abundant element in the Earth’s crust, oxygen, hence producing silica (SiO₂) or silicate minerals. The most prominent charge of Si in the crust is +4 rather than +2 which involve a silicon atom to bond in a tetrahedral manner with 4 other oxygen atoms giving rise to…

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    gnorance is not an acceptable excuse for using a racial slur in describing someone because people shouldn’t use a word that they have no idea what it means. For example, if someone says, “The crust has crestfallen because it fell apart.” This makes no sense because crestfallen means sad and disappointed and doesn’t refer to a crust whatsoever. Another example would be if a non-Caucasian teacher were to refer to a Caucasian student as a “cracker” and didn’t know what it meant, but only used it…

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    The Four Spheres Of Earth

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    water and about 97.5% of salt water covers the earth. About 75% of the earth’s surface is covered by oceans. Lithosphere: it includes the outer surface of the earth i.e. the crust. Everything from high mountains to ground level is a part of lithosphere. Biosphere: it includes all the living organism, all possible live on…

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