Metamorphic rock

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    In 1965, the serpentine rock became California’s state rock; they are abundant in central and northern California. The serpentine rock is a metamorphic rock that forms by the hydration of rocks from the Earth’s mantle; these types of rocks will rise towards the Earth’s surface along fault zones. It can be found in various colors from dark green and brown, to blue with a glossy surface. However, these rocks tend to be slippery and creates a high risk for land slides. Through a series of geological events, soil can be weathered from the rocks, resulting in the growth of various plant species. The development of serpentine soil begins with weathering; the rocks are exposed to the atmosphere and meteoric water. The soils are a byproduct…

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    Amphibolite is a foliated metamorphic rock. The orientation of the foliation is 251/75. It has a gneiss foliation and stripes of minerals segregation. Minerals such as white Quartz, shinny Plagioclase, green Amphibole, and pistachio green (yellowish) epidote were seen on the fresh surface. Greenschist is coarse grained metamorphic rock that contains minerals such as yellow epidote, flakes of mica and green serpentine and chlorite. Metasediments with various colors were seen such as Quartzite…

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    Once upon a time there was a rock called slate he was a metamorphic rock, and he was happy with his life. Slate was formed from volcanic ash that went under heat and pressure. His life conditions are very intense but he handles it very well. He is a very cool little rock even though he is so hot inside. Since he a is metamorphic rock he is banded and he is also folded and distorted. In a crowd of little rock's his size you can identify him because he is fine grained and has very slaty cleavage.…

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    into how the Grand Canyon became to be today. The other factors that shaped the canyon was the climate of where the canyon was formed and the massive flooding that flowed down from the mountains, also without plate tectonics nothing would have no creation at all of the grand canyon. Well it all started with the plate collisions 1.7 billion years with Precambrian Metamorphic Rocks according to "The Geology of the Grand Canyon." The rocks that made up the bottom of the Grand Canyon are…

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    A Rock Sample Lab Report

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    Questions and Answers Rock specimen “A” is identified as marble. This sample had a white to cream color to it, which is an identifying characteristic of marble. Another characteristic is the calcite inclusion; this inclusion is seen by bubbling when exposed to a saturated citric acid solution. When viewed by the unaided eye, the grain and crystal structure is clearly seen. While marble is supposed to be a fairly soft rock, the example provided proved to be fairly durable which was tested…

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    where you get to see many different types of rocks and many diverse examples of minerals. This trip happened on Saturday November 1, 2014. Several geology classes went to the field trip for the expedition, with the purpose of learning the different types of each rock and its minerals and also to identify the stones from oldest to youngest. The group leaders of this trip were several professors of geology. Professor Croxen, Garrett, Dr. B, did everything possible for this trip to happen. Guess…

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    The Appalachian Basin

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    various depositional environments and the understanding of sea level change, the Appalachian Basin formed by the collision of tectonic plates and sediment accumulation under the Earth’s surface. The Appalachian Mountains reveal subsidence belts, faulted marine sedimentary rocks and other geologic rocks in these tectonic settings. The Basin exists in the northeastern states of North America. This large rock formation exhibits collisional tectonics with modern time development of shales. This…

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    This makes the sandstone a mature sandstone. The sandstone is probably well rounded, well sorted, and well cemented if it is mostly made up of quartz and feldspar. Analysis of cross bedding and other sedimentary directional indicators imply that the formation was derived from a terrane consisting of igneous, high-grade metamorphic, and sedimentary rocks (Morey 1967). Morey’s study agress with what Ojakangas and Matsch put into the Minnesota’s geology book. Both of these studies state that…

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    The processes that formed the area are amazing to think about how a once ancient sea bed became one of the nation’s top tourist spots. The inland sea that left a deposit after deposit of sandstone and shale. Then an intrusive magma that made its way through the crust, only to cool and become granite and pegmatites. This magma changed the existing rocks making schists and quartzite. After the inland sea receded erosion dominated the area eroding many layers of rock that had been deposited. A…

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    Great Valley Sequence

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    By dating ammonite fossils, we know that the Panoche Formation (Mid-Cretaceous) is older than the Moreno formation. The conglomerates’ clasts have sizes around 5cm in diameter and they are round to sub-angular. Mineralogy of the clasts includes slightly metamorphosed felsic extrusive igneous rocks (rhyolite to dacite), metamorphic rocks (quartzite) that have high T/P ratios, greywacke, and chert. The source of the clasts might be a continental crust. The Panoche Formation was part of the…

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