First National Park Research Paper

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Yellowstone was the first national park established in 1872. From there, 58 other parks have been established. Aside from parks, national forests, monuments, and recreation areas are protected. National forests are unique because they allow restricted hunting. Minerals are naturally occurring, inorganic solids with a definite chemical composition and ordered internal structure. The lighter silicate minerals, such as quartz, make up the vast majority of the crust and mantle. These minerals are composed of silicon and oxygen. Silicate minerals are further divided into mafic and felsic based on density, brightness, and containing iron and magnesium. Non-Silicate minerals make up the nickel-iron core. They are further divided into six sections. Igneous rocks have a crystalline structure, are formed from lava, and make up two-thirds of …show more content…

The process of metamorphism to create these rocks takes place with temperature, pressure, or hot solutions. Metamorphic rocks are divided into foliated and non-foliated rocks. Folliation creates layers or sheets on the rock from stress. Non- foliated rocks do not produce these layers because they have uniform mineral compositions. Sedimentary rocks are non-crystalline rocks created from particles of other rocks. These rocks are associated with fossils. The process of lithification creates these rocks as the rock is compacted and chemical deposits fill the gaps. Clastic rocks are weathered fragments. Non-clastic rocks are divided into biological and chemical. Precipitate forms chemical rocks and biological fragments form biological rocks. The geological time scale stretches from the Precambrian to Cenozoic eras with notable events during each period. The Precambrian consists of soft-bodied life with rare fossils. Fossils in our area come from the Ordovician period. Mass extinctions ended both the Permian and Cretaceous

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