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Sedimentary Rocks

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(also called deposited rocks) are rocks, which are derived from the decomposition, and weathering of older rocks. The sedimentary rock cover of the continents of the earth's crust is extensive, but the total of that being of is estimated to be only five percent of the total. contain important in ....

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....ting expansion and contraction, also aids the process. Weathering contributes further to the breakdown of rock by increasing the surface area exposed to chemical agents. Chemical weathering is the breakdown of rock by chemical reaction. In this process, the minerals within the rock are changed into particles that can be easily carried away. Air and water are both involved in many complex chemical reactions. The minerals in igneous rocks may be unstable under normal atmospheric conditions; thos....
Number of words: 693 Approximate pages: 3

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