snoopy9438
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 Wysłany: Śro 8:23, 30 Mar 2011 Temat postu: nike jordans heels|Reviewing Dahle Vantage Leverlt |
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Sedimentary rocks are classified as clastic [link widoczny dla zalogowanych], chemical [link widoczny dla zalogowanych], and organic sedimentary rocks.The rocks in each group form by completely different processes.Clastic Sedimentary RocksClastic sedimentary rocks are formed from sediment. Sediments are tiny broken bits and pieces of rock that settle out of air or water.WeatheringAll rocks are subject to weathering. Weathering is anything that breaks the rocks into smaller pieces or sediments. This can happen by the forces of wind, rain, or moving and freezing water.DepositionThe sediments that form from these actions are often carried to other places by the wind [link widoczny dla zalogowanych], running water and gravity. As these forces lose energy the sediments settle out of the air or water. As the settling takes place, the rock fragments are graded by size. The larger, heavier pieces settle out first. The smallest fragments travel farther and settle out last.ErosionThe combination of weathering and movement of the resulting sediments is called erosion.LithificationLithification is the changing of sediments into rock. There are two processes involved in this change. They are compaction and cementation.Compaction occurs after the sediments have been deposited. The weight of the sediments squeezes the particles together. When more and more sedimeyilai：[link widoczny dla zalogowanych]
jordanheels|Reviewing Dahle Vantage Leverlis
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