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Unformatted text preview: Sedimentary Rocks The weathering process produces sediments, which then become lithified to form sedimentary rocks. Lithification is the process of turning sediments into rocks. Classifying sedimentary rocks: Detrital sedimentary rocks are formed from material called detritus. Detitus consists of particles of weathered rock material. The following particle size scale is used to distinguish among detrital sedimentary rocks (gravel, sand, silt, & clay…largest to smallest). Gravel (Rounded – Conglomerates & Angular – Breccias) Sand (Sandstone - ) Silt (Siltstone - ) Clay (Claystone, Mudstone, & Shale - ) Chemical Sedimentary Rocks Result of chemical processes: Acid Dissolving rocks Rocks goes into solution precipitate back to a rock. Limestone – Calcium Carbonate Chalk – Microscopic skeletal remains Coquina Travertine Jasper/Flint/Chert Evaporites...
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- Fall '07
- Sedimentary rocks, Detrital sedimentary, Rocks Igneous Rocks