Sedimentary rocks - Sedimentary rocks: I) II) Sedimentary...

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Sedimentary rocks: I) Sedimentary rocks a. Def: Rocks formed by weathering, transportation and deposition of particles. II) Clastic rocks: a. Made of particles from mechanical weathering processes b. Wentworth scale i. Conglomerates 1. Particles > 2mm. 2. Big clasts, usually rounded. a. If angular, called Breccia. 3. Poorly sorted, sand as matrix. III) Sandstone a. Particles between 2mm and .0625mm b. Mineral composition is used in the naming of sandstones. IV)Mudstone a. Particles < .0625 b. General term for fine grained sedimentary rocks. V) Chemical Sedimentary Rocks a. Formed when ions are forced out of solution b. Biochemical i. Organisms extract ions from water for hardpart. ii. Limestones. 1. CaCo 3 c. Evaporites/Precipitates i. Evaporation of water causes ions to become saturated in the solution. 1. The ions combine to form a solid and then settle out (precipitate).
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VI)Diagenesis a. Physical, chemical and biological changes that happen to sediments after initial deposition, both during and after lithificiation. b.
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This note was uploaded on 04/07/2008 for the course GEOLOGY 101 taught by Professor Wareham during the Spring '08 term at CSU Fullerton.

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Sedimentary rocks - Sedimentary rocks: I) II) Sedimentary...

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