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Unformatted text preview: sedimentary rocks a) Compaction: most common physical change i) Weight of overlying material compresses the deeper sediments ii) Reduction in pore spacewater is driven out iii) Most significant process in fine-grained sedimentary rocks b) Cementation: most important process by which sediments are converted to sedimentary rock i) Chemical diagenetic change Involves precipitation of minerals among individual sediment grains Cementing materials are carried in solution by water percolating through open spaces b/t particles Cement precipitates onto sediment grains, fills open spaces, and joins particles ii) Addition of cement reduces its porosity iii)...
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- Spring '07