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Sediments • Solid, fragmental material that is transported by wind, water, ice or gravity • Eventually sediments become LITHIFIED and are called sedimentary rocks Sediments and Sedimentary Rocks Brad Hubeny 1 2 Detrital Sediments Classification of Sediments • Detrital Sediments • Chemical and Biochemical Sediments • Organic Sediments Offer clues to the environment of deposition 3 4 Detrital Sediments Immature Detrital Sediments Mature 5 Immature Mature 6 1 Chemical Sediments Biochemical Sediments 7 8 Organic Sediments 260 Million Year Old Reef! 9 10 Sedimentary Structures • Layering and surface features of a sedimentary rock • Offer clues to the environment of deposition 11 Ripples 12 2 Ripple Formation and Cross Beds Cross Beds 05_25ab.jpg 13 Graded Bedding 14 Mudcracks 05_26.jpg 15 16 Sedimentary Environments Sedimentary Environments: Sediment type + Sedimentary Structure + Fossils 17 18 3