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- 2. sedimentSolid fragments of inorganic or organic material that come from the weathering of rock and are carried and deposited by wind, water, or ice.
- 3. 3 types of sedimentary rocks1. clastic2. chemical3. organic
- 4. Sedimentary rocks1. clastic rocks:formed from fragments of OTHER rocks.e.g. shale, sandstone, conglomerate2. chemical3. organic
- 5. shaleShale is a clastic sedimentary rock that is made up of clay-size (less then 1/256 millimeter in diameter) weathering debris. It typically breaks into thin flat pieces.
- 6. sandstone
- 7. conglomerate
- 8. 3 types of sedimentary rocks1. clastic: shale, sandstone, conglomerate2. chemical: sedimentary rocks formed when form when dissolved materials precipitate from solution (by evaporation or chemical action)E.g. rock salt, some limestones3. organic
- 10. limestone
- 11. 3 types of sedimentary rocks1. clastic: shale, sandstone, conglomerate2. chemical: rock salt, some limestones3. organic: formed from remains of plants and animals.E.g. some limestones, coal
- 12. limestones
- 13. Limestone forming environmenta coral reef system from the Kerama Islands in the East China Sea southwest of Okinawa. Here the entire seafloor is covered by a wide variety of corals which produce calcium carbonate skeletons.
- 14. coal
- 15. coalforms from the accumulation and preservation of plant materials, usually in a swamp environment
- 16. 3 types of sedimentary rocks1. clastic2. chemical3. organicHow do clastic rocks form
- 17. Clastic rocks1. Come from the weathering of other rocks.2. From small to large fragments, ranging from pebbles to gravels to microscopic flakes.3. Carried by winds, waves, and water.4. sediments are deposited when a stream slows down.
- 18. Clastic rocks5. IMPORTANT: Dissolved minerals like silica, calcite, and iron oxide act as cement, or glue.These minerals settle into the spaces between sand grains or pebbles, and bind the fragments.
- 20. conglomerate
- 21. conglomerateFormed from pebbles, sand grains Quartz is the most common mineral. (it’s very durable)
- 22. sandstone
- 23. sandstoneFormed largely from grains of quartz. Up to 30% of sandstones may be air space, making them porous and permeable.
- 24. shale
- 25. shaleFormed from tiny clay flakes. (of mineral kaolin)