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Sedimentary Rock

Explore how sedimentary rocks are formed by wind or water deposition through erosion, deposition, compaction, and cementation. Discover clastic, organic, and chemical rocks, their examples like sandstone, coal, and limestone, and their uses in tools and building materials.

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Sedimentary Rock

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  1. Sedimentary Rock Chapter 4 Section 3

  2. Sedimentary Rock • Forms when wind or water deposit sediment • Sediment – small pieces of material that come from rock or living material

  3. Processes • Erosion – running water, wind or ice carry away fragments of weathered rock • Deposition – wind, water and ice slows and sediment settles out in layers • Compaction – sediment is pressed together • Cementation – dissolved minerals crystallize and glue particles of sediment together

  4. Types of Sedimentary Rock • Clastic rock – rock formed when fragments are squeezed together Rock Fragments can range in size

  5. Examples of Clastic Sedimentary Rock Sandstone – sand from beaches or sand dunes Shale – clay particles Breccia - Rock fragments with sharp edges Conglomerate – rounded fragments of rock

  6. Types of Sedimentary Rock • Organic Rocks –formed from once living things • Examples Coal – formed from plants that died millions of years ago Limestone –formed from ocean creatures

  7. Types of Sedimentary Rock • Chemical Rocks – when minerals that are dissolved in solution crystallize Examples: Limestone – from dissolved calcite Rock Salt – from dissolved halite

  8. Uses of Sedimentary Rock • Tools • Building materials

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