sedimentary rocks

• Sedimentary rocks


  Rocks formed from the compaction and cementation of sediments
• How sedimentary rocks are formed

  1. Rocks are broken by weathering into small rock particles

  2. These small rock particles are called sediments

  3. Sediments are transported by water, ice, gravity or wind

  4. The bits of rock are deposited into the water

  5. The sediments are compacted by pressure from the layers built up on top of them over millions of

  6. The particles become cemented together as more layers build to form sedimentary rocks
• Examples of sedimentary rocks


  • Mudstone
  • Sandstone
  • Limestone
  • Chalk
• Fossils


  Preserved remains of dead animals or plants that are trapped between the layers of rock over millions of years
• Fossils are only found in sedimentary rock
• The deeper the layer of sedimentary rock, the older it is