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The Grand Canyon

The Grand Canyon. layers. 8)Sedimentary rocks form from cementation and compaction . Sedimentary rocks form over time by: Compaction (pressure) Cementation (water causing small rock particles to stick together).

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The Grand Canyon

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  1. The Grand Canyon

  2. layers

  3. 8)Sedimentary rocks form from cementation and compaction. Sedimentary rocks form over time by: • Compaction (pressure) • Cementation (water causing small rock particles to stick together)

  4. 9) Sedimentary rocks are formed by the ongoing deposition of rocks and other sediments that are cemented together.

  5. 10) Usually after burial, deposited sediment undergoes lithification • The processes that turn it into a rock is called LITHIFICATION

  6. What is lithification?

  7. 11) Lithification includes cementation and compaction.

  8. 12) Coal is a black, sedimentary rock that is formed from cementation and compaction • Coal- is made from remains of plants • Began forming millions of years ago • Weight of sediments above pressed it into coal

  9. Coal Mining

  10. Sandstone • 13) Limestone, shale, and sandstone are all examples of sedimentary rock. Limestone Shale

  11. Forming and Transporting Rock Particles • Sediments can be large or small • They break away by wind or water (erosion)

  12. 14) Sediment from weathered rock is transported and deposited elsewhere such as at the beach, or in a delta, or in the deep sea. Delta

  13. Sediment at the Beach

  14. 15) Sedimentary rocks are the most abundant rock on Earth’s Surface.

  15. There is a lot to learn from sedimentary rocks

  16. …plants and shells Limestone - shells and skeletons of ocean organisms • from carbonate materials like calcite Example: White Cliffs of Dover—began forming from shells and skeletons of dead ocean organisms (see picture on next slide) • coral reefs consist of limestone from dead organisms

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