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Sedimentary rocks
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Sedimentary rocks

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  • 1. 1. Formation a. Weathering b. Erosion c. Deposition d. Compaction e. Cementation *LITHIFICATION=process to make sedimentary rocks*
  • 2. a. Weathering – the breakdown of material at the Earth’s surface.g i. The weathered material is called SEDIMENT.
  • 3. Did you Know? ¾ of rocks on the Earth’s surface are sedimentary?! ?!
  • 4. ii. Sediment size varies – mud, sand, gravel
  • 5. b. Erosion – movement of sediment from on place to another by WIND, WATER, or ICE.
  • 6. c. Deposition – dropping off the sediment in a new location.
  • 7. Now it’s time to put them together! d. Compaction (Squeezing) e. Cementation (Gluing)
  • 8. A. Clastic Made from sediment such as clay, gravel, or sand
  • 9. i. Sand becomes sandstone
  • 10. Did you Know? The white house is built of sandston e!
  • 11. ii. Clay and mud become shale
  • 12. iii. Gravel becomes conglomerate.
  • 13. B. Organic sedimentary rock is formed from previously living things. i. Limestone – ocean life ii. Coal – plant life on land
  • 14. 4. Chemical sedimentary rock is formed from a chemical reaction such as water evaporating and leaving rocks behind.
  • 15. i. Mineral crystals left behind in Death Valley after the water evaporates ii. Playa Lake in California – in the process of evaporating and leaving chemical rock behind
  • 16. Mammoth Cave in Kentucky!!!!!

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