What are the main types of sedimentary rocks?

There are three different types of sedimentary rocks.

  • Clastic sedimentary rocks: Formed from clasts or pieces of other rock. (Eg: sandstone)
  • Organic sedimentary rocks: Formed from hard, biological materials like plants, shells, and bones that are compressed into rock. (Eg: coal)
  • Chemical sedimentary rocks: Formed from chemical precipitation. (Eg: limestone, halite, and flint)

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