Sedimentary Rocks

• sedimentary rocks came from

  sediments
• sediments are originated by

  1. weathering and erosion from preexisting rocks
  2. precipitation of minerals dissolved in water
  3. remains of plants and animals
• sedimentary processes


  weathering

  erosion

  transportation

  deposition

  diagenesis
• alteration and breakdown of rocks

  weathering
• physical breakdown of rock or disintegration


  mechanical weathering
• decomposition of minerals by chemical reaction

  chemical weathering