Sedimentary Rocks

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Sedimentary Rocks
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From Sediment to Rock.

• Sediment
• Small solid pieces of material that come from
  rocks or living things
• May include shells bones leaves stems and remains
  of other living things

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From Sediment to Rock.

• Most sedimentary rocks are formed through a
  series of processes
• Erosion, deposition, Compaction, and Cementation

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From Sediment to Rock.

• Erosion
• Running water wind or ice loosen and carry away
  fragments of rock

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From Sediment to Rock.

• Deposition
• Process by which sediment settles out of the
  water or wind carrying it

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From Sediment to Rock.

• Compaction
• The process that presses sediment together in
  thick layers that build up gradually over time

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From Sediment to Rock.

• Cementation
• The process in which dissolved minerals
  crystallize and glue particles of sediment
  together

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Types of sedimentary Rock

• There are three main types of sedimentary rocks.
• Clastic Rocks, Organic Rocks, and Chemical
  Rocks

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Types of sedimentary Rock

• Clastic Rocks
• Sedimentary rock that forms when rock fragments
  are squeezed together
• Shale, Sandstone, Conglomerate, and breccia

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Types of sedimentary Rock

• Organic rocks
• These types of rocks form when the remains of
  plants and animals are deposited in thick layers.
• Coal (swamp plants)
• and
• Limestone (sea creatures)

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Types of sedimentary Rock

• Chemical Rocks
• When minerals that are dissolved in solution
  crystallize

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Uses of Sedimentary Rocks

• People have used sedimentary rocks throughout
  history for many different purposes, including
  building materials and tools.
• Example
• flint for arrowheads
• Limestone for cement and steel