*LITHIFICATION=process to make sedimentary rocks*

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Presentation transcript:

*LITHIFICATION=process to make sedimentary rocks* 1. Formation a. Weathering b. Erosion c. Deposition d. Compaction e. Cementation *LITHIFICATION=process to make sedimentary rocks*

i. The weathered material is called a. Weathering – the breakdown of material at the Earth’s surface.g i. The weathered material is called SEDIMENT.

¾ of rocks on the Earth’s surface are sedimentary?!?! Did you Know? ¾ of rocks on the Earth’s surface are sedimentary?!?!

ii. Sediment size varies – mud, sand, gravel

b. Erosion – movement of sediment from on place to another by WIND, WATER, or ICE.

c. Deposition – dropping off the sediment in a new location.

Deposition of the Mississippi

Now it’s time to put them together! d. Compaction (Squeezing) e. Cementation (Gluing)

Types of Sedimentary Rocks Clastic- forms when rock fragments are squeezed together. Organic- forms when remains of plants and animals are deposited in thick layers. Chemical-form when minerals that are dissolved in a solution crystallize.

Made from sediment such as clay, gravel, or sand 1. Clastic Made from sediment such as clay, gravel, or sand

Example: sand becomes sandstone

The white house is built of sandstone! Did you Know? The white house is built of sandstone!

Example: gravel becomes conglomerate.

i. Limestone – ocean life ii. Coal – plant life on land 2. Organic sedimentary rock is formed from previously living things. i. Limestone – ocean life ii. Coal – plant life on land

3. Chemical sedimentary rock is formed from a chemical reaction such as water evaporating and leaving rocks behind.