1. SEDIMENTARY ROCKS

2. How sedimentary rocks form…
Wind, water, ice, sunlight, and gravity cause rocks to weather into sediments.
These sediments are moved from one location to another by the process of erosion.
The sediments are eventually deposited on to older layers and form new ones.
The sediments become compacted and dissolved minerals separate from water and form a natural cement—Lithification.
Sedimentary rocks are formed.

3. Strata and stratification
Layers of rock
STRATIFICATION
process in which sedimentary rocks are arranged in layers

4. Layered rocks in the grand canyon

7. Clastic sedimentary rocks
Made from fragments (sediments) of rocks that are cemented together by minerals .
They are classified according to the size of the fragments.
EXAMPLES: conglomerate, sandstone, siltstone, shale

8. Loose sediments
Clastic Sedimentary Rock

9. Chemical sedimentary rocks
Form from solutions of dissolved minerals and water.
EXAMPLE: halite

10. Halite that has formed when the minerals crystallized.

11. Organic sedimentary rocks
Form from remains or fossils of once living things.
EXAMPLE: limestone, coal
COAL----
Forms underground when partially decomposed plant material is buried beneath sediment and is changed into coal the pressure from layers above.
This process takes millions for years.
Non-renewable fossil fuel

12. Formation of coal