Sedimentary Rocks

Sedimentary Rocks  " Made up of Sediments"

Sedimentary Rocks are formed in following steps.

1. Weathering/Erosion
2. Transportation.
3. Deposition
4. Lithification
5. Cementation

There are three basic types of sedimentary rocks: 

1) clastic sedimentary rocks such as breccia, conglomerate, sandstone and shale, that are formed from mechanical weathering debris.

 2) chemical sedimentary rocks such as rock salt and some limestones, that form when dissolved materials precipitate from solution. 

3) organic sedimentary rocks such as coal and some limestones which form from the accumulation of plant or animal debris.