1. ROCK CYCLE – SEDIMENTARY NOTES Brought to you by: Mr. Henderson

2. Formation  Process of changing rocks due to…  Weathering (breakdown of rock)  Erosion (movement of weathered material)  Compaction of these sediments and cementation with CaCO 3 or SiO 2

3. Types of Sedimentary Rocks  Clastic – based on grain size  Very fine – clay  Fine - silt

4. Types of Sedimentary Rocks – Cont’d.  Coarse – sand  Moderate – Arkose  Pebble – Conglomerate  Boulder

5. Types of Sedimentary Rocks – Cont’d.  Chemical – due to a chemical process or organic material being present Rock Salt

6.  Evaporate – due to the evaporation of water  Biochemical – organic material such as decaying flora present Types of Sedimentary Rocks – Cont’d. Coal Gypsum

7. Lechuguilla Cave – Gypsum Crystals

8.  Reactive – effervescence in presence of acid Types of Sedimentary Rocks – Cont’d.