1. Sedimentary Rocks
Group 2 of 3

2. Sedimentary rocks are rocks that are made from rock and mineral fragments (sediments).
These sediments can be transported by:

3. Water

4. Wind

5. Ice (glaciers)

6. How do these sediments turn into a rock?
Two processes:
Compaction
Cementation

7. The mineral calcite is the cement that holds this rock together.

8. Gabbro

9. Sedimentary rocks show certain characteristics:

10. layering

11. Why can’t you find fossils in Igneous Rocks?

12. Ripple marks

13. Mudcracks

14. Classes of Sedimentary Rocks:
Clastic –
made from broken bits of other rock and minerals.
Examples:

15. conglomerate

16. sandstone

17. Pyrite (Fool’s gold) FeS2, oxidation (rust) stains in sandstone

18. shale

20. 2. Chemical –
made from minerals once dissolved in water.
Examples:

21. Salt (Great Salt Lake, Utah)

22. Gypsum

23. 3. Organic –
made from substances that were once part of something alive.
Examples:

24. Limestone

26. Coquina

27. Coal