1. SEDIMENTARY ROCK Mod E. U.3 L.3

2. Definition Rock that forms when sediments are compacted and cemented together

3. Sedimentary Rock Layers

7. Formation (processes) Weathering and erosion break down existing rock into sediment. Sediment is deposited in layers called strata (Think Grand Canyon)

8. Rocks get compacted and cemented - compaction – due to pressure - cementation – glue together

9. Three types: 1. Clastic, 2. Organic, and 3. Chemical

10. 1. Clastic Classified by texture Fine grained e.g. Shale (from mud) Medium –grained e.g. Sandstone (from sand) Coarse-grained e.g. Conglomerate (from pebbles)

11. Shale - Fine grained

12. Sand stone - fine to medium grained

13. Breccia Conglomerate

14. 2. Organic Sediment made up of remains of living organisms Shells, fossils, coal

15. Coquina

16. Chalk: A fine-grained, light-colored limestone formed from the calcium carbonate skeletal remains of tiny marine organisms.

17. Coal

18. 3. Chemical Minerals dissolved in water are crystallized when water evaporates e.g.Limestone: calcium carbonate or calcite

19. Limestone

21. Rock Salt or "halite" is a chemical sedimentary rock - forms from the evaporation of ocean or saline lake waters.

22. Sedimentary rocks formed as chemical precipitates. Name of Rock Precipitate Type Halite Sodium Chloride Gypsum Calcium sulfate Silcretes Silica Limestone Calcium Carbonate Dolomite Calcium Magnesium Carbonate

23. HaliteLimestone

24. DolomiteChalk

25. Homework Worksheet