1. { Sedimentary Rocks

2.  Aim:  How do we classify and evaluate sedimentary?  How do we classify and evaluate sedimentary?  Learning Target:  I CAN explain how rocks are formed and on what basis they are classified Aim & Learning Target

3.  Open your Reference Tables to the Sedimentary Rock Scheme Do Now

4. Do Now Check:  Read the following statement:  You find a rock on your way home, you think it might be a sedimentary rock because you see fossils embedded inside it.  Thumbs up you agree  Thumbs down you disagree

5.  ALL ROCKS are composed of MINERALS! RECAP:

6.  WEATHERING (can be caused by rain wind, water) breaks down rocks into sediments  Examples of sediments:  Sand  Pebbles  Silt  clay FORMATION OF SEDIMENTARY ROCKS

7.  SETTLE in a process called deposition.  MOVE in a process called erosion What happens to sediments?

8.  PRESSED together under many layers of sediment called compaction  Dissolved minerals CRYSTALLIZE AND STICK TOGETHER in a process called cementation. What happens to sediments?

9.  sedimentary rocks The result =

10.  May contain chunks of other rocks  May contain shells  May contain fossils  Sometimes layered, but the layer are similar in color Characteristics of Sedimentary Rocks

11.  Page 7.  What does it tell us about sedimentary rocks? What pg of the ref table can you find the Scheme for Sedimentary Rock identification?

12.  Texture  Grain size  Composition  Rock names  Map symbol What does it tell us about