1. Exfoliation of Igneous rock

2. What is Chemical Weathering?
A change in rock composition or chemical make-up
Involves water, water vapor, acids, and/or oxygen O2

3. What are the Types of Chemical weathering?
Hydrolysis
Carbonic acid in water dissolves calcite.
This chemical weathering can hollow out underground caverns
Limestone and dolomite both dissolve because they contain calcite

4. What are the Types of Chemical weathering?
Acid rain
Carbonic acid in rain water can weather the details of statues and tombstones
Ex. Marble & Limestone

5. What are the Types of Chemical weathering?
2. Oxidation
Oxidation of minerals with iron (magnetite, pyrite) results in the formation of rust or iron oxide.
This why Mars is the red planet
Copper turns rocks green

6. Rate of Weathering – 3 factors
Surface Area
Larger area = faster weathering rate
Rock Composition
Higher Mohs scale = more resistant to weathering
Climate
Warm & wet weather = faster weathering

7. What is erosion?
The removal and transport of weathered materials by natural agents.
Caused by:
Glaciers
Running Water
Gravity
Wind
Waves

8. Glaciers & Erosion
A glacier is a mass of compact ice and snow that moves under its own weight.