1. The Changing Continents
Chapter
The Changing Continents

2. Reshaping Earth Cratons – large areas of stable rock on continents
Shields – rocks in cratons exposed to surface

6. Rifting – the breaking apart of continents

9. Terranes – pieces of lithosphere with a unique history
Identified by:
Fossils
Major faults at boundaries
Magnetic Properties

10. Accretion – process in which terrane becomes part of a continent
Convergent boundaries
Become mountains or surface areas

11. Sea mounts – small underwater terranes

12. Effects of Continental Change
Mountain ranges
Latitude location
Climate
Wind patterns Mountain ranges

13. Changes in Climate Sahara in Africa was covered by ice
Located by south pole

14. Changes in Life Continents separate Populations separate
New species form
Madagscar

15. Supercontinents
Supercontinent cycle – forming and breaking apart cycle

16. Pangea Appalachian Mountains formed
Panthalassa – Ocean that surrounded pangea

17. Gondwanaland Laurasia

18. Modern Continents
Rocky Mountains
Andes
Alps

19. The Future