1. Plate Tectonics
Sub-Unit Key Question: How are the features seen at different types of plate boundary produced?
Key Words:
Convergent (Destructive)
Divergent (Constructive)
Conservative (Passive)

2. Plate Tectonics
Plate Boundaries
A Recap…..

3. Plate Boundaries

4. Constructive e.g. Iceland
DIVERGENT BOUNDARIES
Constructive e.g. Iceland
Key Question: How are the features seen at divergent margins produced
animation

5. Making a model of a MOR:

6. Making a model of a TRANSFORM FAULT

7. Features/landforms: Processes: Constructive Plate Margins Animation 2
Rift Valley
Pillow Lava
Basalt
Magnetic stripes
Shallow Focus earthquakes
Transform Faults
Shield Volcanoes (Red)
Processes:
Sea-Floor Spreading
Decompression Melting
Rifting
Faulting
Animation 2

8. CONVERGENT BOUNDARIES
O-C Collision e.g. Andes
Key Question: How are the features seen at convergent Ocean – Continent margins produced?
Animation

9. To Start…. Watch these clips, write down the link between
Last lesson and this lesson?
Show the subduction and spreading
Detailed discussion subduction
AIM HIGH:
1.Where are the oldest rocks and where are the oldest rocks in the ocean and why?
2. What would happen if subduction did not exist?
Show types of earthquakes

10. Destructive Plate Margins: Oceanic-Continental
Features/landforms:
Trench
Benioff Zone
Andestite
Strato Volcanoes (Grey)
Explosive Eruptions
Shallow Focus Earthquakes
Fold Mountains
Subduction Zone
Processes:
Subduction
Partial Melting
Friction
Crustal Shortening

11. And to end
QUESTION CUBE!

12. CONVERGENT BOUNDARIES O-O Collision e.g. The Caribbean
Key Question: How are the features seen at convergent Ocean – Ocean margins produced?
Animation

13. Destructive Plate Margins: Oceanic-oceanic
Features/landforms:
Ocean Trenches
Explosive Activity
Grey Volcanoes
Andesite
High Viscosity Lava
Benioff Zone
Processes:
Subduction
Partial Melting
Friction
Crustal Shortening

14. CONVERGENT BOUNDARIES C-C Collision e.g. Himalayas
Key Question: How are the features seen at convergent continent – continent margins produced?
Animation
Model
Ian copying Canon Slade

15. On mini WB, sketch the main structure seen at Crookdale Crag and add:
STARTER
On mini WB, sketch the main structure seen at Crookdale Crag and add:
North
South
The appropriate terms only in the right place:
Mainly ductile / brittle deformation
Directions of Extension / Compression
Strike of fold axis N-S / EW
Crustal shortening / Crustal lenghtnening directions
Crustal thinning / crustal thickening directions
Bedding / No bedding
Main fold is an Antiform / Synform
Now:
Make a copy for your file and explain how it links to todays LO?

16. STARTER Strike of Fold Axis E-W North South Direction of Compression /
Bedding Plane
Direction of
Compression /
Shortening
Direction of
Compression /
shortening
Antiform
Fault?
Now:
Make a copy for your file and explain how it links to todays LO?
Mainly ductile deformation
As folds deform plastically,
Some brittle due possible to fault.
Crustal Thickening

17. Destructive Plate Margins: Continental-continental collision
Features/landforms:
Nappes (folds)
Thrust Faults
Shallow focus earthquakes
No Volcanoes
Plateu
Processes:
Folding
Faulting
Crustal Shortening
Compression

18. Task 1. Read and highlight your notes to include: Plates involved
Processes
Features / Landforms
2. Draw an annotated diagram of the plate margin.
3. Explain how the features are formed in your own words.

19. More LIKE and Y ?
Teams of 2!!!

20. Car Crash 1
Is a Continent- continent collision more like a …… and why?
Moving Walkway

21. Is a Continent- continent collision more like………………
and why?

22. Does the lithosphere deform more like a …… at a C-C collision and why?

23. STARTER
Explain what has happened here.
What type of margin do you think this is? What is your evidence?

24. CONSERVATIVE BOUNDARIES e.g. The San Andreas Fault
Key Question: How are the features seen at conservative margins produced?
Animation

25. Task 1. Read and highlight your notes to include: Plates involved
Processes
Features / Landforms
2. Draw an annotated diagram of the plate margin.
3. Explain how the features are formed in your own words.

26. Conservative Plate Margins:
Features/landforms:
Fault Scarp
Shallow focus earthquakes
Transform Faults
Processes:
Friction
Stress Release
Relative movement

27. Read fig.1 and suggest the cause of the earthquake (1)
Exam Style Question:
Fig 1
Plate U
Plate T
On paper:
Read fig.1 and suggest the cause of the earthquake (1)
Complete fig 2 by putting relative movement arrows in the boxes in the correct direction (2)
Name plates T and U. (2)
Name what type of plate boundary features B, C and D are examples of (3)
Explain why earthquakes get deeper along line X to Y (2)
What type of rock would you expect at B? (1)
What type of rock would you expect erupting at Y? (1)
Explain why there are no volcanoes at plate boundary D (1)
In the field at boundary D, what evidence would you look for to confirm the type of fault? (1)
Fig 2: Plate Boundaries on East Coast, USA

28. HOTSPOTS e.g. Hawaii Hawaii is in the Pacific Ocean what type of Lava
Key Question: How are the features seen at hotspots produced?
Hawaii is in the Pacific Ocean
what type of
Lava
Volcano
Explosiveness
will be produced here?
Animation

29. Starter: Watch the animation and use the diagrams to work out the true and false statements
Hotspot
Animation

30. ANSWERS

31. Intra-Plate Areas: Hot Spots Features/landforms: Processes: Tasks:
Basaltic lava
Fissure & shield volcanoes
Island chain
Viscosity of lava
Rate of movement
Hot spot
Processes:
Sea-floor spreading
Mantle plume
Partial melting
Tasks:
To present to an audience (using images) an explanation of how the features and landforms found at intra-plate areas are formed by the processes operating there.

32. Task 1. Read and highlight your notes to include: Plates involved
Processes
Features / Landforms
2. Draw an annotated diagram of the plate margin.
3. Explain how the features are formed in your own words.