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Types of Plate Boundaries © Copyright 2008. M. J. Krech. All rights reserved.

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Presentation on theme: "Types of Plate Boundaries © Copyright 2008. M. J. Krech. All rights reserved."— Presentation transcript:

1 Types of Plate Boundaries © Copyright M. J. Krech. All rights reserved.

2 There are four types of Plate Boundaries.

3 The first type of plate boundary is called Divergent. Divergent means: moving apart.

4 The Mid-Atlantic Ridge is an example of a Divergent Plate Boundary :

5 Another example of a Divergent Plate Boundary is Iceland, which is splitting apart down the middle.

6 Features of a Divergent Boundary: (1) Rift Valley The Álfagjá Rift Valley in southwest Iceland Most of the world’s rift valleys are on the ocean floor.

7 (2) Mid-Atlantic Ridge Mountains or Volcanoes

8 The second type of plate boundary is called Convergent. Convergent means: moving together.

9 There are two types of Convergent Boundaries. The first is: Convergent - Subduction. In this type of Convergent Boundary, the denser plate subducts under the less dense plate.

10 Features of a Convergent- SubductionBoundary are: 1.Volcanic Mountain Ranges 2.Trenches

11 The Andes Mountains are an example of a Volcanic Mountain Chain formed by a Convergent-Subduction Boundary. The Nazca Plate is subducting under the South American Plate, forming the Andes Mtns.

12 The Mariana Trench is an example of a Trench formed by a Convergent-Subduction Plate Boundary. The Pacific Plate is subducting under the Eurasian Plate.

13 Another type of Convergent Plate Boundary is the Convergent - Collision Boundary. Two plates of the same density collide and form Folded Mountains.

14 Features of a Convergent- Collision Boundary are: Folded Mountains

15 An example of a Convergent-Collision Folded Mountain is the Himalayan Mtns.

16 India is colliding with the Eurasian continent.

17 Another view:

18 The fourth type of Plate Boundary is the Transform-Sliding Boundary. These plates slide past each other.

19 The Features of a Transform-Sliding Boundary are: Earthquake Zone or Fault Zone

20 An example of a Transform-Sliding Plate Boundary is the San Andreas Fault Zone in California.

21 Views from the air of the San Andreas Fault Zone.

22 The Mid-Atlantic Ridge also has sliding (transform) boundaries.

23 The End BONUS: (1) Does your state sit on a Plate Boundary? (2) How do you know?


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