1. 3-5 Plate Boundaries
Unit 3: Dynamic Crust
December 13, 2011
Sanders

2. Plate Boundaries The Earth’s crust is not one solid piece.
The Earth is covered by tectonic plates.
There are three main plate boundaries.
3 - Dynamic Crust

3. Transform Boundary July 26, 2019 3 - Dynamic Crust
Transform motion occurs where two plates slip past each other.
Transform motion creates strike-slip faults. Blocks of crust slide horizontally past each other, causing moderate, shallow earthquakes.
July 26, 2019
3 - Dynamic Crust

4. Transform motion occurs where two plates slip past each other.
Transform motion creates strike-slip faults. Blocks of crust slide horizontally past each other, causing moderate, shallow earthquakes.
3 - Dynamic Crust

5. Subduction July 26, 2019 3 - Dynamic Crust
Continental Collisions: When two tectonic plates with continental crust collide, they buckle and thicken, pushing the continental crust upward.
Continetal/Oceaninc Collisions: When a tecton plate with oceanic crust, the oceaninc plate slides under the continental plate. The region where oceaic plates sink down into the asthenosphere is called a subduction zone.
Ocean/Oceanic Collisions: When two oceanic plates slides under the other, much as in a continental/oceanic collision.
July 26, 2019
3 - Dynamic Crust

6. Continental Collisions: When two tectonic plates with continental crust collide, they buckle and thicken, pushing the continental crust upward.
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7. Continental / Oceaninc Collisions: When a tectonic plate with oceanic crust, the oceaninc plate slides under the continental plate. The region where oceanic plates sink down into the asthenosphere is called a subduction zone.
3 - Dynamic Crust

8. Ocean/Oceanic Collisions: When two oceanic plates slides under the other, much as in a continental/oceanic collision.
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9. Divergent Boundary
July 26, 2019
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10. Divergent Boundary Plates separate at divergent boundaries.
Magma rises up to fill the space in which the separated place leaves.
New crust is formed there.
3 - Dynamic Crust