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

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Presentation transcript:

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

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

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

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

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

Continental Collisions: When two tectonic plates with continental crust collide, they buckle and thicken, pushing the continental crust upward. 3 - Dynamic Crust

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

Ocean/Oceanic Collisions: When two oceanic plates slides under the other, much as in a continental/oceanic collision. 3 - Dynamic Crust

Divergent Boundary July 26, 2019 3 - Dynamic Crust

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