2.4 tectonic plate boundaries
Upcoming SlideShare
Loading in...5
×
 

2.4 tectonic plate boundaries

on

  • 873 views

 

Statistics

Views

Total Views
873
Views on SlideShare
856
Embed Views
17

Actions

Likes
0
Downloads
7
Comments
0

1 Embed 17

http://funwithearthscience.wikispaces.com 17

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

2.4 tectonic plate boundaries 2.4 tectonic plate boundaries Presentation Transcript

  • Tectonic Plate Boundaries Ag Earth Science Mr. Silva
  • Objective• Students will be able to identify three different plate boundaries, explain what type of stress is acting on them, and tell what landscape features are created at each boundary.
  • Three Plate Boundaries• Divergent Plate Boundaries • aka. Spreading Centers• Convergent Plate Boundaries • aka. Subduction Zones• Transform Boundaries • aka. Transform Faults
  • Divergent Plate Boundaries
  • Divergent Plate Boundaries• Pull Apart• Tension• Create new rock (Lithosphere) • Occur under water (Oceanic Crust) • Occur on land (Continental Crust)
  • Mid Atlantic Ridge
  • Continental Rifting
  • African Rift Valley Example of Continental Rifting
  • Convergent Plate Boundaries
  • Convergent Plate Boundaries• Push together “plates collide”• Compression• Destroy/Recycle rock (lithosphere)
  • Convergent Plate Boundaries• Three Possible Collisions • Oceanic-Continental Collision • Oceanic-Oceanic Collision • Continental-Continental Collision
  • Oceanic-Continental Collision continental• Denser oceanic crust dives under crust• Oceanic crust is then recycled by melting back into the mantle• This massive collision creates deep ocean trenches, an accretionary wedge, a forearc basin, and a volcanic arc.• Exactly like the California landscape.
  • California’s Profile
  • Oceanic-Oceanic Collision• One oceanic plate will subduct under another• Creates deep ocean trenches• Creates volcanic island arcs• Example: the Aleutian Islands in Alaska or Japan
  • Aleutian Islands are aaAleutian Islands are Volcanic Island Arc Volcanic Island Arc
  • Continental-Continental Collision• This occurs when continental crust is riding on a subducting plate and then smashes into another continent
  • Transform Fault Boundaries
  • In the simplest form, plates slide past each other
  • In Review