Tectonic Boundaries

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A presentation showing the different types of tectonic plate boundaries and giving examples of each.

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Tectonic Boundaries

  1. 1. Tectonic Plate Boundaries By Drew Lindow
  2. 2. Divergent Boundaries <ul><li>A divergent boundary is created when two plates move apart from one another. </li></ul>
  3. 3. Mid-Atlantic Ridge <ul><li>The Mid-Atlantic ridge is the most famous divergent plate boundary. The ridge is spreading at a rate of 3.5 cm/year. </li></ul>
  4. 4. South West Indian Ocean Ridge <ul><li>The S. W. Indian Ocean Ridge separates the Somalia and African plates from the Antarctic plate. It spreads at a rate of 1.5 cm/year. </li></ul>
  5. 5. Convergent Boundaries <ul><li>A convergent boundary is created when two plates push towards each other. </li></ul>
  6. 6. Himalayas <ul><li>Continental - Continental </li></ul><ul><li>The Himalayas were formed by the converging of the Eurasian plate and the Indian plate. </li></ul>
  7. 7. The Chile Fault <ul><li>This is a double fault. On the west is an oceanic – continental boundary and east of that is a continental – continental boundary. </li></ul><ul><li>This is a convergence of the Nazca and S. American plate. </li></ul>
  8. 8. Aleutian Trench <ul><li>Oceanic - Continental </li></ul><ul><li>The Aleutian Trench and the Aleutian Islands were formed by the collision between the northern part of the Pacific plate and the North American plate. </li></ul>
  9. 9. Java Trench <ul><li>Oceanic – Continental </li></ul><ul><li>The Java trench is a convergence of the India plate on the southwest and the Burma and Sunda plates on the northeast. </li></ul>
  10. 10. Philippine Plate <ul><li>Oceanic – Oceanic </li></ul><ul><li>The Philippine plate converges with the Pacific plate to form the Marianas Trench. </li></ul>
  11. 11. Caribbean Fault <ul><li>Oceanic – Oceanic </li></ul><ul><li>The American plates are converging with the Caribbean plate from the east. </li></ul>
  12. 12. Transform Boundaries <ul><li>A transform boundary is created when two plates slide past each other. Earthquakes are commonly made when the two plates build up stress and suddenly release it. </li></ul>
  13. 13. Alpine Fault <ul><li>The Alpine Fault creates a transform boundary between the Pacific plate and the Indo-Australian plate. The average slip rate is 3 cm/year. </li></ul>
  14. 14. Alpine Fault <ul><li>This image shows the Alpine Fault line crossing the souther alps in New Zealand. </li></ul>
  15. 15. Divergent Offsetting <ul><li>Many transform faults are found on the ocean floor where they offset diverging plates in a zig-zag like motion. Below is the Mid-Atlantic Ridge and some offsetting transform faults. </li></ul>
  16. 16. Sources <ul><li>http://www.geography-site.co.uk </li></ul><ul><li>http://www.scarborough.k12.me.us </li></ul><ul><li>http://en.wikipedia.org </li></ul><ul><li>Google Earth </li></ul>

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