1 / 11

Theory of Plate Tectonics

Theory of Plate Tectonics. Power of Plate Motion. Chilean Earthquake Chile Quake Poses Possible Hawaii Tsunami Threat Major Earthquake in Haiti 2010. A New Theory. Sea-floor spreading supported Wegener’s Continental Drift How do we explain Sea-floor spreading and Continental Drift?

ellag
Download Presentation

Theory of Plate Tectonics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Theory of Plate Tectonics

  2. Power of Plate Motion • Chilean Earthquake • Chile Quake Poses Possible Hawaii Tsunami Threat • Major Earthquake in Haiti 2010

  3. A New Theory • Sea-floor spreading supported Wegener’s Continental Drift • How do we explain Sea-floor spreading and Continental Drift? • Plate Tectonics

  4. Plate Tectonics • Theory that the Earth’s lithosphere is divided into tectonic plates that move on top of the asthenosphere • Plate movement

  5. Convection • Hot material rises while cool material sinks • Cool material is dense • The motion of sinking and rising material drags the tectonic plate away from mid-ocean ridge • Flash Presentation

  6. Tectonic Plate Boundaries • Convergent • Divergent • Transform

  7. Convergent Plate Boundaries • When two plates push into each other • Classification based on crust: • Continental/Continental • Continental/Oceanic • Oceanic/Oceanic

  8. Subduction Zones • Region where the oceanic plate sinks into the asthenosphere • Volcanic formations frequently occur • Formed at Convergent Boundary • Continental/oceanic • Oceanic/oceanic • Ocean Trenches = feature of boundary

  9. Divergent Plate Boundary • Two plate move away from each other • Where new oceanic lithosphere forms • Can form on land as well: rift valley • Example is mid-ocean ridge

  10. Transform Plate Boundary • Two plates slide past each other horizontally • San Andreas Fault is example

More Related