1 / 8

Plate Tectonics

Plate Tectonics . Unit 2: Tectonic Processes Ms. Thind. Tectonic Forces. Earth’s crust subject to internal pressure and stress that originates within earth. Where are convection currents taking place? Asthenosphere (upper mantle) . Think back: What is the continental crust made of?

hector
Télécharger la présentation

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. Plate Tectonics Unit 2: Tectonic Processes Ms. Thind

  2. Tectonic Forces • Earth’s crust subject to internal pressure and stress that originates within earth. Where are convection currents taking place? Asthenosphere (upper mantle)

  3. Think back: What is the continental crust made of? “Sial” Less dense material float to the top Oceanic Crust? “Sima” dense layer of basalt underneath the less dense material

  4. Theory of Isotacy • Constant attempt of continental block (sial) to achieve a state of equilibrium • Theory that explains that continents are “floating” on dense material *take a look at pg. 89*

  5. Continental Drift • Process that outlines that continents are slowly drifting apart from fuelled by convection currents pulling the land apart. • Evidence that supports continental drift? *take notes on pg.90-94 to outline the 6 claims that support the process*

  6. Theory of Pangea

  7. Coastline Fit • Geologic Fit • Paleoclimatology • Paleoglaciation • Fossil Correlation • Paleomagnitism

  8. Plate Tectonics • Lithosphere consists of a number of rigid slow moving plates • Plates are moving in 3 ways: 1. Moving apart: plate formation 2. Moving together: plate destruction 3. Moving past each other Who can draw and explain each of these processes?

More Related