continental theory and plate tectonic

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1. History of Continental Drift Theory and Plate Tectonic Theory By; Oira , Rojan Paul D. Ponce, Charity Hope O.

2. WORLD MAP

3. Alfred Wegener In 1910, Wegener formed a hypothesis which stated all the continents were once joined together in a giant landmass. He named this landmass “PANGAEA ” German geophysicist and meteorologist

4. Evidence of CONTINENTAL DRIFT

5. Wgener’s mechanism for continental drift Earth created a centrifugal force towards the equator “Pole-fleeing force“- Pangaea originated near the south pole and that the centrifugal force of the planet caused the protocontinent to break apart and the resultant continents to drift towards the equator.

6. Driving the drift Rotation of the Earth is INSUFFICIENT to move continents. WEGENER’S INABILITY to provide an adequate explanation of the forces responsible for continental drift and the prevailing belief that the earth was solid and immovable resulted in the scientific DISMISSAL OF HIS THEORY.

7. Harry Hess Seafloor spreading was proposed as a mechanism to drive the movement of the continents on the basis of symmetrical patterns of reversed and normal magnetic rocks on the sea floor