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theories of continental drift and sea floor spreading

By fzeidan
  • Abraham Ortelius

    Abraham Ortelius
    Continental drift- he believed that all the continents were one whole piece but they were torn away from earthquakes. His evidence for his theory that all the continents fit together like a puzzle piece.
  • James Hutton

    James Hutton
    Theory- he believed that a force rose the ground up with natural process over time with material from ruins of continents. His evidence for his theory is erosion, sedimentation, how hot springs are created, and how volcanoes are created.
  • Alfred Wegener

    Alfred Wegener
    Continental theory- he believed that all the continents were once one whole pice and he called it "Pangea." His evidence was that he found scientific papers that listed fossils, plants, and animals in the opposite sides of the atlantic. Also, that all the continents fit together like they were in a puzzle.
  • Arthur Holmes

    Arthur Holmes
    Mantle is moving the continental drift- he believed that the convection in the mantle was the force that was driving the continental drift to move. His evidence is that radioactive decay thats happening in the mantle could make heat and the convection currents could move the continents
  • Drummond Hoyle Matthews

    Drummond Hoyle Matthews
    Earths magnetic field moving- he believed that the earths magnetic field moves or switches directions over time. His evidence was that is symmetrical patterns of magnetic stripes on either side of mid-ocean ridges.
  • Harry Hess

    Harry Hess
    Sea floor spreading- he believed that oceans grew from their center point with basalt oozing out from the earths mantle that was along the mid-ocean ridges. His evidence was that new crust was created at the GGR (Great Global Rift) and it pushed under the continental crust about 300 million years ago, where that crust would melt and turn into magma. With this action happening that volcanic mountains are being created and he called them "goyuts."
  • Lawrence Morley

    Lawrence Morley
    Complicated name theory- he believed that new magma is rising up at the mid-ocean ridges that contain iron in them and the rocks magnetic elements would be locked i place at a current magnetic position. His evidence for his theory that he mapped the continents and oceans by using sensing techniques and he used satellites to get spatial data about the ocean.