plate tectonics

  • Abraham Ortelius

    Abraham Ortelius
    Abraham ortelius Flemish cartographer and dealer in maps, books, and antiquities (who also published the first modern atlas) suggested the that the continents were once joined and noted that the coastlines of the continents appeared they fit together ,and that the Americas had been torn away from Europe and Africa.
  • Nicolaus Steno

    Nicolaus Steno
    Nicolaus Steno was a Danish geologist who had proposed the Law of Superposition which is stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.
  • James Hutton

    James Hutton
    James Hutton ,who was a Scottish geologists, used Steno's Law of superposition had compared his idea and compared rock layers to rocks above and below the rock. His evidence he had found that the granite penetrating metaphoric schists indicated the granite had been molted at the time. It showed that the granite formed from cooling of molten rock, not precipitation out of water as others at the time believed was that the granite must be youthful than the schists.
  • Alfred Wegner

    Alfred Wegner
    Alfred Wegner had proposed that the continents were once joined in a supercontinent called Pangea. He had also believed in what was once called continental drift in which Pangea's constituent portions moved thousands of miles apart over long periods of geologic time.
  • Arthur Holmes

    Arthur Holmes
    Arthur Holmes had proposed convection in the mantle force is driving the continental drift. Also that the magma is heated it tends to rise and then it cools and sinks again .
  • Harry H. Hess

    Harry H. Hess
    Developed the idea that oceanic crust forms along mid-ocean ridges and spreads out laterally away from the ridges.
  • Robert S. Dietz

    Robert S. Dietz
    Named the phenomenon seafloor spreading. Dietz’s work played a pivotal role in the development of the modern theory of plate tectonics
  • Frederick J. Vine and Drummond H. Matthews

    Frederick J. Vine and Drummond H. Matthews
    Postulated that new crust would have a magnetization aligned with Earth’s geomagnetic field. They noted that this would appear over geologic time as bands of crust that exhibit alternating patterns of magnetic polarity.
  • Dan McKenzie

    Dan McKenzie
    Proposed the Theory of Plate Tectonics, and had mathematical evidence to back his theory up. This shaped the world because it stated that all countries were once one.