Convection Current Theory (CCT)

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 Convection Current Theory (CCT)It was first suggested by a German meteorologist,  Alfred Wegener  in 1912. Body. According to the  theory , all the  continents  formed a single 


Wegener was drawn to this idea because of the puzzling questions he had in his mind.

  • How could tropical ferns have grown in London, Paris, Bonn and even in Greenland?
  • Why are the coal belts found in extremely cold regions of tundra?
  • How are glacial pieces of evidence found in tropical regions of Brazil, Indian peninsula, Australia and Congo basin?
Evidence that supports the theory
  • The Matching of Continents (Jig-Saw-Fit): The shorelines of Africa and South America facing each other match remarkably.
  • Rocks of Same Age Across the Oceans: radiometric dating methods have correlated the rock formation in different continents.
  • Tillite: The glacial tillite found in Gondwana system of sediments has its resemblance to six different landmasses of the Southern Hemisphere. Counterparts of this succession are found in Africa, Falkland Island, Madagascar, Antarctica and Australia besides India.
  • Placer Deposits: The placer deposits of gold in the Ghana coast do not have source rock in the region. The gold deposits of Ghana have been derived from the Brazil plateau when the two continents lay side by side

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