It also implies that the early marine deposits along Africa's and South America's coastlines date from the Jurassic period, implying that the ocean did not exist before then. Similarities can also be found between the Caledonian and Appalachian mountains. It suggests that the 2,000 million-year-old strip of ancient rocks off the coast of Brazil corresponds to the mountain ranges of Western Africa. Rocks of Same Age Across the Oceans: Radiometric dating techniques have been used to correlate rock development across continents.Similarly, when matched, Africa, Madagascar, and India's east coast all fit together. The Matching of Continents (Jig-Saw-Fit): When facing one another, the shorelines of South America and Africa form a similarity.Note: The Himalayas and Alps were constructed by the folding of Tethys Sea deposits.Įvidence that supports the Continental Drift Theory Evidence that supports the Continental Drift TheoryĪlfred Wegener provided some evidence to support his theory, which is mentioned below: The Orogenetic Stage in which mountain-building activity took place is the fifth stage.The Rockies and Andes were formed by the westward drift of North and South America. In the fourth stage around 100 million years ago when North and South America drifted westward, resulting in the emergence of the Atlantic Ocean.In the third stages, the Tethys Sea progressively filled the area between Laurasia and Gondwanaland during the Mesozoic epoch, and it gradually broadened.Pangaea first broke into large continental masses as Laurasia and Gondwanaland forming the northern and southern components respectively. In the second stages around 200 million years ago in the Jurassic period, the supercontinent, Pangaea, began to split.The first stage occurred during the Carboniferous period, when Pangea, a supercontinent, was encircled by Panthalassa, a mega-ocean.Stages of Continental Drift Theory Various Stages of Continental Drift Theory
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