pangaea and continental drift
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Pangaea and Continental Drift. In 1915, Alfred Wegner, came up with the theory of “ C ontinental Drift.” He believed that Earth’s crust drifted slowly on top of a liquid core. He hypothesized that Earth was one super continent that he called Pangaea. Pangaea means “All Land”. - PowerPoint PPT PresentationTRANSCRIPT
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Pangaea and Continental Drift
![Page 2: Pangaea and Continental Drift](https://reader030.vdocuments.net/reader030/viewer/2022033023/56815da5550346895dcbd3ff/html5/thumbnails/2.jpg)
• In 1915, Alfred Wegner, came up with the theory of “Continental Drift.” He believed that Earth’s crust drifted slowly on top of a liquid core.
• He hypothesized that Earth was one super continent that he called Pangaea.
• Pangaea means “All Land”
![Page 3: Pangaea and Continental Drift](https://reader030.vdocuments.net/reader030/viewer/2022033023/56815da5550346895dcbd3ff/html5/thumbnails/3.jpg)
• Wegner also proposed that Pangaea first broke into 2 large land masses, Laurasia and Gondwanaland.
• These two continents would continue to be broken apart over time.
![Page 4: Pangaea and Continental Drift](https://reader030.vdocuments.net/reader030/viewer/2022033023/56815da5550346895dcbd3ff/html5/thumbnails/4.jpg)
• Fossil evidence also supports this theory. Tropical plants have been found in coal deposits in Antarctica.
![Page 5: Pangaea and Continental Drift](https://reader030.vdocuments.net/reader030/viewer/2022033023/56815da5550346895dcbd3ff/html5/thumbnails/5.jpg)
• Today’s theory of Plate Tectonics is a more complete picture that includes evidence that the continents have moved and are still moving
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Evidence for Continental Drift
• Go to p. 277-278 in book. Write the different clues for evidence of Pangaea.
• Fossil clues• Widespread plant clues• Climate clues• Rock clues
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