Dynamic Crust Part 2: Continental Drift

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Alfred Wegener German Scientist 1880-1930

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Why do some of the continents appear to fit together like puzzle pieces?

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Wegener’s Theory of Continental Drift

The continents were once connected as a massive supercontinent. This huge

landmass eventually broke into pieces which slowly drifted apart over time.

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Wegener’s Theory of Continental Drift

The supercontinent was known as…

It is though to have existed approximately…

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Wegener’s Theory of Continental DriftEvidence that Continental Drift has Occurred

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Evidence #1: The Apparent Fit

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Evidence #2: Fossil Correlation

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Evidence #3: Rock Correlation

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2 Evidence for Continental Drift

SCIENCE EXPLORER Focus on Earth Science © Prentice-Hall, Inc.

Evidence #4: Paleoclimate Data

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Wegener’s theory was not accepted because he offered no mechanism for the motion of the continents.

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