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Page 1: Keynote - Continental Driftearthtoreilly.com/documents/plate-tectonics/Keynote... · Continental Drift ¥ Continental Drift - the theory that all of the continents were once joined

Continental DriftWhat is continental drift?

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Continental Drift• Continental Drift - the theory that all of the continents were once

joined together in a single landmass and have since drifted apart

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Continental Drift• Pangaea - “all Earth” or name given to the super continent that

existed 200 million years ago

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Continental Drift• Alfred Wegener, 1915

• German geologist and meteorologist

• Proposed the theory of continental drift

• Hypothesized a super continent

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Continental Drift• Evidence

1. Similarities in the shape of Africa’s west coast and South America’s east coast

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Jigsaw Fit of the Continents

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Continental Drift• Evidence

2. Fossil remains of the Mesosaurus were found in South America and South Africa

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Mesosaurus Size

10 cm

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Mesosaurus Size

Atlantic Ocean

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Continental Drift• Evidence

3. Fossil remains of the Glossopteris were found throughout India, South America, Africa, and Antarctica

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Fossilized Glossopteris Leafs

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Plate Movement

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Plate Movement

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The Amoeba People

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