Magnetic striping - PowerPoint PPT Presentation

Today – 1/23

Today – 1/23. Critter in the news Reading background History of dinosaur discoveries. ScienceDaily.com. P-T extinction. Before: simple and complex marine ecosystems exist in equal numbers After: complex marine ecosystems outnumber simple ones 3 to 1

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T ECTONIC P LATES

T ECTONIC P LATES. Last Day Wegener’s Continental Drift Theory the continents were not always where they are today but rather have drifted apart over millions of years. Last Day Evidence for Continental Drift Theory includes: jigsaw puzzle fit of continent, geological structures

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254 views • 24 slides

12.1 Evidence for Continental Drift

12.1 Evidence for Continental Drift. Early maps of the world caused Wegener to propose the continental drift theory. The continents looked as though they might fit together like puzzle pieces. The continental shelves actually fit together even better.

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908 views • 6 slides

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