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Earth’s story and those who first listened

Earth’s story and those who first listened. The principle of uniformitarianism. Uniformitarionism is a principle that states that the same geologic processes shaping the earth. Uniformitarianism Versus catastrophism ….

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Earth’s story and those who first listened

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  1. Earth’s story and those who first listened

  2. The principle of uniformitarianism • Uniformitarionism is a principle that states that the same geologic processes shaping the earth.

  3. Uniformitarianism Versus catastrophism … • Catastrophism is a principle that states that all geologic change occurs suddenly • Supporters of catastrophism claimed that the formation of all Earth’s features, such as it’s mountains, canyons, and seas, could be explained by rare, sudden events called catastrophes.

  4. Uniformitarianism Wins! • Despite Hutton’s observations, catastrophism remained geology’s guiding principle for decades.

  5. Relative Dating • Which come first • Relative dating – Determine whether an object or an event is older or youngest than other object or events.

  6. The principle of superposition • Superposition- is a principle that state that younger rocks lie above older rocks in undisturbed sequences.

  7. The geologic column • Geologic column- is an ideal sequence of rocks layers that contains all the known fossils and rocks formations on earth arranged from oldest to youngest.

  8. Types of unconformities • Disconformities- parallel rocks layer is missing. • Nonconformity- exists where sedimentary is. • Angular unconformity- Exist between horizontal rock layer and rock layer are titled or foled.

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