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Day 124: The Earth’s Story March 7, 2007

Posted by Admin in Geology.
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Today we discussed the theories of uniformitarianism and catastrophism today in class.  These differing theories on how the Earth’s landforms have been shaped over time were up for much debate in the late 18th and early 19th centuries.  Today, scientific evidence clearly indicates that uniformitarianism is the overriding theme of the geologic environment – that is, that most geologic change occurs very gradually over long periods of time.  That does not exclude catastrophes from taking place, however.  Earthquakes, volcanoes, and tsunamis still cause rare, sudden, and dramatic changes in the landscape around the world.

Tomorrow we’ll continue this discussion by bringing another scientist into the mix:  Charles Lyell.  Following the conclusion of those notes, we’ll begin discussing the debate poster project that will be tackled for Friday (due on Monday).

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