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Time, on a geologic scale, sets things in perspective

June 5, 2010
By Garry Brandenburg

Here is a question for all of you readers: Has Iowa passed more time (geologically speaking) as dry land or under the ocean? The answer is ... without any doubt ... under the ocean. And the proof is written in the rocks. The nice thing about rocks is this. They do not lie. They always tell the truth. It may take a geologist and other physical scientists to decipher the clues within the rocks. But once the story of rocks is told, it helps paint a picture for us mere mortal humans so we can try to comprehend the forces of nature that continue to run the show on earth.



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