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Fossil dating methods ppt how to write effective online dating messages

Look for “absolute” ages such as cornerstones, dates carved into fresh concrete, or dates stamped on manhole covers.

Geologists draw on it and other basic principles ( to determine the relative ages of rocks or features such as faults.

Like the other kind of dating, geologic dating isn’t always simple.

Activity: Further discussion: Good overview as relates to the Grand Canyon: age dating: Use with this cross section of the Grand Canyon from the USGS’s teaching page: Canyon Have students reconstruct a simple geologic history — which are the oldest rocks shown? Are there any that you can’t tell using the Rule of Superposition?

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