Doubts radiometric dating

06-Nov-2017 16:38

Libby, the discoverer of the C14 dating method, was very disappointed with this problem.He understood that archaeological artifacts were readily available.Credit: NIPR/Ibaraki University/JAMSTEC The Earth's magnetic field periodically reverses such that the north magnetic pole becomes the south magnetic pole.The latest reversal is called by geologists the Matuyama-Brunhes boundary (MBB), and occurred approximately 780,000 years ago.Dates up to this point in history are well documented for C14 calibration.For object over 4,000 years old the method becomes very unreliable for the following reason: Objects older then 4,000 years run into a problem in that there are few if any known artifacts to be used as the standard.The team studied volcanic ash that was deposited immediately before the MBB.This volcanic ash contains small crystals called zircons.

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The second method measures the rate of plate motion based on GPS readings of the precise locations of the plates (Y axis).

After all, this what the archeologist guessed in their published books.

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