Radiometric dating vs radioactive dating Online chat chat sexual arabic

Radiometric dating vs radioactive dating

Since then, geologists have made many tens of thousands of radiometric age determinations, and they have refined the earlier estimates.A key point is that it is no longer necessary simply to accept one chemical determination of a rock's age.For example, the C14 concentration in the atmosphere depends upon cosmic ray intensity.

Since carbon dating depends upon variable cosmic ray intensity, a calibration curve is assumed to be applied to account for that.Sediment columns giving an unbroken history for more than 25,000 years have been identified in about 30 locations around the world.Coral growth patterns are also seasonal and provide a long independent date history. The dates obtained by different radiometric isotope pairs cross-check each other.There are three reasons why radiometric data is known to be accurate: 1.It depends upon radioactive decay, which is known to be extremely stable, not influenced my chemical processes, and which can be measured quite accurately.

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Anyone questioning the accuracy of radiometric methods is obliged to explain why the cross-checks to sediments, coral growth, tree rings, and other isotope pairs all have the same errors.

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