What is the limitation of potassiumargon dating

If these assumptions are correct, then the radiometric dates are correct.

However, there is no way to independently test these assumptions.

If all of these assumptions are correct, then the resulting dates are correct.

However if even one of these assumptions is wrong, then the resulting dates are erroneous.

For example, if a scientist believes a piece of rock is 4.

This involves circular reasoning, as is clearly evident in the article on dating in the Encyclopedia Britannica: In turn, the geochronologist relies on the geologist for relative ages.

A similar problem occurs with radiometric dating of rocks.

The discrepancies between the rejected and the accepted are arbitrarily attributed to excess or loss of argon.

That the original composition of the rock contained no daughter atoms.

That the decay rate of parent atom to daughter atom has always remained constant.

A contemporaneous pole from stable Europe is tentatively deduced from African and North American Late Triassic/Early Jurassic poles using different reconstruction models around the North Atlantic Ocean.

The divergence between this pole and the Iberian pole corresponds to the result obtained for Permian poles.

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