Proof radiometric dating accuracy vs precision, big issues
To these two assumptions we can add the assumption of the constancy of the rate of decay of C, the assumption that dead organic matter is not later altered with respect to its carbon content by any biologic or other activity, the assumption that the carbon dioxide contents of the ocean and atmosphere has been constant with time, the assumption that the huge reservoir of oceanic carbon has not changed in size during the period of applicability of the method, and the assumption that the rate of formation and the rate of decay of radiocarbon atoms have been in equilibrium throughout the period of applicability.
He is the second lightest element and diffuses out of minerals and rocks quickly. Therefore, it is not possible to generally measure the parent-daughter proportion to determine how many half-lives have passed.
There is no easy way to confirm that that is true for the ancient past. If we had gotten it would have meant years.
The reason is that trees die, of course, and ultimately the remains decay. Closure temperatures are so high that they are not a concern.
Finally, correlation between different isotopic dating methods may be required to confirm the age of a sample. Pro also posited that "The error due to air exposure always makes the sample appear younger than it really is.
This of course means that the result is no longer anomalous, because the geologic period has been modified to fit the date. Back to top The following information was sent to me by e-mail: As long as a researcher makes sure of a reliable sample, and it is uncontaminated, pretty accurate C dating is reliable.
It is also being claimed that the different methods have distributions that are similar to one another on a given geologic period.
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