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As any first-year student of algebra soon learns, a single equation with two unknown variables cannot be solved.In fact, the above formula is far too simple, because it assumes that the amount of daughter isotope was zero at start.In these cases, lava of a known age of no more than several thousand years (and in one case, no more than ten years) had argon in it when it formed, so that the rock was calculated by K-Ar dating to be millions of years old, even though it was known to be only thousands of years old.Numerous fossils have been found in strata inconsistent with the evolutionary model of Earth's history.While astronomers have found that magnetars emit radiation that could cause bouts of accelerated decay, and that these bouts may be more common than originally thought, the amount of heat produced by the radiation during the short period presents a problem for creationists.
A date that disagrees with that interpretation is dismissed as an anomaly.
These out of place fossils would seem to pose a problem for radiometric dating methods which are still calibrated based on the position of fossils (relative dates) in the geologic column.
However, these fossils are not problematic if one simply disregards their existence.
The amount of the isotope in the object is compared to the amount of the isotope's decay products.
The object's approximate age can then be figured out using the known rate of decay of the isotope.Radiometric dating is based on the decay rate of these isotopes into stable nonradioactive isotopes.To date an object, scientists measure the quantity of parent and daughter isotope in a sample, and use the atomic decay rate to determine its possible age.This makes independent testing of these dating methods impossible, since published discrepant dates are rare.