Granite carbon dating
Radiometric Dating - The Assumptions Many of the ages derived by radiometric dating techniques are highly publicized.
Nevertheless, the fundamental assumptions employed are not.
The Uranium-238 radioisotope goes through 13 transitional stages before stabilizing into Lead-206 (U238 Pb206).
In this instance, Uranium-238 is called the "parent" and Lead-206 is called the "daughter".
If this were the case, the first assumption would be deemed unreasonable.
Here are the three major assumptions for your consideration: Are these foundational assumptions reasonable?
An isotope is one of two or more atoms which have the same number of protons in their nuclei, but a different number of neutrons.
Radioisotopes are unstable isotopes: they spontaneously decay (emitting radiation in the process -- thus making them radioactive).