This does not mean that all rock samples are unreliable, but it is possible to account for a process which throws off the data for metamorphic rocks.For example, with Uranium-lead dating with the crystallization of magma, this remains a closed system until the uranium decays.With uranium-lead dating, for example, the process assumes the original proportion of uranium in the sample.
There are a number of implausible assumptions involved in radiometric dating with respect to long time periods.
One key assumption is that the initial quantity of the parent element can be determined.
It is important that the sample not have had any outside influences.
One example of this can be found in metamorphic rocks.
Because radiometric dating fails to satisfy standards of testability and falsifiability, claims based on radiometric dating may fail to qualify under the Daubert standard for court-admissible scientific evidence.
It is more accurate for shorter time periods (e.g., hundreds of years) during which control variables are less likely to change.
Any incoming negative charge would be deflected by the electron shell and any positive charge that penetrated the electron shells would be deflected by the positive charge of the nucleus itself.
This interpretation unfortunately fails to consider observed energetic interactions, including that of the strong force, which is stronger the electromagnetic force.
Radiometric dating is a method of determining the age of an artifact by assuming that on average decay rates have been constant (see below for the flaws in that assumption) and measuring the amount of radioactive decay that has occurred.
Radiometric dating is mostly used to determine the age of rocks, though a particular form of radiometric dating—called Radiocarbon dating—can date wood, cloth, skeletons, and other organic material.
Hence, elements such as potassium, which has an average lifetime of nearly 2 billion years before decaying into argon, are useful for very long time scales, with geological applications such as dating ancient lava flows or Martian rocks.