Dating at the young age
These techniques are applied to igneous rocks, and are normally seen as giving the time since solidification.
The isotope concentrations can be measured very accurately, but isotope concentrations are not dates.
C) dating usually want to know about the radiometric dating methods that are claimed to give millions and billions of years—carbon dating can only give thousands of years.
For example, potassium-40 decays to argon-40; uranium-238 decays to lead-206 via other elements like radium; uranium-235 decays to lead-207; rubidium-87 decays to strontium-87; etc.So, we have a “clock” which starts ticking the moment something dies.Obviously, this works only for things which were once living.That is, they take up less than would be expected and so they test older than they really are.Furthermore, different types of plants discriminate differently.