In radiometric dating, the amount of a certain radioactive isotope in an object is compared with a reference amount. Before radiometric dating it was difficult to determine the actual age of an object. Method 3: Radiometric dating has been used ever more widely for the past forty years. Who are you? When every one of four or five different minerals from the same igneous formation matches the isochron perfectly, it can safely be said that the isochron is correct beyond a reasonable doubt. This rate provides scientists with an accurate measurement system to determine age.
What is radiometric dating?
Radiometric dating methods are the strongest direct evidence that geologists have for the age of the Earth. So when an atom decays and changes into an atom of a different element, its shell structure changes and it behaves in a different way chemically. So an atom of potassium K40atomic number 19 can absorb an electron to become an atom of argon Ar40atomic number