Start Three methods of dating rocks

Three methods of dating rocks

Scientists know that the layers they see in sedimentary rock were built up in a certain order, from bottom to top.

Sort of an offshoot of stratigraphic succession is fossil succession, or a method in which scientists compare fossils in different rock strata to determine the relative ages of each.

Which of these does a better job of describing my age? So, in both geology and paleontology, we want to be able to point to an object and say exactly how old it is.

To do that, we have to learn a little bit about radioactive decay.

One of the biggest jobs of a geologist is establishing the absolute age, in years, of a rock or fossil.