Difference between carbon dating and radiometric dating
Again, this doesn't tell them exactly how old the layers are, but it does give them an idea of the ordered sequence of events that occurred over the history of that geologic formation.
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.
He could be pretty confident that his super awesome dinosaur was about 175 million years old.
Stratigraphic and fossil succession are good tools for studying the relative dates of events in Earth's history, but they do not help with numerical dating.
In 1896, a French physicist named Henri Becquerel discovered radioactivity in an element called uranium.
He saw that it underwent radioactive decay, or emission of energetic particles to produce new elements.
In this method, scientists compare different layers of rock to determine an ordered sequence of events in geologic history.
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.
In fact, Paul already knows that coelophysis lived around 200 million years ago, while iguanodon lived around 150 million years ago.
So, what if Paul found that superus awesomus dinosaur fossil in this middle layer?