Scientists are always spouting information about the ages of rocks and fossils. Well, they figure it out using two different methods: relative dating and numerical dating.
Let's find out more about these geological dating methods in order to understand how Paul the Paleontologist can be so sure about the age of his dinosaur fossils.
The most common form of relative dating is called stratigraphic succession.
Scientists piece together a story of how one event came before or after another.
Relative dating cannot tell us the actual age of a rock; it can only tell us whether one rock is older or younger than another.
Let's say that Paul the Paleontologist found an iguanodon fossil in the light green layer shown above.
And, he also found a coelophysis fossil in the yellow layer. Of course, the coelophysis, which means that coelophysis came before iguanodon.
Absolute dating is the process absolute dating provides a numerical age or range in contrast with relative dating which places other radiometric dating.
For example, instead of pm we might say ‘lunch time.
What is the difference between relative & radiometric dating?
For example, 60 million years is a measure of absolute time. This is different to relative dating, which only puts geological events in time. Australia offer a fun selection of free stuff radiometric dating dating available relative radiometric compare all over.
The first method that scientists use to determine the age of rocks is relative dating.
In this method, scientists compare different layers of rock to determine an ordered sequence of events in geologic history.
But really, how do scientists figure out how old their dinosaur bones are?