the whore dating show - Geologic dating activity

The most common form of relative dating is called stratigraphic succession.This is just a fancy term for the way rock layers are built up and changed by geologic processes.Scientists know that the layers they see in sedimentary rock were built up in a certain order, from bottom to top.

geologic dating activity-65geologic dating activity-47

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?

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.

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.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.In 1905, Ernest Rutherford figured out that we could use radiation to establish the ages of rocks.By studying how the mass of uranium changed with radioactive decay, Rutherford was able to determine the age of a rock containing a uranium mineral. It meant that scientists could suddenly establish the actual ages of all their rocks and fossils!Recently, he appeared on the evening news to talk about a new dinosaur he just discovered. Paul says he can tell from the fossils that superus awesomus lived on Earth about 175 million years ago.

Tags: , ,