Dating geology in relative
Dating geology in relative - Flim izle amator wep cams video
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.
Paul is super awesome, so I'm going to take him at his word.
Along the way, we'll learn how stratigraphic succession and radioactive decay contribute to the work of paleontologists.
Consider the following scenario: Paul the Paleontologist is a very famous scientist who has studied dinosaur bones all over the world.
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.
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 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!One of the biggest jobs of a geologist is establishing the absolute age, in years, of a rock or fossil.Unlike relative dating, which only tells us the age of rock A compared to rock B, numerical dating tells us the age of rock A in x number of years.As a member, you'll also get unlimited access to over 70,000 lessons in math, English, science, history, and more.