Relative age dating vs absolute age dating Strangers sex video chat free
Scientists know that the layers they see in sedimentary rock were built up in a certain order, from bottom to top.When they find a section of rock that has a lot of different strata, they can assume that the bottom-most layer is the oldest and the top-most layer is the youngest.That means they don't really know how old their rocks actually are.The key in relative dating is to find an ordered sequence.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 most common form of relative dating is called stratigraphic succession.
So, what if Paul found that superus awesomus dinosaur fossil in this middle layer?
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.
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.