Absolute dating of a fossil klasies river mouth site dating

06-Mar-2017 21:37

Sometimes, scientists already know the age of the fossil because fossils of the same species have been found elsewhere and it has been possible to establish accurately from those when the dinosaur lived.

Scientists use two kinds of dating techniques to work out the age of rocks and fossils. This considers the positions of the different rocks in sequence (in relation to each other) and the different types of fossil that are found in them.

This is because new sediments are always laid down on top of sediments that have already been deposited.

So, when looking at the history of a cliff face, it is important to read the story it tells from the bottom layer up.

Hardened fossils are often found in layers of sedimentary rock and along the beds of rivers that flow through them.

See also index fossil, microfossil, trace fossil.fossilize verb The evidence in rock of the presence of a plant or an animal from an earlier geological period.

Scientists use two kinds of dating techniques to work out the age of rocks and fossils. This considers the positions of the different rocks in sequence (in relation to each other) and the different types of fossil that are found in them.

This is because new sediments are always laid down on top of sediments that have already been deposited.

So, when looking at the history of a cliff face, it is important to read the story it tells from the bottom layer up.

Hardened fossils are often found in layers of sedimentary rock and along the beds of rivers that flow through them.

See also index fossil, microfossil, trace fossil.fossilize verb The evidence in rock of the presence of a plant or an animal from an earlier geological period.

Ice core sampling normally uses the assumption that the ring bands observed represents years.