Definition of chronometric dating

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.Scientists know that the layers they see in sedimentary rock were built up in a certain order, from bottom to top.

If I told you I was 32 years younger than my mother, that number would be my relative age.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?Free 5-day trial Learn how scientists determine the ages of rocks and fossils.We'll explore both relative and numerical dating on our quest to understand the process of geological dating.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.But really, how do scientists figure out how old their dinosaur bones are?And, what about other findings like fossil fish, plants and insects?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.

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