What is relative age dating in geology portuguese community friends meet and dating

Posted by / 09-May-2016 10:28

What is relative age dating in geology

They did not know how many thousands, millions, or billions of years ago the Cambrian period began, but they knew that it came after the Proterozoic Eon and before the Ordovician Period, and that the fossils unique to Cambrian rocks were younger than Proterozoic fossils and older than Ordovician ones.

There are two main methods determining a fossils age, relative dating and absolute dating.

But, how can we determine how old a rock formation is, if it hasn’t previously been dated?

Scientists can use certain types of fossils referred to as index fossils to assist in relative dating via correlation.

Local relationships on a single outcrop or archaeological site can often be interpreted to deduce the sequence in which the materials were assembled.

The majority of the time fossils are dated using relative dating techniques.

Using relative dating the fossil is compared to something for which an age is already known.

Index fossils are fossils that are known to only occur within a very specific age range.

organisms, geologists employ a variety of techniques.

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