Explain relative dating of fossils dating reptialian women

Radioactive dating allows us to find an approximate date.

So if something is dated about a thousand years ago plus or minus… The first is relative dating which examines the layers of rock around the fossil to find an approximate date.

If the rock has been undisturbed, the oldest rock will be at the bottom, therefore, the oldest fossils will also be at the bottom.

The question setting require some modification However,fossils are used in relative dating of rock layers in stratigraphic column;specific type of fossils know as index fossils are used.Over time, Geoscientists developed schemes for the sequence of the occurrences of numerous index fossils. Geologists can either use relative dating in which they relate the position of the fossils they found in strata to other substances found in other layers of the earth's crust, for which they know the date.These schemes are independent of absolute time, because they only describe, where in the sequence of index fossils a certain fossil occurs, e.g. There is also absolute dating in which geologists use "radioactive dating" to determine the absolute age of fossils or any specimen they wish to date.To determine a fairly precise age of a rock or mineral, geologists use a method called radiometric dating, which involves the determination of the amount of certain isotopes that are present.The age is based on the half-life of the isotopes (their rate of decay over time).

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