Isotopes used dating archaeological finds introduction for dating profile

22-Mar-2020 15:26

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They use absolute dating methods, sometimes called numerical dating, to give rocks an actual date, or date range, in number of years.

This is different to relative dating, which only puts geological events in time Most absolute dates for rocks are obtained with radiometric methods.

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Geologists often need to know the age of material that they find.

Isotopes are important to geologists because each radioactive element decays at a constant rate, which is unique to that element.

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