Isotopes are important to geologists because each radioactive element decays at a constant rate, which is unique to that element.
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Ordering archaeological finds within time periods across traditions is how archaeologists piece together the past that connects all contemporary cultures today.
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The atoms of some chemical elements have different forms, called isotopes.
However, sedimentary rocks with precipitated minerals, such as evaporites, may contain elements suitable for radioisotopic dating.
Absolute time necessary for determining age of determining the.
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