Radiometric dating used to date fossils

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Dating Fossils – How Are Fossils Dated?

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Dating the Fossils and Artifacts that Mark the Great Human Migration

Since the early twentieth century scientists have found ways to accurately measure geological time. The discovery of radioactivity in uranium by the French physicist, Henri Becquerelin paved the way of measuring absolute time. Shortly after Becquerel's find, Marie Curiea French chemist, isolated another highly radioactive element, radium. The realisation that radioactive materials emit rays indicated a constant change of those materials from one element to another. The New Zealand physicist Ernest Rutherfordsuggested in that the exact age of a rock could be measured by means of radioactivity.

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