Radiometric dating of the oldest rocks found on earth

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All rights reserved. Radiometric datingradioactive dating or radioisotope dating is a technique which is used to date materials such as rocks or carbonin which trace radioactive impurities were selectively incorporated when they were formed. Inshortly after the discovery of radioactivitythe American chemist Bertram Boltwood suggested that lead is one of the disintegration products of uranium, in which case the older a uranium-bearing mineral the greater should be its proportional part of lead. At 6 PM. By Lisa Grossman.

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How Old Is Earth?

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Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks. What are the oldest rocks on Earth, and how did they form? Radioactive dating is a method of dating rocks and minerals using radioactive isotopes. Enter E-Mail address:. Planet Earth doesn't have a birth certificate to record its formation, which means scientists spent hundreds of years struggling to determine the age of the planet.

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