Why is radiometric dating important

The Mayan calendar used 3114 BC as their reference.More recently is the radiocarbon date of 1950 AD or before present, BP.Potassium and Uranium decay can not be used to directly date fossils.

Obviously Carbon 14 can not be used in mineralized fossils.

Other forms of radioactive dating are based on igneous rocks.

Since fossils are always found in sedimentary rocks these forms of radioactive dating can not be used in sedimentary layers.

In 1949, American chemist Willard Libby, who worked on the development of the atomic bomb, published the first set of radiocarbon dates.

His radiocarbon dating technique is the most important development in absolute dating in archaeology and remains the main tool for dating the past 50,000 years.

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