Radiometric dating answers com


06-Feb-2018 18:09

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For inorganic matter and for older materials, isotopes of other elements, such as potassium, uranium, and strontium, are used.

Radioactivity was discovered in 1896 by Henri Becquerel.

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This figure is in good agreement with the age of meteorites and the age of the Moon as determined independently. Any technique which dates a material based on the known decay rate of a radioactive component of the material is a form of radiometric dating.

How does radiometric dating help scientists pinpoint the age of a fossil? Radiometric dating allows scientists to find fossils in only the lowest and oldest layers of sediment. Radiometric dating shows the rate of decay of radioactive material present in any object. Scientists can use that data to find the absolute age of the fossil. In radiometric dating, scientists mix the carbon in a fossil with carbon from similar fossils whose age they know.Amazingly, this was all done before isotopes were known, and before the decay rates were known accurately.