# Name four types of radiometric dating. Radiometric Dating and the Geological Time Scale.

This was true at a regional, and even a global scale. To get to that point, there is also a historical discussion and description of non-radiometric dating methods. Radiometric dating is used to estimate the age of rocks and other objects based on the fixed decay rate of radioactive isotopes. It is therefore essential to have as much information as possible about the material being dated and to check for possible signs of alteration. Stimulating these mineral grains using either light optically stimulated luminescence or infrared stimulated luminescence dating or heat thermoluminescence dating causes a luminescence signal to be emitted as the stored unstable electron energy is released, the intensity of which varies depending on the amount of radiation absorbed during burial and specific properties of the mineral. ISBN An excellent introduction to radiometric dating can also be found in the talk. The Age of the Earth. Then any excess of Pb must be the result of the decay of U This predictability allows the relative abundances of related nuclides to be used as a clock to measure the time from the incorporation of the original nuclides into a material to the present. For creationists to destroy the old-Earth theory, they must destroy the credibility of radiometric dating. For example, with potassium-argon dating, we can tell the age of materials that contain potassium because we know that potassium decays into argon with a half-life of 1.

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