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Radiometric dating has been used to determine the ages of the Earth, Moon, meteorites, ages of fossils, including early man, timing of glaciations, ages of mineral deposits, recurrence rates of earthquakes and volcanic eruptions, the history of reversals of Earth's magnetic field, and many of other geological events and processes.Dating techniques are procedures used by scientists to determine the age of a specimen.Types of Radiometric Dating Scientists use different radiometric-dating methods based on the estimated age of an object. 3 billion years, and it decays leaving a daughter material of argon.* This method is used mainly to date rocks older than 100,000 years.* This technique can be used to determine the age of unheated sediments les than 500,000 years old.a disadvantage to this technique is that in order to get accurate results, the sediment to be tested cannot be exposed to light, making sampling difficult.

If an igneous or other rock is metamorphosed, its radiometric clock is reset, and potassium-argon measurements can be used to tell the number of years that has passed since metamorphism.Has the advantage of covering the time interval between radiocarbon and pottasium-argon dating or 40,000,000 years.*Optically Stimulated Luminescence (OSL) – very similar to thermoluminescence dating, both of which are considered “clock setting”.– This dating is not a single method of absolute dating but instead a group of related methods for absolute dating of samples.* Because radioactive decay occurs at a steady rate, * Scientists can use the relative amounts of stable and unstable isotopes present in an object to determine the object’s age. In radioactive decay, an unstable radioactive isotope of one element breaks down into a stable isotope.* The stable isotope may be of the same element or of a different element. Daughter isotope * The stable isotope produced by the radioactive decay of the parent isotope.

Radioactive elements are unstable; they breakdown spontaneously into more stable atoms over time, a process known as radioactive decay.