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How does isotopic dating work

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Radioactive decay has become one of the most useful methods for determining the age of formation of rocks. However, in the very principal of radiometric dating there are several vital assumptions that have to be made in order for the age to be considered valid. These assumptions include: 1 the initial amount of the daughter isotope is known, 2 neither parent or daughter product has migrated into, or out of, the closed rock system, and 3 decay has occurred at a constant rate over time. But what if one or some combination of these assumptions is incorrect? Then the computed age based on the accumulation of daughter products will be incorrect Stasson
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It's Official: Radioactive Isotope Dating Is Fallible

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About Uranium-Lead Dating

Dig deeper into geology by learning about everything from ancient fossils and rock formation, to present-day landslides and earthquakes. Geology Learn the Basics of Geology. Geology About Uranium-Lead Dating. Geology How Earth Was Born. Geology What Defines a Mineral? Geology What Are Plutons?
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Uranium-Lead Dating

Strontium isotopic ratios are widely used as tracers in geological processes and as indicators of provenance in an archaeological context. Since these parameters can vary widely between different geological environments, and because different geological processes can fractionate rock chemistry in predictable ways, Sr isotopic ratios serve as tracers regarding the origins of igneous rocks. Also of interest to earth scientists is the Sr isotopic composition of seawater, which has varied through geologic time. In this case, variability is set up by the competing rates of sea-floor production, and weathering of continental landmasses.
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Radiocarbon dating also referred to as carbon dating or carbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon , a radioactive isotope of carbon. The method was developed in the late s at the University of Chicago by Willard Libby , who received the Nobel Prize in Chemistry for his work in It is based on the fact that radiocarbon 14 C is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen.
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