why do geologists use radioactive dating / Radiometric Dating Does Work! | National Center for Science Education

why do geologists use radioactive dating

why do geologists use radioactive dating

Dating methods must also rely on another kind of science called historical science. Isotopes are varieties of an element that have the same number of protons but a different number of neutrons within the nucleus. Ogg, and Alan G. For example, uranium will radioactively decay through a series of steps until it becomes the stable element lead. First, the Cretaceous and Tertiary periods were defined by geologists in the early s. Because, the unknown fossil, the red sponge, was found with the fossils in fossil assemblage B it also must have existed during the interval of time indicated by the red box. This is the same as the rubidium-strontium age obtained for ancient basalt layers deep below the walls of the eastern Grand Canyon.

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WHY DO GEOLOGISTS USE RADIOACTIVE DATING / morphy.info