How is radioactive dating used to tell the age of materials

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This page has been archived and is no longer updated. Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4. Mountains have been built and eroded, continents and oceans have moved great distances, and the Earth has fluctuated from being extremely cold and almost completely covered with ice to being very warm and ice-free. These changes typically occur so slowly that they are barely detectable over the span of a human life, yet even at this instant, the Earth's surface is moving and changing.

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Dating Rocks and Fossils Using Geologic Methods

Animals then eat the plants, by which c is integrated into their body. Most carbon is c; the nucleus contains six protons and six neutrons. If the nucleus has not yet decayed, there is always that same, slight chance that it will change in the near future. That c is slowly but continually decaying into nitrogen.

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Radiometric Dating

Radioactive dating is a method of dating rocks and minerals using radioactive isotopes. This method is useful for igneous and metamorphic rocks, which cannot be dated by the stratigraphic correlation method used for sedimentary rocks. Over naturally-occurring isotopes are known. Some do not change with time and form stable isotopes i. The unstable or more commonly known radioactive isotopes break down by radioactive decay into other isotopes.

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