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How Carbon Dating Works
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Table III. As the mineral cools, the crystal structure begins to form and diffusion of isotopes is less easy. These isotopes decay within the rocks according to their half-life rates, and by selecting the appropriate minerals those that contain potassium, for instance and measuring the relative amounts of parent and daughter isotopes in them, the date at which the rock crystallized can be determined. Also called electron paramagnetic resonance, ESR dating also relies on the changes in electron orbits and spins caused by radioactivity over time. The atoms of some chemical elements have different forms, called isotopes. Understanding the ages of related fossil species helps scientists piece together the evolutionary history of a group of organisms. In uranium—lead dating , the concordia diagram is used which also decreases the problem of nuclide loss. This page is URL: After one half-life has elapsed, one half of the atoms of the nuclide in question will have decayed into a "daughter" nuclide or decay product.
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