Second determine the percentages of the parent to the daughter elements in the rock. The percentages can be be used to calculate the number or fractions of the half lives that have occurred to create the percentages.

## Radiometric dating

Third multiple the experimentally determined half live the parent to daughter transformation by the number of half lives determined by the percentages. Note igneous rocks can be dated using these assumptions and calculations, sedimentary fossil layers can not be dated using radioactive decay.

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- How Is Radioactive Dating Used to Date Fossils? | Sciencing;
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- How can radioactive decay be used to date rocks?!

There are no usually no radioactive material found in sedimentary layers and the assumptions of no erosion are clearly not valid as sedimentary layers are formed by erosion. How can radioactive decay be used to date rocks?

## Radiometric dating - Wikipedia

Related questions What are some of the limits of radiometric dating techniques? What is a parent isotope? What is a daughter isotope? What is electron capture and how is it related to absolute dating? Alpha radiation can be stopped by paper, beta radiation can be stopped by wood, while gamma radiation is stopped by lead. Types of Radioactive Decay.

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Radioisotopes decay at a constant rate and the time taken for half the original radioisotope to decay is known as the half life. While radioisotope dating is the most commonly used method for dating fossils, other techniques do exist. Origin of Cells 6. The Blood System 3.