How do scientists use this dating technique to determine the ages of rocks or fossils

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Any Triceratops found below the volcanic ash may be a little older than 70 million years, and any found above may be a little younger than 70 million years. Therefore, the slate that contains the acritarch and bacteria is between million years and million years old, because the pegmatite is million years old and the granite is million years old. Determining an is used to determine the fossils and associate research curator at the first time. Third Edition. This rate is represented by the half-life, which is the time it takes for half of a sample to decay.

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The amount of time it takes for half of the parent isotopes to radioactively decay to daughter isotopes.

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18.5D: Carbon Dating and Estimating Fossil Age

In time. Varieties of the same element that have the same number of protons, but different numbers of neutrons. The rate of decay for many radioactive isotopes has been measured and does not change over time. Any Triceratops found below the volcanic ash may be a little older than 70 million years, and any found above may be a little younger than 70 million years. Some of these radioactive dating: Most sediment is either laid down horizontally in bodies of water like the oceans, or on land on the margins of streams and rivers.

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