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Modern fossil dating techniques

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Love-hungry teenagers and archaeologists agree: dating is hard. But while the difficulties of single life may be intractable, the challenge of determining the age of prehistoric artifacts and fossils is greatly aided by measuring certain radioactive isotopes. Until this century, relative dating was the only technique for identifying the age of a truly ancient object. By examining the object's relation to layers of deposits in the area, and by comparing the object to others found at the site, archaeologists can estimate when the object arrived at the site.
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Accuracy of Fossils and Dating Methods

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How Do Scientists Date Ancient Things? | Live Science

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Dating methods

There is no single ideal method of dating that can produce accurate results for every kind of sample, in every context, for every chronology. Each method of dating has constraints around its use and effectiveness. Not all methods are well-suited for each situation — and sometimes it is just not possible to use a particular dating method. To gain a reliable date from bone using the radiocarbon, or C dating method, we need to be able to extract the protein from it — collagen and gelatin. The challenge here is that the amount of protein remaining in the bone decreases with age, to the point where there may not be much left in the sample at all.
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But what is exactly a fossil and how is it formed? Have you ever wondered how science knows the age of a fossil? Read on to find out!
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