Dating of fossils

The age of fossils can be determined using stratigraphy, biostratigraphy, and radiocarbon dating. Paleontology seeks to map out how life evolved across geologic time. A substantial hurdle is the difficulty of working out fossil ages. There are several different methods for estimating the ages of fossils, including:. Paleontologists rely on stratigraphy to date fossils. Stratigraphy is the science of understanding the strata, or layers, that form the sedimentary record.
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How Do Scientists Date Fossils?

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Dating a Fossil - Carbon Dating | HowStuffWorks

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.
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Accuracy of Fossils and Dating Methods

Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks. Radioactive elements decay The universe is full of naturally occurring radioactive elements. Radioactive atoms are inherently unstable; over time, radioactive "parent atoms" decay into stable "daughter atoms.
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Carbon, Radiometric Dating and Index Fossils. Carbon dating is used to determine the age of biological artifacts up to 50, years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils like those of the dinosaurs alleged to be millions of years old.
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