Relative or absolute dating

Similarly for paleontologists who find layers of fossils.

By deducing which fossils are formed in the sequence of time, the periods when the particular fossilized entities existed can be arranged in order without the actual dates of when the fossils were laid down.

The primary difference is that absolute dating assigns an actual time or age to an event or object.For example: If an archaeologist is studying past civilizations, the archaeologist may be able to say that in a particular location the ruins of once civilization were found to have been build on another and so the layers unearthed in an excavation convey the sequence of historical occupations without revealing the actual dates.If the archaeologist finds a sample suitable for carbon dating, then an absolute date may be assigned to an object.For example, carbon dating is used to determine the age of organic materials.Once something dies, it ceases taking in new carbon-14, and the existing carbon-14 within the organism decays into nitrogen at a fixed rate.

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