2 methods dating fossils

These use radioactive minerals in rocks as geological clocks.The atoms of some chemical elements have different forms, called isotopes.

Chronometric dating has advanced since the 1970s, allowing far more accurate dating of specimens.Chronometric dating, also known as chronometry or absolute dating, is any archaeological dating method that gives a result in calendar years before the present time.Archaeologists and scientists use absolute dating methods on samples ranging from prehistoric fossils to artifacts from relatively recent history.However, rocks and other objects in nature do not give off such obvious clues about how long they have been around.So, we rely on radiometric dating to calculate their ages.

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