Dirty granny chat free - Carbon dating radiometric dating
These break down over time in a process scientists call radioactive decay.
Each original isotope, called the parent, gradually decays to form a new isotope, called the daughter.
Radiocarbon dating is one of the most widely used scientific dating methods in archaeology and environmental science.
As explained below, the radiocarbon date tells us when the organism was alive (not when the material was used).
This fact should always be remembered when using radiocarbon dates.
Geologists use radiocarbon to date such materials as wood and pollen trapped in sediment, which indicates the date of the sediment itself.
Measuring isotopes is particularly useful for dating igneous and some metamorphic rock, but not sedimentary rock.
Radiocarbon dating measures radioactive isotopes in once-living organic material instead of rock, using the decay of carbon-14 to nitrogen-14.