Home / dating meet online parent site / Carbon 14 dating technique

Carbon 14 dating technique

Archaeologists have long used carbon-14 dating (also known as radiocarbon dating) to estimate the age of certain objects.Traditional radiocarbon dating is applied to organic remains between 500 and 50,000 years old and exploits the fact that trace amounts of radioactive carbon are found in the natural environment.

Forensic anthropologists at The University of Arizona took advantage of this fact in a recent study funded by NIJ.The researchers wanted to find out if they could identify a person's year of birth or year of death using precise measurements of carbon-14 levels in different post-mortem tissues.They measured carbon-14 levels in various tissues from 36 humans whose birth and death dates were known.To determine year of birth, the researchers focused on tooth enamel.Adult teeth are formed at known intervals during childhood.The researchers found that if they assumed tooth enamel radiocarbon content to be determined by the atmospheric level at the time the tooth was formed, then they could deduce the year of birth.They found that for teeth formed after 1965, enamel radiocarbon content predicted year of birth within 1.5 years.Radiocarbon levels in teeth formed before then contained less radiocarbon than expected, so when applied to teeth formed during that period, the method was less precise.To determine year of death, the researchers used radiocarbon levels in soft tissues.Unlike tooth enamel, soft tissues are constantly being made and remade during life.Thus, their radiocarbon levels mirror those in the changing environment.

842 comments

  1. For some reason, which I have not yet figured out, at least one person per week has been asking me about the Carbon-14 Radiometric Dating Technique.

Leave a Reply

Your email address will not be published. Required fields are marked *

*