Carbon dating doesnt work psychologically intimidating questions


19-Feb-2017 16:40

Critics charged that the findings were mistaken or that what she called soft tissue was really biofilm produced by bacteria that had entered from outside the bone.

Schweitzer answered the challenge by testing with antibodies.

Her report in 2009 confirmed the presence of collagen and other proteins that bacteria do not make.

In 2011, a Swedish team found soft tissue and biomolecules in the bones of another creature from the time of the dinosaurs, a Mosasaur, which was a giant lizard that swam in shallow ocean waters.

The technique hinges on carbon-14, a radioactive isotope of the element that, unlike other more stable forms of carbon, decays away at a steady rate.

Organisms capture a certain amount of carbon-14 from the atmosphere when they are alive.

It's accuracy has been verified by using C-14 to date artifacts whose age is known historically.

The fluctuation of the amount of C-14 in the atmosphere over time adds a small uncertainty, but contamination by "modern carbon" such as decayed organic matter from soils poses a greater possibility for error. Thomas Seiler, a physicist from Germany, gave the presentation in Singapore.

Carbon dating is used to work out the age of organic material — in effect, any living thing.As a rule, carbon dates are younger than calendar dates: a bone carbon-dated to 10,000 years is around 11,000 years old, and 20,000 carbon years roughly equates to 24,000 calendar years.The problem, says Bronk Ramsey, is that tree rings provide a direct record that only goes as far back as about 14,000 years.After the AOGS-AGU conference in Singapore, the abstract was removed from the conference website by two chairmen because they could not accept the findings.



Nov 27, 2012. Radiocarbon dating works by comparing the three different isotopes of carbon. Isotopes of a particular element have the same number of.… continue reading »


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Mar 30, 2017. By developing new ways to use radiocarbon in tree rings, a UA. In addition to his work as an astronomer at the UA's Steward Observatory. the 20 to 50-year ballpark of radiocarbon dating doesn't quite keep up with it.… continue reading »


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