Sentences with phrase «obtained radiocarbon dates»

Not exact matches

He and 11 other scientists invested considerable time and effort — including 85 new radiocarbon - dated samples — to obtain the most accurate time line possible.

A team, led by Professor Thomas Higham of the University of Oxford, obtained new radiocarbon dates for around 200 samples of bone, charcoal and shell from 40 key European archaeological sites.

That expedition, 10 years ago, was to obtain paint samples that might be radiocarbon - dated.

Combining RPO and radiocarbon dating, scientists can link the most - heat - reactive organic matter to the youngest carbon dates, thereby obtaining more accurate sediment ages, which correspond to the ages of surface water plankton in the sediments.

Continuous series of tree - ring dated wood samples have been obtained for roughly the past 10,000 years which give the approximate correct radiocarbon age, demonstrating the general validity of the conventional radiocarbon dating technique.Several long tree - ring chronologies have been constructed specifically for use in calibrating the radiocarbon time scale.Some may have mistaken this to mean that the sample had been dated to 20,000 radiocarbon years.The second characteristic of the measurement of radiocarbon is that it is easy to contaminate a sample which contains very little radiocarbon with enough radiocarbon from the research environment to give it an apparent radiocarbon age which is much less than its actual radiocarbon age.

Although the estimates obtained by radiocarbon dating may more accurately represent the arrival date rather than a divergence date estimate provided by the mitogenomic data, the radiocarbon dates and divergence estimates are very similar.

Shell ages were obtained from NOSAMS (www.nosams.whoi.edu) via radiocarbon dating by sampling each shell individually in the last complete annual growth band recorded by the animal.