News articles on carbon dating
The estimate closely matches that of a decades-old benchmark for Mayan dating, the so-called Goodman-Martinez-Thompson method.According to the Goodman-Martinez-Thompson estimate, the big victory occurred around AD 695-712.Will excavation be of any help and whether carbon dating will help in proving about the ''identity'' of the demolished structure? Not surprisingly, Lucknow University professors are finding themselves surrounded by people posing innumerable queries.Geologist and pro vice-chancellor of Lucknow University Prof MP Singh explained that carbon dating was a process through which age of an organic matter could be detected by finding the amount of a particular type of carbon atom (C14) in the matter, while comparing it with the standard amount of that particular carbon atom present in the organic matter today.If the amount of C14 in the excavated organic matter is half of that found in standard amount, then it can be said that the matter excavated is around 5730 years old with an error of 30-40 years.The process is called detection of ''half life'' of the matter and is done through a ''mass spectrometer''.That figure was bolstered by early use of carbon-14 dating on two other wooden beams from Tikal in the 1950s.
"The Long Count calendar fell into disuse before European contact in the Maya area," says the study's lead author Douglas J Kennett from Pennsylvania State University.
By further using this scale, the exact age of the matter could be found, he said.
Dr Dhruvsen Singh, geology department, said that there was also a risk of ''contamination'' in the carbon dating.
An example of the confusion this has caused is the date of a decisive battle that shaped the course of Mayan civilisation.
It occurred at nine Bak'tuns, 13 K'atuns, three Tuns, seven Winals and 18 K'ins -- or 1,390,838 days from the start of the count.