Interesting perhaps, but by no means conclusive.
http://origins.swau.edu/papers/geologic/geology/
http://www.radiocarbon.com/labmethods.htm
There simply is never going to be an accurate scientific method one can have complete faith in that is able to tell about a time that no human can know for sure ever even existed. How can one provide evidence that can be trusted about something that hasn't been experienced?
That's simplistic I know, but I cannot conceive of scientists attempting to gain any solid proof that one would trust as more than half accurate when there is absolutely no comparison model that could come close to being useful in such a study.
Chrys