Errors in radiocarbon dating Camlivereal
It is not correct to state or imply from this evidence that the radiocarbon dating technique is thus shown to be generally invalid.
Reports of young radiocarbon ages for coal probably all stem from a misunderstanding of one or both of these two factors.
These two measures of time will only be the same if all of the assumptions which go into the conventional radiocarbon dating technique are valid.
Comparison of ancient, historically dated artifacts (from Egypt, for example) with their radiocarbon dates has revealed that radiocarbon years and calendar years are not the same even for the last 5,000 calendar years.
In the early days of radiocarbon analysis this limit was often around 20,000 radiocarbon years.
Thus, all the researcher was able to say about samples with low levels of radiocarbon was that their age was greater than or equal to 20,000 radiocarbon years (or whatever the sensitivity limit of his apparatus was).