What does bp stand for in radiocarbon dating Sexchat ukrain
Uncalibrated radiocarbon dates should be clearly noted as such by "uncalibrated years BP", because they are not identical to calendar dates.This has to do with the fact that the level of atmospheric radiocarbon (carbon-14 or C) has not been strictly constant during the span of time that can be radiocarbon-dated.
The technique of radiocarbon dating was discovered by Willard Libby and his colleagues in 1949 during his tenure as a professor at the University of Chicago.
He first demonstrated the accuracy of radiocarbon dating by accurately measuring the age of wood from an ancient Egyptian royal barge whose age was known from historical documents.
One of the frequent uses of the technique is to date organic remains from archaeological sites.
The BP scale is sometimes used for dates established by means other than radiocarbon dating, such as stratigraphy.
Alan Kolata, a major authority on Tiahuanaco, rubbishes all arguments that attribute the construction of the site to some forgotten episode and people.