Radiocarbon dating by sheridan bowman dating directory online site
Approaching archaeological techniques and artifacts from an interpretive viewpoint, the series looks in detail at specific classes of artifacts that have contributed most to our knowledge of the past, and at particular investigative techniques that are now being used to refine this knowledge and thereby to question previous assumptions.
Though the vast majority of CO2 is comprised of the more common and stable isotope of carbon, carbon 12 (C12), a small fraction of CO2 (one in 765 million), contains C14.
This accomplishment was strategically initiated by Willard Libby when he asked for mainstream assistance with the validation of his pioneering Radiocarbon Dating technique."The History of the Radiocarbon Dating Technique Interpreting the Past: Radiocarbon Dating (1990)by Sheridan Bowman(This short booklet is the perfect primer for a layperson seeking a review of the technical details and limitations of the radiocarbon dating technique.
If you feel that you already know this technique in sufficient detail to understand why Libby needs a global constant C14 concentration, feel free to skip ahead ...)"The existence of radiocarbon in nature was predicted before it was detected.
Yet, as simple and straightforward as this seems, the process of dating objects via radiocarbon is far from simple and straightforward.
Here I will present what radiocarbon is, the dating methods, the assumptions that govern them, and the known discrepancies that plague the method.
The method was developed by Willard Libby in the late 1940s and soon became a standard tool for archaeologists.