A version of this article has been published in the WikiJournal of Science. I am about to go through the article and change some of the text to incorporate modifications made to that article during peer review. If anyone feels the changes are not an improvement, please comment here. The above is interesting and the info from it should probably go into the article. That's a bit bare-bones and context-free, though. What I'd really like to say is something like "this data will be incorporated into the next INTCAL curve" and will help improve the accuracy of 14C dating", but I can't do that with just this article.
Radiocarbon Dating | Definition of Radiocarbon Dating by Merriam-Webster
How can scientists accurately date when stone tools were made, like those found at Lake Turkana in Kenya? Radiocarbon dating is widely used to date materials like charcoal from hearths and carbonate in snail shells, Dr. Kent said, but it is limited to about the last 50, years because of the short half-life of carbon For older sediments, techniques include tephrochronology involving potassium and magnetostratigraphy involving iron.
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Radiocarbon dating is a key tool archaeologists use to determine the age of plants and objects made with organic material. But new research shows that commonly accepted radiocarbon dating standards can miss the mark -- calling into question historical timelines. Archaeologist Sturt Manning and colleagues have revealed variations in the radiocarbon cycle at certain periods of time, affecting frequently cited standards used in archaeological and historical research relevant to the southern Levant region, which includes Israel, southern Jordan and Egypt.