“…the results suggest that the Norse cut down these trees within a few months of each other in 1021.”
“That precision was possible thanks in part to the IntCal20 calibration curve, which is the first radiocarbon calibration curve to break down changes in atmospheric carbon levels into single-year increments.”
“The Norse may have been at the site slightly earlier, but they were definitely there and cutting down trees by 1021.”
(https://arstechnica.com/science/2021/10/vikings-were-in-north-america-by-1021-ce/)
In 1960, L’Anse aux Meadows was discovered “with the assumed historical age of ca AD 1000”.
In the 1970s and 1980s, charcoal was used for radiocarbon dating.
In 2016, “progress in high-precision calibrations of radiocarbon dates has led to evaluations of earlier research” and concluded that “the calibrated age range of L’Anse aux Meadows is AD 975–1020.”
With this new research, we now have an even more definitive date.
danelabonte 