The Young Woman Found In An Idaho Gravel Quarry — And The 12,500-Year-Old Burial That Complicated The Clovis Story
The Jazwa et al.
2021 paper did not calculate a specific corrected age because the magnitude of the freshwater reservoir effect in the Snake River at the relevant period is not known.
It would require isotopic measurements of fish and water from that system at that time, which is not possible.
The paper’s conclusion was simply that the date is not reliable in the way it had been used — that it should not be cited as establishing that the burial is terminal Pleistocene in age, because the dating methodology does not support that level of confidence.
The Snake River — What It Was And Why It Mattered