ANTHILLAsk your own question
Answer · confidence: partial

What do 1973 Yukon dig reports say, and did labs confirm the dates?

Research question: What do the primary radiocarbon and stratigraphic reports for the 1973 Northern Yukon artifacts say, and did independent labs replicate the pre-glacial-peak dates?

The records show that the source reports new radiocarbon dates on four artifacts once thought to be Pleistocene, and the dates point to a Holocene age 1. The text is truncated, so it gives no stratigraphic details and no independent lab replication 1. For Bluefish Caves, the initial radiocarbon dating suggested about 24,000 years before present 2, and a 2017 PLOS ONE study also indicated an age of about 24,000 years 5. The provided facts do not establish that independent laboratories replicated these pre-glacial-peak dates, and the one study that names its lab used only the NSF Arizona AMS Laboratory without describing replication 8. The newest dated fact is from 2018 8, about eight years before October 2026, and the provided facts do not directly cover the 1973 artifacts 1.

Checked 2026-10-21. Only documented and supported facts are used.
Dig deeper on this question

Sources

[1] supported
The source reports new radiocarbon dates on four artifacts that had been thought to be Pleistocene in age. The text is truncated, so it does not give the stratigraphic details or any independent lab replication.
"New radiocarbon dates on four artifacts that were thought to provi"
New Dates on Northern Yukon Artifacts: Holocene Not Upper Pleistocene
[2] supported
The initial radiocarbon dating from the site excavated by Jacques Cinq-Mars suggested an age of 24,000 years before present.
"the initial radiocarbon dating suggested an age of 24,000 before present (BP)."
Bluefish Caves - Wikipedia
[3] documented
The King Point date of greater than 51,100 years was based on a single 6-day count and replaced an earlier date of greater than 38,200 for the same sample.
"date is based on one 6-day count in 5-L counter at 4 atm and supersedes earlier date of >38,200 for same sample"
Geological Survey of Canada Radiocarbon Dates V (1966)
[4] supported
The early radiocarbon dates were initially considered controversial by the scientific community because they contradicted the then-accepted late-peopling theory, which placed the earliest North American settlement around 13,000 years ago.
"Ces datations furent d'abord considérées comme controversées par la communauté scientifique, car allant à l'encontre de la théorie du peuplement tardif"
Grottes de Bluefish
[5] supported
A 2017 study published in PLOS ONE presented new radiocarbon dates from Bluefish Caves, which also indicated an age of about 24,000 years.
"En 2017, une nouvelle datation réalisée sur 36 000 ossements retrouvés sur le site par Jacques Cinq-Mars indique aussi un âge de 24 000 ans"
Grottes de Bluefish
[6] supported
The 2017 PLOS ONE study by Bourgeon, Burke and Higham is titled 'Earliest Human Presence in North America Dated to the Last Glacial Maximum: New Radiocarbon Dates from Bluefish Caves, Canada'.
"Earliest Human Presence in North America Dated to the Last Glacial Maximum: New Radiocarbon Dates from Bluefish Caves, Canada"
Grottes de Bluefish
[7] supported
A bibliographic entry on this page is titled 'Arguments for Pleistocene Artifacts from the Old Crow Basin, Yukon: A Preliminary Statement', which concerns the Old Crow Basin in Yukon.
"Arguments for Pleistocene Artifacts from the Old Crow Basin, Yukon: A Preliminary Statement"
North American mammoths, page 138
[8] supported
The document only states that a single laboratory, the NSF Arizona AMS Laboratory, performed the radiocarbon dating for this study. It does not describe any independent replication by other labs, and it does not discuss 1973 artifacts.
"GregHodginsandstaffattheNSFArizonaAMSLaboratory performedtheradiocarbondating."
Nitrogen isotopes suggest a change in nitrogen dynamics between the Late Pleistocene and modern time in Yukon, Canada (2018)
[9] supported
The source describes the evidence for the oldest human remains in North America found in the Yukon as disputed.
"Disputed evidence of the oldest remains of human inhabitation in North America have been found in the Yukon."
History of Yukon