Hueyatlaco is an archeological site in Mexico, which became notorious due to geochronologists’ analyses, which have found wildly contradictory estimates for human habitation at the site, dating from ca. 370,000 (Uranium dating) to 35,000 years before present (Radiocarbon dating) [2420×3315]
by Fuckoff555
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> In mid-1969, B.J. Szabo, Malde and Irwin-Williams published their first paper about dating the excavation site. The stone tools were discovered in situ in a stratum that also contained animal remains. Radiocarbon dating of the animal remains produced an age of over 35,000 ybp. Uranium dating produced an age of 260,000 ybp, give or take 60,000 years.
[https://en.m.wikipedia.org/wiki/Hueyatlaco](https://en.m.wikipedia.org/wiki/Hueyatlaco)
Uranium-lead dating is useless for rocks younger than a million years, also it requires volcanic sedimens of the same age. In this case the site cant be older than a million years and presence of contemporary organic remains mean carbon dating would be the most accurate.