Lapedo remains affected by lightning strikes; redating by bootstrap

 The remains of what is dubbed the Lapedo Child were originally estimated, based on stratigraphy and associated artifacts in upper sediments, to date from some time between ~40,000 and ~23,000, as Solutrean tools were found in layers above the burial, and the lower deposits were correlated to the late middle Paleolithic-upper paleolithic transition/OIS 3. 

Redating of the remains using hydroxyproline was published, from which I produced a model-based correction that may adjust for multiple scavenging-superposition effects within radiocarbon correction curves, which are never local in nature. My model is tabulated in this post, and the paper from which the left column dates were published is here in .pdf form: 

Linscott et al. 2025

https://pmc.ncbi.nlm.nih.gov/articles/PMC11887806/pdf/sciadv.adp5769.pdf

Ochre staining covering the skeletal remains is consistent with effects on oxides from lightning strikes affecting the remains, reducing the oxidation state of particles of iron oxides/hydroxides, which then re-oxidize - causing a maroon shift in the color spectrum. 14C:12C is increased by lightning, which scavenges 14C from peripheral zones of the path; in the depleted areas, 14C dates are older - bimodal. This also affects luminescence dates by bleaching grains, but with a characteristic power spectral density distribution, where vectors show phase displacement by a single constant. C/N ratios were unusually high in the original 14C samples, and showing strong variance between other organics within the stratum. Lapedo child is probably older by ~1.37-1.90, not 1.174 (the strong mode for the new calibrated dates, r^2 and r^3, a proposed bootstrap adjustment for 14C scavenging effects).

1.174 is a metric constant ubiquitous in lightning struck materials and fulgurites, an automorphic totality, defining length, pore, and material (elemental/isotopic/monodromic bulk combinatoric atomic:mass) spectral indices. 

The dates, once adjusted for the effects of lightning (obvious when performing dimensional analysis on the sample data) - even without accounting for old carbon reservoir effects - using a bootstrap that I developed from work with fulgurites, correspond to the earliest Gravettian/late Aurignacian or earlier (e.g. >33,000 BP, more precisely 37318-33828 YBP). This is more in line with genetic frequencies of neanderthalensis alleles found in modern Western European populations given genetic mixing from partial replacements during the Badegoulian, early Mesolithic, and early Neolithic. Here is a table I just made showing the recurrence of particular constants within the distributions of dates and their ordinary correction from recent radiocarbon reservoir calibration curve. We must assess, given the context was the sidewall of a calcareous rock shelter within a sub-plateau canyon, whether this effect would be non-trivial. The location of the find has been highly prone to lightning strikes.

 

Lightning error to radiogenic:stable carbon overprinted onto organics that are likely to be affected by some degree of an old carbon effect shows, nevertheless, a kind of reciprocity between these mechanisms could be actual, and lightning strikes into springs that sample ancient water may produce a synthetic date that is symmetric with ambient 14C.

Notice the maximum date obtained from the correction is equal to the absolute limit of radiocarbon dating chronology, assumed to be the amount of time all detectable 14C would have effectively decayed.

Also, the minimum and maximum ages I produced from the largest power of the scaling value are identical to a polar excursion event at ~42,000 BP, and the beginning of the Gravettian, ~33,000 BP. The entire range matches the most significant climatic shifts and sea level changes through the Last Glacial Maximum.