Amino acid dating Gratis secchat
These inaccuracies in turn frustrate the development of archaeological chronologies and, in the Paleolithic, blur the dating of such key events as the dispersal of anatomically modern humans.
Here we describe a method to date hydroxyproline found in collagen (∼10% of collagen carbon) as a bone-specific biomarker that removes impurities, thereby improving dating accuracy and confidence.
This date is significantly older than all previous determinations.
There is independent evidence for the age of the burial, based on the excavated sequence at Kostenki. Rogachev (21, 22), the excavator, rejected any possibility for the burial to be attributed to cultural layer III, which is dated to ∼28.3–31.7 ka BP (19).
We have applied the technique to a set of important anatomically modern human bones from the Early and Mid-Upper Paleolithic of Russia.
Mixed-mode HPLC extraction of Hyp could prove very useful in dating bone with too little surviving collagen to be datable by the bulk collagen method.
The Kostenki 14 (Markina Gora) human skeleton excavated near Voronezh, Russia (Fig.