Hier zumindest mal das Abstract des Artikels aus PNAS:
Revised age of late Neanderthal occupation and the end of the Middle Paleolithic in the northern Caucasus
1. Ron Pinhasia,1,
2. Thomas F. G. Highamb,1,
3. Liubov V. Golovanovac,1, and
4. Vladimir B. Doronichevc,1
+ Author Affiliations
1.
aDepartment of Archaeology, University College Cork, Cork, Ireland;
2.
bOxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford OX1 3QY, United Kingdom; and
3.
cLaboratory of Prehistory, St. Petersburg 190034, Russia
1.
Edited by Richard G. Klein, Stanford University, Stanford, CA, and approved March 31, 2011 (received for review December 17, 2010)
Abstract
Advances in direct radiocarbon dating of Neanderthal and anatomically modern human (AMH) fossils and the development of archaeostratigraphic chronologies now allow refined regional models for Neanderthal–AMH coexistence. In addition, they allow us to explore the issue of late Neanderthal survival in regions of Western Eurasia located within early routes of AMH expansion such as the Caucasus. Here we report the direct radiocarbon (14C) dating of a late Neanderthal specimen from a Late Middle Paleolithic (LMP) layer in Mezmaiskaya Cave, northern Caucasus. Additionally, we provide a more accurate chronology for the timing of Neanderthal extinction in the region through a robust series of 16 ultrafiltered bone collagen radiocarbon dates from LMP layers and using Bayesian modeling to produce a boundary probability distribution function corresponding to the end of the LMP at Mezmaiskaya. The direct date of the fossil (39,700 ± 1,100 14C BP) is in good agreement with the probability distribution function, indicating at a high level of probability that Neanderthals did not survive at Mezmaiskaya Cave after 39 ka cal BP ("calendrical" age in kiloannum before present, based on IntCal09 calibration curve). This challenges previous claims for late Neanderthal survival in the northern Caucasus. We see striking and largely synchronous chronometric similarities between the Bayesian age modeling for the end of the LMP at Mezmaiskaya and chronometric data from Ortvale Klde for the end of the LMP in the southern Caucasus. Our results confirm the lack of reliably dated Neanderthal fossils younger than ∼40 ka cal BP in any other region of Western Eurasia, including the Caucasus.
Wenn das so ist, dass wir nach 39 ka cal BP keine HSN mehr haben, sollte man nach den selben Verfahren mal klären, wie verlässlich die ersten HSS datiert sind. Der älteste HSS in Eurasia ist Pescera cu Oase, der von Trinkaus et al 2003 auf 40.500 kal BP datiert ist... aber wie verlässlich?
Die Frage ist halt, wie man in dem Zeitabschnitt vor 32 ka BP überhaupt vernünftig 14C-datieren und insbesondere kalibrieren kann. Habe leider im Augenblick keine Zeit zu schauen, wieviel Stützpunkte IntCal09 in diesem Zeitraum inzwischen hat.
Arne