For example, our recent work shows that sulfidogenesis may promote arsenic mobilization by triggering ferric (hydr)oxide dissolution and the formation of iron sulfide minerals, with a weak sorptive affinity for arsenic.This is a rapidly expanding area of research within Southern Cross Geo Science, supported by a 5-year Australian Research Council Project.The levels from which the remains originate have been dated to an important time period between 30,000 and 34,000 2005) dating to ca. P., the remaining human fossils securely associated with the Aurignacian are, for the most part, undiagnostic and/or poorly dated (see Churchill, Smith 2000 for a recent review).This has led some authors to conclude that we have little basis for assuming that anatomically modern humans were the makers of the Aurignacian (. For this reason, it is especially important to review, and to analyze carefully the dental characteristics of the specimens from Brassempouy, a carefully excavated and well-dated site indisputably early Aurignacian, to see what light they can shed on the taxonomic affiliation of the hominins they represent. We also agree that analyses based on complete dental specimens may provide the most powerful taxonomic assessment.Dating of the sulphide-alteration (pyrite) and phyllic-alteration (muscovite) stages of the ore system utilized the Re-Os and Ar methods, respectively.
Delporte (1981-1996) from the site of Brassempouy (Landes).As part of this study additional geochronological data were obtained for detrital zircon (U-Pb age of 1634 ± 11.2 Ma) from the host sedimentary rocks, as well as timing of thermal events at ca. 370–380 Ma, 350 Ma and Ar and chemical Th-Pb dating of host rocks and monazite. In our view and based on the available evidence, the early Aurignacian dental remains from Brassempouy are unambiguously modern in their anatomy.They indeed provide further evidence that the makers of the ancient Aurignacian were early anatomically modern Europeans.