A new method for birch tar making with materials available in the Stone Age

The use of birch tar can be traced back to the European Middle Palaeolithic and is relevant for our understanding of the technical skills and cognitive abilities of Neanderthals. Due to the lack of archaeological evidence, it remains unknown what techniques were used for birch tar making. Efficiency was recently used as a proxy to determine the method most likely used in the Middle Palaeolithic. Todtenhaupt et al. have proposed a technique employing a groove-like structure that is comparable with the recently presented condensation method. The groove method resulted in higher tar yields compared to other experimental aceramic production processes. However, the implications for Palaeolithic tar making remain unclear because some of the materials used in the experiment were not available then (polished granite slabs). To approach this problem, we replicated the groove with river cobbles and, in a second experiment with flint fragments, to evaluate whether similar results can be obtained. We were successful in producing birch tar in multiple runs with the cobble- and flint-grooves, which, in addition, proved to be more efficient than the condensation method in terms of tar yield per bark input. Our experimental study provides an additional possibility to make prehistoric birch tar.

ANÁLISIS LOCACIONAL DEL YACIMIENTO PALEOLÍTICO DE COVA EIRÓS (TRIACASTELA, LUGO)

In this paper, we deal with the locational analysis of the Cova Eirós site (Triacastela, Lugo), occupied from the Middle Palaeolithic to the present. From GIS and statistics, we intend to approach those environmental factors that define its importance as a place of occupation over time and on a recurring basis. Once we have analysed the variables that characterize the site’s patterns of use, we have verified that Cova Eirós is an important, prominent and strategic point. The place is very close to the potential transit routes and has great visibility. It is also protected and set on a steep slope. Moreover, the site has hunting resources and raw materials sources nearby. So it is a settlement that presents ideal living conditions for hunter-gatherer groups.

Undo Caves Multi-staged Karstic System and Temporary Camp of the Neanderthal Hunters

In Georgia, a strong foundation for scientific study of this period was developed in 1930-ies. Since then more than 500 Paleolithic sites were identified The frequency of paleolithic sites on the territory of Georgia was determined by geographic position of Georgia itself, as it is situated at the crossroads of Africa, Asia and Europe According to some archaeologists the archaeological evidence demonstrates the different local-cultural groups. Despite the small territory we have at least 5 local-cultural versions in the Middle Palaeolithic singled out with us four out of which are represented in the Rioni-Kvirila basin (Fig ). Most quantity of levallois industries were recovered in Imereti region (Western Georgia). 1. Drouchula,-Kudaro Local-cultural group.Mousterian assemblages characterized by blades and elongated points, as recovered in Drouchula, Tsona,Kudaro and other sites, resemble the “Tabun D-type” and Hummallian entities in the Levant.Unfortunatly, we have not the dates from this sites, but we assume that they are younger than Levantian “Tabun-D type”; at the same time, this industry has some similarities with the Northern-Caucasus Miqoqian industries , as well. 2. Tsutskhvati caves Local-cultural group. Multi-stage cave system characterized by the industry which resemble the Zagros region, but there are some differences-the non-Levalloias industry of Tsutskhvati is denticulated; 3. Tskaltsitela local-cultural group- Levalloiasian, denticulated industry (by M.Nioradze); 4. Tsopi Local-cultural.The industry of Tsopi site differs from above mentioned sites by the high quantity of the tools of Quina and Demi-Quina type; 5. Tskhinvali local-cultural group (according to v. Lubin)-Levalois, Unretouched industry. Another type of industry is represented I Ortvala Klde, Djieti open-air site etc.- Mousterian assemblages such as in Ortvala Klde demonstrates similarities with the Middle Paleolithic industries of Anatolia, the Zagros region-recurrent Levallois big number of the convergent tools. Most of the local-cultural groups and the sites are discovered in Western Georgia (Imereti Region) A first evidence of the Middle Paleolithic hunters temporary camp which, possibly has been used as place for some kind of rituals and where is represented a first evidence of the cave rock-art in Georgia has been determined in Rion-Kvirila basin as well. This is a cave-site named “Undo Cave”. Recently, we discovered some other cave-sites near Undo Cave. This fact gave a reason to consider Undo Cave as a one of the caves of Multi-staged cave system which doesn’t belong to any above mentioned groups.

Revisiting the Middle and Upper Palaeolithic archaeology of Gruta do Caldeirão (Tomar, Portugal)

Gruta do Caldeirão features a c. 6 m-thick archaeological stratification capped by Holocene layers ABC-D and Ea, which overlie layer Eb, a deposit of Magdalenian age that underwent significant disturbance, intrusion, and component mixing caused by funerary use of the cave during the Early Neolithic. Here, we provide an updated overview of the stratigraphy and archaeological content of the underlying Pleistocene succession, whose chronology we refine using radiocarbon and single-grain optically stimulated luminescence dating. We find a high degree of stratigraphic integrity. Dating anomalies exist in association with the succession’s two major discontinuities: between layer Eb and Upper Solutrean layer Fa, and between Early Upper Palaeolithic layer K and Middle Palaeolithic layer L. Mostly, the anomalies consist of older-than-expected radiocarbon ages and can be explained by bioturbation and palimpsest-forming sedimentation hiatuses. Combined with palaeoenvironmental inferences derived from magnetic susceptibility analyses, the dating shows that sedimentation rates varied in tandem with the oscillations in global climate revealed by the Greenland oxygen isotope record. A steep increase in sedimentation rate is observed through the Last Glacial Maximum, resulting in a c. 1.5 m-thick accumulation containing conspicuous remains of occupation by people of the Solutrean technocomplex, whose traditional subdivision is corroborated: the index fossils appear in the expected stratigraphic order; the diagnostics of the Protosolutrean and the Lower Solutrean predate 24,000 years ago; and the constraints on the Upper Solutrean place it after Greenland Interstadial 2.2. (23,220–23,340 years ago). Human usage of the site during the Early Upper and the Middle Palaeolithic is episodic and low-intensity: stone tools are few, and the faunal remains relate to carnivore activity. The Middle Palaeolithic is found to persist beyond 39,000 years ago, at least three millennia longer than in the Franco-Cantabrian region. This conclusion is upheld by Bayesian modelling and stands even if the radiocarbon ages for the Middle Palaeolithic levels are removed from consideration (on account of observed inversions and the method’s potential for underestimation when used close to its limit of applicability). A number of localities in Spain and Portugal reveal a similar persistence pattern. The key evidence comes from high-resolution fluviatile contexts spared by the site formation issues that our study of Caldeirão brings to light—palimpsest formation, post-depositional disturbance, and erosion. These processes. are ubiquitous in the cave and rock-shelter sites of Iberia, reflecting the impact on karst archives of the variation in climate and environments that occurred through the Upper Pleistocene, and especially at two key points in time: between 37,000 and 42,000 years ago, and after the Last Glacial Maximum. Such empirical difficulties go a long way towards explaining the controversies surrounding the associated cultural transitions: from the Middle to the Upper Palaeolithic, and from the Solutrean to the Magdalenian. Alongside potential dating error caused by incomplete decontamination, proper consideration of sample association issues is required if we are ever to fully understand what happened with the human settlement of Iberia during these critical intervals, and especially so with regards to the fate of Iberia’s last Neandertal populations.