First molecular identification of a hafting adhesive in the Late Howiesons Poort at Diepkloof Rock Shelter (Western Cape,South Africa)

The hafting of tools using adhesive is one of the innovative features that characterizes the southern African Middle Stone Age. This technology has mainstream implications but remains insufficiently documented, largely due to unequal organic preservation and non-adapted analytical procedures. A notable exception is provided by the recent results from the site of Sibudu (Lombard, 2006; Wadley et al., 2009).     

Molecular evidence of bitumen in the Mousterian lithic assemblage of Hummal (Central Syria)

Evidence for bitumen use in Middle Palaeolithic sites is an exception in Pleistocene archaeology. This paper presents the discovery of three tar-bearing Levallois artefacts found in the Mousterian sequence in Hummal (Central Syria). The organic residues were submitted to geochemical study. Gas chromatography–mass spectrometry analyses of saturated and aromatic hydrocarbons and isotopic data show the presence of bitumen. The most likely location of natural asphalt provisioning is the Shaaf outcrop in the Bichri desert. The bitumen-bearing stone tools add further important data to the growing knowledge about bitumen processing in the Middle Palaeolithic spring sites of El Kowm. Identification of the provisioning place for natural asphalt enables a more precise assumption about the site's catchment area. From a technological point of view, the tar-bearing specimens provide information on the range of tool forms selected for hafting. Ballistic features arguably indicate that the pointed Levallois blanks seem to be spear points that were fitted to a wooden handle. In at least one case, this technical procedure was seemingly executed during a brief episode of occupation and replacement of worn out implements. This small, bracketed window of detailed insight into Mousterian technology is linked with the more general relationship between Levallois technology and stone tool hafting.     

云南祥云县检村石棺墓出土铜器的初步研究

为研究滇西地区青铜文化及相关铜器的制作技术,本研究采用扫描电镜和金相分析的方法,对云南祥云检村石棺墓出土的17件样品进行取样分析,结果表明祥云检村石棺墓出土的铜器以红铜为主,少数为Cu-Sn合金。这些器物的制作工艺主要是铸造、铸后冷加工等,制作工艺相对单一。3件编钟均为Cu-Sn合金,并且锡成分具有等比递增的现象。兵器矛经过鉴定后说明由于墓主身份的不同,随葬的矛也有实用器和随葬器两类。农具锸和工具锥和凿的鉴定表明有冷加工或使用过的痕迹,可能曾是实用器;而农具锄经鉴定并没有在农作中使用过,仅作为随葬品,进一步证明随葬铜锄是青铜时代滇西地区的一种丧葬习俗。分析表明,当时已根据不同器物的用途进行了不同的制作和加工。本研究结果对研究滇西青铜文化及金属技术有一定的意义。     

Middle Stone Age pièces esquillées from Sibudu Cave,South Africa: an initial micro-residue study

In this paper I present the results of a micro-residue study conducted on ten pièces esquillées (scaled pieces) from Sibudu Cave, South Africa. These artefacts are associated with the Howiesons Poort Industry (∼61.7 and ∼64.7 ka years ago at Sibudu), representing part of the later phase of the Middle Stone Age. Until now, it was unclear on what these pieces were used, and whether they were functional. Previous experimental use-wear work tentatively pointed towards bone processing. However, replication work on stone tool production technology suggests that pièces esquillées are merely the by/end-product of bipolar knapping. I used residue analysis on the Sibudu artefacts because this alternative method has the potential to identify if they were used, and if so, illuminate the specific materials the pieces were used on. Although the sample is small, all the pièces esquillées reveal a clear animal processing signal. There are some bone deposits on the utilised edges that may substantiate bone processing, or perhaps a bone hammer was used with them, but additional study, including Later Stone Age artefacts, is needed to assess the feasibility of these observations. It remains possible that the artefacts are core reduced pieces that were subsequently used as tools or simply knapped with a bone hammer.     

The Mousterian bone retouchers of Noisetier Cave: experimentation and identification of marks

Retouchers are fragments of bone used during the Paleolithic to strike stone flakes in order to transform them into retouched tools. Our experiments show that the mark produced on retouchers differs depending on whether they were used to strike flint or quartzite. Our results suggest that numerous pits, most often with an ovoid form, characterize the retouching of quartzite flakes. Most of the scores produced with this material have a sinuous morphology with rough interior faces. The areas with superposed traces have a pitted appearance. On the other hand, the retouching of flint flakes, produces pits that are most often triangular in form. Most of the scores have a rectilinear morphology with smooth interior faces and their superposition results in the formation of hatch marks. There is also a relationship between the characteristics of the mark and the relative state of freshness of the retouchers. The validity of the criteria identified was confirmed by a blind test. These diagnostic criteria were applied to archaeological retouchers from the Mousterian site of Noisetier Cave. The results obtained improve our knowledge of the technical behaviors of Neanderthals and allow us to address questions concerning their techno-economic implications.     

The colour of the facades in Siena’s historical centre: I. Glazings (calcium oxalate films s.s.) and other finishes on the stone materials of the Cathedral’s main facade

This paper focuses on the long-debated topic of the so-called calcium oxalate films: their origin and meaning but also their age and original appearance. The restoration of the main facade of the Siena Cathedral provided a unique opportunity to this end, thanks to the possibility of an extensive and detailed sampling and (as rarely happens) a sufficiently accurate historical knowledge of the construction vicissitudes. This work, mainly based on a polarising microscopy study (coupled with X-ray diffraction and SEM-EDS analyses) of over a thousand thin and ultra-thin sections of 400 microsamples, demonstrates that the current relicts of films are the result of alteration and decay of ancient treatments. In most cases, these were linseed oil-based glazings (the use of this substance is confirmed by historical documents) and pigments. Their role was essentially aesthetic; their use dates the beginning of the fourteenth century and continued at least until the eighteenth century.

The Still Bay points of Blombos Cave (South Africa)

We present the results of a technological and morphometric analysis of all the Still Bay points (n = 371) recovered from the 1993 to 2004 excavations at Blombos Cave. We have been able to reconstruct the manufacturing sequence of the bifacial points from initial shaping, by direct internal percussion, to finished morphology, by direct marginal percussion. Identifications of impact fractures and manufacturing breaks are based on comparisons with experimental and archaeological bifacial points of verified function, i.e. Paleoindian points from bison kill sites, replicates of Solutrean points mounted as spear-heads or arrowheads and shot into adult cattle, and experimental replication on local raw materials. Our analysis shows that: (a) only a minority of the points are finished forms, and that a large number of pieces are production failures, a situation known at bifacial point production sites of later ages; (b) morphometric and impact scar analyses should take into account this process and distinguish finished points from preforms and unfinished points; (c) there were at least three different kinds of raw material sources and that there is a marked increase in the frequencies of silcrete with respect to the M2 and M3 phases at Blombos; (d) three kinds of evidence prove that some of the points were hafted axially and used as spear tips; (e) production of bifacial points was a primary activity at the site but the hypothesis of intergroup exchange of Still Bay points cannot be sustained on the basis of present evidence; and (f) the Still Bay phase appears to initiate a trend to relatively rapid changes in specialized hunting weaponry and that this innovation is congruent with other innovations such as bone tools, shell beads and engraved ochre of the M1 and M2 phases at Blombos.     

Rocks of ages: propagation of hot-rock cookery in western North America

Cook-stone technology's Old-World roots were established by 30,000 B.P. and reappeared in the New World by 10,000 B.P., after millennia of direct-fire cooking. Hot-rock cookery, which is necessary for foods that require prolonged cooking, facilitated land-use intensification by affording greater utilization of nutrients in available foods on a given landscape. This technology gradually diversified during the early Holocene in western North America. By 4000 B.P. its initial intensification was underway; final intensification began by 2000 B.P. and typically peaked during the last 1500 years. Propagation of hot-rock cookery exemplifies pre-Columbian food crises and signals carbohydrate revolutions wherein more high-cost foods feed growing populations. As modeled, cook-stone griddles, earth ovens and steaming pits with rock heating elements are more costly facilities, insofar as fuel is used to heat rocks that, in turn, extend cooking time and temperature. More expensive still is stone boiling, given that fuel heats rocks that, in turn, heat water that cooks the food. Even more expensive in terms of energy expended is the manufacture of heating elements in the form of stone, ceramic, and metal cooking containers, all of which afford further evidence of land-use intensification.     

What Is a Hunter-Gatherer? Variation in the Archaeological Record of Eastern and Southern Africa

This article reviews the recent history of the archaeology of African hunter-gatherers, focusing on debates around the origins of modern humans and the destiny of hunter-gatherers with the advent of food production. African archaeologists are developing an increasing appreciation for the diversity of African hunter-gatherer societies. Understandings of hunter-gatherers based primarily on ethnography are being successfully challenged and extended.     

Production sequences of ostrich eggshell beads and settlement dynamics in the Geelbek Dunes of the Western Cape, South Africa

The archaeological record attests to the significance of ostrich eggs as a valuable resource for the people of the Later Stone Age. People over a broad geographic range used ostrich eggs to provide nourishment, storage and ornamentation. This paper focuses on the production, use and discard of ostrich eggshell beads recovered from open-air sites in the Geelbek Dunes of the Western Cape, South Africa. We present a comprehensive production chain for analyzing the manufacture of beads and introduce the concept of a heuristic production value for evaluating the degree of completion reflected by an assemblage. The pattern of fabrication and the distribution in size allow for a detailed analysis of the beads that points to specific behavioral patterns involved in their production. This analysis yields information about the duration and intensity of site use, as well as the individual members and cultural affinities of the groups who made the beads. We document the intentional use of fire to blacken the majority of the beads as an aesthetic choice. Combined with the results from AMS radiocarbon dating, the majority of the beads from Geelbek provide insight into the socio-economic identity of their manufacturers: small groups of hunter–gatherers who inhabited and used specific locations on the strandveld near Langebaan Lagoon.