The relative effects of core surface morphology on flake shape and other attributes

It is long been thought that many flake attributes, including both size and shape, are largely due to the morphology of a core’s flaking surface, yet this has never been tested under strictly controlled conditions. Using molded glass cores with surface morphologies that highly resemble prehistoric ones, this experiment demonstrates that while core surface morphology does exhibit some influence on flake size and shape, a high degree of variation in flakes produced with the same core surface morphology shows that the effects of other independent variables, such as exterior platform angle and platform depth, have an even stronger effect. A major implication of these results is that current approaches to reconstruct prehistoric knapping strategies are overlooking significant sources of variation.     

Lithic refitting and movement connections: the NW area of level TD10-1 at the Gran Dolina site (Sierra de Atapuerca,Burgos, Spain)

The first lithic refit studies were carried out at the end of 19th century, but the method was not considered an area of real interest to archaeology until quite recently. Today, lithic refitting is applied in a multitude of areas of enquiry including lithic technology, intra-site and inter-site spatial distribution, archaeostratigraphy and formation processes. In this paper, we present a refit study of the lithic materials recovered in the base of the NW sector of level TD10 at the site of Gran Dolina (Sierra de Atapuerca, Spain). We aim to provide information about spatial distribution through identifying activity areas and the internal connections between those areas. Our work resulted in various refits whose connections reveal the movements of the pieces and/or knappers that once occupied the site. Our results also show the importance of studying the set of materials as a whole and the bias involved in analyzing only a small sample. The refits, connections and directions of movement allow us to infer areas in which an activity took place, but these results must be confirmed in future works covering the entire lithic assemblage of TD10.     

Vein quartz in lithic traditions: an analysis based on experimental archaeology

Worldwide, vein quartz was a commonly used raw material for stone tools but this material has proved difficult for archaeologists to analyse because many quartz assemblages appear to be comprised of amorphous pieces, not easily recognised as humanly modified or forming ‘tools’. This paper discusses the analysis of the debitage – focusing on the debitage fragmentation rate, the debitage, break, and fragment types, and the quantitative analysis of the complete flakes – resulting from experimental knapping of quartz, which formed part of a project which investigated the use of quartz in Irish prehistoric lithic traditions. The results have highlighted the complexity involved in analysing quartz assemblages, and the significant differences between the debitage products of quartz and chert knapping assemblages. While bipolar knapping is generally easy to differentiate from direct percussion, it is harder to differentiate between soft and hard hammer percussion.     

Unpacking climate services: Knowledge politics,beneficent humanitarianism and the realpolitik of risk management in China

In the last four decades, climate services (CS) have moved from being limited forecasting tools in their predictive capacity to becoming involved in the shaping of risk assessment instruments with global reach affected to enhance adaptation to climate change. Yet, they have been relatively overlooked by human geographers and critical risk theorists, whose interests have been to document the political processes involved in shaping climate change and the global scientific enterprise it has generated. By looking at the ways in which CS have been developed and exported to countries deemed as climate-vulnerable, the paper sheds light on two simultaneous kinds of knowledge politics that are occurring at the interstices of global human security aspirations and the realpolitik of local practices. The first emerges from the ways in which CS political relevance has been secured by climate scientists in the midst of grand developmentalist and humanitarian ambitions, what we have called beneficent knowledge politics. The second comes from the nitty-gritty of risk management practices in countries to which CS are exported, in this case China, and highlights how a myriad of knowledge and sensitivities involved in shaping risk and science have been overlooked by the superseding ideals underpinning the production of CS and their application to wider climate adaptation agenda. By doing so, the paper contributes to the geographies of risk and emergencies as well as to the geographies of science by enhancing our understanding of the knowledge politics at play in the development of and resistance to technocratic climate governance.     

Experimental protocols for the study of battered stone anvils from Olduvai Gorge (Tanzania)

Percussive activities are highly relevant in the economy of modern hunter-gatherer societies and other primates, and are likely to have been equally important during the Palaeolithic. Despite the potential relevance of percussive activities in the Early Stone Age, attempts to study battered artefacts are still rare. In order to establish protocols of analysis of battered tools, this paper pursues an interdisciplinary approach combining techno-typological, refit, use-wear and GIS studies of experimental anvils from Olduvai Gorge (Tanzania). The main aim is to classify types of damage on battered artefacts according to the percussive task performed, and hence identify patterns that can be used to interpret the Oldowan and Acheulean evidence. Our results indicate that abrasion marks on anvil surfaces are typical of nut cracking, while bone breaking leaves characteristic scars and abrasion marks on the edges of anvils. Pounding of soft materials such as meat and plants also causes battering of anvils, producing morphological and spatial patterns that can be discerned from the heavy breakage of anvils during bipolar flaking. By integrating macroscopic, microscopic and spatial analyses of experimental stone tools, this paper contributes to create a referential framework in which Early Stone Age battered artefacts can be interpreted.     

Establishing discovery probabilities of lithic artefacts in Palaeolithic and Mesolithic sites with core sampling

This paper reports the results of a study into the effectiveness of core sampling for discovering Palaeolithic and Mesolithic hunter-gatherer sites in the Netherlands and northwestern Belgium. Earlier work established optimal sampling strategies for use in archaeological heritage management survey in the Netherlands. However, the statistical model used for this was based on a limited amount of data on the distribution of lithic artefacts in Palaeolithic and Mesolithic sites. For the current study we have analyzed the distribution of artefacts in a selected number of excavated sites, and estimated discovery probabilities of these sites through simulation. The simulation results indicate that discovery probabilities are lower than expected due to the effect of clustering of finds. Furthermore, the density of flints in Palaeolithic and Mesolithic sites is generally lower than the estimates that were used for setting up the optimal sampling strategies, and a substantial number of sites is very small. This means that, in order to discover Palaeolithic and Mesolithic sites with sufficient reliability, we will have to apply more intensive survey strategies than have been recommended up to now.     

Prepared core reduction at the site of Kudu Koppie in northern South Africa: temporal patterns across the Earlier and Middle Stone Age boundary

Kudu Koppie is a stratified late Earlier Stone Age and Middle Stone Age archaeological site located in the northern Limpopo Province of South Africa. The prepared core reduction strategies are described and temporal trends across the ESA–MSA boundary are presented. The prepared cores and endproducts of Kudu Koppie suggest that both the late ESA and MSA toolmakers employed the Levallois Volumetric Concept, but they often exploited a nodule's natural convexities and form. The MSA toolmakers used a greater variety of prepared core methods and more intensively exploited cryptocrystalline and microcrystalline nodules, the scarcity of which may have resulted in a more “formalized” application of the Levallois Volumetric Concept. These observations are considered within the context of human behavioural evolution.     

The Fluted Point tradition and the Arctic Small Tool tradition: What’s the connection?

This paper presents a comparative study of two colonizing populations in the Americas: the Fluted Point tradition (FPt) and the early Arctic Small Tool tradition (ASTt) with the aim of understanding the role of lithic technologies in the colonization process. The FPt and ASTt are seen as residentially mobile groups with comparatively little reliance on food storage and minimal transportation aids. At the same time they also produced very similar flaked stone technologies that differed greatly from all later groups, being characterized by standardized core reduction, excellence in manufacture, production of a wide range of often hafted tools, use of the highest quality toolstones and a reliance on flaked stone, as opposed to ground stone, tools. The main advantage of these technologies is that they are not only flexible but can be rapidly produced. It is suggested that the key variable accounting for these choices is the lack of efficient transportation aids. In colonizing situations, the limited transport capabilities force populations to: (a) rely more on less predictable search and encounter methods of resource procurement and in turn, residential mobility to position people with regard to resources and (b) place a high premium on efficient time allocation to meet the excessive demands needed to maintain social contacts and mating networks amongst very low density populations.     

Laser scanning confocal microscopy: a potential technique for the study of lithic microwear

The key problem restricting lithic microwear analysis is the lack of quantitative analysis to support qualitative assessments of different wear traces. This paper presents the reflective laser scanning confocal microscope (LSCM) as a new technique for the study of lithic microwear that has the potential to resolve this problem. Firstly, an example is presented that shows how the LSCM compares with conventional reflected light microscopy and scanning electron microscopy. This shows that images, rivalling that of the SEM, can be produced in similar timescales to conventional photomicrography and with no need for casting or sample preparation. The LSCM is also used to measure surface roughness of use-wear produced from working hide (dry, fresh and greasy), woodworking and antler working. This analysis demonstrates clear differences between the different wear polishes and the potential of the LSCM as a quantitative approach in lithic microwear research.     

Dendrochronological analysis of bowed and plucked instruments from the San Pietro a Majella Conservatory,Naples

The Museo Storico Musicale of the San Pietro a Majella Conservatory of Music in Naples owns a collection of over 200 musical instruments of considerable historical importance. Within the collection, 30 bowed and plucked instruments representative of the Neapolitan violin-making tradition were analysed dendrochronologically to date them, estimate the provenance of the wood and investigate the instruments’ construction characteristics. The values of the statistical cross-dating tests were generally high and allowed 26 instruments to be dated. In all but one case, the dates were consistent with those of the catalogue. From the perspective of wood selection, we noted an unusual use of very old spruce wood, well beyond simple seasoning. The construction technique of the soundboard and other characteristics show good similarities with instruments analysed in other Italian collections. Thus, even in Neapolitan instruments, the growth rings are smaller in small instruments and larger in cellos or double basses. In conclusion, the Neapolitan violin-making school has shown great care in the choice of wood, most coming from regions as far away as Germany or Switzerland, thus confirming the existence of an active large-scale trade in wood for the production of musical instruments.