Application of GIS methods to retrieve orientation patterns from imagery; a case study from Beds I and II,Olduvai Gorge (Tanzania)

The role of natural processes in the formation of the Bed I and II sites at Olduvai Gorge (Tanzania) remains the subject of much debate, five decades after their original excavation. Preferred orientation of items is indicative of water disturbance, but compass bearings were not available in Mary Leakey's (1971) study. Using GIS methods, we have vectorized maps from 1960s excavations at Olduvai, and applied a range of statistical techniques to calculate items strike. The GIS analysis suggests strongly preferred orientation patterns in Bed I, and more heterogeneous angular histograms in Bed II. Two complementary lines of evidence support these results. Firstly, modelling of potential mapping errors provides a large interval of confidence for preferred orientation patterns. Second, the GIS study was extended to photographs of the earlier excavations and to maps from recent fieldwork at Olduvai; both yielded patterned arrangement of lithics and bones, and are consistent with results based on the analysis of the 1960s maps, i.e. a large number of the Bed I and II assemblages are preferentially oriented. These results highlight the potential of GIS applications to the analysis of imagery in Stone Age studies, and bear important implications for the understanding of the role of natural agents in site formation processes at Olduvai.     

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.     

Identification of a chrysocolla amulet in an Early Dynastic child mummy

Two pyriform formations were identified within a bundle of linen bandages wrapping a 15–18 months old Early Dynastic mummy. The upper one was taken out of the bandages and examined to ascertain its nature.     

Quantifying 3D Micro‐Surface Changes on Experimental Stones Used to Break Bones and Their Implications for the Analysis of Early Stone Age Pounding Tools

We present a new method to assess use‐wear formation processes of pounding tools used to break bones based on a combination of conventional microscopy, optical 3D surface measurements obtained with a confocal microscope and GIS analysis. The method involves 3D alignment and 3D surface change inspection techniques along with a surface morphometric characterization and 2D spatial pattern analysis, to measure the spatital distribution of significant changes in surface topography of pounding tools. Our results show that microscopic changes can be detected in the surfaces of hammers and anvils after bone breakage activities are performed. Use‐wear on the active elements (hammers made on basalt and quartzite) occurred over a larger area than was observed on the passive element (quartzite anvil), but the latter often exhibited deeper modifications. Tool surfaces generally developed smoother topography with increased use, but grain microfracture also appeared with greater frequency over time. This methodology offers highly accurate and statistically robust analyses of microscopic use‐wear traces that can be applied to the analysis of archaeological pounding tools.     

Immunological evidence of Plasmodium falciparum infection in an Egyptian child mummy from the Early Dynastic Period

A 15–18 months old child mummy, presently housed in Turin's Museum of Anthropology, was discovered in Gebelein (Upper Egypt) during excavations carried out by the Missione Archeologica Italiana, most likely in 1914.     

The Effect of Raw Material on the Identification of Knapping Skill: a Case Study from Olduvai Gorge,Tanzania

Journal of Archaeological Method and Theory - The identification of Oldowan hominin knapping skill levels has been a focus of numerous studies, with apparent variation in technical abilities...     

Geography of contestation: A study on the Yellow Vest movement and the rise of populism in France

The rise of a geography of discontent highlighted in recent studies points to a strong association between voting for populist parties and territories with socioeconomic difficulties. While discontent has primarily been addressed through the analysis of populist votes, we provide additional elements of analysis by comparing these populist votes to the Yellow Vest movement, and we distinguish the populist votes coming from the far-left party from those coming from the far-right party. Our results show that the Yellow Vest movement cannot be confused with French populist supporters and that their sensitivity to territorial dimensions also differs from that of the latter, especially in terms of access to public services. Their behavior highlights that the geography of protest takes multiple shapes and cannot be reduced to a simple opposition between urban and mostly rural or peripheral areas. This raises serious concerns about the dynamics of territories and the deleterious effects of metropolization and the closure of public services in peri-urban and rural territories that are not specific to France.     

How ‘creative’ is remembering? Culture-led regeneration and the politics of memory in Bogota,Colombia

ABSTRACT

Recently, Colombia’s post-conflict transition has experienced strong international attention. In Bogota, commemorative politics of the conflict insert themselves in complex processes of place branding: employing culture to rescale the city image from unsafe and violent to culturally vibrant. However, how to reckon with the country’s violent past in the culture-led renaissance of Bogota? Based on the author’s four-month of in-depth qualitative fieldwork on the main street Avenida 26 – at the center of both branding strategies and politics of memory – this paper shows the failure of institutional efforts to promote a brand of Bogota as a ‘City of Memory’. Socio-political divisions over the interpretations of the country’s past result in multi-scalar conflictive negotiations between politics and practices on the street: they reveal the tight link between memory, social justice, and urban segregation while denouncing the exclusionary visions of citizenship bared in political efforts to display memory as a territorial mark.