To ensure proper context control for archaeological samples, it is crucial that excavations determine and,where possible, follow the natural stratigraphic subdivisions in a sedimentary sequence.... Show moreTo ensure proper context control for archaeological samples, it is crucial that excavations determine and,where possible, follow the natural stratigraphic subdivisions in a sedimentary sequence. In cases with a single,unchanging source of sedimentary input, this may pose challenges. We present our strategies to deal with a>2 m deep homogeneous Pleistocene stratigraphy at Umhlatuzana rockshelter in South Africa, yieldingarchaeological remains from the Middle Stone Age. The site was originally excavated during a rescue project in 5–10 cm deep artificial spits for lack of visible stratigraphy. We revisited the shelter in 2018 and 2019. We integrate current standard practice such as piece-plotting archaeological materials with digital methods such as cluster analysis and geoarchaeological analyses (e.g., micromorphology, sedimentological analyses, geochemical analyses) to track the different sources of sedimentary input. We also develop an intensive sediment sampling strategy to illuminate geochemical variation within the sequence and postdepositional alterations affecting preservation conditions. We manage to reconstruct a natural stratigraphy of the site combining these methodologies, resulting in a radically changed understanding of the stratigraphy, depositional environment, and mechanisms of postdepositional disturbance. Show less
Schmid, V.C.; Sifogeorgaki, I.; Dusseldorp, G.L.; Chu, W. 2023
Raw materials are the lowest common denominator of any debitage analysis. And yet, the fracture mechanicsof eccentric raw materials are not always fully considered when performing inter-/intra... Show moreRaw materials are the lowest common denominator of any debitage analysis. And yet, the fracture mechanicsof eccentric raw materials are not always fully considered when performing inter-/intra-assemblagecomparisons. The fracture mechanics as one constraint to be respected by the knappers greatly influencearchaeological recovery of debitage products in different raw materials. Thus, our methodologies forrecording debitage morphometrics may need to be adapted to specific raw materials. This means assemblagecomparison and correlation can only be attempted in a context-dependent manner. We review results ofassemblages in both chert and other raw materials from a range of locations across Old World to examinehow such assemblages have been recorded. In doing so, we highlight various pitfalls and limitations, andpropose that it is very important to provide the contextual information and describe exactly what methodwas used and give arguments, why it was used. Show less
We develop a study protocol to efficiently and accurately identify the raw material categories constituting the lithic assemblages at Umhlatuzana rockshelter, South Africa. We combine visual and... Show moreWe develop a study protocol to efficiently and accurately identify the raw material categories constituting the lithic assemblages at Umhlatuzana rockshelter, South Africa. We combine visual and analytical methods to establish a raw material database and to provide a more accurate insight into raw material selection during the Pleistocene Middle and Later Stone Age occupational sequence of Umhlatuzana. The protocol combines petrological properties (as studied on micromorphological samples), elemental composition of the specimens (as measured with p-XRF) and visual characterization by lithic analysts. We tested the protocol by applying it to a sample of piece-plotted lithics from four spits across the stratigraphic sequence. We document the intensive use of sandstone accounting for 25% of the tested sample. We also report a larger importance of hornfels and lower proportion of quartz than was reported in previous analyses (Kaplan 1990). The combination of micromorphological and p-XRF analysis of the Umhlatuzana assemblages demonstrates that with only visual inspection, the variability of raw materials used may be misinterpreted. With accurate raw material datasets, we are better equipped to answer techno-economic questions of the southern African Stone Age. Show less
Svante Pääbo won in 2022 de Nobelprijs voor Fysiologie of Geneeskunde voor zijn werk op het gebied van ‘ancient DNA’ (aDNA). Hij is de grondlegger van het onderzoek naar DNA uit het verleden,... Show moreSvante Pääbo won in 2022 de Nobelprijs voor Fysiologie of Geneeskunde voor zijn werk op het gebied van ‘ancient DNA’ (aDNA). Hij is de grondlegger van het onderzoek naar DNA uit het verleden, eerst met heel jonge resten, zoals een Egyptische mummie, maar sinds de jaren ’90 van de twintigste eeuw legt hij zich toe op resten van grotere ouderdom, zoals het DNA van Neanderthalers. Zijn werk zorgt voor een ware revolutie in onze kennis van het verleden. Door de analyse van aDNA blijkt dat verschillende mensensoorten regelmatig genetisch materiaal uitwisselden. Met behulp van aDNA is een nieuwe mensen- soort ontdekt, de Denisovanen, waarvan anatomisch alleen maar niet informatieve botten bekend zijn. Bovenal geeft paleogenetische analyse een beeld van het sociale leven in het verleden. Zo kun je niet alleen bestuderen in hoeverre mensen in megalieten zoals hunebedden familie van elkaar waren, maar ook hoe de sociale organisatie van Neanderthalers in elkaar stak. Door archeologische en genetische gegevens te combineren is ons begrip van de sociale geschiedenis van Homo sapiens en van andere mensensoorten ongekend veel rijker geworden. Show less
Een onderkaak die in 1887 in Spanje is gevonden, is niet van een neanderthaler maar hoogstwaarschijnlijk van een homo sapiens. Het is een nieuw puzzelstukje in de geschiedenis van de mens. En die... Show moreEen onderkaak die in 1887 in Spanje is gevonden, is niet van een neanderthaler maar hoogstwaarschijnlijk van een homo sapiens. Het is een nieuw puzzelstukje in de geschiedenis van de mens. En die wordt door moderne DNA-technieken ook steeds duidelijker. Show less
Analysis of Late Pleistocene fauna exploitation (~130,000–12,000 years ago) in southern Africa is of global academic relevance. Faunal analyses from southern African sites have led to the... Show moreAnalysis of Late Pleistocene fauna exploitation (~130,000–12,000 years ago) in southern Africa is of global academic relevance. Faunal analyses from southern African sites have led to the development of influential hypotheses on the evolution of modern human hunting methods and subsistence economies. In the 1970s and 1980s, analysis of faunal remains from the Middle Stone Age site Klasies River informed the hypothesis that Middle Stone Age humans were less effective hunters than ethnographically documented huntergatherers. This was based on the underrepresentation of dangerous prey species in the bone assemblages. The development of detailed taphonomic research in the 1990s and 2000s demonstrated that the accumulation of faunal assemblages was the result of complex processes involving both human and nonhuman agents. These studies helped establish that Middle Stone Age hunters were as capable as those in ethnographically documented societies. Since then, important progress has been made in the identification of the weapons systems that were used to hunt animals. Analyses of lithic implements indicate bow-and-arrow use in southern Africa going back to at least 65,000 years ago. Animal exploitation strategies do change over time. Hunting strategies probably focused on large antelope during the Middle Pleistocene, and the importance of smaller animals increased This change was likely caused by a shift in prey populations that stemmed from a combination of environmental change and perhaps human population pressure. Late Pleistocene archaeological sites show increasing evidence for intensification; that is, an increase in the amount of food extracted from the environment by more thorough processing of prey, exploitation of new prey types, and development of new exploitation strategies. This pattern is usually linked to animal overexploitation and may be a result of human population expansion or environmental change if decreasing productivity limits the supply of animal prey. Notable examples of this are shellfish middens at coastal sites, the abundance of tortoises, and the presence of large numbers of small mammals that were likely snared instead of pursued. Show less
Van collega’s hoor ik wel eens dat archeologie zo’n witte discipline is omdat we ‘ons’ verleden opgraven. Dat zou voor mensen wier voorouders recent naar Nederland emigreerden oninteressant zijn....Show moreVan collega’s hoor ik wel eens dat archeologie zo’n witte discipline is omdat we ‘ons’ verleden opgraven. Dat zou voor mensen wier voorouders recent naar Nederland emigreerden oninteressant zijn. Maar volgens mij gaan dit soort verhalen over de prehistorie niet helemaal op, en laten we belangrijke mogelijkheden liggen om juist onze gezamenlijke oorsprong te bestuderen.Show less
Here we evaluate the hypothesis that during cold climatic phases, people and resources became increasingly packed along highland Lesotho's riverine corridors as the viability of palatable... Show moreHere we evaluate the hypothesis that during cold climatic phases, people and resources became increasingly packed along highland Lesotho's riverine corridors as the viability of palatable grasslands for large mammal hunting on the upland plateaus declined. These intensification efforts resulted in increased reliance on lower-ranked aquatic (fish) resources with knock-on effects for lithic technological organization. We compare data on the relative contributing of fishing to the diets of highland hunter-gatherers at Sehonghong rockshelter with a faunal proxy widely argued to correlate with subsistence intensification (faunal assemblage evenness). In addition, we compare these data with two measures of lithic technological intensification (cutting edge production and core reduction intensity) to test whether diet intensification tracks technological intensification. We show that at Sehonghong, aquatic resource exploitation is not always correlated with faunal assemblage evenness. We find that some layers (i.e. RF) show spikes in aquatic resource use irrespective of changes in mammal hunting. Other layers (i.e. layer RBL/CLBRF) were intensively occupied, but they do not have many fish. Our data also demonstrate that aquatic resource use is not associated with lithic technological intensification. These results suggest that while aquatic resource exploitation was a ‘fallback’ option for some of Lesotho's highland hunter-gatherers, there is considerable variability. Our data show that multiple intensification dimensions were variably combined through the Late Pleistocene at Sehonghong as they were elsewhere in southern Africa. Show less
Dusseldorp, G.L.; Raczynski-Henk, Y.; Amkreutz, L. 2022
De afgelopen 20 jaar wordt steeds duidelijker hoe de eerste Europeanen eruitzagen en dat die mensen waarschijnlijk al vanaf 800.000 jaar geleden sporadisch in onze streken komen. Uitgerekend in... Show moreDe afgelopen 20 jaar wordt steeds duidelijker hoe de eerste Europeanen eruitzagen en dat die mensen waarschijnlijk al vanaf 800.000 jaar geleden sporadisch in onze streken komen. Uitgerekend in Nederland is een vindplaats opgegraven die een uniek kijkje in de wereld van die vroegste Europeanen geeft. Die vindplaats, Maastricht-Belvédère, staat internationaal in alle handboeken, maar in Nederland kent niemand haar. Je kan er bijna tot op de seconde nauwkeurig een episode reconstrueren in het leven van mensen die hier 250.000 jaar geleden leefden. Een beeld van een voor ons vrijwel onvoorstelbare manier van leven verschijnt, waarin geleidelijk een aantal prominente menselijke kenmerken verschijnen, zoals complexe planning en de ontwikkeling van verfijnde technologische snufjes. Daaruit wordt duidelijk dat die hele vroege ‘Nederlanders’ alleen vanuit een pan-Europees perspectief begrepen kunnen worden. Show less
Lombard, M.; Bradfield, J.; Caruana, M.V.; Makhubela, T.V.; Dusseldorp, G.L.; Kramers, J.D.; Wurz, S. 2022
A decade ago, we summarised the South African and Lesotho Stone Age technocomplex sequence as a heuristic exercise, anchored in 242 dated assemblages (Lombard et al. 2012). Following Clarke (1968),... Show moreA decade ago, we summarised the South African and Lesotho Stone Age technocomplex sequence as a heuristic exercise, anchored in 242 dated assemblages (Lombard et al. 2012). Following Clarke (1968), Sampson (1974) and Deacon (1980), we defined a technocomplex as a group of industries characterised by assemblages that have many, but not all, properties in common. Spatiotemporal changes and shifts in artefact design and frequencies owing to material use/availability and socio-economic factors are built into the framework. The accompanying dataset was intended to serve as a useful resource to both students and professionals, and to fuel research and debate. Show less
Umhlatuzana is an important archaeological site for the study of the Middle and Pleistocene Later Stone Age in South Africa with a largely continuous occupation sequence spanning MIS 4-2 (~70,000 -... Show moreUmhlatuzana is an important archaeological site for the study of the Middle and Pleistocene Later Stone Age in South Africa with a largely continuous occupation sequence spanning MIS 4-2 (~70,000 - 10,000 BP). The main technocomplexes represented are Still Bay, Howiesons Poort, Sibudan, final MSA and Robberg (from old to young). Changing selection of raw materials is an important issue in the study of the Middle-to-Later Stone Age transition that appears characterised by a shift in raw material use in addition to a technological organisation. Umhlatuzana was first excavated in 1975 by Jonathan Kaplan who suggested that the lithic assemblage of the Pleistocene deposits consisted mainly of quartz (61%), hornfels (37.6%), and quartzite (1.4%) (Kaplan 1990). Renewed excavations at the site were conducted during 2018 and 2019. This campaign aims to clarify the site’s formation processes employing micromorphological analysis and other techniques (Reidsma et al. 2021, Sifogeorgaki et al. 2020). Micromorphology uses thin sections of undisturbed sediment samples for microscopic studies. The sections allow a petrological inspection of rock fragments embedded in the deposits. Rather unexpectedly, the Umhlatuzana thin sections yield different raw material determinations than Kaplan (1990). While quartz and hornfels are present (around 23% and 25% respectively), they represent a much less sizable proportion than previously reported. Instead, the most prominent raw material observed is a quartz arenite sandstone (42%). Quartzite fragments were not detected.We therefore initiated an in-depth mineralogical and elemental classification of the raw materials. We distinguish 6 raw material types based on the thin section analysis: sandstone, quartz, hornfels, dolerite, chert and diorite. We then determined the elemental composition of the raw material types of the micromorphology samples using p-XRF. Additionally, p-XRF analysis was conducted on c. 100 specimens from the 2018-2019 excavation lithic collection. This allowed us to determine elemental characteristics of the raw materials used during the Pleistocene occupation of the site. Subsequently, p-XRF analysis was systematically performed on a larger sample set of lithics from the site in order to correctly determine their raw material type. The combination of micromorphological and p-XRF analysis of the Umhlatuzana assemblages demonstrates that if only visual inspection is done, the variability of raw materials used may be misinterpreted and the relative frequency of different rock types in an assembly may be over- or underestimated. Future work will aim at re-visiting the raw material categorization of artefacts excavated during the 1975 excavations. Show less
Umhlatuzana rockshelter is an archaeological site with an occupational record covering the Middle Stone Age, Later Stone Age, and Iron Age. The presence of both Middle and Later Stone Age... Show moreUmhlatuzana rockshelter is an archaeological site with an occupational record covering the Middle Stone Age, Later Stone Age, and Iron Age. The presence of both Middle and Later Stone Age assemblages makes Umhlatuzana the ideal location for the study of the MSA–LSA transition (20–40 ka) in southern Africa. This transitional period is characterized by important modifications in stone tool technology, from prepared core technology to a toolkit based on microlith production. These changes are argued to have occurred in response to changes in climate and environment leading up to the Last Glacial Maximum. The deposits bearing the transitional assemblages at Umhlatuzana rockshelter appear homogeneous with no visible stratigraphic boundaries. This study integrates geoarchaeological techniques in order to explore fine-resolution geochemical differentiations of the sediments that are macroscopically invisible, and that will provide insight into (post-)depositional processes over time. Samples were systematically retrieved from the western profile of the site following a grid-based sampling strategy and analyzed for pH, elemental composition (XRF), and Magnetic Susceptibility. Additionally, the results were integrated with preliminary micromorphological observations. Our study reveals a steady, gradual change in the geochemistry of the deposits throughout the Pleistocene, related to a combination of environmental change and occupation intensity. We suggest that the part of the sequence reported to bear Middle to Later Stone Age transitional industries is characterized by wetter environmental conditions compared to the underlying deposits. Additionally, we support results from previous studies that excluded large scale post-depositional movement of the sedimentary sequence. Our study offers a successful multi-proxy approach to systematically sample and study archaeological deposits at the macro and micro scale, integrating a variety of geoarchaeological techniques. The approach provides insight into the depositional and post-depositional history of the site, and allows for questions of stratigraphic integrity, anthropogenic input, preservation, and environmental change to be addressed. Show less
Umhlatuzana rockshelter is an archaeological site with an occupational record covering the Middle Stone Age, Later Stone Age, and Iron Age. The presence of both Middle and Later Stone Age... Show moreUmhlatuzana rockshelter is an archaeological site with an occupational record covering the Middle Stone Age, Later Stone Age, and Iron Age. The presence of both Middle and Later Stone Age assemblages makes Umhlatuzana the ideal location for the study of the MSA-LSA transition (20-40 ka) in southern Africa. This transitional period is characterized by important modifications in stone tool technology, from prepared core technology to a toolkit based on microlith production. These changes are argued to have occurred in response to changes in climate and environment leading up to the Last Glacial Maximum. The deposits bearing the transitional assemblages at Umhlatuzana rockshelter appear homogeneous with no visible stratigraphic boundaries. This study integrates geoarchaeological techniques in order to explore fine-resolution geochemical differentiations of the sediments that are macroscopically invisible, and that will provide insight into (post-)depositional processes over time. Samples were systematically retrieved from the western profile of the site following a grid-based sampling strategy and analyzed for pH, elemental composition (XRF), and Magnetic Susceptibility. Additionally, the results were integrated with preliminary micromorphological observations. Our study reveals a steady, gradual change in the geochemistry of the deposits throughout the Pleistocene, related to a combination of environmental change and occupation intensity. We suggest that the part of the sequence reported to bear Middle to Later Stone Age transitional industries is characterized by wetter environmental conditions compared to the underlying deposits. Additionally, we support results from previous studies that excluded large scale post-depositional movement of the sedimentary sequence. Our study offers a successful multi-proxy approach to systematically sample and study archaeological deposits at the macro and micro scale, integrating a variety of geoarchaeological techniques. The approach provides insight into the depositional and post-depositional history of the site, and allows for questions of stratigraphic integrity, anthropogenic input, preservation, and environmental change to be addressed. Show less
Umhlatuzana rockshelter is an archaeological site with an occupational record spanning the last ~70,000 years, covering the Middle Stone Age (MSA), Later Stone Age (LSA), and Iron Age. The deposits... Show moreUmhlatuzana rockshelter is an archaeological site with an occupational record spanning the last ~70,000 years, covering the Middle Stone Age (MSA), Later Stone Age (LSA), and Iron Age. The deposits bearing Pleistocene archaeological assemblages at Umhlatuzana rockshelter appear homogeneous with no macroscopically visible stratigraphic boundaries. This means the integrity of the archaeological assemblages is difficult to ascertain. Moreover, the sedimentation rate, taphonomic history, and the environmental context across the sequence are unclear. This study aims to resolve these issues by integrating different geoarchaeological techniques in order to explore fine-resolution geochemical differentiations of the sediments that are macroscopically invisible. Samples were systematically retrieved from the western profile of the site following a grid-based sampling strategy and analysed for pH, elemental composition (XRF), and Magnetic Susceptibility. These methods were chosen because they provide insight into ‘invisible’ geoarchaeological dynamics, related to sediment input (geogenic and anthropogenic), taphonomy, and environmental conditions. Additionally, the results were integrated with preliminary micromorphological observations. Our study reveals a gradual change in the geochemistry of the deposits throughout the Pleistocene, related to a combination of environmental change and occupation intensity. Furthermore, the gradual change within the geochemical data indicates that no large-scale sediment mixing took place (contrary to previous suggestions), while small-scale mixing related to bioturbation is visible in the micromorphological thin sections. Our study offers a successful multi-proxy approach to systematically sample and analyse archaeological deposits at the macro and micro scale, integrating a variety of geoarchaeological techniques. The approach provides insight into the depositional and postdepositional history of the site, and allows questions of stratigraphic integrity, anthropogenic input, preservation, and environmental change to be addressed. Show less
The causes of Neanderthal disappearance about 40,000 years ago remain highly contested. Over a dozen serious hypotheses are currently endorsed to explain this enigmatic event. Given the relatively... Show moreThe causes of Neanderthal disappearance about 40,000 years ago remain highly contested. Over a dozen serious hypotheses are currently endorsed to explain this enigmatic event. Given the relatively large number of contending explanations and the relatively large number of participants in the debate, it is unclear how strongly each contender is supported by the research community. What does the community actually believe about the demise of Neanderthals? To address this question, we conducted a survey among practicing palaeo-anthropologists (total number of respondents = 216). It appears that received wisdom is that demography was the principal cause of the demise of Neanderthals. In contrast, there is no received wisdom about the role that environmental factors and competition with modern humans played in the extinction process; the research community is deeply divided about these issues. Finally, we tested the hypothesis that palaeo-anthropologists’ stand in the debate co-varies with their socio-political views and attitudes. We found no evidence for such a correlation. Show less
Archeologisch onderzoek heeft soms wel wat weg van een murder mystery. Vrijwel de gehele prehistorie, op de laatste 40.000 jaar na, leefden er meerdere mensensoorten tegelijk. Ze leefden ook vaak... Show moreArcheologisch onderzoek heeft soms wel wat weg van een murder mystery. Vrijwel de gehele prehistorie, op de laatste 40.000 jaar na, leefden er meerdere mensensoorten tegelijk. Ze leefden ook vaak in hetzelfde gebied. En de stenen werktuigen die we opgraven, zien er meestal vrij eender uit. Hoe weten we nu wie die werktuigen maakten? Met mijn Zuid-Afrikaanse collega Marlize Lombard heb ik een onderzoek gepubliceerd waarin we een aanpak voor dit soort raadsels ontwikkelen. We doen dat aan de hand van een net ontdekte Zuid-Afrikaanse mensensoort. Show less
We develop a framework to differentiate the technological niches of co-existing hominin species by reviewing some theoretical biases influential in thinking about techno-behaviours of extinct... Show moreWe develop a framework to differentiate the technological niches of co-existing hominin species by reviewing some theoretical biases influential in thinking about techno-behaviours of extinct hominins, such as a teleological bias in discussing technological evolution. We suggest that some stone-tool classification systems underestimate technological variability, while overestimating the complexity of the behaviours most commonly represented. To model the likely technological niches of extinct populations, we combine ecological principles (i.e. competitive exclusion) with physical anthropology and the archaeological record. We test the framework by applying it to the co-existence of Homo naledi and Homo sapiens during the late Middle Pleistocene in southern Africa. Based on our analysis, we suggest that tool use was probably not an essential part of H. naledi’s niche, but that technology occasionally provided caloric benefits. In contrast, tool use was a structural part of the H. sapiens way of life. We provide reasoning for our interpretation that the latter population is associated with more sophisticated reduction strategies and the development of prepared core technology. The method also has applicability to cases such as the co-existence of different toolmakers during the Earlier Stone Age (ESA) in East Africa and the co-existence of Neanderthals and H. sapiens in Eurasia. Show less
