Microlith Production Research Articles

Revisiting Duvensee 13: Additional Analyses of Lithic Artefacts and Site Contexts of a Small Dwelling at the Ancient Lake Duvensee, Germany

ABSTRACT The paper re-examines the Duvensee 13 site at Lake Duvensee, Germany, dating from 9900 to 8600 calBP, the latest in a series of well-known hazelnut roasting sites of a larger Mesolithic site complex. While the site has previously been studied, its lithic assemblage has not been fully analysed and published. This study presents this previously unstudied material, offering a comprehensive overview of its composition, metric information, and its spatial distribution. Lithic analysis revealed specialised production of pointed and triangular microliths. Additional elements of the assemblage (narrow blades, small cores) suggest microlith production as the primary goal. High-resolution spatial data revealed concentrations of microliths and microburins, pointing towards focussed areas of production. However, the overall assemblage is affected by a redistribution of artefacts through the reworking of the layers surrounding the hearth and repeated overlapping site occupations. Additional archaeological features suggest that in addition to hazelnut roasting, the site likely also accommodated dwelling, tool crafting, and game surveillance during off-harvest times.

Evolution of Microliths at Batadomba-lena, Sri Lanka

Unresolved questions about the nature and coherence of microlithic production in Sri Lanka underlay many discussions about the microlith tradition in this region as well as the origins of those technologies and norms. Previous studies have not examined whether there were changes over time in the form of the microliths themselves, and in this paper, we conduct a geometric morphometric (GM) assessment of the shape differences over time at the Batadomba-lena site in the Wet Zone of Sri Lanka, excavated by Deraniyagala and Perera. We show that there were complex shifts in microlith shapes, with diversification of forms over time. This finding challenges conventional typological depictions of sameness within microliths and introduces a new approach to studying the evolution of microlith form.

Homo sapiens lithic technology and microlithization in the South Asian rainforest at Kitulgala Beli-lena (c. 45 - 8,000 years ago).

Recent archaeological investigations in Sri Lanka have reported evidence for the exploitation and settlement of tropical rainforests by Homo sapiens since c. 48,000 BP. Information on technological approaches used by human populations in rainforest habitats is restricted to two cave sites, Batadomba-lena and Fa-Hien Lena. Here, we provide detailed study of the lithic assemblages of Kitulgala Beli-lena, a recently excavated rockshelter preserving a sedimentary sequence from the Late Pleistocene to the Holocene. Our analysis indicates in situ lithic production and the recurrent use of the bipolar method for the production of microliths. Stone tool analyses demonstrate long-term technological stability from c. 45,000 to 8,000 years BP, a pattern documented in other rainforest locations. Foraging behaviour is characterised by the use of lithic bipolar by-products together with osseous projectile points for the consistent targeting of semi-arboreal/arboreal species, allowing for the widespread and recurrent settlement of the wet zone of Sri Lanka.

Human settlement successions and lithic technology in the Kalokol area (west Lake Turkana, Kenya) during the African Humid Period

ABSTRACT The Kalokol Basin on the west side of Lake Turkana, northern Kenya, has yielded three sites dating to the African Humid Period (AHP), a wet phase with intermittent dry spells that characterised the African climate c. 15.0–5.5 kya. Drawing on the chronological and lithic datasets from the three sites, this paper examines human settlement successions and the associated lithic technology in the region during the AHP. The radiocarbon dates signify at least six episodes of human settlement, occurring approximately 13.6–13.3, 11.24–10.77, 10.24–10.20, 7.27–7.02, 6.26–6.00 and 3.61–3.47 kya. The notion of ‘settlement’ as applied here implies either long-term or short-term human activities at the sites. During these successive settlements, people employed similar survival strategies: they exploited local stone raw materials, consumed aquatic resources from the lake using specialised bone points and settled near riparian settings. Their lithic technology is best characterised by preferential knapping of locally available chert and chalcedony and the production of geometric microliths and a range of flakes from expedient and formal cores. The finds from the Kalokol Basin contribute to improving our understanding of human adaptive strategies in the wider Lake Turkana Basin during the AHP.

Making the Invisible Stratigraphy Visible: A Grid-Based, Multi-Proxy Geoarchaeological Study of Umhlatuzana Rockshelter, South Africa

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 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.

Возникновение микролитического производства в Монголии: исследовательская терминология и хроностратиграфическая позиция индустрий в верхнем палеолите восточной и южной части Азии

Territory of Mongolia is situated in the center of Asia, a crossroad of the potential migration routes, that connect different Eurasian macroregions. Here an example of earliest appearance and longterm existence of small blade and microblade production has been found. Beyond that, the industries, that appeared within limited area of the Middle Selenga Basin in the late MIS3 — early MIS2, contained the earliest for Northern and Central Asia geometric and non-geometric microliths. They have been found in the sediments of Kharganyn Gol 5 and Tolbor-4, — 16 and –21. They end up in LGM — post- LGM which cause depopulation in the region and following changes in the human groups, occupying this territory. An understanding of the character, causes and specifics of such early appearance of the microblade and bladelet production, and especially geometric microliths, impose the arrangement and definition of the terminology, associated with microlithic assemblages in Asia. This is due to the fact that in the archaeological definitions of both processes and the desired forms of artifacts associated with the production and use of microliths, there are significant discrepancies that complicate the understanding of the described phenomena. The article provides an overview of the research terminology of microlithization processes, and also determines the position of the microlithic complexes of Mongolia in the Upper Paleolithic system of the eastern part of Asia. Keywords: Mongolia, East Asia, Upper Paleolithic, lithic industries, microlithic technology

The flake microlithism in the European Pleistocene: The case of Bolomor Cave (MIS 9-5, Valencia, Spain)

The presence of small retouched stone tools in the lithic industries of the Middle Palaeolithic is a well-known and repeated -and not necessarily in recent times- fact in several European sites. Although modern research accepts the existence of microlithism in these contexts, it is necessary to define the process in the Palaeolithic industries of flakes with greater precision from the point of view of a technological aim in the societies of Neanderthal lineage. In this study, we analyse the case of Bolomor Cave (Tavernes de la Valldigna, Valencia, Spain) in an overview that includes statistics, techno-typology and metric analysis through the site’s main phases of occupation. We first analysethe raw material compositions of each phase as well as their possible catchment areas. In this study, the reconstruction of the original volumes is key to understanding the degree of exploitation of the blanks linked to the different processes of lithic reduction (shaping, recycling, resharpening). Microlithic production has been studied by analysing the inter-relation of several variables in categories and ranges that allow us to compare data along this long chronostratigraphic sequence (350–100 ka). In the future, this wide chronological range will evaluate this phenomenon, not only from the technological point of view but also from a functional overview, opening new interesting research lines. We also consider the scope and diffusion of microlithism through the lithic industries of the Middle Palaeolithic. We propose the denomination of flake microlithism as a concept based on the data exposed in Bolomor Cave and endorsed by data from other sites.

Diachronic Variation in Microlith Production Systems During the Late Pleistocene, Algeria

The Iberomaurusian lithic industries in the Maghreb are known for their microlithization characteristics beginning ca. 25 ka cal BP. The analyses of the Iberomaurusian lithic assemblages in Algeria have mostly focused on typological and stylistic issues. These are good for distinguishing the various archaeological entities encountered in the region but inadequate for understanding the techno-economic behaviors that these industries supported. A technological approach to analysis allows for the recognition of the choices made by the knappers throughout the core reduction processes, the blank production, the transformation of blanks into tools, and the debitage methods and techniques. It has proven useful for understanding not only lithic production process but also the roles that lithic tools played in various subsistence economies. Hence, this paper uses a technological approach to reanalyze the lithic assemblages from Tamar Hat, Rassel, and Columnata. The lithic industries of these three sites are characterized by the tendency toward microlithization as attested by the presence of small chipped stone artifacts on diminutive blanks. The results suggest that the hunter-gatherer populations of the Maghreb produced microliths using a wide range of technological options during the Late Pleistocene. The study also reveals diachronic changes in the production modalities of the microliths. These changes are likely related to variations in hunting strategies in different ecological niches and as adaptive strategies to various paleoclimatic events of the Late Pleistocene.

Comb Ware culture in Lithuania: new evidence from Šventoji 43

Šventoji 43 is one of eight Comb Ware culture sites known in Lithuania at present. The site was excavated in 2013 and 2014 and revealed a homogeneous pottery assemblage, which was classified as Comb Ware and was radiocarbon dated to 3900–3650 cal BC. As a result of this dating, it has been found that Comb Ware is the oldest pottery type to have been produced in coastal Lithuania. In fact, the pottery assemblage of Šventoji 43 also suggests that Comb Ware originates from a distinct phase in the pottery sequence of coastal Lithuania that both predates all other phases from Šventoji pottery bearing sites and has not been previously recognised in other assemblages. Zooarchaeological analysis has revealed that the site was occupied during the early spring and mostly used for fishing zander and pike in the lagoonal lake and for hunting seals and forest game. The unique character of the flint industry, which combined hard hammer percussion and bipolar knapping that resulted in the production of microliths on irregular blades, suggests that the local Šventoji 43 community had Mesolithic roots. Furthermore, this evidence supports the hypothesis that Comb Ware had reached Lithuania through intense contact between East Baltic hunter-gatherers rather than due to a mass migration of the population from the Northeastern Baltic. The much wider distribution of Finno-Ugric hydronyms, compared to that of Comb Ware sites gives an impression that some other Subneolithic pottery types in addition to Comb Ware might have been produced by Finno-Ugric speaking people.

Evolution of Silcrete Heat Treatment in Australia—a Regional Pattern on the South-East Coast and Its Evolution over the Last 25 ka

We document long-term evolution in the rate of heat treatment in Eastern Australia and explore them as a technological response to dynamic industrial and social contexts that developed in the last 25 millennia. We employed methods previously used in Africa but novel in Australia to infer long-term directional changes in the relative frequency of silcrete artefacts that were heat-treated. Our methods involved independent and cross-verifying tests of the presence or absence of heat treatment, employing visual classifications and surface roughness measures. These methods revealed a coherent series of increases over time in the landscapes around Sydney, so that Late Holocene assemblages displayed higher rates of heat treatment than terminal Pleistocene or Early Holocene ones. We hypothesise that the directional trend towards greater frequencies of heat-treated artefacts on Australia’s eastern seaboard is explicable in terms of the context of technological shifts towards microlith production superimposed onto an even longer term process of lithic resource depletion, perhaps compounded with the development of political barriers to the redistribution of knappable stone.

Reduction intensity of backed blades: Blank consumption, regularity and efficiency at the early Neolithic site of Boncuklu, Turkey

Estimating the extent of reduction intensity on lithic artefacts has become a key goal of lithic analyses in recent decades. An understanding of a core or tool's reduction intensity can lead to intra- and inter-site interpretations regarding patterns of human behaviour. Decades of research on this topic have led to a diverse suite of quantifiable measures of reduction encompassing almost all artefact types. We present and test the efficacy of a new method for measuring reduction intensity for backed blades, one of the few remaining artefact types lacking a reliable measure of reduction. As instances of successive retouching of backed blades are rarely documented, we use this reduction intensity metric to estimate original blank size, rather than model multiple stages of reduction. Allometric relationships of blade thickness to length and width were used to estimate original microlith blank size, thereby offering a quantification of reduction intensity. This method was then applied to the microliths, a specific type of small backed blade, from the early Neolithic site of Boncuklu, Turkey. Reconstructing the original mass and dimensions of microlith blanks allows inferences to be made regarding the regularity, efficiency and decision making involved in microlith production. These microliths were produced using similarly sized blanks that were selectively and nearly completely consumed in this reduction sequence. This aspect of lithic technology at Boncuklu involved little waste and therefore enabled the inhabitants to cope with the constraints of raw material access and negotiate the changes to subsistence and social organisation occurring at the beginning of the Neolithic. While we test the efficacy of this new method on the Neolithic of Turkey, it could equally be applied to any blade- or bladelet-based backed artefact industry. These industries existed at various times in Europe, the Near East, Africa, South Asia, and parts of Australia, together spanning the Middle Stone Age, Later Stone Age/Upper Palaeolithic, Epipalaeolithic, Mesolithic and Neolithic.

Early Holocene Occupations at Ashash Rock Shelter (Zemmur, Western Sahara)

AbstractThe archaeological record of the Western Sahara remains extremely fragmentary, with very few sites systematically excavated. The excavation at Ashash rock shelter (Zemmur region) has provided, for the first time in the region, the evidence of superimposition of two prehistoric occupations that have been radiocarbon dated to the early 9th millennium cal.BPand to the mid-7th millennium cal.BP. The Epipalaeolithic occupation is strongly marked by the standardised production of geometric microliths and points using a microburin blow technique. The Neolithic occupation of the site has yielded a few potsherds that provide the first unambiguous evidence of pottery in the Zemmur area in the mid-7th millennium cal.BP.

Blade and bladelet production at Hohle Fels Cave, AH IV in the Swabian Jura and its importance for characterizing the technological variability of the Aurignacian in Central Europe.

Hohle Fels Cave in the Ach Valley of Southwestern Germany exhibits an Aurignacian sequence of 1 m thickness within geological horizons (GH) 6–8. The deposition of the layers took place during mild and cold phases between at least 42 ka (GI 10) and 36 ka calBP (GI 7). We present below a technological study of blade and bladelet production from AH IV (GH 7) at Hohle Fels. Our analyses show that blade manufacture is relatively constant, while bladelet production displays a high degree of variability in order to obtain different blanks. Knappers used a variety of burins as cores to produce fine bladelets. The results reveal a new variant of the Aurignacian in the Swabian Jura primarily characterized by the production of bladelets and microliths from burin-cores. The artefacts from the Swabian Aurignacian are technologically and functionally more diverse than earlier studies of the Geißenklösterle and Vogelherd sequences have suggested. The technological analyses presented here challenge the claim that the typo-chronological system from Southwestern Europe can be applied to the Central European Aurignacian. Instead, we emphasize the impact of technological and functional variables within the Aurignacian of the Swabian Jura.

Early geometric microlith technology in Central Asia

Until recently, every industry with geometric microliths in Central Asia has been classified as Mesolithic solely on the basis that this technology appeared quite late in the region. The situation was further complicated by the absence of absolute dates for Upper Paleolithic and Mesolithic sites from this region. Recent research has proved a clear association between the earliest geometric microliths in Central Asia and the Upper Paleolithic Kulbulakian culture (Shugnou, layer 1; Kulbulak, layer 2.1). The most comprehensive archeological collection in Central Asia that documents the shift from the production of non-geometric microliths (backed bladelet, Arzheneh points) to geometric microliths (scalene triangles) in a very early chronological context is Dodekatym-2 site. The main morphometric characteristics of the Central Asian Upper Paleolithic geometric microliths correspond to the development of the Upper Paleolithic and Epipaleolithic of the Near East (Masraquan cultures) and the Middle East (Zarzian culture). The absolute dates available for the Dodecatym-2 site are older than presently known ones for the early Epipaleolithic Levantine industries with geometric microliths, thus making it possible to conclude that Central Asia was at least one of the microlitization origin centers.

Making and Breaking Microliths: A Middle Mesolithic Site at Asfordby, Leicestershire

Archaeological fieldwork preceding housing development revealed a Mesolithic site in a primary context. A central hearth was evident from a cluster of calcined flint and bone, the latter producing a modelled date for the start of occupation at 8220–7840 calbcand ending at 7960–7530 calbc(95% probability). The principal activity was the knapping of bladelets, the blanks for microlith production. Impact-damaged microliths indicated the re-tooling of hunting weaponry, while microwear analysis of other tools demonstrated hide working and butchery activity at the site. The lithics can be classified as a Honey Hill assemblage type on the basis of distinctive leaf-shaped microlithic points with inverse basal retouch.Such assemblages have a known concentration in central England and are thought to be temporally intermediate between the conventional British Early and Late Mesolithic periods. The lithic assemblage is compared to other Honey Hill type and related Horsham type assemblages from south-eastern England. Both assemblage types are termed Middle Mesolithic and may be seen as part of wider developments in the late Preboreal and Boreal periods of north-west Europe. Rapid climatic warming at this time saw the northward expansion of deciduous woodland into north-west Europe. Emerging new ecosystems presented changes in resource patterns and the Middle Mesolithic lithic typo-technological developments reflect novel foraging strategies as adaptations to the new opportunities of Boreal forest conditions. While Honey Hill-type assemblages are seen as part of such wider processes their distinctive typological signature attests to autochthonous, regional developments of human groups infilling the landscape. Such cultural insularity may reflect changing social boundaries with reduction in mobility range and physical isolation caused by rising sea level and the creation of the British archipelago.

Biomechanics of microliths manufacture: a preliminary approach to Neanderthal's motor constrains in the frame of embodied cognition.

The systems of perception and action of the brain appear as important constraining factors in human evolution under current models of embodied cognition. In this view, the emergence of certain items in the archeological record is not necessarily subsequent to the emergence of a 'symbolic' mind, but instead to the appearance of the sensory-motor systems enabling that behavior. One of the products normally absent in pre- Homo sapiens species is the standardized microlith, whose production seems very demanding for the hand due to their small size and need for fine craft. In the present study, we provide preliminary empirical evidence that the biomechanical requirements of microliths manufacture made this industry difficult to achieve by Neanderthals. The biomechanical parameters of the human hand in the manufacture of microliths are here explored in two individuals with different degrees of expertise. The figures obtained in this manner are subsequently contrasted and extrapolated to Neanderthal's hand anthropometric data, as obtained from the available literature. Results indicate that Neanderthals would exhibit lower efficiency than modern humans as a consequence of their smaller hands and shorter arms, resulting in a smaller area to distribute forces and an increased mechanical stress in the microlith manufacturing processes. This might be a plausibly contributing factor for precluding microlith production in Neanderthals on noticeable scales, in consonance with the archeological record.

Recent Investigations on Holocene Occupations in Northeastern Algeria: The Contribution of Kef en-Naga

The discovery of Kef en-Naga site, an open-air human occupation in northeastern Algeria, was favored by a sandstone quarrying where work truncated much of the archaeological sequence on its cross-section. A multidisciplinary rescue excavation conducted on this site provided, for the first time in the region, the evidence of superimposition of two stratigraphic levels (lower and upper) of sandy clay deposits formed in humid paleoenvironmental conditions. Besides, XRD analysis show that a large amount of hematite (Fe2O3) is localized at the lower level of the stratigraphic section, where iron is found in oxide form due to the moisture. As for rock magnetic property characterization analysis, the various magnetic parameters have strong values in the upper level, and the grains are small-sized. However, various magnetic parameters are lower at the lower level and the magnetic grain concentration is reduced. Although the site is lacking faunal and carpological remains, thereby depriving us of reliable dates, the two stratigraphic levels are correlated to the Holocene according to archaeological and paleoenvironmental considerations. The lower level likely corresponding to an early Epipaleolithic culture marked by the production of microliths using a microburin blow technique, while the upper level is related to a subsequent Epipaleolithic phase, characterized by the disappearance of microburin blow technique, the dominance of an industry on flakes and the existence of pressure debitage.

Quartz knapping strategies in the Howiesons Poort at Sibudu (KwaZulu-Natal, South Africa).

The variability associated with Sibudu's Howiesons Poort Industry highlights the unpredictable trajectory of technology in the Middle Stone Age. We reach this conclusion through a study of the technology on quartz from one of the Howiesons Poort layers (Grey Sand) from Sibudu rock shelter. Quartz bifacial technology has previously been described at the site, but this new in-depth study of the quartz technology reveals other strategies. First is the recurring employment of bipolar knapping, formerly considered as a defining feature of the Later Stone Age. Secondly, we highlight a laminar technology with emphasis on small quartz bladelets. Bipolar cores are most common, followed by prismatic cores. The knapping strategies in Grey Sand seem to involve systematic recycling and the deliberate production of microliths.

Microliths in the Middle and Later Stone Age of eastern Africa: New data from Porc-Epic and Goda Buticha cave sites, Ethiopia

Microliths and microlithic industries are central to definitions of the Later Stone Age technologies. It is generally accepted that microliths are associated with a change to more complex hunting technologies and strategies. However, because there is evidence of microlith production in Middle Stone Age contexts, there are debates regarding the significance of the presence of microliths within an assemblage. This paper aims to analyse the microlithic component of Middle and Later Stone Age assemblages in the eastern Ethiopia region, by means of lithic assemblages from two major cave sites, Porc-Epic and Goda Buticha.This paper presents a short review of the different meanings of the term “microlith” and of the diversity of microlith-bearing assemblages in the Middle and Later Stone Age in sub-Saharan Africa. An analysis of the microliths is presented using a methodology which helps to distinguish intentionally produced versus accidentally produced microliths, from Porc-Epic and Goda Buticha assemblages. The results of this study indicate that no intentional microliths are present in Porc-Epic assemblages, in contrast with those recovered in the Goda Buticha assemblages. Interestingly, very few microliths are present in the Pleistocene Middle Stone Age levels; they are more numerous (but not overwhelmingly) in the Holocene Later Stone Age levels of these sites. These results contribute to the discussion of the role of microliths in the Middle and in the Later Stone Age in this particular region of eastern Ethiopia.

Composite projectiles and hafting technologies at Ohalo II (23 ka, Israel): analyses of impact fractures, morphometric characteristics and adhesive remains on microlithic tools

This study focuses on the correlation between the production of backed microliths in the Levant during the late Upper Palaeolithic and their use as side elements of composite projectile weapons. The investigation is based on assemblage sample of microliths from Ohalo II, a 23,000 years old submerged campsite, and involves analyses of diagnostic impact fractures, location of adhesive remains and morpho-metric characteristics of the tools. Two distinct adhesive materials have been also analyzed, and the preliminary results indicate the use of both calcareous and organic substances.The use of backed microliths as side elements of composite projectiles has been followed for scalene triangles – a microlithic type unknown from the earlier Upper Palaeolithic in the Levant. The reconstruction of their use has been established based upon all the three evidence lines, i.e., patterns of impact fractures, as well as the location of adhesive remains and the morpho-metric characteristics of the microliths. The results of the study show an Upper Palaeolithic – Epipalaeolithic continuity in the approach to the design of hunting weapons and hafting technologies. It is also suggested that the origins of composite projectiles in the Levant may be found in the earlier phases of the Upper Palaeolithic.