Κυριακή 10 Νοεμβρίου 2019

Paleobiology and Taphonomy of a Middle Paleolithic Neandertal Tooth from Ciemna Cave, Southern Poland
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Paleobiology and Taphonomy of a Middle Paleolithic Neandertal Tooth from Ciemna Cave, Southern Poland

Examining the Origins of Hafting in South Asia

Abstract

The appearance of hafting technologies marks a key shift in hominin behavioural evolution. Hafting first appears in Africa and Western Eurasia across the transition from Late Acheulean to Middle Palaeolithic technologies ~ 300–200 thousand years ago (ka). Hafting technology in South Asia may have emerged as a result of a local innovation, through cultural diffusion or a population dispersal. The resolution of the South Asian Palaeolithic records has improved significantly over the past decade, enabling examination of patterns of change through time in stone tool technologies. Although functional studies of tool use remain limited in the region, a range of indices of hafting appear in stone tool assemblages that offer the first means to evaluate the origins of hafting in South Asia. Rare examples appear in Middle Pleistocene contexts, but indices of hafting appear repeatedly in Middle Palaeolithic assemblages dating within the past 100 thousand years and are commonplace amongst Late Palaeolithic assemblages dating within the past 45 thousand years. This dataset remains too immature to authoritatively resolve between alternate models for the origins of hafting, whereas direct association with discrete hominin populations is hampered by the region’s scant fossil record. Nevertheless, this examination of the origin of hafting technology presents the means to reorient approaches to Late Pleistocene behavioural change in South Asia and integrate them within global debates regarding hominin innovation, demographic interaction and population expansion.

Upper Palaeolithic Settlement and Mobility in the Armenian Highlands: Agent-Based Modeling, Obsidian Sourcing, and Lithic Analysis at Aghitu-3 Cave

Abstract

Excavations at Aghitu-3 Cave in Armenia revealed stratified Upper Palaeolithic archaeological horizons (AHs), spanning from 39 to 36,000 cal BP (AH VII) to 29–24,000 cal BP (AH III) and from which we identified the sources of 1120 obsidian artifacts. Not only does AH III—deposited at the onset of the Last Glacial Maximum—have the most artifacts from non-regional sources but also the artifacts originate from the greatest variety of sources, including two ≥ 270 km on foot in different directions. The amount of retouch and density of lithics—as expressed by whole assemblage behavioral indicators (WABI)—suggest a trend from more expediency to more curation between the deposition of AHs VII and IV. This was followed by a substantial shift back to expediency during the deposition of AH III, corresponding to greater logistical mobility. Here, we use agent-based modeling (ABM) to interpret these data. Greater interactions between foraging groups are not an unavoidable outcome of a shift from residential to logistical mobility. Some variables (i.e., lithic stock, use intensity, provisioning strategy) can be ruled out, while other variables (i.e., decreased source abundance, a shift to direct procurement) appear inconsistent with the archaeological data. Territory spacing, in contrast, has a clear and predictable effect. A small decrease in territory spacing can yield notable increases in inter-group contact opportunities and can be explained by an increase in population densities as the climate cooled. Following this scenario, we assume that, as AH III accumulated, the cave’s occupants not only moved farther distances but also more frequently encountered neighboring groups.

The Dating of a Middle Paleolithic Blade Industry in Southern Russia and Its Relationship to the Initial Upper Paleolithic

Abstract

The open-air site of Shlyakh, located near Volgograd in southern Russia, contains two assemblages of stone artifacts assigned to the Middle Paleolithic. Most of the artifacts are buried in low-energy stream deposits and appear to be in primary context (i.e., they do not exhibit signs of stream transport). The lithic technology reflects an emphasis on blade production and Levallois products are present. The artifacts lie in sediments formed during and immediately following the Laschamp Paleomagnetic excursion (41.2 ± 1.6 ka); they underlie the Mono Lake excursion (34.2 ± 1.2 ka). Although the radiocarbon dating is broadly consistent with the paleomagnetic stratigraphy, the wide range of ages obtained on bone from the upper assemblage suggests that older materials may have been introduced to one or both cultural layers. The dating and contents of Shlyakh are discussed in the wider context of events in Europe during ~ 50–40 ka. At this time, an Initial Upper Paleolithic (IUP) industry (Bohunician), characterized by Levallois blade technology and a high proportion of Upper Paleolithic tool types, is established in central Europe and on the southwest plain of eastern Europe. A different pattern is evident on the south-central plain, however, where the IUP is absent and a local “transitional unit” in the form of a Middle Paleolithic blade industry is represented at Shlyakh and other sites during 50–40 ka.

New Chronology and Stratigraphy for Kathu Pan 6, South Africa

Abstract

Kathu Pan 6 (Northern Cape Province) is an open-air site exposed by sinkhole activity that includes a Middle Stone Age Howiesons Poort (HP) component in a stratigraphic sequence that also includes Later Stone Age, early Middle Stone Age, and Earlier Stone Age (Fauresmith) assemblages. Here, we present the dating of the Kathu Pan 6 sequence using multiple luminescence signals: optically stimulated luminescence (blue OSL) and thermally transferred OSL (TT-OSL) on quartz; and the infrared stimulated luminescence (IRSL) post IR-IR290 signal on potassium feldspar. The results obtained from analyses of different minerals and signals for the archaeological deposits do not always conform but the quartz OSL provides the most accurate set of ages for the HP at KP6 (between 100 ± 6 and 74 ± 5 ka). This age range places the KP6 HP earlier than any of the scenarios considered plausible by Jacobs and Roberts (Journal of Human Evolution, 107, 1–13 2017) but fits well with the extended duration for the HP at Diepkloof proposed by Tribolo et al. (Journal of Archaeological Science, 36(3) 730–39 2009) and promoted by Feathers (Journal of Archaeological Science, 63, 164–174 2017). Two OSL ages bracket the Later Stone Age Wilton industry at KP6, placing it between 5.7 ± 0.3 ka and 2.3 ± 0.1 ka. These fit with known ages for the Wilton and place the KP6 occupation contemporary with Strata 4c–3b at Wonderwerk Cave.

30,000-Year-Old Geometric Microliths Reveal Glacial Refugium in Dhofar, Southern Oman

Abstract

Despite its significant geographic position along the southern corridor into and out of Africa, little is known of the period between 70 and 12 thousand years ago in South Arabia. The existing archeological data come from a handful of lithic surface scatters and buried sites with broad chronological constraints. Here, we report the open-air site of Matafah, a stratified deposit in the Wadi Ghadun drainage system of Dhofar, southern Oman. The accretional terrace discovered at Matafah is composed of low-energy overbank sediments interstratified with cemented layers of fluvial gravels, eolian sands, and hillslope deposits. Three discrete archeological horizons were excavated from the 2.5-m stratigraphic sequence, including Holocene assemblages that overlie a heretofore-unknown assemblage type with geometric microliths. Optically stimulated luminescence age estimates bracket this lower assemblage between 33 and 30 thousand years ago, providing the earliest evidence for the use of projectile armatures in the Arabian Peninsula.

New Data from Shovakh Cave and Its Implications for Reconstructing Middle Paleolithic Settlement Patterns in the Amud Drainage, Israel

Abstract

This study presents the geoarchaeological and geochronological aspects of Shovakh Cave and the first comparative context to the nearby Amud Cave (~ 500 m downstream), providing an exceptional opportunity to explore the range of human behaviours within a small geographic area. Sediment samples from two newly excavated areas at the rear and entrance of the cave were analysed using infrared spectroscopy, micromorphology and phytolith analysis and dated through uranium-thorium and luminescence techniques. The rear of the cave shows carnivore activity and low artefact concentrations. It also exhibits a shift in sedimentation from wind-blown deposits to colluviation of terra rossa. Direct dating of the deposits associated with the Middle Palaeolithic (MP) occupation at this area could not be obtained due to the breccia forming at the lower part of the excavation area. However, the later phases of the Middle Palaeolithic occupation at this area gave an age estimate of 45.5 ± 3.7 ka. At the entrance of the cave, there are relatively more residues associated with human use of fire. Post-depositional processes in this area include decalcification of the upper layer, cementation of the lower layer and phosphatisation due to guano decomposition, which indicates that this area was probably roofed. The ages obtained in this area range between 67.5 ± 5.5 to 56.2 ± 5.9 ka, overlapping with the occupation time of Amud cave. The evidence from Shovakh Cave presents lower intensity of occupation compared to Amud, indicating variable modes of site use by humans in the Amud drainage during the Late Middle Palaeolithic.

Late Middle Stone Age Behavior and Environments at Chaminade I (Karonga, Malawi)

Abstract

The African Middle Stone Age (MSA, typical range ~ 320–30 ka) has been the subject of intense research interest in recent decades as a culture-chronological Unit associated with the emergence and dispersal of our species. Recent results of this work have shown that sites designated as “MSA” contain common approaches to lithic reduction, but that within this rubric, there is much diversity in overall assemblage characteristics and the timing of their appearance across the continent. As researchers recover more data from more sites, especially from undersampled geographic regions, this more complex picture of the MSA reveals technological and other behavioral diversity in early modern human populations that may inform about the ultimate success of our species. Here we add to this growing database by describing the environmental context and characteristics of two concentrations of stone artifacts from the late MSA (~ 43–21 ka) open-air locality of Chaminade-I (CHA-I), near the town of Karonga in northern Malawi. The CHA-I lithic artifacts show a flexible approach to stone tool production and use that is common to assemblages in Karonga but distinctive from MSA sites reported elsewhere. Radial and minimally reduced cores typify an unelaborated lithic assemblage, in which raw material choice is driven by toolstone clast size and shape rather than preferential use or treatment of specific materials, as found in MSA assemblages in the East African Rift, South Africa, and the North African coast. Lithic reduction at CHA-I took place within a woody, riparian context embedded within a more open woodland landscape. Most artifacts occurred in near-channel sandy deposits dated to ~ 41 ka, and were buried under alluvial fan deposits that began aggrading by at least ~ 21 ka and continued beyond ~ 5.5 ka within a grassy, open landscape. The site’s late MSA age and lack of elaboration in lithic technology challenges straightforward ideas of increasing complexity in human technological behavior over time and provides important insight into the diversity of MSA technologies and the environmental conditions in which they existed.

Flexibility and Conceptual Fidelity in the Production of Keilmesser with Tranchet Blow

Abstract

The present paper discusses terminological and technological issues related to prominent stone artifacts of the Middle Paleolithic. The Keilmesser with tranchet blow in focus can be described as asymmetrical (mostly bifacial) knives with a back, whose active edge has been shaped by a modification called tranchet blow (Fr. coup de tranchet, Ger. Schneidenschlag) in such a way that a straight, stable, small-angled cutting edge is formed. With regard to the spatial and chronological setting, this paper focuses on Western and Central European assemblages from the late Middle Paleolithic. Referring to earlier contributions, the difficulty of these artifacts lies not only in their recognition and analysis, but also in the disparate terminology underlying other studies. Therefore, this work represents an attempt to propose a uniform terminology in order to enable the comparison of these remarkable lithic artifacts within different assemblages. Furthermore, we offer a precise description of the pieces with regard to their technological differentiation from pieces with supposedly similar modifications. This study is an attempt to use technological aspects to further develop a tool concept that reflects the flexibility and conceptual fidelity in the production of Keilmesser with tranchet blow. The decisive factor for this concept is its great dynamic, since the equifinal property of the tranchet blow can be achieved flexibly via different production paths.

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