A new tephrochronology for early diverse stone tool technologies and long-distance raw material transport in the Middle to Late Pleistocene Kapthurin Formation, East Africa

2018 ◽  
Vol 121 ◽  
pp. 75-103 ◽  
Author(s):  
Nick Blegen ◽  
Brian R. Jicha ◽  
Sally McBrearty
2016 ◽  
Vol 3 (2) ◽  
Author(s):  
María Soto

The Picamoixons site is a rockshelter located in the province of Tarragona (NE Iberian Peninsula). It was object of two rescue campaigns during 1988 and 1993, which led to the recovery of a complete archaeological assemblage, including stone tools as well as faunal and portable art remains that date the occupation to the 14th to 11th millennium BP (calibrated). This study involves a petrographic characterisation of the stone-tool assemblage in order to establish: 1) the procurement areas, 2) the raw materials management strategies and 3) the mobility radius and territorial sizes of the hunter-gatherers groups that occupied the site. The method applied comprises in a multiscale analysis that includes systematic prospection, the petrographic characterisation of geological and archaeological samples, an analysis of the chert types represented in the knapping sequence, and the definition of the mobility axes and areas frequented according to lithic procurement.A petrographic analysis of the chert in the prospected area led to the definition of nine macroscopic varieties related to five types (Vilaplana, Morera, Maset, Vilella and Tossa cherts), related to Lower and Upper Muschelkalk (Triassic), Lutetian, Bartonian (Palaeocene) and Sannonian (Oligocene) deposits.The study of the knapping sequences indicates the main exploitation of Bartonian cherts (Tossa type), and the use of Lutetian cherts (Maset and Morera types) for configuring retouched tools. The exploitation of the remaining raw material types identified is considered sporadic and opportunistic.Defining the procurement areas enabled the mobility radius to be assessed as between 3 and 30 km, highlighting the importance of the fluvial basins as natural movement pathways. The results indicate that the main procurement territory was 16 km2 in area, associable with a forager radius. The most remote procurement distances suggest a maximum exploitation area of 260 km2, defining an intra-regional range. This range presents parallelisms with various contemporaneous hunter-gatherers groups in Western Europe, suggesting a progressive mobility reduction dynamic during the Late Pleistocene-Initial Holocene.


2019 ◽  
Author(s):  
Kersten Bergstrom ◽  
Austin B. Lawrence ◽  
Alex J. Pelissero ◽  
Lauren J. Hammond ◽  
Eliwasa Maro ◽  
...  

Isimila is a Middle Pleistocene archaeological site located in southern Tanzania. The site is known for large surface assemblages of later Acheulean lithics such as hand axes, cleavers, scrapers, and cores. While hominin remains have yet to be discovered at the site, Isimila offers a unique window into Middle Pleistocene Homo behavior. Although Isimila has been studied extensively, the last published map of the site and surrounding area was made available in the 1970s. Here, we present an updated high-resolution map of Isimila. Data for the map were collected during aerial survey with an uncrewed/unmanned aerial vehicle (UAV). With this map, we identify new archaeological localities, erosional patterns, newly exposed geological features, and changes in site topography. The map reveals patterns of stone tool and raw material distribution that may support previous hypotheses of raw material transport into the area by hominins. This open-access map establishes a baseline for tracking changes to site topography in the future and serves as a unique tool to enable collaboration between researchers, museum personnel, and local populations to better conserve Isimila.


2018 ◽  
Author(s):  
Gary E. Stinchcomb ◽  
◽  
William E. Lukens ◽  
Steven L. Forman ◽  
Katie M. Binetti ◽  
...  

2021 ◽  
Vol 9 ◽  
Author(s):  
Julio Mercader ◽  
Siobhán Clarke ◽  
Makarius Itambu ◽  
Abdallah Mohamed ◽  
Musa Mwitondi ◽  
...  

The rock shelter site of Mumba in northern Tanzania plays a pivotal role in the overall study of the late Pleistocene archaeology of East Africa with an emphasis on the Middle to Later Stone Age transition. We used phytolith analysis to reconstruct general plant habitat physiognomy around the site from the onset of the late Pleistocene to recent times, tallying 4246 individual phytoliths from 19 archaeological samples. Statistical analysis explored phytolith richness, diversity, dominance, and evenness, along with principal components to compare phytolith distributions over the site’s sequence with known plant habitats today. Generally, the phytolith record of Mumba signifies paleoenvironments with analogs in the Somalia – Masai bushland and grassland, as well as Zambezian woodlands.


PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256090
Author(s):  
Paola Villa ◽  
Giovanni Boschian ◽  
Luca Pollarolo ◽  
Daniela Saccà ◽  
Fabrizio Marra ◽  
...  

The use of bone as raw material for implements is documented since the Early Pleistocene. Throughout the Early and Middle Pleistocene bone tool shaping was done by percussion flaking, the same technique used for knapping stone artifacts, although bone shaping was rare compared to stone tool flaking. Until recently the generally accepted idea was that early bone technology was essentially immediate and expedient, based on single-stage operations, using available bone fragments of large to medium size animals. Only Upper Paleolithic bone tools would involve several stages of manufacture with clear evidence of primary flaking or breaking of bone to produce the kind of fragments required for different kinds of tools. Our technological and taphonomic analysis of the bone assemblage of Castel di Guido, a Middle Pleistocene site in Italy, now dated by 40Ar/39Ar to about 400 ka, shows that this general idea is inexact. In spite of the fact that the number of bone bifaces at the site had been largely overestimated in previous publications, the number of verified, human-made bone tools is 98. This is the highest number of flaked bone tools made by pre-modern hominids published so far. Moreover the Castel di Guido bone assemblage is characterized by systematic production of standardized blanks (elephant diaphysis fragments) and clear diversity of tool types. Bone smoothers and intermediate pieces prove that some features of Aurignacian technology have roots that go beyond the late Mousterian, back to the Middle Pleistocene. Clearly the Castel di Guido hominids had done the first step in the process of increasing complexity of bone technology. We discuss the reasons why this innovation was not developed. The analysis of the lithic industry is done for comparison with the bone industry.


2018 ◽  
Vol 56 ◽  
pp. 23-33
Author(s):  
Mar Rey-Solé ◽  
Maria Pilar García-Argüelles ◽  
Jordi Nadal ◽  
Xavier Mangado ◽  
Anders Scherstén ◽  
...  

The l’Hort de la Boquera site is located in the northeastern part of Iberia and its stone tool assemblage includes up to 25,000 flint artefacts. This is the first approach to the analysis of the raw material through an archaeopetrological study. Results were obtained by use of mineralogi¬cal techniques: macroscopic and petrographic analysis, Scanning Electronic Microscopy (SEM), Micro-Raman and X-Ray diffraction (XRD); additionally, Laser Ablation Inductively Coupled Plasma Mass Spectrometry was applied. It has been possible to discriminate at least four flint categories, the ‘Evaporitic flint type’ (with two local subvarieties – ‘Common evaporitic’ and ‘Garnet’ varieties) that comes from local outcrops of the Ulldemolins Complex, and two flint types that had their origin further afield: the ‘Charophyta flint type’ (coming from the Torrente de Cinca Unit) and the ‘Dark flint type’ (from the La Serra Llarga Formation).These results make this study the most comprehensive analysis of raw materials that has been carried out in the area so far


Antiquity ◽  
1998 ◽  
Vol 72 (277) ◽  
pp. 475-484 ◽  
Author(s):  
P. M. Vermeersch ◽  
E. Paulissen ◽  
P. Van Peer ◽  
S. Stokes ◽  
C. Charlier ◽  
...  

Discussion about a possible African origin of modern humans is hampered by the lack of Late Pleistocene skeletal material from the Nile valley, the likely passage-way from East Africa to Asia and Europe. Here we report the discovery of a burial of an anatomically modern child from southern Egypt. Its clear relation with Middle Palaeolithic chert extraction activities and a series of OSL dates, from correlative aeolian sands, suggests an age between 49,800 and 80,400 years ago, with a mean age of 55,000.


Author(s):  
Chris Urwin ◽  
James W. Rhoads ◽  
Joshua A. Bell

The Papuan Gulf’s littoral coastline has been emerging and transforming since the late Pleistocene. Large river deltas such as the Fly, Kikori, and Purari transport sediments into the Coral Sea, and these are reworked by prevailing tides and seasonal currents to form a world of sand and swamps that Papuan Gulf peoples inhabit. This article reviews the archaeology of key sites in the region and identifies themes for future explorations of the region’s rich heritage. It explores how the region’s delta-dwelling societies occupied, modified, and made sense of their relatively fluid physical environments. Two aspects are explored in detail: (1) the potential to historicize the emergence of sago cultivation and its role in sustaining local settlements and long-distance trade; and (2) the contribution of nuanced spatial histories of migration and place-making to the region’s narrative.


Author(s):  
Charles Kunaka ◽  
Gaël Raballand ◽  
Mike Fitzmaurice

In East Africa, there have been numerous concerns over logistics efficiency. Among them, a slow pace of regional integration of the trucking industry is perceived as a major problem. This chapter utilizes a combination of unpublished data surveys and published data to assess the extent of regional integration. Based on various types of data, several main messages can be drawn from the trucking industry: there has been a noticeable reduction in the price of long-distance trucking services along the Northern Corridor; the integration of trucking services is moving fast in East Africa, with foreign-owned trucks accounting for three-quarters of services in the Rwandan market; trucking fleet characteristics and management have improved tremendously and are now comparable to those in South Africa; and the facilitation of border clearance processes has played a major role in improving productivity. Despite all these improvements, the performance of the Tanzanian fleet still lags behind.


2020 ◽  
Vol 17 (162) ◽  
pp. 20190377 ◽  
Author(s):  
Alastair Key ◽  
Tomos Proffitt ◽  
Ignacio de la Torre

For more than 1.8 million years hominins at Olduvai Gorge were faced with a choice: whether to use lavas, quartzite or chert to produce stone tools. All are available locally and all are suitable for stone tool production. Using controlled cutting tests and fracture mechanics theory we examine raw material selection decisions throughout Olduvai's Early Stone Age. We quantify the force, work and material deformation required by each stone type when cutting, before using these data to compare edge sharpness and durability. Significant differences are identified, confirming performance to depend on raw material choice. When combined with artefact data, we demonstrate that Early Stone Age hominins optimized raw material choices based on functional performance characteristics. Doing so flexibly: choosing raw materials dependent on their sharpness and durability, alongside a tool's loading potential and anticipated use-life. In this way, we demonstrate that early lithic artefacts at Olduvai Gorge were engineered to be functionally optimized cutting tools.


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