Search

Since the oldest known Acheulean lithic techno-typological features in Europe were reported at the site of Barranc de la Boella (Tarragona, Spain), continuous fieldwork has been conducted there in archeological deposits of the late Early Pleistocene age (0.99–0.78 Ma). As a result, excavations in two of the three open-air localities have significantly expanded the collection of lithic and faunal remains, allowing us to make progress in the interpretation of the hominin behaviors in an open-air fluvial-deltaic sedimentary environment. This includes examples of cumulative palimpsests, such as those found at the locality of La Mina, in which hominins only had a minimal role as modifying agents, as well as the extraordinary mammoth butchery site recorded at the Pit 1 locality. The aim of this paper is to present a comprehensive update of the collection of large shaped tools and to assess its significance in the framework of the earliest occurrence of the Acheulean in Europe. This cultural entity is increasingly well-documented for the early Middle Pleistocene, but very little is known about its presence in Europe before the Brunhes–Matuyama boundary. Large shaped tools appear in the three localities explored in the Unit II of Barranc de la Boella, including choppers (unifacial and bifacial) and standard Acheulean forms, such as picks, knives, and cleaver-like forms. Techno-typological and morphometrical analyses revealed a basic heavy-duty component obtained through simple shaping sequences coupled with significantly more elaborate tools produced on various large blanks (cobbles, slabs, or flakes). The complete bifacial and bilateral shapings have yet to be documented, but the present specific tool assemblage attests to the Early Acheulean technological threshold. Hence, the archaeological data from Barranc de la Boella provide insights into the first appearance of the Acheulean technology in Europe and add critical information to the debate on the technological variability of the Early Pleistocene hominin occupation of the continent. The results of this study revealed a technological assemblage unique in the known late Early Pleistocene archeological record from Europe, different from the rest of ancient Acheulean sites in this continent, which are dated at the Middle Pleistocene. This lends support to the hypothesis that Barranc de la Boella may represent a previously unrecognized Early Acheulean dispersion out of Africa connected to its first evidence at the gates of Eurasia, potentially moving over the northern Mediterranean coastal road to reach Western Europe., The Barranc de la Boella fieldwork was supported by Ajuntament de la Canonja and by Departament de Cultura of Generalitat de Catalunya (CLT009/22/000024). Research was developed within the frame of the projects PID 2021-122355NB-C32 (Spanish MICINN-FEDER), SGR 2021-01239, SGR 2021-01237, and SGR 2021-01238 (Catalan AGAUR), and 2022PFR-URV-64 (URV). Institut Català de Paleoecologia Humana i Evolució Social (IPHES-CERCA) received financial support from the Spanish Ministry of Science and Innovation through the “María de Maeztu” program for Units of Excellence (CEX 2019-000945-M). DL was supported by a postdoctoral Xunta de Galicia grant (ED481B-2022-048). LA was the beneficiary of a H2020-MSCA-IF-2020 grant (101028232). PG-M was supported by a Beatriu de Pinós MSCA-COFUND (AGAUR) (2019 BP 00094). AA was supported by the MICINN “María de Maeztu” excellence accreditation. JF-M was the beneficiary of a post-doctoral contract Margarita Salas from MIU, funded by the Next-Generation EU fund and by “Plan de recuperación, transformación y resiliencia”. GY was supported by a MICINN grant (PRE2021-098328). AP was supported by the LATEUROPE (101052653), ERC, and European Union’s HORIZON1.1. research program. AR, AG-T, and DF were supported by the Spanish Ministry of Science and Innovation (MICINN/FEDER): PID2021-122356NBI00. DF was supported by the MICINN FPU program (FPU20/03389)., With funding from the Spanish government through the "Severo Ochoa Center of Excellence" accreditation CEX 2019-000945-M.

New methodological approaches focused on studying the reduction and use-life of stone tools have emerged in recent years, enabling researchers to move beyond strict technical and technological characterizations and explore specific aspects of occupation dynamics and economic management of resources. Previous studies have shown the importance of reduction distributions of individual measurements rather than averaged values. In this sense, survival analysis, and more specifically Weibull distributions, are one of the main inferential tools used in reduction studies. However, the resolution of Weibull distribution obtained from different methods has not been tested experimentally. In this paper, we present an evaluation of some of the main methods used in the study of core reduction intensity, such as the Volumetric Reconstruction Method, the Scar Density Index, and the non-cortical surface percentage. Our results show 1) strong and positive correlations between these approaches and actual reduction intensity, 2) similar Weibull distributions for non-cortical surface percentage, Volumetric Reconstruction Method, and logarithmic transformation of Scar Density Index. In addition, 3) the results from each method show a similar intra-assemblage variation, with a high percentage of agreement between them. As a result, all the evaluated proposals are useful and reliable methods for estimating the degree of reduction. Finally, a workflow is proposed for approaching reduction in archaeological assemblages by integrating different methods in the same study. This work has been carried out with the financial support of the Generalitat de Catalunya, AGAUR agency (2017SGR1040 Research Group), the Universitat Rovira i Virgili (2019PFR-URV-91), and the Spanish Ministry of Science, Innovation and Universities (MICINN/FEDER project PGC2018-093925-B-C32). The Institut Català de Paleoecologia Humana i Evolució Social (IPHES-CERCA) has received financial support from the Spanish Ministry of Science and Innovation through the “María de Maeztu” program for Units of Excellence (CEX2019-000945-M). D.L. is funded by Post-Doc Xunta de Galicia Grant (ED481B_2022_048). J.R.R. is a beneficiary of a Margarita Salas postdoctoral fellowship (MARSALAS21-22) funded by the Spanish Ministry of Universities, the European Union-Next Generation EU, and the University of Alicante. A.C.-T. is grateful to the Max Planck Society for funding. The research of J.I.M. was supported by the Spanish Ministry of Science and Innovation through the “María de Maeztu” excellence accreditation (CEX2019-000945-M).

[EN] The Aïn Beni Mathar – Guefaït (ABM-GFT) region in Eastern Morocco is the object of an archaeological, palaeontological, geological and geochronological research project, led by an international team since 2006. The research in this former fluvio-lacustrine basin, roughly 2000 km2, has revealed a significant number of Pleistocene and Holocene sites. Here we introduce the research project, that we conduct in the region, the main issues it aims to address, and the results already obtained., [FR] Depuis 2006, la région de Aïn Beni Mathar – Guefaït (ABM-GFT) au Maroc Oriental, fait l’objet d’un projet de recherche en archéologie, paléontologie, géologie et géochronologie, mené par une équipe internationale. Ces recherches ont permis la découverte d’un nombre significatif de gisements d’âge Pléistocène et Holocène, dans un ancien bassin fluvio-lacustre, qui s’étend sur une surface de 2000 km2. Notre objectif ici est de présenter le projet de recherche, que nous entamons dans la région, la problématique qu’il traite et les premiers résultats déjà obtenus., Funding for this research was provided by: Palarq Foundation, Spanish Ministry of Culture and Sport (Ref: 42-T002018N0000042853 & 170-T002019N0000038589), Direction of Cultural Heritage (Ministry of Culture and Communication, Morocco), Faculty of Sciences (Mohamed 1r University of Oujda, Morocco), INSAP (Institut National des Sciences de l’Archéologie et du Patrimoine), Spanish Ministry of Science, Innovation and Universities (Ref: CGL2016-80975-P, CGL2016-80000-P, PGC2018-095489-B-I00 and PGC2018-093925-B-C31) and Research Groups Support of the Catalonia Government (2017 SGR 836 and 2017 SGR 859). R.S-R, M.G.CH., J.I.M., A.C., F.R., A.R.-H., E.A., I.E., F.B., J.A., HA.B., P.S., P.P., D.L., I.R. y E.M. research is funded by CERCA Programme/ Generalitat de Catalunya. J.I.M. and A.R.-H research is funded by the Spanish Minitry of Science and Innovation under the “María de Maeztu” Program for Unities of Excellence (CEX2019-000945-M). M.S. has been granted by the Research Program UAM Tomás y Valiente 2019. C.T. is funded by the Ramón y Cajal Program. M.F. and M.E.A. received a fellowship under the Erasmus Mundus Scholarship of the European Education and Culture Executive Agency in the Master in Quaternary and Prehistory at URV. The research of M.D. is funded by the Australian Research Council (ARC) Future Fellowship Grant FT150100215 and the Ramón y Cajal Program (RYC2018-025221-I). P.P. has been granted a post-doctoral post under the Spanish Ministry of Science and Innovation “Juan de la Cierva-Incorporación” Program (Ref. IJC2020-044108-I). E.M-R. is beneficiary of a PTA Ref. PTA201714619-I. G.G.-A. has been granted a “Ford - Apadrina la Ciencia” contract. C.D.-C has been granted a Fundación Atapuerca fellowship. A.C.A. was funded by Junta de Castilla y León (project BU235P18) and the European Regional Development Fund (ERDF). The Institut Catalá de Paleoecologia Humana i Evolució Social (IPHES-CERCA) has received financial support from the Spanish Ministry of Science and Innovation through the ‘María de Maeztu’ program for Units of Excellence (CEX2019-000945-M).

Copyright (c) 2018 Consejo Superior de Investigaciones Científicas (CSIC), [EN]: This paper details the fieldwork and multi-disciplinary studies carried out at the site Balma de la Vall (Montblanc, Tarragona). The first interventions, dating from the early 80’s, identified different occupational levels related to Final Upper Palaeolithic. From 2011 to 2013 research recommenced to re-define the archaeo-stratigraphic succession, obtain absolute dates, and characterize the occupational patterns generating the archaeological assemblages. The revised sequence comprises three archaeological levels, dated to the 15th millenium calibrated BP, and therefore associated to the Final Upper Magdalenian. The raw materials exploited, the assemblage composition and reduction sequences, define the occupational pattern as short duration or low intensity one. Balma de la Vall represents one of the first examples of human occupation of the Catalan Prelittoral Range., [ES]: Este artículo presenta los trabajos realizados en el yacimiento de la Balma de la Vall (Montblanc, Tarragona). Las primeras excavaciones, a inicios de los 1980, identificaron distintos niveles de ocupación humana relacionados con el Paleolítico superior final. Entre los años 2011-2013 la excavación se reemprendió con los objetivos de definir la sucesión arqueo-estratigráfica, obtener dataciones absolutas, y caracterizar el tipo de ocupaciones que generaron los conjuntos arqueológicos. De esta forma, hemos identificado una secuencia que comprende tres niveles arqueológicos, con dataciones que los asocian al XV milenio cal BP, y por tanto al Magdaleniense superior final. Los análisis de las materias primas líticas empleadas, la composición de los conjuntos y las secuencias de reducción permiten definir las ocupaciones como cortas o de baja intensidad. La Balma de la Vall constituye así una de las primeras evidencias de ocupación humana de la Cordillera Prelitoral Catalana., Estos trabajos se enmarcan en el proyecto 2014/100574 de la Generalitat de Cataluña, el grupo de investigación SGR2014/901 (AGAUR) y los proyectos CGL2016-80000-P y CGL2015-65387-C3-1-P (MINECO/FEDER) y han sido financiados en parte por el Ayuntamiento de Montblanc. M.S. es beneficiaria de un contrato Post-Doctoral, SSHRC (Canadá) asociado al proyecto ”Stone Tools, Diet and Sociality”, J.I.M. de uno Post-Doctoral Juan de la Cierva-Formación; J.L.F-M de una beca FPI del MINECO/FSE (BES-2015-074931) vinculada al proyecto HAR 2014-55131; G.G-A. de una beca Pre-Doctoral APIF y D.L. de una beca Pre-Doctoral AGAUR/FSE (2018-FI-B-00364).