|Id||Title||Authors||Abstract||Picture||Thematic fields||Recommender||Reviewers▼||Submission date|
19 Jun 2020
Platforms of Palaeolithic knappers reveal complex linguistic abilitiesCédric Gaucherel and Camille Noûs https://doi.org/10.31233/osf.io/wn5za
The means of complexity in a lithic reduction sequenceRecommended by Marta Arzarello based on reviews by Antony Borel and 1 anonymous reviewer
The paper entitled “Platforms of Palaeolithic knappers reveal complex linguistic abilities”  submitted by C. Gaucherel and C. Noûs represents an interesting reflection about the possibilities to detect the human cognitive abilities in relation to the lithic production.
The definition and the study of human cognitive abilities during the Lower Palaeolithic it has always been a complex field of investigation. The relation between the technical skills (lithic production) and the emergence of the linguistic abilities is not easy to investigate due to the difficulty of finding objective data to refer to. The proposition, made by C. Gaucherel and C. Noûs, of a formal grammar of knapping as a method to study the syntactical organisation of the reduction sequences, constitute a new and theoretical useful approach.
In order to effectively and precisely define the gestures linked to a specific reduction sequence, for example that of the handaxes shaping, a very large number of variables should be taken into consideration (morphology and quality of the raw material, experience of the knapper, context, percussion technique, forecast of use of the handaxe, etc.). But since a simplification, that brings more elements than the classic one [2,3] is needed, the “action grammar approach” can be a good instrument to detect the common element in a shaping reduction sequence. Furthermore, one of the advantages of the proposed methodology lies in the fact that the definition of the different STs (Stone Technology) can be done according to the technological specific characteristics to be studied and to the type of instrument produced.
The deconstruction of knapping sequences could help to detect the degree of complexity of the different steps of the reduction sequences also thanks to the identification of the sub-actions types. The increasing/decreasing of complexity is a very complicate concept in lithic technology. Since at the base of the lithic production there are two basic concepts (angle between the striking platform and the debitage surface - convexity of the debitage/façonnage surface) which are simply declined in an increasingly complex way, it is not easy to define uniquely in what exactly consists the increase in complexity. The approach proposed in the paper “Platforms of Palaeolithic knappers reveal complex linguistic abilities” can help to have new evidences, according to the identification of the required cognitive abilities.
The proposed example of formal grammar still needs to be confirmed on archaeological collections, but it is probable that a practical application will allow to further develop the methodology and possibly to highlight additional possibilities of the approach.
 Gaucherel, C. and Noûs C. (2020). Platforms of Palaeolithic knappers reveal complex linguistic abilities. Paleorxiv, wn5za, ver. 6 peer-reviewed and recommended by PCI Archaeology. doi: 10.31233/osf.io/wn5za
|Platforms of Palaeolithic knappers reveal complex linguistic abilities||Cédric Gaucherel and Camille Noûs||<p>Recent studies in cognitive neurosciences have postulated a possible link between manual praxis such as tool-making and human languages. If confirmed, such a link opens significant avenues towards the study of the evolution of natural languages...||Africa, Ancient Palaeolithic, Lithic technology, Theoretical archaeology||Marta Arzarello||2020-04-30 14:18:26||View|
20 Dec 2020
For our world without sound. The opportunistic debitage in the Italian context: a methodological evaluation of the lithic assemblages of Pirro Nord, Cà Belvedere di Montepoggiolo, Ciota Ciara cave and Riparo Tagliente.Marco Carpentieri, Marta Arzarello https://doi.org/10.31219/osf.io/2ptjb
Investigating the opportunistic debitage – an experimental approachRecommended by Alice Leplongeon based on reviews by David Hérisson and 1 anonymous reviewer
The paper “For our world without sound. The opportunistic debitage in the Italian context: a methodological evaluation of the lithic assemblages of Pirro Nord, Cà Belvedere di Montepoggiolo, Ciota Ciara cave and Riparo Tagliente”  submitted by M. Carpentieri and M. Arzarello is a welcome addition to a growing number of studies focusing on flaking methods showing little to no core preparation, e.g., [2–4]. These flaking methods are often overlooked or seen as ‘simple’, which, in a Middle Palaeolithic context, sometimes leads to a dichotomy of Levallois vs. non-Levallois debitage (e.g., see discussion in ).
The authors address this topic by first providing a definition for ‘opportunistic debitage’, derived from the definition of the ‘Alternating Surfaces Debitage System’ (SSDA, ). At the core of the definition is the adaptation to the characteristics (e.g., natural convexities and quality) of the raw material. This is one main challenge in studying this type of debitage in a consistent way, as the opportunistic debitage leads to a wide range of core and flake morphologies, which have sometimes been interpreted as resulting from different technical behaviours, but which the authors argue are part of a same ‘methodological substratum’ .
This article aims to further characterise the ‘opportunistic debitage’. The study relies on four archaeological assemblages from Italy, ranging from the Lower to the Upper Pleistocene, in which the opportunistic debitage has been recognised. Based on the characteristics associated with the occurrence of the opportunistic debitage in these assemblages, an experimental replication of the opportunistic debitage using the same raw materials found at these sites was conducted, with the aim to gain new insights into the method. Results show that experimental flakes and cores are comparable to the ones identified as resulting from the opportunistic debitage in the archaeological assemblage, and further highlight the high versatility of the opportunistic method.
One outcome of the experimental replication is that a higher flake productivity is noted in the opportunistic centripetal debitage, along with the occurrence of 'predetermined-like' products (such as déjeté points). This brings the authors to formulate the hypothesis that the opportunistic debitage may have had a role in the process that will eventually lead to the development of Levallois and Discoid technologies. How this articulates with for example current discussions on the origins of Levallois technologies (e.g., [6–8]) is an interesting research avenue. This study also touches upon the question of how the implementation of one knapping method may be influenced by the broader technological knowledge of the knapper(s) (e.g., in a context where Levallois methods were common vs a context where they were not). It makes the case for a renewed attention in lithic studies for flaking methods usually considered as less behaviourally significant.
 Carpentieri M, Arzarello M. 2020. For our world without sound. The opportunistic debitage in the Italian context: a methodological evaluation of the lithic assemblages of Pirro Nord, Cà Belvedere di Montepoggiolo, Ciota Ciara cave and Riparo Tagliente. OSF Preprints, doi:10.31219/osf.io/2ptjb
 Bourguignon L, Delagnes A, Meignen L. 2005. Systèmes de production lithique, gestion des outillages et territoires au Paléolithique moyen : où se trouve la complexité ? Editions APDCA, Antibes, pp. 75–86. Available: https://halshs.archives-ouvertes.fr/halshs-00447352
 Arzarello M, De Weyer L, Peretto C. 2016. The first European peopling and the Italian case: Peculiarities and “opportunism.” Quaternary International, 393: 41–50. doi:10.1016/j.quaint.2015.11.005
 Vaquero M, Romagnoli F. 2018. Searching for Lazy People: the Significance of Expedient Behavior in the Interpretation of Paleolithic Assemblages. J Archaeol Method Theory, 25: 334–367. doi:10.1007/s10816-017-9339-x
 Forestier H. 1993. Le Clactonien : mise en application d’une nouvelle méthode de débitage s’inscrivant dans la variabilité des systèmes de production lithique du Paléolithique ancien. Paléo, 5: 53–82. doi:10.3406/pal.1993.1104
 Moncel M-H, Ashton N, Arzarello M, Fontana F, Lamotte A, Scott B, et al. 2020. Early Levallois core technology between Marine Isotope Stage 12 and 9 in Western Europe. Journal of Human Evolution, 139: 102735. doi:10.1016/j.jhevol.2019.102735
 White M, Ashton N, Scott B. 2010. The emergence, diversity and significance of the Mode 3 (prepared core) technologies. Elsevier. In: Ashton N, Lewis SG, Stringer CB, editors. The ancient human occupation of Britain. Elsevier. Amsterdam, pp. 53–66.
 White M, Ashton N. 2003. Lower Palaeolithic Core Technology and the Origins of the Levallois Method in North‐Western Europe. Current Anthropology, 44: 598–609. doi:10.1086/377653
|For our world without sound. The opportunistic debitage in the Italian context: a methodological evaluation of the lithic assemblages of Pirro Nord, Cà Belvedere di Montepoggiolo, Ciota Ciara cave and Riparo Tagliente.||Marco Carpentieri, Marta Arzarello||<p>The opportunistic debitage, originally adapted from Forestier’s S.S.D.A. definition, is characterized by a strong adaptability to local raw material morphology and its physical characteristics and it is oriented towards flake production. Its mo...||Ancient Palaeolithic, Lithic technology, Middle Palaeolithic||Alice Leplongeon||2020-07-23 14:26:04||View|
17 Dec 2020
Experimentation preceding innovation in a MIS5 Pre-Still Bay layer from Diepkloof Rock Shelter (South Africa): emerging technologies and symbolsGuillaume Porraz, John E. Parkington, Patrick Schmidt, Gérald Bereiziat, Jean-Philip Brugal, Laure Dayet, Marina Igreja, Christopher E. Miller, Viola C. Schmid, Chantal Tribolo, Aurore Val, Christine Verna, Pierre-Jean Texier https://doi.org/10.32942/osf.io/ch53r
Experimentation as a driving force for innovation in the Pre-Still Bay from Southern AfricaRecommended by Anne Delagnes based on reviews by Francesco d'Errico, Enza Elena Spinapolice and Kathryn Ranhorn
The article submitted by Guillaume Porraz et al.  shed light on the evolutionary changes recorded during the Pre-Still Bay Lynn stratigraphic unit (SU) from Diepkloof (Southern Africa). It promotes a multi-proxy and integrative approach based on a set of innovative behaviors, such as the engraving of geometric forms, silcrete heat- treatment, the use of adhesive, bladelet and bifacial tools production. This approach is not so common in Middle Stone Age (MSA) studies and makes a lot of sense for discussing the mechanisms that have fostered later innovations during the Still Bay and Howiesons Poort periods. The various innovations that emerge synchronously in this layer contrast with earlier innovations which appear as isolated phenomena in the MSA archaeological record. The strong inventiveness documented in Lynn SU is reported to a phase of experimentation for testing new ideas, new behaviors that would have played a crucial role for the emergence of the Still Bay in a context of socio-economic transformation.
The data presented in this article broadens the scope of two previous articles [2-3] based on a more representative record, collected on an area of 3,5 m² opposed to 2 m² previously, and on the first presentation and description of an engraved bone with a rhomboid pattern. Macro- and microscopic analyses together with the analysis of the distribution of the engraved lines argue convincingly for an intentional engraving. This article constitutes a key contribution to the question of HOW emerged modern cultures in Southern Africa, while calling for further research related to sites’ function, environment and local resources to address the ever-debated question of WHY the MSA groups from Southern Africa developed such unprecedented inventiveness. It makes no doubt that this article deserves recommendation by PCI Archaeology.
 Porraz, G., Schmidt, P., Bereiziat, G., Brugal, J.Ph., Dayet, L., Igreja, M., Miller, C.E., Viola, C., Tribolo, C., Val, A., Verna, C., Texier, P.J. 2020. Experimentation preceding innovation in a MIS5 Pre-Still Bay layer from Diepkloof Rock Shelter (South Africa): emerging technologies and symbols. 10.32942/osf.io/ch53r
 Porraz, G., Texier, P.J., Archer, W., Piboule, M., Rigaud, J.P, Tribolo, C. 2013. Technological successions in the Middle Stone Age sequence of Diepkloof Rock Shelter, Western Cape, South Africa. Journal of Archaeological Science 40, 3376–3400. 10.1016/j.jas.2013.02.012
 Porraz, G., Texier, J.P. Miller, C.E., 2014. Le complexe bifacial Still Bay et ses modalités d’émergence à l’abri Diepkloof (Middle Stone Age, Afrique du Sud). In: XXVIIème Congrès Préhistorique de France, Transitions, Ruptures et Continuité en Préhistoire. Mémoires de la Société Préhistorique Française, 155–175.
|Experimentation preceding innovation in a MIS5 Pre-Still Bay layer from Diepkloof Rock Shelter (South Africa): emerging technologies and symbols||Guillaume Porraz, John E. Parkington, Patrick Schmidt, Gérald Bereiziat, Jean-Philip Brugal, Laure Dayet, Marina Igreja, Christopher E. Miller, Viola C. Schmid, Chantal Tribolo, Aurore Val, Christine Verna, Pierre-Jean Texier||<p>In South Africa, key technologies and symbolic behaviors develop as early as the later Middle Stone Age in MIS5. These innovations arise independently in various places, contexts and forms, until their full expression during the Still Bay and t...||Africa, Lithic technology, Middle Palaeolithic, Symbolic behaviours||Anne Delagnes||2020-08-04 09:13:27||View|
08 Feb 2021
A 115,000-year-old expedient bone technology at Lingjing, Henan, ChinaLuc Doyon, Zhanyang Li, Hua Wang, Lila Geis, Francesco d’Errico https://doi.org/10.31235/osf.io/68xpz
A step towards the challenging recognition of expedient bone toolsRecommended by Camille Daujeard based on reviews by Delphine Vettese, Jarod Hutson and 1 anonymous reviewer
This article by L. Doyon et al.  represents an important step to the recognition of bone expedient tools within archaeological faunal assemblages, and therefore deserves publication.
In this work, the authors compare bone flakes and splinters experimentally obtained by percussion (hammerstone and anvil technique) with fossil ones coming from the Palaeolithic site of Lingjing in China. Their aim is to find some particularities to help distinguish the fossil bone fragments which were intentionally shaped, from others that result notably from marrow extraction. The presence of numerous (>6) contiguous flake scars and of a continuous size gradient between the lithics and the bone blanks used, appear to be two valuable criteria for identifying 56 bone elements of Lingjing as expedient bone tools. The latter are present alongside other bone tools used as retouchers .
Another important point underlined by this study is the co-occurrence of impact and flake scars among the experimentally broken specimens (~90%), while this association is seldom observed on archaeological ones. Thus, according to the authors, a low percentage of that co-occurrence could be also considered as a good indicator of the presence of intentionally shaped bone blanks.
About the function of these expedient bone tools, the authors hypothesize that they were used for in situ butchering activities. However, future experimental investigations on this question of the function of these tools are expected, including an experimental use wear program.
Finally, highlighting the presence of such a bone industry is of importance for a better understanding of the adaptive capacities and cultural practices of the past hominins. This work therefore invites all taphonomists to pay more attention to flake removal scars on bone elements, keeping in mind the possible existence of that type of bone tools. In fact, being able to distinguish between bone fragments due to marrow recovery and bone tools is still a persistent and important issue for all of us, but one that deserves great caution.
 Doyon, L., Li, Z., Wang, H., Geis, L. and d'Errico, F. 2021. A 115,000-year-old expedient bone technology at Lingjing, Henan, China. Socarxiv, 68xpz, ver. 4 peer-reviewed and recommended by PCI Archaeology. https://doi.org/10.31235/osf.io/68xpz
 Doyon, L., Li, Z., Li, H., and d’Errico, F. 2018. Discovery of circa 115,000-year-old bone retouchers at Lingjing, Henan, China. Plos one, 13(3), https://doi.org/10.1371/journal.pone.0194318.
|A 115,000-year-old expedient bone technology at Lingjing, Henan, China||Luc Doyon, Zhanyang Li, Hua Wang, Lila Geis, Francesco d’Errico||<p>Activities attested since at least 2.6 Myr, such as stone knapping, marrow extraction, and woodworking may have allowed early hominins to recognize the technological potential of discarded skeletal remains and equipped them with a transferable ...||Asia, Middle Palaeolithic, Osseous industry, Taphonomy, Zooarchaeology||Camille Daujeard||2020-11-01 11:09:13||View|
28 Feb 2021
A database of lapidary artifacts in the Caribbean for the Ceramic AgeAlain Queffelec, Pierrick Fouéré, Jean-Baptiste Caverne https://osf.io/preprints/socarxiv/7dq3b/
Open data on beads, pendants, blanks from the Ceramic Age CaribbeanRecommended by Ben Marwick based on reviews by Clarissa Belardelli, Stefano Costa, Robert Bischoff and Li-Ying Wang
The paper 'A database of lapidary artifacts in the Caribbean for the Ceramic Age' by Queffelec et al.  presents a description of a dataset of nearly 5000 lapidary artefacts from over 100 sites. The data are dominated by beads and pendants, which are mostly made from Diorite, Turquoise, Carnelian, Amethyst, and Serpentine. The raw material data is especially valuable as many of these are not locally available on the island. This holds great potential for exchange network analysis. The data may be especially useful for investigating one of the fundamental questions of this region: whether the Cedrosan and Huecan are separate, little related developments, with different origins, or variants or a single tradition .
In addition to metric and technological details about the artefacts, the data include a variety of locational details, including coordinates, distance to coast, and altitude. This enables many opportunities for future spatial analysis and geostatistical modelling to understand human behaviours relating to ornament production, use, and discard. I recommend the authors make a minor revision to Table 1 (spatial coverage of the dataset) to make the column with the citations conform to the same citation style used in the rest of the text.
I warmly commend the authors for making transparency and reproducibility a priority when preparing their manuscript. Their use of the R Markdown format for writing reproducible, dynamic documents  is highly impressive. This is an excellent example for others in the international archaeological science community to follow. The paper is especially useful for researchers who are new to R and R Markdown because of the elegant and accessible way the authors document their research here.
 Queffelec, A., Fouéré, P. and Caverne, J.-B. 2021. A database of lapidary artifacts in the Caribbean for the Ceramic Age. SocArXiv, 7dq3b, ver. 4 Peer-reviewed and recommended by PCI Archaeology. https://doi.org/10.31235/osf.io/7dq3b
 Reed, J. A. and Petersen, J. B. 2001. A comparison of Huecan and Cedrosan Saladoid ceramics at the Trants site, Montserrat. In Proceedings of the XVIIIth International Congress for Caribbean Archaeology (pp. 253-267).
 Marwick, B. 2017. Computational Reproducibility in Archaeological Research: Basic Principles and a Case Study of Their Implementation. Journal of Archaeological Method and Theory 24, 424–450. https://doi.org/10.1007/s10816-015-9272-9
|A database of lapidary artifacts in the Caribbean for the Ceramic Age||Alain Queffelec, Pierrick Fouéré, Jean-Baptiste Caverne||<p>Lapidary artifacts show an impressive abundance and diversity during the Ceramic period in the Caribbean islands, especially at the beginning of this period. Most of the raw materials used in this production do not exist naturally on the island...||Neolithic, North America, Raw materials, South America, Spatial analysis, Symbolic behaviours||Ben Marwick||2020-11-13 23:52:34||View|
24 Jun 2021
The strength of parthood ties. Modelling spatial units and fragmented objects with the TSAR method – Topological Study of Archaeological RefittingSébastien Plutniak https://osf.io/q2e69
A practical computational approach to stratigraphic analysis using conjoinable material culture.Recommended by Hector A. Orengo based on reviews by Robert Bischoff, Matthew Peeples and 1 anonymous reviewer
The paper by Plutniak  presents a new method that uses refitting to help interpret stratigraphy using the topological distribution of conjoinable material culture. This new method opens up new avenues to the archaeological use of network analysis but also to assess the integrity of interpreted excavation layers. Beyond its evident applicability to standard excavation practice, the paper presents a series of characteristics that exemplify archaeological publication best practices and, as someone more versed in computational than in refitting studies I would like to comment upon.
It was no easy task to find adequate reviewers for this paper as it combines techniques and expertise that are not commonly found together in individual researchers. However, Plutniak, with help from three reviewers, particularly M. Peeples, a leading figure in archaeological applications of network science, makes a considerable effort to be accessible to non-specialist archaeologists. The core Topological Study of Archaeological Refitting (TSAR) method is freely accessible as the R package archeofrag, which is available at the Comprehensive R Archive Network (https://CRAN.R-project.org/package=archeofrag) that can be applied without the need to understand all its mathematical, graph theory and coding aspects. Beside these, an online interface including test data has been provided (https://analytics.huma-num.fr/Sebastien.Plutniak/archeofrag/), which aims to ease access to the method to those archaeologists inexperienced with R. Finally, supplementary material showing how to use the package and evaluating its potential through excellent examples is provided as both pdf and Rmw (Sweave) files. This is an important companion for the paper as it allows a better understanding of the methods presented in the paper and its practical application.
The author shows particular care in testing the potential and capabilities of the method. For example, a function is provided “frag.observer.failure” to test the robustness of the edge count method against the TSAR method, which is able to prove that TSAR can deal well with incomplete information. As a further step in this direction both simulated and real field-acquired data are used to test the method which further proves that archeofrag is not only able to quantitatively assess the mixture of excavated layers but to propose meaningful alternatives, which no doubt will add an increased methodological consistency and thoroughness to previous quantitative approaches to material refitting work, even when dealing with very complex stratigraphies.
All in all, this paper makes an important contribution to core archaeological practice through the use of innovative, reproducible and accessible computational methods. I fully endorse it for the conscious and solid methods it presents but also for its adherence to open publication practices. I hope that it can become of standard use in the reconstruction of excavated stratigraphical layers through conjoinable material culture.
 Plutniak, S. 2021. The Strength of Parthood Ties. Modelling Spatial Units and Fragmented Objects with the TSAR Method – Topological Study of Archaeological Refitting. OSF Preprints, q2e69, ver. 3 Peer-reviewed and recommended by PCI Archaeology. https://doi.org/10.31219/osf.io/q2e69.
|The strength of parthood ties. Modelling spatial units and fragmented objects with the TSAR method – Topological Study of Archaeological Refitting||Sébastien Plutniak||<p>Refitting and conjoinable pieces have long been used in archaeology to assess the consistency of discrete spatial units, such as layers, and to evaluate disturbance and post-depositional processes. The majority of current methods, despite their...||Computational archaeology, Taphonomy||Hector A. Orengo||2021-01-14 18:31:01||View|
15 Aug 2021
Ran-thok and Ling-chhom: indigenous grinding stones of Shertukpen tribes of Arunachal Pradesh, IndiaNorbu Jamchu Thongdok, Gibji Nimasow & Oyi Dai Nimasow https://doi.org/10.5281/zenodo.5118675
An insight into traditional method of food production in IndiaRecommended by Otis Crandell based on reviews by Antony Borel, Atefeh Shekofteh, Andrea Squitieri, Birgül Ögüt, Atefe Shekofte and 1 anonymous reviewer
This paper  covers an interesting topic in that it presents through ethnography an insight into a traditional method of food production which is gradually declining in use. In addition to preserving traditional knowledge, the ethnographic study of grinding stones has the potential for showing how similar tools may have been used by people in the past, particularly from the same geographic region.
 Thongdok Norbu J., Nimasow Gibji, Nimasow Oyi D. (2021) Ran-thok and Ling-chhom: indigenous grinding stones of Shertukpen tribes of Arunachal Pradesh, India. Zenodo, 5118675, ver. 4 peer-reviewed and recommended by PCI Archaeo. doi: https://doi.org/10.5281/zenodo.5118675
|Ran-thok and Ling-chhom: indigenous grinding stones of Shertukpen tribes of Arunachal Pradesh, India||Norbu Jamchu Thongdok, Gibji Nimasow & Oyi Dai Nimasow||<p style="text-align: justify;">The Shertukpens are an Indigenous tribal group inhabiting the western and southern parts of Arunachal Pradesh, Northeast India. They are accomplished carvers of carving wood and stone. The paper aims to document the...||Antiquity, Asia, Environmental archaeology, Lithic technology, Peopling, Raw materials||Otis Crandell||2021-02-10 10:26:12||View|
11 Jan 2022
Tektite geoarchaeology in mainland Southeast AsiaBen Marwick, Son Thanh Pham, Rachel Brewer, Li-Ying Wang https://doi.org/10.31235/osf.io/93fpa
Tektites as chronological markers: after careful geoarchaeological validation only!Recommended by Alain Queffelec and Shanti Pappu based on reviews by Sheila Mishra, Toshihiro Tada, Mike Morley and 1 anonymous reviewer
Tektites, a naturally occurring glass produced by major cosmic impacts and ejected at long distances, are known from five impacts worldwide . The presence of this impact-generated glass, which can be dated in the same way as a volcanic rock, has been used to date archaeological sites in several regions of the world. This paper by Marwick and colleagues  reviews and adds new data on the use and misuse of this specific material as a chronological marker in Australia, East and Southeast Asia, where an impact dated to 0.78 Ma created and widely distributed tektites. This material, found in archaeological excavations in China, Laos, Thaïland, Australia, Borneo, and Vietnam, has been used to date layers containing lithic artifacts, sometimes creating a strong debate about the antiquity of the occupation and lithic production in certain regions.
The review of existing data shows that geomorphological data and stratigraphic integrity can be questioned at many sites that have yielded tektites. The new data provided by this paper for five archaeological sites located in Vietnam confirm that many deposits containing tektites are indeed lag deposits and that these artifacts, thus in secondary position, cannot be considered to date the layer. This study also emphasizes the general lack of other dating methods that would allow comparison with the tektite age. In the Vietnamese archaeological sites presented here, discrepancies between methods, and the presence of historical artifacts, confirm that the layers do not share similar age with the cosmic impact that created the tektites.
Based on this review and these new results, and following previous propositions , Marwick and colleagues conclude that, if tektites can be used as chronological markers, one has to prove that they are in situ. They propose that geomorphological assessment of the archaeological layer as primary deposit must first be attained, in addition to several parameters of the tektites themselves (shape, size distribution, chemical composition). Large error can be made by using only tektites to date an archaeological layer, and this material should not be used solely due to risks of high overestimation of the age of the archaeological production.
 Rochette, P., Beck, P., Bizzarro, M., Braucher, R., Cornec, J., Debaille, V., Devouard, B., Gattacceca, J., Jourdan, F., Moustard, F., Moynier, F., Nomade, S., Reynard, B. (2021). Impact glasses from Belize represent tektites from the Pleistocene Pantasma impact crater in Nicaragua. Communications Earth & Environment, 2(1), 1–8, https://doi.org/10.1038/s43247-021-00155-1
 Marwick, B., Son, P. T., Brewer, R., Wang, L.-Y. (2022). Tektite geoarchaeology in mainland Southeast Asia. SocArXiv, 93fpa, ver. 6 peer-reviewed and recommended by PCI Archaeology, https://doi.org/10.31235/osf.io/93fpa.
 Tada, T., Tada, R., Chansom, P., Songtham, W., Carling, P. A., Tajika, E. (2020). In Situ Occurrence of Muong Nong-Type Australasian Tektite Fragments from the Quaternary Deposits near Huai Om, Northeastern Thailand. Progress in Earth and Planetary Science 7(1), 1–15, https://doi.org/10.1186/s40645-020-00378-4
|Tektite geoarchaeology in mainland Southeast Asia||Ben Marwick, Son Thanh Pham, Rachel Brewer, Li-Ying Wang||<p>Tektites formed by an extraterrestrial impact event in Southeast Asia at 0.78 Ma have been found in geological contexts and archaeological sites throughout Australia, East and Southeast Asia. At some archaeological sites, especially in Bose Bas...||Asia, Geoarchaeology||Alain Queffelec||2021-08-14 18:04:18||View|
01 Dec 2021
A closer look at an eroded dune landscape: first functional insights into the Federmessergruppen site of Lommel-MaatheideSonja Tomasso, Dries Cnuts, Justin Coppe, Marijn Van Gils, Ferdi Geerts, Marc De Bie, Veerle Rots https://doi.org/10.31219/osf.io/pf3sm
Potential of a large-scale functional analysis to reconstructing past human activities at the Final Palaeolithic site of Lommel-MaatheideRecommended by Marta Arzarello and Alice Leplongeon based on reviews by Gabriele Luigi Francesco Berruti and Ana Abrunhosa
The paper “A closer look at an eroded dune landscape: first functional insights into the Federmessergruppen site of Lommel-Maatheide”  focuses on the final Palaeolithic (Federmesser) site of Lommel-Maatheide. Federmesser sites from northern Belgium such as Lommel-Maatheide, Meer and Rekem, show evidence for dense human occupation of specific areas located on top of Tardiglacial dunes nearby water bodies . Preserved spatial distribution of finds at the sites suggest different activity areas and the presence of habitat structures . However, because of the low organic preservation at the sites, functional analyses of lithic assemblages have the potential to significantly contribute to the spatial organisation of activities at these sites. This study by Tomasso et al. , represents an excellent example of a large-scale integrated approach to the study of lithic industries. The article undoubtedly demonstrates the potential of the proposed methodology and the reliability of the results obtained.
The article explores two different aspects (linked and excellently interconnected here): the possibility to apply use wear, residue and fracture analyses, on lithic assemblages affected by taphonomical alterations and to study lithic assemblages from dune landscapes.
The study allows to answer differentiated questions: what is the influence of taphonomical alterations on use wear analysis? How do excavation methods impact the formation of use wear and the preservation of residues? Can we recognize distinct domestic activities? The article also provides an interesting hypothesis about hunting activities and propulsion methods.
The applied methodology is effectively interdisciplinary and innovative. It demonstrates how a truly integrated and articulated approach can represent the turning point for going beyond a mainly descriptive dimension to move towards a real understanding of the sites.
Studies dedicated to the analysis of the propulsion mode are not very frequent, but they are surely very important to better understand human behaviour . Here, the methodology developed for the evaluation of the propulsion mode represent an important starting point for the definition of a new approach. Morphological and morphometrical analysis are integrated to the evaluation of the mechanical stress, to fracture delineations and to the hafting system (the latter defined on experimental basis).
This article therefore underlines the potential of combining different approaches to functional analysis associated with a ‘tailored’ reference collection and applying them to a high number of artefacts for reconstructing past human activities involving materials that are otherwise not preserved in these contexts.
 Tomasso, S., Cnuts, D., Coppe, J., Geerts, F., Gils, M.V., Bie, M.D., Rots, V. (2021). A closer look at an eroded dune landscape: first functional insights into the Federmessergruppen site of Lommel-Maatheide. https://doi.org/10.31219/osf.io/pf3sm, ver 3 peer-reviewed and recommended by PCI Archaeology.
 De Bie, M., Van Gils, M. (2006). Les habitats des groupes à Federmesser (aziliens) dans le Nord de la Belgique. Bulletin de la Société préhistorique française, 103, 781–790.
 Coppe, J., Lepers, C., Clarenne, V., Delaunois, E., Pirlot, M. and Rots V. (2019). Ballistic Study Tackles Kinetic Energy Values of Palaeolithic Weaponry. Archaeometry, (61)4, 933-956. https://doi.org/10.1111/arcm.12452
|A closer look at an eroded dune landscape: first functional insights into the Federmessergruppen site of Lommel-Maatheide||Sonja Tomasso, Dries Cnuts, Justin Coppe, Marijn Van Gils, Ferdi Geerts, Marc De Bie, Veerle Rots||<p>The vast Federmessergruppen site of Lommel-Maatheide, which is located in the Campine region (Northern Belgium), revealed the presence of numerous Final Palaeolithic concentrations situated on a large Late Glacial sand ridge on the northern edg...||Environmental archaeology, Landscape archaeology, Lithic technology, Traceology, Upper Palaeolithic||Marta Arzarello||2021-09-14 17:04:38||View|
17 Jun 2022
Light in the Cave: Opal coating detection by UV-light illumination and fluorescence in a rock art context. Methodological development and application in Points Cave (Gard, France)Marine Quiers, Claire Chanteraud, Andréa Maris-Froelich, Émilie Chalmin-Aljanabi, Stéphane Jaillet, Camille Noûs, Sébastien Pairis, Yves Perrette, Hélène Salomon, Julien Monney https://hal.archives-ouvertes.fr/hal-03383193v5
New method for the in situ detection and characterisation of amorphous silica in rock art contextsRecommended by Aitor Ruiz-Redondo based on reviews by Alain Queffelec, Laure Dayet and 1 anonymous reviewer
Silica coating developed in cave art walls had an impact in the preservation of the paintings themselves. Despite it still exists a controversy about whether or not the effects contribute to the preservation of the artworks; it is evident that identifying these silica coatings would have an impact to assess the taphonomy of the walls and the paintings preserved on them. Unfortunately, current techniques -especially non-invasive ones- can hardly address amorphous silica characterisation. Thus, its presence is often detected on laboratory observations such as SEM or XRD analyses. In the paper “Light in the Cave: Opal coating detection by UV-light illumination and fluorescence in a rock art context - Methodological development and application in Points Cave (Gard, France)”, Quiers and collaborators propose a new method for the in situ detection and characterisation of amorphous silica in a rock art context based on UV laser-induced fluorescence (LIF) and UV illumination .
The results from both methods presented by the authors are convincing for the detection of U-silica mineralisation (U-opal in the specific case of study presented). This would allow access to a fast and cheap method to identify this kind of formations in situ in decorated caves. Beyond the relationship between opal coating and the preservation of the rock art, the detection of silica mineralisation can have further implications. First, it can help to define spot for sampling for pigment compositions, as well as reconstruct the chronology of the natural history of the caves and its relation with the human frequentation and activities. In conclusion, I am glad to recommend this original research, which offers a new approach to the identification of geological processes that affect -and can be linked with- the Palaeolithic cave art.
 Quiers, M., Chanteraud, C., Maris-Froelich, A., Chalmin-Aljanabi, E., Jaillet, S., Noûs, C., Pairis, S., Perrette, Y., Salomon, H., Monney, J. (2022) Light in the Cave: Opal coating detection by UV-light illumination and fluorescence in a rock art context. Methodological development and application in Points Cave (Gard, France). HAL, hal-03383193, ver. 5 peer-reviewed and recommended by Peer community in Archaeology. https://hal.archives-ouvertes.fr/hal-03383193v5
|Light in the Cave: Opal coating detection by UV-light illumination and fluorescence in a rock art context. Methodological development and application in Points Cave (Gard, France)||Marine Quiers, Claire Chanteraud, Andréa Maris-Froelich, Émilie Chalmin-Aljanabi, Stéphane Jaillet, Camille Noûs, Sébastien Pairis, Yves Perrette, Hélène Salomon, Julien Monney||<p style="text-align: justify;">Silica coatings development on rock art walls in Points Cave questions the analytical access to pictorial matter specificities (geochemistry and petrography) and the rock art conservation state in the context of pig...||Archaeometry, Europe, Rock art, Taphonomy, Upper Palaeolithic||Aitor Ruiz-Redondo||2021-10-25 11:12:48||View|