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- Analysis of organic residues in the context of the middle bronze age in the northwestern Iberian Peninsula: the case of the Cova da Moura funerary monument (Viana do Castelo, nw Portugal)Publication . Oliveira, Nuno; Oliveira, César; Bettencourt, Ana M. S.; Costa, CláudiaThis paper presents and discusses the results of chromatographic analyses conducted on the contents of a ceramic pot recovered from Cova da Moura, a coastal funerary context located on the western slope of the Serra de Santa Luzia in Carreço, within the municipality and district of Viana do Castelo, Northwest Portugal. The site was excavated in 1931 by Abel Viana, who uncovered a monument beneath a tumulus that concealed a cluster of granite outcrops with numerous cavities (tafoni). Depositional activities in these cavities revealed several artifacts, including fragments of various ceramic containers, metal and glass objects, knapped and polished stone tools, animal remains, a diverse assemblage of plant-derived charcoal, and at least one anthropomorphic stele. The materials exhibit a wide chronological range, with the earliest occupation dating from the Late Middle Bronze Age (circa 15th-14th century BCE) and the most recent from the Late Iron Age. Among these finds was a fragmented ceramic pot containing organic residues at its internal base, dated from the regional Bronze Age. Chromatographic analysis of these residues identified traces of animal meat, possibly from monogastric species, and plant oils, both of which appear to have been exposed to high temperatures. This study represents the first application of organic chemical analysis to a ceramic vessel from a plausible Middle Bronze Age funerary context in Northwestern Portugal. The findings suggest the presence of commensal rituals or the deposition of prepared meat offerings as part of funerary practices.
- Châtelperronian cultural diversity at its western limits: shell beads and pigments from La Roche-à-Pierrot, Saint-Césaire.Publication . Bachellerie, François; Gravina, Brad; Rigaud, Solange; Dayet, Laure; Thomas, Marc; Lebreton, Loïc; Morin, Eugène; Lesage, Camille; Falguères, Christophe; Bard, Edouard; Bahain, Jean-Jacques; Baillet, Mickaël; Beauval, Cédric; Bordes, Jean-Guillaume; Culioli, Gérald; Devièse, Thibaut; Flas, Damien; Garbé, Lisa; Guérin, Guillaume; Lacrampe-Cuyaubère, François; Lahaye, Christelle; Mallol, Carolina; Marot, Josserand; Maureille, Bruno; Michel, Alexandre; Muth, Xavier; Regniers, Olivier; Tartar, Elise; Teyssandier, Nicolas; Thibeault, Adrien; Todisco, Dominique; Tombret, Olivier; Rougier, Hélène; Crevecoeur, IsabelleThe timing and mechanisms underlying the gradual replacement of Neanderthal populations by groups have elicited heated debate for decades. The Châtelperronian of France and northern Spain has figured prominently in these discussions. While the Neanderthal authorship of this techno-complex is far less certain than previously thought, the Châtelperronian is now generally accepted as being among the first genuine Upper Paleolithic industries in Eurasia rather than a "transitional" stone tool technology. Here, we report the first association of shell beads with Châtelperronian artifacts from new excavations at the site of La-Roche-à-Pierrot, Saint-Césaire (France), supported by a multiproxy spatial analysis that incorporates site formation processes. Similar types of personal ornaments are unknown from Middle Paleolithic contexts. Comparable examples have, however, been recovered from contexts penecontemporaneous with the Châtelperronian in south-eastern Europe and around the Mediterranean. This hitherto undocumented combination of an early Upper Paleolithic industry and shell beads provides insights into cultural variability in western Europe and raises the question as to whether the makers of the Châtelperronian were influenced by or formed part of the earliest dispersals of into the region.
- Raised from the ashes: geoarchaeological perspectives on house burning practices in an iberian iron age villagePublication . Tomé, Laura; Blanco-González, Antonio; Iriarte, Eneko; Carrancho, Ángel; García-Redondo, Natalia; Sossa-Ríos, Santiago; Sánchez-Polo, Alejandra; Martín-Seijo, María; Mallol, CarolinaBurnt houses are a recurrent phenomenon in the prehistoric archaeological record, yet the specific processes behind their burning—likely varying across time and place—remain poorly understood. This study focuses on a thoroughly studied dwelling (House 1) from the Iberian Early Iron Age settlement of Cerro de San Vicente and investigates site formation processes associated with its burning. To achieve this, we applied a multi-proxy geoarchaeological approach, integrating archaeological soil micromorphology—including charcoal analysis on thin sections—, magnetic properties analyses, XRD, XRF, and GIS-based morphological and spatial analyses of mudbricks. Our results suggest that House 1 experienced a high temperature fire, reaching temperatures of up to ~700 ◦C, which destroyed its roof, burnt its walls, and generated an ash deposit rich in combustion residues. Shortly thereafter, the house was deliberately infilled with burnt reused mudbricks, recycled both from its dismantled walls and potentially other buildings across the settlement. This practice likely served to raise the level of the house to compensate for midden accumulation in the surrounding transit areas while providing a foundation for new construction phases. These findings suggest that construction materials were reused over time according to context-specific cultural rationales, potentially reflecting elements of a prehistoric circular economy. This research enhances our understanding of settlement and socio-cultural dynamics at Cerro de San Vicente, while contributing to broader archaeological discussions on the roles of prehistoric house burning practices.
- Functional analysis of the lithic assemblage of Gombore IB (Melka Kunture, Ethiopia): looking for traces of use, but finding post-depositional problemsPublication . Bello-Alonso, Patricia; Serodio, Andrea; Marreiros, JoaoEarly Stone Age (ESA) archaeological complexes pose significant challenges for traceological analysis due to the preservation conditions of their contexts. At Gombore I (Melka Kunture, Ethiopia), lithic materials attributed to Level B are often associated with flood-prone or riparian zones, and thus subject to post-depositional alterations such as aeolian abrasion and trampling. Additionally, the diversity and nature of raw materials, mainly volcanic rocks like obsidian and basalt, further complicate use-wear studies. In this study we present preliminary findings from the Gombore IB lithic assemblage, which is attributed to the ESA, with significant levels associated with the Acheulean technocomplex. Initial sampling, based on visual inspection, prioritized artefacts deemed suitable for traceology. However, macro- and microscopic analyses revealed extensive surface alterations, limiting the preservation of use-wear traces and rendering traditional analysis unviable. Our research therefore focused on developing a broader analytical framework which could use these preservation issues for interpretations on site formation processes in the archaeological record. By employing dedicated experimental protocols to compare with the archaeological assemblage, this study establishes an initial use-wear pattern associated with postdepositional alteration. The lithic assemblage from Gombore IB offers valuable insights, which we apply to interpret the site’s formation processes. These data, in conjunction with spatial analyses, yield promising results and highlight the value of integrating preservation assessments into traceological studies, emphasizing the importance of context in interpreting ESA archaeological records.
- Geoarchaeological insights into a Neolithic combustion feature from Abric del Xicotó (northeastern Iberia)Publication . Fernández-Palacios, Enrique; Égüez, Natalia; González-Olivares, Cynthia; Herrera-Herrera, Antonio V.; Mallol, Carolina; Mangado, Xavier; Sánchez de la Torre, MartaThe Neolithic was a period of important cultural transformations across different regions. Applying state-ofthe-art geoarchaeological techniques to archaeological sites from this period has shown to contribute relevant data on site formation processes and occupation dynamics. Combined microcontextual and biomolecular analysis of archaeological combustion features helps us approach fuel use, often associated to dung residues in Neolithic contexts, which offer an insight into herding strategies. Here, we present micromorphological, microremains (fecal spherulites, ash pseudomorphs, and phytoliths), and biomarker data (n-alkanes, fecal sterols, and bile acids) obtained from a Neolithic combustion feature at Abric del Xicoto´ (Alo` s de Balaguer, Lleida, Spain). Preliminary data shed light on the functionality of the combustion feature, the presence of husbandry activity at the rockshelter, and the nature of the animals and their diet. This research adds detail to the existing Neolithic archaeological record of the northeastern Iberian Peninsula.
- Archery technology in the neolithic: management of the mediterranean mixed forest and woodworking activities at La Marmotta (Italy)Publication . L, Caruso Fermé; Monteiro, Patrícia; V, Brizzi; M, Mineo; G, Remolins; N, Mazzucco; B, Morell; F, Gibaja J.Although Neolithic communities were characterized by an agricultural economy, the presence of bows in their archaeological record demonstrates the persistence of hunting activities. At La Marmotta, an underwater Early Neolithic site located in Lake Bracciano (Anguillara Sabazia, Italy), a considerable assemblage of preserved wooden tools was discovered some of them related to hunting activities demonstrating their reliance on woodland resources for technological purposes. Since wood was the main raw material for ancient bows, understanding how it was exploited is fundamental for reconstructing archery technology in prehistory. Here, we present the archaeobotanical analyses of 19 wooden bows found in La Marmotta. Taxonomic analysis identified the wood used as Carpinus sp. (9), Viburnum lantana (6), Alnus sp. (1), Cornus sp. (1), Fraxinus sp. (1), and evergreen Quercus sp. (1). The mechanical properties of these species are compatible with the crafting and use of bows although they are not the most usual wood, as shown by the archaeological record of Neolithic bows. This taxonomic diversity suggests that there was not a specific selection of wood based on mechanical/physical properties, which is coherent with La Marmotta wood acquisition modalities for the production of other tools and structures.
- Deciphering the diet of the iberian iynx: insights from taphonomic analysis of pleistocene coprolitesPublication . Rufà, Anna; Sanz, Montserrat; Daura, JoanPleistocene deposits often result from multiple and overlapping contributions. Carnivores play a significant role as bone accumulators in archaeological sites, but identifying the specific agent responsible for a particular accumulation can be challenging. Referential studies provide valuable insights into bone accumulation patterns, but they are based on modern collections and often fail to account for taphonomic biases associated with site formation processes. Here, we present, for the first time, a taphonomic study focused on fossilised Pleistocene Iberian lynx coprolites within the European context. The assemblage, dated to ca. 33 ky B.P., was recovered from layer III of Cova del Gegant, a site identified as a lynx den likely used for rearing cubs. This study is based on previous research at the site and analyses bone remains consumed by the Iberian lynx (Lynx pardinus), recovered from coprolites, to investigate their role in archaeological contexts. The findings are consistent with other lynx accumulations documented in literature, particularly regarding leporid remains. The anatomical proportions in this assemblage are more balanced than other types of accumulations, with a higher representation of cranial elements. Digestive damage is predominant, affecting most bones, especially at moderate and strong degrees. These results enhance our understanding of archaeological accumulation processes and highlight the role of lynxes as bone accumulators. The archaeological evidence from the site indicates that the Iberian lynx inhabited environments and climates that differ significantly from those currently observed. However, the present study suggests that its diet remained relatively consistent with that of contemporary Iberian populations.
- Early evidence of earthquake management through mobility and social network adjustments at Vale Boi (SW Iberia)Publication . Barbieri, Alvise; Sánchez-Martínez, Javier; Belmiro, Joana; Fernandes, Paulo; Galfi, Jovan; Horta, Pedro; Cascalheira, João; Bicho, NunoTectonic processes profoundly influenced the dispersal, evolution, and archaeological record of our Paleolithic ancestors. However, in-depth reconstructions of human resilience against seismic events come mostly from contexts dating to the last 13,000 years. Here, we present geophysical, geological, geochronological, and archaeological data from the openair site of Vale Boy in southwestern Iberia, revealing how foragers mitigated earthquake impacts between ~30,000 and 24,000 years ago. At Vale Boi, faulting formed sedimentary traps that were recurrently exploited by hunter-gatherers and periodically buried by rockfalls, likely triggered by ≥5.7 Mw earthquakes. Despite seismic destruction, hunter-gatherers repeatedly returned to the site, drawn by its strategic access to key resources. They mitigated seismic risks by increasing their mobility and even abandoning Vale Boi, as seen during the Gravettian and at the early/late Proto-Solutrean transition. When seismic and climatic stressors co-occurred (Heinrich Event 2), they did not abandon the site. Instead, they adopted strategies to limit their exposure to rockfall hazard while securing access to increasingly vital coastal and estuarine resources. Until the early Proto-Solutrean, tightly knit social networks supported the survival of Vale Boi foragers during periods of high stress, such as the aftermath of seismic rockfalls. During the late Proto-Solutrean, an expansion of super-regional connections might have functioned as a proactive buffer against future tectonic shocks. Our findings demonstrate that forager resilience to seismic events relied on flexible adjustments in mobility and social connectivity. Despite limitations deriving from its single-site focus, this study underscores the value of deep archaeological sequences for disentangling human responses to intertwined geological and ecological pressures.
- Homo erectus adapted to steppe-desert climate extremes one million years agoPublication . Mercader, Julio; Akuku, Pamela; Boivin, Nicole; Camacho, Alfredo; Carter, Tristan; Clarke, Siobhán; Temprana, Arturo Cueva; Favreau, Julien; Galloway, Jennifer; Hernando, Raquel; Huang, Haiping; Hubbard, Stephen; Kaplan, Jed O.; Larter, Steve; Magohe, Stephen; Mohamed, Abdallah; Mwambwiga, Aloyce; Oladele, Ayoola; Petraglia, Michael; Roberts, Patrick; Saladié, Palmira; Shikoni, Abel; Silva, Renzo; Soto, María; Stricklin, Dominica; Mekonnen, Degsew; Zhao, Wenran; Durkin, PaulQuestions about when early members of the genus Homo adapted to extreme environments like deserts and rainforests have traditionally focused on Homo sapiens. Here, we present multidisciplinary evidence from Engaji Nanyori in Tanzania’s Oldupai Gorge, revealing that Homo erectus thrived in hyperarid landscapes one million years ago. Using biogeochemical analyses, precise chronometric dating, palaeoclimate simulations, biome modeling, fire history reconstructions, palaeobotanical studies, faunal assemblages, and archeological evidence, we reconstruct an environment dominated by semidesert shrubland. Despite these challenges, Homo erectus repeatedly occupied fluvial landscapes, leveraging water sources and ecological focal points to mitigate risk. These findings suggest archaic humans possessed an ecological flexibility previously attributed only to later hominins. This adaptability likely facilitated the expansion of Homo erectus into the arid regions of Africa and Eurasia, redefining their role as ecological generalists thriving in some of the most challenging landscapes of the Middle Pleistocene.
- Short communication: etimating radiocarbon reservoir effects in bolivian amazon freshwater lakesPublication . García-Escárzaga, Asier; Lombardo, Umberto; Bello-Alonso, Patricia M.; Capriles, José M.; Colonese, André; Dudgeon, Kate; Lucas Antunes Simões, Carlos Duarte; Fernandes, RicardoThe Llanos de Moxos, in the Bolivian Amazon, preserves a remarkable archaeological record, featuring thousands of forest islands. These anthropogenic sites emerged as a result of activities of the earliest inhabitants of Amazonia during the Early and Middle Holocene. Excavations conducted to date on the forest islands have revealed that many assemblages contain a high number of ancient freshwater snail remains. In these shell middens, the most represented mollusc taxon, and in most cases the sole one, is Pomacea spp., a genus that inhabits inland shallow lakes and wetlands. Although human burials and faunal remains are typically recovered from these sites, their collagen is often not preserved or is of poor quality, and shell carbonates from Pomacea shells, along with carbonised plant remains, are often used for 14C measurements. However, it remains undetermined if these measurements are subject to radiocarbon reservoir effect (RRE). To determine if a freshwater RRE could affect the age estimations of Amazonian archaeological and other paleoecological deposits, we collected modern coeval Pomacea shells and tree leaves from four locations across the Llanos de Moxos area for AMS radiocarbon dating. The radiocarbon results combined with the environmental history of Llanos de Moxos during the Holocene, do not reveal any significant RREs, and support the continued use of freshwater molluscs as viable material for radiocarbon dating in the region.