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1. Early human impacts and ecosystem reorganization in southern-central Africa

   https://doi.org/10.1126/sciadv.abf9776  

   Thompson, Jessica C.; Wright, David K.; Ivory, Sarah J.; Choi, Jeong-Heon; Nightingale, Sheila; Mackay, Alex; Schilt, Flora; Otárola-Castillo, Erik; Mercader, Julio; Forman, Steven L.; et al (May 2021, Science Advances)

   null (Ed.)

   Modern Homo sapiens engage in substantial ecosystem modification, but it is difficult to detect the origins or early consequences of these behaviors. Archaeological, geochronological, geomorphological, and paleoenvironmental data from northern Malawi document a changing relationship between forager presence, ecosystem organization, and alluvial fan formation in the Late Pleistocene. Dense concentrations of Middle Stone Age artifacts and alluvial fan systems formed after ca. 92 thousand years ago, within a paleoecological context with no analog in the preceding half-million-year record. Archaeological data and principal coordinates analysis indicate that early anthropogenic fire relaxed seasonal constraints on ignitions, influencing vegetation composition and erosion. This operated in tandem with climate-driven changes in precipitation to culminate in an ecological transition to an early, pre-agricultural anthropogenic landscape. 

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2. Deconstructing a complex obsidian “source‐scape”: A geoarchaeological and geochemical approach in northwestern Patagonia

   https://doi.org/10.1002/gea.21701  

   Barberena, Ramiro; Fernández, María V.; Rughini, Agustina A.; Borrazzo, Karen; Garvey, Raven; Lucero, Gustavo; Della Negra, Claudia; Villanueva, Guadalupe Romero; Durán, Víctor; Cortegoso, Valeria; et al (November 2018, Geoarchaeology)

   Abstract Northwestern Patagonia is located in a tectonically active part of the southern Andes (Argentina), which has facilitated the formation of obsidian, including pyroclastic deposits that have been affected by geomorphic processes, resulting in a complex obsidian landscape. To date, the geomorphic relocation of obsidian in the landscape has not been a focus of systematic research, and this hampers our understanding of prehistoric human mobility. We present an updated assessment of the regional availability of different obsidian types based on results from our research program, which combines geoarchaeological survey and geochemical characterization to understand the properties and distribution of obsidian. This robust “source‐scape” provides the foundation for reconstructing patterns of lithic provisioning and discard. Our results suggest that interpretations of obsidian availability across the landscape should be more nuanced than is typically acknowledged. Based on our improved “source‐scape,” we discuss the patterns observed in an archaeological X‐ray fluorescence database. When compared with the geoarchaeological reconstruction of obsidian availability, the archaeological record conforms to a distance‐decay pattern. Contrary to previous interpretations, we suggest that the distribution of obsidian types is not isomorphic with human home ranges. This geoarchaeological research program provides a basis for integrating the archaeological record of different Andean regions. 

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3. Modeling Archaic land use and mobility in north-central Belize

   https://doi.org/10.1016/j.jaa.2024.101583  

   Brouwer_Burg, Marieka; Harrison-Buck, Eleanor (June 2024, Journal of Anthropological Archaeology)

   The Archaic period has not been as widely studied in Mesoamerica as it has been in other parts of the Americas. This problem stems from intractable issues such as low archaeological visibility and high post-depositional disturbance. And, while existing Archaic data from northern Belize indicates that foraging groups practiced diverse adaptations, little theoretical effort has been dedicated toward developing frames of reference for understanding the coupled human-landscape interactions ongoing during this period. Here, we outline a multimethod approach for situating hunter-gatherer-fisher-emergent horticultural land use behaviors, including comparative ethnographic data, extant archaeological information, and geospatial modeling. We set out a series of assumptions and expected material correlates for the archaeological record and develop a site suitability model for heuristically exploring existing data, as well as for predicting areas of high archaeological potential for future work. In this way, we are answering the call for more intensive, regional studies that take a holistic approach to understanding foraging practices at multiple scales. The site suitability model described here can be used as an effective way to conduct research remotely during times of travel restrictions and is widely applicable to a range of study areas both in and outside of Mesoamerica. 

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4. A method for the taphonomic assessment of bone tools using 3D surface texture analysis of bone microtopography

   https://doi.org/10.1007/s12520-020-01195-y  

   Martisius, Naomi L.; McPherron, Shannon P.; Schulz-Kornas, Ellen; Soressi, Marie; Steele, Teresa E. (October 2020, Archaeological and Anthropological Sciences)

   Abstract Increasingly researchers have employed confocal microscopy and 3D surface texture analysis to assess bone surface modifications in an effort to understand ancient behavior. However, quantitative comparisons between the surfaces of purported archaeological bone tools and experimentally manufactured and used bones are complicated by taphonomic processes affecting ancient bone. Nonetheless, it may be reasonable to assume that bones within the same deposits are altered similarly and thus these alterations are quantifiable. Here we show how unworked bones can be used to quantify the taphonomic effect on bone surfaces and how this effect can then be controlled for and incorporated into an analysis for evaluating the modified surfaces of purported bone tools. To assess the baseline taphonomy of Middle Paleolithic archaeological deposits associated with typologically identified bone artifacts, specifically lissoirs , we directly compare the surface textures of ancient and modern unworked ribs. We then compare the ancient unworked ribs and lissoirs to assess their differences and predict the ancient artifacts’ original surface state using a multilevel multivariate Bayesian model. Our findings demonstrate that three of five tested surface texture parameters ( Sa , Spc , and IsT ) are useful for distinguishing surface type. Our model predictions show that lissoirs tend to be less rough, have more rounded surface peaks, and exhibit more directionally oriented surfaces. These characteristics are likely due to anthropogenic modifications and would have been more pronounced at deposition. Quantifying taphonomic alterations moves us one step closer to accurately assessing how bone artifacts were made and used in the ancient past. 

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5. Photographic Insights from Engaged Archaeology: Yucatan and Beyond

   https://doi.org/10.1017/S0959774322000166  

   Kurnick, Sarah (June 2022, Cambridge Archaeological Journal)

   Photography has been a particularly important though often under-theorized aspect of archaeological research. Although seemingly simple representations, photographs are simultaneously objective and subjective, truthful and creative. This article considers the contradictory nature of photography generally and the specific relationship between photography and archaeology. It then looks at the Yucatan peninsula of Mexico and examines how individuals have photographed ancient Maya sites, architecture and artifacts from the mid nineteenth century to the present. Initially used to support diffusionist theories of Maya origins, photography was later understood as a neutral and scientific way to record the Maya past. More recently, it has been used to share power more equitably with local communities and to make archaeology a more inclusive and relevant endeavour. Indeed, several have demonstrated that photography is a useful tool for engaged archaeology. This article argues that the reverse is also true: insights from engaged archaeology are useful tools for archaeological photography generally. By making photographic choices explicit and by including people and other aspects of the contemporary world in their photographs, scholars can emphasize that archaeology is a decisively human and necessarily political endeavour, and that archaeological sites and artifacts are dynamic and efficacious parts of the contemporary world. 

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