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This article investigates the context, dating, and character of Ancestral Pueblo building murals at multiple scales in one of the least-studied areas of the northern US Southwest. The study focuses on developing a diachronic seriation of Ancestral Pueblo mural styles in the Cedar Mesa area of the Bears Ears and Natural Bridges National Monuments in southeastern Utah. In this process, I evaluate prior discussions of the function and dating of murals in the region during the recent and ancient past. This seriation is built using a combination of newly developed methods for dating mural creation and use with dendrochronology and augmented with previously published data. Using the Cedar Mesa area as a case study, I demonstrate the methods used to create the mural seriation, using aspects of technological style to identify communities of building mural practice shared at the site and subregional scales over the 12th and 13th centuries a.d. [ABSTRACT FROM AUTHOR]

Six ancestral Pueblo community water supply sources were investigated by a team of engineers, scientists, archeologists, and other specialists affiliated with Wright Water Engineers, Inc. (WWE), and the Wright Paleohydrological Institute (WPI) from 1996 to 2021. The team members applied their various technical backgrounds and research methods to gain more insight into the water available to the ancestral Pueblo people living in the Four Corners area of the United States between 750 and 1280 CE, and how these indigenous people managed the water. Using lab analyses, field research, surveys, and analyses of sediment layers, the WWE/WPI team determined that four mounded areas discovered at Mesa Verde National Park had been ancestral Pueblo reservoirs. Through climate research, lab analyses, and investigations at these and two other sites, the team learned that water in this region was limited, and the community had to work diligently to harvest this water and maintain access to it. In the case of the four reservoirs studied, for example, the runoff used as water supply carried a high volume of sediment that required the water storage basins to be frequently dredged to maintain adequate capacity. These and other examples indicate that the ancestral Pueblo people were resourceful, hardworking, and organized water harvesters. [ABSTRACT FROM AUTHOR]

We examine provenance data collected from three types of geological resources recovered at Goat Spring Pueblo in central New Mexico. Our goal is to move beyond simply documenting patterns in compositional data; rather, we develop a narrative that explores how people's knowledge and preferences resulted in culturally and materially determined choices as revealed in those patterns. Our analyses provide evidence that residents of Goat Spring Pueblo did not rely primarily on local geological sources for the creation of their glaze paints or obsidian tools. They did, however, utilize a locally available blue-green mineral for creation of their ornaments. We argue that village artisans structured their use of raw materials at least in part according to multiple craft-specific and community-centered ethnomineralogies that likely constituted the sources of these materials as historically or cosmologically meaningful places through their persistent use. Consequently, the surviving material culture at Goat Spring Pueblo reflects day-to-day beliefs, practices, and social relationships that connected this village to a broader mosaic of interconnected Ancestral Pueblo taskscapes and knowledgescapes. [ABSTRACT FROM AUTHOR]

Periods of acute climate stress – the convergence of low subsistence yields due to poor climate conditions and ineffective buffering strategies due to climate variability – critically reduces peoples' ability to subsist and mitigate food shortages, thereby creating conditions that could result in profound social change. Here, paleoclimate reconstructions are used to identify periods of acute stress at three large Ancestral Pueblo villages in the US Southwest. These periods are examined in relation to occupation histories at each village showing that in certain instances, acute climate stress played a primary role in people's decisions to leave communities. However, not all of the communities reacted to stress in the same way indicating that distinct patterns of climate and social context played an important role in influencing how acute climate stress was experienced by different groups. Results from this study highlight the importance of community‐specific histories when considering the impact of climate stress on past people. [ABSTRACT FROM AUTHOR]

The impacts on global climate of the AD 536 and 541 volcanic eruptions are well attested in palaeoclimatic datasets and in Eurasian historical records. Their effects on farmers in the arid uplands of western North America, however, remain poorly understood. The authors investigate whether extreme cold caused by these eruptions influenced the scale, scope and timing of the Neolithic Transition in the northern US Southwest. Archaeological tree-ring and radiocarbon dates, along with settlement survey data, suggest that extreme cooling generated the physical and social space that enabled early farmers to transition from kin-focused socio-economic strategies to increasingly complex and widely shared forms of social organisation that served as foundational elements of burgeoning Ancestral Pueblo societies.

We developed a new approach to identify vulnerabilities to water insecurity across entire archaeological culture areas by combining a paleohydrological model of the sensitivites of hydrological systems to droughts with least-cost analyses of the costs to acquire domestic water. Using a custom Python script integrated into ArcGIS Pro software, we calculated the pairwise one-way cost in time for walking between 225 water sources and 5,446 Ancestral Pueblo cultural sites across the Jemez and Pajarito Plateaus of the Jemez Mountains, New Mexico. This allowed us to identify whether periodic hydrological droughts occurring between AD 1100 and 1700 increased water acquisition costs across these regions.We found that hydrological droughts increased travel times in both regions to durations exceeding modern standards for water insecurity. Beginning in the fourteenth century, greater underlying hydrogeological sensitivities to droughts and the decline of a dual-residence pattern caused by population losses made the remaining aggregated communities of the Pajarito Plateau much more vulnerable to water insecurity than those on the Jemez Plateau. This would have upended long-standing relationships between communities and water on the Pajarito Plateau during a time when socioeconomic integration across the northern Rio Grande Valley pulled people toward valley bottoms. [ABSTRACT FROM AUTHOR]

Anthropologists have recently paid greater attention to gender and the division of labor in subsistence societies around the world. These studies have included Ancestral Puebloan societies in the United States Southwest, particularly on the Colorado Plateau. Based on ethnographic literature, women in this region have been responsible traditionally for a wide range of domestic activities, including child-rearing, farming, food preparation, cooking, pottery making, basket weaving, and collecting and transporting firewood and water. The present study presents a predictive model for prehistoric cooking energy systems on the Colorado Plateau. This model examines the causal links between environmental variables and fuelwood demand, acquisition, and use. These causal relationships have been delineated in contemporary cross-cultural research as well as studies of high-altitude cooking. Fuelwood collection, transport, and use form the core of women's workload. This preliminary study serves to predict women's annual workload based on the relationship between the number of fuelwood collecting trips and the elevation of Ancestral Puebloan settlements. [ABSTRACT FROM AUTHOR]

The impact of Indigenous populations on historical fire regimes has been controversial and beset by mismatches in the geographic scale of paleofire reconstructions and the scale of land-use behaviors. It is often assumed that anthropogenic burning is linearly related to population density and not different cultural practices. Here we take an off-site geoarchaeology strategy to reconstruct variability in historical fire regimes (<1000 years ago) at geographic scales that match the archaeological, ethnohistorical, and oral tradition evidence for variability in the intensity of Indigenous land use by two different cultural groups (Ancestral Pueblo and Western Apache). We use multiple, independent proxies from three localities in ponderosa pine (Pinus ponderosa) forests in east-Central Arizona to reconstruct fire regime variability during four phases of cultural use of different intensities. Elevated charcoal with domesticate pollen (Zea spp.) but otherwise unchanged forest pollen assemblages characterized intensive land use by Ancestral Pueblo people during an early phase, suggesting fire use to support agricultural activities. By contrast, a phase of intensive pre-reservation Western Apache land use corresponded to little change in charcoal, but had elevated ash-derived phosphorus and elevated grass and ruderal pollen suggestive of enhanced burning in fine fuels to promote economically important wild plants. [ABSTRACT FROM AUTHOR]

Despite considerable developments in the archaeological application of lidar for detecting roads, less attention has been given to studying road morphology using lidar. As a result, archaeologists are well equipped to locate but not thoroughly study roads via lidar data. Here, a method that visualizes and statistically compares road profiles using elevation values extracted from lidar-derived digital elevation models is presented and illustrated through a case study on Chaco roads, located in the US Southwest. This method is used to establish the common form of ground-truthed Chaco roads and to measure how frequently this form is across non-ground-truthed roads. This method is an addition to the growing suite of tools for documenting and comparing roads using remotely sensed data, and it can be particularly useful in threatened landscapes where ground truthing is becoming less possible. [ABSTRACT FROM AUTHOR]

Corrugated vessels are ubiquitous throughout the US Southwest, and yet their research potential is often overlooked. This paper quantifies how much uniformity or variability goes into the process of manufacturing these objects. The paper focuses on the fundamental, early-stage technological choice of coiling direction. Does coiling direction determine other attributes visible on ceramic vessel bodies, specifically indentation angle? To answer this question, I closely examine whole and majority-intact ceramic vessels. The sample comprises 255 vessels with exposed coiling or corrugation. The goals of the study are twofold: 1) to resolve whether indentation angles on corrugated sherds are a good proxy for coiling direction, and 2) to define the distributional patterns of coiling direction across the Ancestral Pueblo and Mogollon regions of the Southwest. Results indicate 1) indentation angle is associated with coiling direction, but perhaps not closely enough to make indentation angle a wholly reliable proxy for coiling direction; and 2) coiling direction is nearly uniformly counterclockwise with clinal variation at the southern and northern bounds of the US Southwest and a temporal trend toward clockwise coiling. [ABSTRACT FROM AUTHOR]

Although the application of semiotics to the archaeological study of rock art is not new, Peircean perspectives are still uncommon, and those implementing the concepts of qualisigns and qualia are only rarely employed. Yet, an approach centered on sensuous properties can serve as a valuable complement to other materiality- and landscape-based frameworks popular in contemporary rock art research. Using Ancestral Pueblo rock art from the Middle and Northern Rio Grande region of the U.S. Southwest as an example, I offer an archaeological narrative of how social values may be attached to conventionalized qualia rooted in sensorial experiences. Specifically, I examine how diverse media—rock art, shields, objects of adornment, and feathers—were connected through luminosity and security, culturally conceptualized qualitative properties that became formalized and enregistered in the context of new social institutions and modes of group conduct appearing during the 14th century CE. [ABSTRACT FROM AUTHOR]

Many Mesa Verde cliff dwellings were occupied during the thirteenth century in the final decades before the Four Corners region was depopulated. Deposits in such cliff dwellings offer unique opportunities to research motivations for migration and to understand living conditions in these unusual locations. In compliance with NAGPRA, bioarchaeological data were collected from Wetherill Mesa burials in 1995; this study is the first systematic analysis of these data. Skeletal health indicators demonstrate increased physiological stress for residents of Pueblo III cliff dwellings. Worsening health related to resource availability and distribution, aggregation, and unsanitary living conditions might have influenced migration from the region. Skeletal fracture data indicate decreased trauma during the Pueblo III, contrasted with the possibility of culturally mediated violence or violent attack at Long House. This pattern of violence was likely a response to insecurity during the late thirteenth century and ultimately might have provided another motivation for migration. [ABSTRACT FROM AUTHOR]

Indigenous American shield-making traditions are best known among the peoples of the Plains and Southwest cultural provinces, where shields were used in martial and ceremonial contexts. In these regions, shields are frequently represented in images cross-cutting a range of visual media including rock and mural paintings, and pictographs and petroglyphs, some of which exhibit considerable antiquity. Actual shields, however, are almost unknown archaeologically. This article presents new data resulting from an analysis of five coiled basketry shields recovered from archaeological sites in the northern Southwest. Digital image enhancement clarifies the nature of early shield decoration, while evidence for use in combat contributes to knowledge of shield evolution and function. Improved dating suggests the possibility that basketry shields predate the proliferation of shield imagery in the AD 1200s. These observations help reorient discussion of shield form, function, and iconography within the context of wider cultural developments during the AD 1200s and beyond. [ABSTRACT FROM AUTHOR]

In the Northern Rio Grande region of New Mexico, USA, Ancestral Pueblo villages experienced rapid demographic and economic growth in the late 14th and 15th centuries A.D. Recent research has proposed that this growth was underwritten by cotton production for exchange. Gravel mulch was an important component of cotton agriculture, but its function and soil legacies are not well understood. Since water management was likely a critical feature of gravel mulch, this study examines soil variables affected by changes to water supply. Gravel mulch analyzed in this study was found to have a substantial impact on the surface soil particle size distribution, but other aspects of soil quality were unaffected. The depth profiles of base cation ratios in mulched and unmodified locations suggest that gravel mulch continues to enhance water infiltration. Based on the timing of cotton development and inferred infiltration depths associated with gravel mulch soils, gravel mulch technology is well suited to the monsoonal precipitation regime of the region and the phenology of cotton. [ABSTRACT FROM AUTHOR]

Across seventy years of research, the site of Tijeras Pueblo has become an important place for understanding the transformations that impacted Rio Grande Pueblo society during the fourteenth century A.D. During that time, the course of research at the pueblo has been guided in part by its changing ownership and management of the site. While the first investigations were conducted while the site was privately owned federal acquisition of the pueblo facilitated the major excavations that took place there in the late 1960s and 1970s. As federal objectives for research evolved with new legislation, the involvement of Native Americans resulted in a major shift in how the last excavations in 2000 were conducted. While sustained interest in Tijeras Pueblo has been driven by its role in addressing major questions about the course of Pueblo history, its ownership and management have shaped, and continue to shape, how we know this important place. [ABSTRACT FROM AUTHOR]

This paper provides an overview of the Tijeras Pueblo archaeological site. Highlighting Tijeras Pueblo as a community located at a cultural, geographical, and temporal crossroad, the paper attempts to place Tijeras Pueblo within a broader academic and social context. The excavation history of the site will be discussed, along with previous research, and past and modern significance. In its current context, Tijeras Pueblo has become of center of archaeological and cultural education and a place where knowledge is both created and disseminated. Occupying a very public space in the community, the site and its collections have become teaching tools for a new generation of professional and avocational archaeologists and for the greater Albuquerque community. [ABSTRACT FROM AUTHOR]

Beads and other personal ornaments were recovered during excavations at Tijeras Pueblo (LA 581). In 2008, a volunteer project was begun (1) to identify potential jewelry artifacts from the site, and their contexts; (2) to develop criteria for classifying artifacts as jewelry; and (3) to make these data accessible to future researchers. Comparisons with other sites show that Pueblo IV jewelry consists mostly of beads and pendants, with a few unusual pieces at each site. The variety of ornament materials, styles, and designs in the Tijeras Pueblo assemblage suggests the flow of objects, ideas, and practices across the Southwest and Northern Mexico. A comparison of the contexts in which jewelry artifacts were recovered at Tijeras Pueblo and Pottery Mound (LA 416) indicates possible differences in jewelry use. This project highlights how volunteers with specific interests and expertise can significantly enhance the research value of legacy collections. [ABSTRACT FROM AUTHOR]

We analyzed 110 coprolites from the drought period for the Puebloan sites of Aztec and Salmon Ruins. Both sites can be placed in the Ancestral Pueblo III occupation (AD 1180-1260). These sites are typical of large, defensible towns that survived this time of threat by virtue of large populations in stonewalled villages with accessible water. We hypothesize that the concentration of large numbers of people promoted pinworm infection and, therefore, explains the phenomenal levels of infection at these sites, 33-72.7%. Dietary analysis of the same samples shows a diminished use of maize (54%) and beans (24%) compared to other Puebloan sites. This was a diet low in vitamin B12 and folic acid. Recent clinical analyses show that high pinworm infections leach B12 and folic acid. Therefore, it is likely that the synergy between parasitism and marginal nutrition was the base cause for porotic hyperostosis in the region. Thus, climate change caused population aggregation that resulted in extreme crowd disease and poor nutrition. The highest levels of porotic hyperostosis in North America comes from Puebloan sites. This study reveals the causation of those high levels. [ABSTRACT FROM AUTHOR]

Animal body size estimation from zooarchaeological specimens often relies on specific, one-dimensional (i.e., conventional) measures from skeletal elements. Here, we introduce an animal body size estimation technique for archaeological fishes that relies on 3D reference scans and the calculation of centroid size, a standard 3D geometric morphometric proxy measure for organism size. Centroid size-based estimations on whole caudal vertebrae are strongly correlated with a widely accepted measure (i.e., centrum width), but the scalability and flexibility of the centroid size-based approach allows for use on a wide variety of fragmented remains. We use zooarchaeological fish remains (subfamily Ictiobinae) from late pre-Hispanic period large village sites located in the Middle Rio Grande region of New Mexico. Informal reports suggest that fishes were large during this time, and we demonstrate that ictiobines were significantly large compared to modern specimens. The centroid size-based body size estimation technique indicates that Ancestral Pueblo fishing strategies were associated with energy maximizing foraging behavior. • A new body size reconstruction method is as reliable as common techniques. • It answers questions about fishing strategies in difficult contexts. • It is applied to fishes from sites in the Middle Rio Grande of New Mexico. • Results suggest environmental change is linked to fishing in the Middle Rio Grande. [ABSTRACT FROM AUTHOR]