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.

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.

In 1928, Noel Morss was shown “irrigation ditches” along Pleasant Creek on the Dixie National Forest near Capitol Reef National Park, Utah, by a local guide who contended they were ancient. We relocated the site and mapped the route of an unusual mountain irrigation canal. We conducted excavations and employed OSL and AMS 14C showing historic irrigation, and an earlier event between AD 1460 and 1636. Geomorphic evidence indicates that the canal existed prior to this time, but we cannot date its original construction. The canal is 7.2 km long, originating at 2,450 m asl and terminating at 2,170 m asl. Less than half of the system was hand constructed. We cannot ascribe the prehistoric use-event to an archaeological culture, language, or ethnic group, but the 100+ sites nearby are largely Fremont in cultural affiliation. We also report the results of experimental modeling of the capital and maintenance costs of the system, which holds implications for irrigation north of the Colorado River and farming during the Little Ice Age. The age of the prehistoric canal is consistent with a fragmentary abandonment of farming and continuity between ancient and modern tribes in Utah.

Since the 1890s, archaeologists have been studying the cliff dwellings of the Mesa Verde region of south-western Colorado, seeking to understand the factors that drove the ancient Pueblo Indians from these once vibrant communities. The ongoing Sand Canyon-Castle Rock Community Archaeological Project examines connections between the landscape, architecture and rock art of the Castle Rock Community in the thirteenth century AD—immediately preceding the total depopulation of the Mesa Verde region. The combination of new technologies and collaboration with modern Pueblo people—the Hopi—provides a richer and more nuanced picture of the Community's last days.

In this article, I explore how digital data collection in the context of the Berkeley-Abiquiú Collaborative Archaeology (BACA) project works, some of the affordances of this new-ish technology, and how they articulate with analogue art practices to achieve the goals of engaged research. Thinking with affordances helps me reflect critically on what digital data recording offers our research goals. In this case, the most important aspect of using digital data recording is how it changes our relationship to time. New orientations of research time created by such technology is an opportunity to engage creatively with how archaeology can represent complexity, produce embodied experience, and share senses of place through both digital and analogue practices. As archaeologists trying to think trans-humanistically, we need to reflect critically on digital technologies to produce engaged research. This is always a shifting target. New uses reveal new possibilities, and vice versa. But newness is not what makes an impact, a difference, or changes the way we do research together; what makes a difference is the result, effects, and affects of these affordances.

Patterns of climate and C4plant abundance in the southwestern United States during the last glaciation were evaluated from isotopic study of herbivore tooth enamel. Enamel δ13C values revealed a substantial eastward increase in C4plant consumption for Mammuthusspp., Bisonspp., Equusspp., and Camelopsspp. The δ13C values were greatest in Bisonspp. (−6.9 to +1.7‰) and Mammuthusspp. (−9.0 to +0.3‰), and in some locales indicated C4-dominated grazing. The δ13C values of Antilocaprids were lowest among taxa (−12.5 to −7.9‰) and indicated C3feeding at all sites. On the basis of modern correlations between climate and C4grass abundance, the enamel data imply significant summer rain in parts of southern Arizona and New Mexico throughout the last glaciation. Enamel δ18O values range from +19.0 to +31.0‰ and generally increase to the east. This pattern could point to a tropical or subtropical source of summer rainfall. At a synoptic scale, the isotope data indicate that interactions of seasonal moisture, temperature, and lowered atmospheric pCO2determined glacial-age C4abundance patterns.

Highly mobile people must have sheltered in structures of some kind; but these are notoriously difficult to find. The author uses nineteenth-century photographs of an occupied Apache settlement to show how such shelters may have been made, comparing them with their archaeological remains in the present day. This suggests a ‘signature’ for the temporary shelters used by mobile groups in any period.

Although trails are widely recognized as an important element in the shaping of social and economic space, poor preservation and complex interpretations have meant that they are rarely the subject of systematic archaeological analysis. Ancestral Pueblo trails of New Mexico's Pajarito Plateau, in contrast, are both well-preserved and easily identified, providing an opportunity to study patterns of movement through the landscape during the 500 years prior to Spanish colonization. This study discusses the broader issues of analysing archaeological trails with specific reference to the Pajarito case.