Geology and lithic procurement in Upper Palaeolithic Europe: a weights-of-evidence based GIS model of lithic resource potential

In this paper we examine ways to predict the distribution of siliceous rock in Europe, using a Bayesian technique known as ‘Weights-of-Evidence’. We use the technique to classify bedrock geological formations in terms of their likelihood of yielding tool-quality lithic raw materials, and we use the results to re-examine possible causes of a west–east cline in maximum lithic raw material transfer distances observed when comparing sites in both Middle and Upper Palaeolithic Europe. It is evident from our results that there is a decline in abundance of geological formations highly predictive of tool-quality rock along a west–east cline, predominantly reflecting a decrease in abundance of Jurassic and Cretaceous chert-bearing sedimentaries. Our results are consistent with an interpretation of the Upper Palaeolithic record of transfer distances as indicating special-purpose procurement.     

The analysis of copper artifacts of the copper inuit

Metallography and neutron activation analysis have been used to investigate copper artifacts from 19th century archaeological sites associated with the “Copper Inuit” of the west-central Canadian Arctic. A knowledge of the source of the copper from which the artifacts were manufactured - native (local) copper or European (exotic) copper - is important, for example, to studies of the effects of European contact on utilization of native copper and on the general lifestyle of the Copper Inuit. Trace element analysis by neutron activation using the SLOWPOKE reactor has allowed local native copper, from the Coppermine River and Victoria Island, NW Territories, to be clearly distinguished from 19th century European smelted copper, which was found to contain higher concentrations of arsenic, antimony, nickel and selenium. Moreover, optical and scanning electron metallography revealed significant microstructural differences between native copper and the 19th century smelted copper. As a consequence it was possible to differentiate between native copper archaeological artifacts and those produced from smelted copper.     

An archaeologically validated protocol for computing obsidian hydration rates from laboratory data

This paper reports the computation of hydration rate for Topaz Mountain obsidian from laboratory data, and a comparison with archaeological data from a well-dated site, Camels Back Cave, in western Utah. Topaz Mountain obsidian is found to be slow-hydrating, with a rate of 0.071 ± 0.021 μ/yr^½ at an effective hydration temperature of 16.01 °C. This rate agrees with a rate developed from archaeological data from Camels Back Cave within ∼6%. Activation energy of Topaz Mountain obsidian is 10370 ± 544 K, and its diffusion constant is (1.87 ± 9.13) × 10¹³ μ²/yr, both of which are independent of temperature. Its intra-source variability in hydration rate is very low (CV < 0.01), implying a low variability in intrinsic water. We present a model of chemical erosion which shows why earlier laboratory-determined rates were incorrect, and discuss the implications of our findings on the determination of experimentally derived rates in obsidian hydration dating.     

Working through theoretical tensions in contemporary archaeology: A practical attempt from southwestern Colorado

Archaeology should actively combine different paradigms to obtain a more complete understanding of the past. This paper argues for a practical combination of elements of the culture-historical, processual, and postprocessual approaches into a two-tier model. The first tierreconstructs the events of the past, using culture-historical and middle-range principles, and the secondconstructs a reflexive explanation of these events, which situates an analysis of the internal and external constraints on past human behavior within the specific theoretical and political positions of the analyst. The theoretical arguments are developed by means of an analysis of the prehistory of a segment of the mountains of southwestern Colorado.     

Tourism in changing natural environments

ABSTRACT

Natural environments and the human interactions that occur within, are continuously changing and evolving. However, increasingly, the impacts of climate change, natural and man-made disasters, economic instability, and other macro-environmental factors, have profound implications on local and global economies, fragile ecosystems, and human cultures and livelihoods. In response, tourism within these natural environments is also changing and evolving rapidly in both developed and developing regions. While at times this is spurred by new opportunities, it is often also the result of resource and user-conflicts and changing environmental circumstances. The articles in this special issue examine the numerous ways in which changes in the natural environment impact tourism, and how the tourism industry is responding and adapting to such changes. Detailed case study examination of human interactions within what are often fragile ecosystems can provide us with important insight on social and ecosystem resiliency, innovation and adaptation, and factors that drive tourism success. This was the focus of a session at the inaugural Tourism Naturally Conference, held in Alghero, Italy, 2–5 October 2016, and formed the basis for this collection of articles. From these contributions, what is evident is that while adaptation can be passive in nature, it can, and should ideally be much more proactive, with individuals and organizations seeking improved knowledge and learning. Such actions will contribute to greater resilience within the tourism industry, whether in response to climate change and its subsequent impacts, or an increasing scarcity of the natural resources upon which tourism relies.     

Trace element and Pb isotope provenance analyses of native copper in northwestern North America: results of a recent pilot study using INAA,ICP-MS,and LA-MC-ICP-MS

Several indigenous groups in northwestern North America used native copper prior to EuroAmerican contact. The Arctic, Subarctic, and Northwest Coast culture areas all have archaeological finds and geological sources of native copper. The copper-rich region of south-central Alaska and southwestern Yukon has often been credited as the source of archaeological native copper found on the Northwest Coast despite the presence of native copper sources further south. This paper presents the results of a pilot study using INAA, ICP-MS, and LA-MC-ICP-MS to assess the potential for native copper provenance research in Alaska and the Yukon Territory. Discrete native copper sources could be distinguished from one another intra-regionally. Difficulties associated with future native copper provenance research in northwestern North America are discussed.     

Intensification revisited: assessing resource specialization at Crystal River (8CI1) and Roberts Island (8CI41), Florida

ABSTRACT

Archaeologists typically associate resource intensification with population expansion, environmental change, and political strategizing. Many Late Woodland and Mississippian societies of the Southeast eschewed dietary diversity in favor of harvesting fewer types of resources that could meet the subsistence demands of incipient aggregation. Foods such as maize and shellfish can provide humans with predictable caloric yields and are amenable to control by individuals or corporate groups. However, some archaeologists have identified scenarios in which small-scale societies intensified resources in the absence of population growth and social inequality. Ritual economies can periodically place high demands on the materials used for gatherings and ceremonies. These events then may leave material residues of economic intensification, which archaeologists might easily mistake as evidence for population expansion or social evolution. We use diversity and equitability estimates of zooarchaeological deposits from Crystal River (8CI1) and Roberts Island (8CI41), Florida, to demonstrate that some Woodland period societies periodically intensified their use of resources amidst population decline and heightened ritual activity. We suggest that the inhabitants of the area harvested shellfish at increasingly high rates to provide the material basis for a series of ritual interventions that aimed to circumvent the effects of rapid social and ecological change.