A comment on Steele’s (2010) “radiocarbon dates as data: quantitative strategies for estimating colonization front speeds and event densities”

We show that Steele’s (2010) criticisms of Hamilton and Buchanan (2007) and Buchanan et al. (2008) do not hold water and demonstrate that his re-analyses of Hamilton and Buchanan’s (2007) and Buchanan et al'.s (2008) datasets are flawed. In the process, we highlight some important issues for researchers interested in using radiocarbon dates to reconstruct population movements and demography. Most notably, we explain why OLS regression is preferable to RMA regression when estimating diffusion velocity, and demonstrate that the summed probability distributions yielded by CalPal are more reliable as guides to past demographic change than those produced by Calib and OxCal.     

Revealed by Waves: A Stratigraphic,Palaeoecological, and Dendrochronological Investigation of a Prehistoric Oak Timber and Intertidal Peats,Bay of Ireland,West Mainland,Orkney

An oak timber was discovered in 2013 within intertidal peats at the Bay of Ireland, Stenness, Orkney, representing a unique archaeological find. Subsequent excavation and rescue of the timber took place in 2014 to investigate its stratigraphical relationship before further eroding. Dendrochronological and morphological study identified the timber as a possible radially split log, c. 150 years of age when felled. No dendrochronological match was possible, and a wiggle-match date obtained provided a Later Mesolithic felling date of 4410–4325 cal BC. This timber is the first and only evidence so far for the use of oak in Mesolithic Orkney. The timber is significant palaeoecologically, suggesting oak may have been indigenous to Orkney. This adds to a growing argument for the existence of areas of “true woodland”. Pollen evidence shows the timber was deposited within reedswamp, fringed by willow-birch carr-woodland, with oak unlikely to have been growing in the immediate location. High microscopic and macroscopic charcoal values indicate Later Mesolithic communities exerted influence on this wetland using burning as a tool for landscape modification. It is unknown what the timber represents; it may have been for construction purposes or as a marker/possible landing place showing the path to the Loch of Stenness.     

Contribution of strontium to the human diet from querns and millstones: an experiment in digestive strontium isotope uptake

The question of whether rock grit ingested unintentionally from querns, metates or millstones, or deliberately through pica or geophagy, is bioaccessible in the human gut has not been addressed in archaeological strontium (Sr) isotope studies. This study employed the unified bioaccessibility method and determined that ingested rock grit can provide bioaccessible ⁸⁷Sr/⁸⁶Sr, but that unintentional consumption is unlikely to constitute > 1% of the diet (by mass) and will not significantly change, that is, by > 0.001, human skeletal ⁸⁷Sr/⁸⁶Sr. The use of locally or non‐locally sourced querns or millstones will not affect the interpretation of archaeological human ⁸⁷Sr/⁸⁶Sr values in Britain.     

International accompaniment,reflexivity and the intelligibility of power in post-conflict Guatemala

ABSTRACT

‘International accompaniers’ use their physical presence as a form of peaceful intervention to deter political violence against local human rights defenders. Threatened members of Guatemala’s civil society have relied on accompaniment as part of their security strategy since the early 1980s. Approximately one thousand volunteers from a dozen countries have accompanied in Guatemala. International accompaniment has been a key component of the effort to prosecute former military general and president Efraín Ríos Montt and other perpetrators of mass human rights violations in Guatemala. Victim witnesses and their legal counsel have included accompaniment as part of their protection strategy since 2000. Important questions have nonetheless been raised with respect to accompaniment’s effectiveness as a tool for witness protection and the possibility that it reinforces power inequalities. This article builds on Gada Mahrouse’s critique of accompaniment and draws on Michel Foucault’s understanding of reflexivity and power. The authors use insights from two case studies to support the argument that accompaniment’s usefulness as a tool for witness protection depends on its ability to accommodate the witnesses’ position within webs of interconnected power dynamics and the multiple ways in which they conceive of security. It also depends on how intelligible these different power dynamics are to accompaniers. This argument is used to highlight how accompaniment in Guatemala is relevant for other situations where the prosecution of human rights atrocities is long term and depends on witness testimony.     

A combined visual-geochemical approach to establishing provenance for pegmatite quartz artifacts

A technique for establishing source provenance for pegmatite quartz artifacts was developed using a quarry sample from the Churchill River basin of northern Manitoba and Saskatchewan. Secondary ion mass spectrometry (SIMS) was used to quantify Ti, Ge, Th, and U trace element concentrations and Pb isotope ratios, coupled with qualitative visual characteristics to distinguish between pegmatite quartz from different archaeologically exploited sources in the Churchill River basin region. The technique was also applied to a small sample of quartz artifacts recovered from sites in and around the study area in a preliminary attempt to assign or rule out raw material provenance to characterized sources.     

‘A Haven for Tortured Souls’: Hong Kong in the Vietnam War

The Vietnam War exerted a profound economic and social effect on Hong Kong. Between 1965 and 1970, the British Crown Colony annually hosted about 200,000 US ground and naval personnel on holiday. This influx annually earned Hong Kong about US$300–400 million (in 2012 dollars) and employed thousands of residents working in the colony's service industries. Using English- and Chinese-language archival materials from Hong Kong, the United States, and the United Kingdom, the article examines how US servicemen and the businesses catering to them became contentious issues in local society. Servicemen excited widespread interest, but their misdeeds and their stomping grounds provoked intense anxiety. Hong Kong residents’ ensuing debates exercised the colony's emerging public sphere, from newspaper battles to outspoken unions and neighbourhood associations. In tandem with the more commonly cited Star Ferry Riots of 1966 and the Communist agitations of 1967, US R&R was an essential ingredient in the emergence of a distinctive Hong Kong identity and citizenry during this period. While residents’ objections failed to curb the GIs’ haunts or holidays, Vietnam tourism and its reverberating effects pressed new sectors of Hong Kong people to grasp and articulate their investment as citizens in the territory's future.     

Comparison of Original and Modern Mortars at the Herculaneum Archaeological Site

ABSTRACT

This paper aims to evaluate mineralogical, elemental, and thermal differences among original Roman joint mortars and those used in twentieth-century restoration campaigns taken from different areas at the Herculaneum archaeological site. The purpose is to improve the compatibility of restoration mortars. Roman and modern mortars were studied with petrography, thermal analysis and x-ray fluorescence investigations. The results indicate significant differences between the Roman and modern mortars which could facilitate the degradation process. Roman mortars, in particular, were composed of a coarser aggregate which was present in a lower ratio with binder in comparison with modern mortars.     

The Transmission of Early Bronze Technology to Thailand: New Perspectives

In the four decades since the discovery that a discrete Bronze Age preceded the Iron Age in mainland Southeast Asia, much has been learned about the dating, technology, production, organization, and use of bronze metallurgy in the region, particularly in prehistoric Thailand. Although independent invention of copper smelting in Southeast Asia has not been considered likely by most regional archaeologists since the 1980s, the source of copper-base technology and the mechanisms of adoption remain poorly understood. Arguments claiming that the primary stimulus for the appearance of copper-base metallurgy in Southeast Asia came from early states in the Central Plain of China have dominated recent discussions, but anthropological approaches to technology transmission, adoption, and adaptation have yet to be systematically explored. After summarizing the current evidence for early bronze metallurgy in Thailand, this paper proposes an alternative to the predominant Sinocentric view of the source for Southeast Asian bronze technology. It will be proposed on both chronological and technological grounds that the first bronze metallurgy in Southeast Asia was derived from pre-Andronovo late third millennium BC Eurasian forest-steppe metals technology, and not from the second millennium, technologically distinctive, élite-sponsored bronze metallurgy of the Chinese Erlitou or Erligang Periods. Hypotheses for a transmission route and a research agenda for resolving debates on bronze origins in Southeast Asia are offered.