Induced metal-ion exchange in excavated human bone

Excavated human bone was exposed to aqueous solutions containing high concentrations of a single added metal ion in order to examine the extent of introduction of contaminating materials during burial. Variables included pH, temperature, ion concentration, state of bone (whole or crushed), structure of buffer, and counterion. Calcium and sodium showed little increase, and even a decrease in some cases. Strontium, zinc, lead, and magnesium showed large increases probably through heteroionic replacement of calcium. Manganese, aluminum, and potassium showed increases, particularly under neutral conditions, probably through infiltration into voids and defects.     

Sclerochronological analysis of archaeological mollusc assemblages: methods,applications and future prospects

Accreting skeletal tissues found in bone, teeth, otoliths and molluscan shell act as sensitive recorders of local environmental and climatic conditions. Owing to their robust nature, ubiquity and abundance in the archaeological record as well as the potential for high-resolution data acquisition, the accreting skeletal tissues of archaeological molluscs are increasingly employed as palaeoenvironmental proxies. Researchers have chiefly utilised such proxies to extend instrumental records of environmental conditions through palaeoenvironmental reconstruction and explore the impact of environmental and climatic change on human populations. However, the use of environmental proxies from the archaeological record can be hampered by a number of methodological challenges including inadequate sampling strategies, appropriate calibration, the use of inappropriate proxies and the broad extrapolation of localised results. This paper reviews the use of molluscan shell from archaeological contexts as palaeoenvironmental proxies. We focus on the application of sclerochronology—a suite of high-resolution physical and geochemical data recovery methods widely used in conjunction with molluscan shell. This paper presents an overview of the potential of these techniques in approaching more nuanced understandings of human-environment interactions and how they can be more successfully incorporated into archaeological research.     

The spaces of UK students’ unions: extending the critical geographies of the university campus

This article seeks to further our knowledge of the university campus by focusing on one particular aspect of most UK campuses: the students’ union. UK students’ unions have rarely been the subject of scholarly attention, despite them now occupying an important place within the higher education landscape. Nevertheless, in this paper we draw on a UK-wide study of students’ unions to explore, firstly, the role played by the buildings of the students’ union and, secondly, the ways in which aspects of the university’s campus influence union activity. We pay particular attention to the expansion of the university campus, in many institutions, from a single site to multiple sites, both within the UK and overseas. We contend that a focus on the materiality of the students’ union and the level of union activity (or inactivity) across various campus spaces can illustrate the values, ideologies and power relations that dominate contemporary British higher education.