Combining an archaeomagnetic and radiocarbon study: dating of medieval fireplaces at the Mühlegasse,Zürich

During the restoration of the Radium cinema located in the old Town of Zürich, a stratigraphic sequence of medieval fireplaces came to light. Based on ceramic finds, a preliminary age of about 1000 AD was assigned. In this paper we show the results from archaeomagnetic and radiocarbon dating, which combined with the stratigraphic information yield a better constrain of the period of use of these fireplaces. Whilst the radiocarbon technique continues to be the most widespread methodology for dating young archeological artifacts, archaeomagnetic dating is becoming increasingly more established in Europe thanks to the increased number of available measurements. A Bayesian model on the period of use of these fireplaces was produced with OxCal, by a combination of magnetic and radiocarbon ages, together with the stratigraphic information. The results show that the fireplaces were probably used during 1 to 2 generations (e.g. 20–40 years each), and are in good agreement with the archaeological context of this site. To make use of the magnetic measurements for future reconstructions of the field, we carried out an additional age model using only the radiocarbon and the stratigraphic information. Although some of the structures show large directional scatter due to poor baking in antiquity, the results confirm the trend of the geomagnetic field around 1000 AD.     

Handle with Care! A Qualitative Comparison of the Fragile States Index's Bottom Three Countries: Central African Republic,Somalia and South Sudan

For the past four years, the Fund for Peace has ranked the Central African Republic, Somalia and South Sudan as the ‘most fragile states’ in the world, in its annual Fragile States Index (FSI). The three countries’ almost identical scores suggest comparability; however, critics raise concerns about the FSI's data aggregation methods, and its conflation of causes and consequences. This article treads the uncharted path of unpacking the empirical realities that hide behind FSI indicators. Drawing on data collected during field research in the three states, the authors investigate three security indicators (security apparatus, factionalized elites, and external intervention) and propose an alternative, qualitative appreciation. Each country's fragility is based on how security forces, elites and interventions evolved over time and installed themselves differently in each region of the country. The qualitative assessment presented here shows that not every indicator matters in all cases at all times or throughout the country. Most crucially, the authors unveil enormous differences between and within the FSI's three ‘most fragile states’. Such variations call for better‐adapted and more flexible intervention strategies, and for quantitative comparisons to be qualitatively grounded.