Luminescence and radiocarbon dating as tools for the recognition of extraterrestrial impacts

Extraterrestrial events and the extraterrestrial origin of both material and impact forms were recognized in the Morasko, Kaali and Przełazy shallow geological profiles by means of luminescence and radiocarbon dating as well as the frequency of magnetic spherules. The obtained results provide a promising tool for proving theat extraterrestrial events affected characteristic lithological and morphological environmental features.     

When wildcats feed on rabbits: an experimental study to understand the taphonomic signature of European wildcats (<Emphasis Type="Italic">Felis silvestris silvestris</Emphasis>)

Studies of the feeding ecology of the European wildcat (Felis silvestris silvestris) demonstrate that leporids, mostly European rabbit (Oryctolagus cuniculus), dominate their diet in regions where they are present. The remains of wildcats have been found at Pleistocene and Holocene archaeological sites, raising the possibility that they actively accumulated leporid bones in caves and shelters shared with other terrestrial carnivores, raptors and humans. We present the first taphonomic study of rabbit remains consumed by this terrestrial carnivore, with the ultimate aim of understanding their role in bone accumulations at archaeological sites. An experimental study was carried out with a wildcat female, who was fed with nine complete rabbit carcasses. Non-ingested remains and scats were recovered for the analysis of anatomical representation, breakage and bone surface modification. This revealed that non-ingested remains and scats of the European wildcat can be discriminated from most other agents of accumulation. The referential framework provided will permit the discrimination of hominids and wildcats as agents of fossil accumulations of rabbits.     

Fish Processing in the Mediterranean: Varying Traditions,Technologies and Scales of Production with Particular Reference to the Eastern Mediterranean

Research into the processing of marine resources along the Mediterranean coasts in antiquity reveals an uneven picture. The archaeological evidence for the systematic processing of fish and seafood in the western part is abundant and varied. Here, the production of salted fish and fish sauces seems to have been an important factor contributing to economic growth in many locations. In the eastern part of the Mediterranean, however, archaeological evidence for the processing of marine resources is much less common and is often indirect. Large-scale processing plants are virtually absent from the archaeological record and there are few studies of the remains of fish and shellfish or of other material evidence relating to fish preservation and commerce. Yet written evidence on the subject abounds, but places heavy emphasis on consumption and commerce rather than production. This paper describes the evidence and explores possible reasons for this imbalanced representation in an attempt to assess the actual importance of the processing of marine resources across the whole Mediterranean region. Issues discussed are the shifting emphasis on fish processing across space and through time, archaeological research agendas and methodologies, resource availability and abundance and, finally, issues of scale and visibility.     

Ancient plant use and palaeoenvironmental analysis at the Gumugou Cemetery,Xinjiang, China: implication from desiccated plant remains

The Gumugou Cemetery is located in the Lop Nor region of the Tarim Basin in Xinjiang, northwest China. Radiocarbon dating found the site to be 3800 years BP. Due to the exceptionally arid conditions, most of the plant remains are well-preserved. Morphological and anatomical studies suggest that the plant remains consist of: Triticum cf. aestivum, Phragmites australis, Populus euphratica, Ephedra sp., as well as Typha sp. These ancient plants imply that the indigenous people lived in oases surrounded by extensive desert. Caryopses of T. cf. aestivum might have been used as funeral objects of the mummies as well as a subsidiary food source of the inhabitants, while the wild plants were used in other aspects of daily life.     

Global Liquidity,the Private Sector and Debt Sustainability in Sub‐Saharan Africa

This article analyses the effect of changes in international financial markets on the debt dynamics in sub‐Saharan Africa in recent years. A key development is the rise of the private sector as both a lender and a borrower in African debt markets, a process that is associated with the growing integration of the region into global financial markets. The article argues that the Debt Sustainability Framework of the International Monetary Fund and World Bank has taken some steps to account for this growth of private sector, cross‐border debt, but such steps still fall short of what is needed. A full appreciation of the importance of private debt implies, first, that debt sustainability in sub‐Saharan Africa be understood in the context of countries’ integration in global financial markets and the global liquidity cycles that characterize those markets and, second, that the interplay between private and public debt be monitored in order to provide a fuller picture of the impact of private sector debt on fiscal sustainability.     

Populations and Climatic Evolution in North Tropical Africa from the End of the Neolithic to the Dawn of the Modern Era

At the end of the Neolithic Era, during the third millennium BCE, there were fewer humid periods, and the sub-Saharan and Sahelian zones from the Atlantic to Lake Chad assumed their current geographical form. Since then, the climate has continued undergoing major variations. The succession of climatic episodes, humid or dry, is pointed out along with the episodes’ complex interactions. These variations are placed in parallel to cultural phases of evolution in archaeology and history. Climate-related events have always had heavy consequences on the peopling of this vast region, often subject to extreme natural conditions. The relative synchronism between the principal cultural trends from west to east across the Sahel seems to have often been subject to swings in the climate and the resulting environmental changes.