Testing the ‘Laacher See hypothesis’: tephra as dental abrasive

In a series of recent studies, changes in material culture and settlement pattern in the Late Glacial of Northern Europe have been linked to the eruption of the Laacher See volcano. This eruption occurred c. 13,000 years ago towards the end of the Allerød chronozone. It is argued that the tephra fall-out from this eruption set in motion significant demographic fluctuations along the northern periphery of Late Glacial human settlement and that these led to a number of material culture transformations. In particular, the emergence of the regionally distinct techno-complexes with large tanged points – the Bromme culture in southern Scandinavia and the Perstunian culture in northeastern Europe – and the temporary abandonment of central European regions are thought to relate to this eruption. While numerous archaeological datasets are in accord with this ‘Laacher See hypothesis’, the forcing mechanism or mechanisms that brought about these archaeologically visible changes have remained largely unexplored. A particular challenge is to explain how some of the culture-historical effects of the Laacher See eruption seem to change or become more pronounced with distance from the eruptive centre. We here investigate one potential middle-range link between the Laacher See eruption and Late Glacial fauna and foragers: tephra as dental abrasive. We use instrumented nanoindentation to quantitatively investigate tephra from a number of sites covering the medial and distal fall-out zones as well as the dental enamel of Homo sapiens and key prey species of Late Glacial foragers. Our results show that the Laacher See tephra contained particles roughly twice as hard as even the hardest portions of any of the teeth investigated. We also suggest that fluoride-induced weakening of dental enamel may have further aggravated tooth wear. These mechanisms may have acted in concert to produce elevated levels of, in particular, animal mortality, which in turn may have led to an abandonment of the affected landscapes.     

苏联社会文化定式的形成、特点和演变

文化定式是指在跨文化交际过程中,人们将具有相同特征的一群人或者任何民族、种族塑造成一定的形象。不同的社会文化背景和历史条件下,人们对事物的认识会发生变化,有时认识与真实情况完全相悖。苏联不同时期社会对外部世界的认识不一,根本原因在于官方宣传的引导,次要原因是社会传统和文化传承。既有的社会文化定式将长期影响人们对事物的认识。     

The Levanzo I Wreck,Sicily: a 4th‐century AD merchantman in the service of the annona?

Between 2005 and 2009 a deep‐water shipwreck was located, mapped, and partially excavated by a joint team from RPM Nautical Foundation and the office of the Soprintendenza del Mare, Sicily. Located off Levanzo Island, one of the Egadi Islands off north‐west Sicily, this wrecked merchantman revealed a mixed cargo of foodstuffs, coarseware, glass, and construction materials. The nature of the wreck‐site, its cargo, operational date, and find‐location indicate its likely association with the annona service which supplied Rome. © 2012 The Authors     

Nature and significance of the Howiesons Poort to post-Howiesons Poort transition at Klein Kliphuis rockshelter,South Africa

This paper considers the transition from Howiesons Poort to post-Howiesons Poort technologies at the rock shelter site of Klein Kliphuis, South Africa. The transition at this site is shown to be gradual, with incremental changes in material selection and in the size and shapes of flakes and cores. Implements which appear to blend characteristics of those distinctive of the earlier and later industries appear briefly at the mid-point of the transition. The results suggest that there is unlikely to have been an occupational hiatus between the Howiesons Poort and post-Howiesons Poort. Explanations for the Howiesons Poort phrased in terms of population expansion and contraction are also difficult to support. Technological changes at this time may relate to environmental variation, though the limited nature of terrestrial archives documenting changes in resource productivity necessitate that any such suggestion be made with caution.     

Resource nationalism or resource liberalism? Explaining Australia's approach to Chinese investment in its minerals sector

Since 2005, a burgeoning wave of Chinese investments has set off a new ‘minerals boom’ in the Australian iron ore and coal mining sectors. While normally a welcome development, the state-owned and strategic nature of the investors has raised concerns in Australia about how these should be regulated. As a result, in February 2008 the Australian government declared an intention to more closely screen foreign direct investment (FDI) from state-owned sources, which both supporters and detractors alike have claimed is evidence of ‘resource nationalism’ in Australia's approach towards its trade and investment relationships with China. This article challenges this understanding through an examination of the characteristics of Chinese mining FDI, the dilemmas these present to the Australian government, and the relatively restrained nature of its response. Through this, Australia's FDI policy is explained as a defensive move against the potential for strategic behaviour by Chinese investors resulting from their state ownership, rather than any national program to subject minerals trade and investment to political control. On this basis, the article argues that Australian government policy instead evidences a ‘resource liberalism’ approach, which intends to ensure that the governance of Australia's minerals trade and investment with China remain market-based processes.     

Honours for Glasgow staff

Political Geography of the Twentieth Century: A Global Analysis. Edited by Peter Taylor, 245 x 184 mm, xiii + 269 pp, Belhaven, London, 1993, pbk ISBN 1–85293–1973, £12.95.

Environmental Management in the Soviet Union. By Philip R. Pryde, 228 x 153 mm, xiii + 314 pp, Cambridge University Press, 1991, pbk ISBN 0–521–40905–5, £10.95.

Green Development: Environment und Sustainahility in the Third World. By W.M. Adams, 216 X 138 mm, 273 pp, Routledge, London, 1992, pbk, ISBN 0–415–08050–9, £12.99.

Debt and Development. By Stuart Corbridge, 230 x 153 mm, 231 pp, Blackwell, Oxford, 1993, hbk ISBN 0–631179046, £35.00, pbk ISBN 0–631181383, £10.99.

Contemporary Rural Systems in Transition: Vol. 1 Agriculture and Environment, Vol. 2 Economy and Society. Edited by I.R. Bowler, C.R. Bryant and M.D. Nellis, 240 x 160 mm, viii + 277 and xx + 314 pp, Wallingford, CAB International, 1992, hbk, ISBN 0–85198–813‐X (two‐volume set), £70.00.

Controlling Tropical Deforestation. By Alan Grainger, 232 x 152 mm, 310 pp, Earthscan, London, 1993, pbk, ISBN 1–85383–142–5, £14.95.

Deforestation in the Postwar Philippines. By David M. Kummer, 228 x 152 mm, xvii + 178 pp, University of Chicago Press (Geography Research Paper 234), Chicago and London, 1992, pbk, ISBN 0–226–46169–6, £13.50.

Nineteenth‐Century Cape Breton — A Historical Geography. By Stephen J. Hornsby, 230 x 153 mm, 304 pp, McGill‐Queen's University Press, Montreal and Kingston, 1992, hbk, ISBN 0–7735–0889–9, £33.95.

Challenge of the Natural Environment. By B.J. Knapp, S.R.J. Ross, and D. McCrae, 236 x 135 mm, 272 pp, Longman, Harlow, 1989, pbk, ISBN 0–582–35597–4, £9.99.