A 6000 Year‐old Fossil Dugong from Botany Bay: Inferences about Changes in Sydney's Climate,Sea Levels and Waterways

The excavation in the 1890s of a skeleton of the warm‐water marine mammal Dugong dugon, associated with Aboriginal artefacts, from a Botany Bay salt marsh, marked the beginning of speculation about climate and sea level change in Australia over the period of human occupation. The dugong bones have recently been dated, giving a conventional ¹⁴C age of 5520±70 years BP, which is consistent with three older ¹⁴C dates for a layer of buried trees that underlies much of the north Botany sediments. The carefully drawn cross‐sections of depositional strata produced by the original discoverers allow further interpretation of the pattern of Holocene sea‐level fluctuations in the Sydney region. Layers of estuarine sediment, such as the one containing the dugong skeleton, are inter‐bedded with peat layers containing in situ roots and stumps, suggesting that the site alternated between sub‐aerial exposure and submergence throughout the Holocene. The presence of the dugong is suggestive of warmer conditions, and its inland location indicates a more extensive Botany Bay in the recent past. This is in agreement with other work from southern New South Wales describing both warm‐water marine species and higher sea levels several thousand years ago.

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MECHANICAL PERFORMANCE OF QUARTZ-TEMPERED CERAMICS: PART I,STRENGTH AND TOUGHNESS*

The effect of quartz temper on the physical and mechanical properties of clay ceramics and the elucidation of the underlying mechanisms that are responsible for these effects are presented here. Characteristics studied included bulk density, open and closed porosity, density of impervious portion and fracture morphology. Mechanical behaviour was studied by measuring energy dissipation during fracture, Young's modulus, initial fracture toughness and strength in flexure. The significant increase in toughness with quartz volume fraction is explained by the development of a model that accounts for the crack distribution around the grains. The archaeological implications of the work are discussed on the basis of all the parameters that might affect the potter's choices of raw materials.     

Between Worlds: Considering Celtic feminine identities in The Secret of Roan Inish

This article explores the ways in which Celtic oral traditions concerning the 'place' of women are replayed within a contemporary textual form, namely the 1995 film, The Secret of Roan Inish. Through an examination of the representation of gender relations within the film, we address how the incorporation of mythic elements is intended to provide a sense of female 'empowerment'. While the film has been praised for its positive portrayal of Irish Celtic women, we suggest that the various qualities of strength associated with the female lead characters are expressed within the context of a discursive framework that valorizes certain roles and behavior as 'natural' at the expense of other modes of life, and, further, ties the construction of subject identities into a fixed, or essentialist, notion of 'place'. Rather than presume that this filmic vision of Irish Celtic feminine identities is intrinsically regressive, however, we note that in our act of viewing Roan Inish those identities are recontextualized further in, we hope, a progressive, post-structuralist manner.