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The origin of micro-relief on till sheets of the Conestogo lake area, Ontario, is discussed. The micro-relief constitutes an extensive, integrated system of swales that represents a drainage network which functioned under periglacial conditions in the late Wisconsinan. At many locations within the study area, this drainage exploited the micro-relief of polygonal patterned ground. The present low-order stream system has resulted from contraction of this Pleistocene system. A qualitative modification of Devries' Groundwater Outcrop Erosion Model is developed to explain drainage evolution at the Pleistocene-Holocene transition. Today, the swales are routes for surface and shallow sub-surface flow from the gently sloping interfluves of the study area.
L'origine du microrelief des dépôts de moraines de fond dans la région du lac Conestogo, Ontario, est discutée. Le microrelief constitue un système de bas-fonds extensif et intégrè qui représente un réseau de drainage qui fonctionnait sous des conditions périglaciaires pendant le Wisconsinien supérieur. Ce drainage a emprunté le microrelief des sols polygonaux à plusieurs endroits à l'intérieur de la région d'éude. le système actuel de rivières de bas ordre est le résultat de la contraction de cet ancien système du Pléistocène. Une modification qualitative du modèle de Devries d'érosion par affleurement de la nappe souterraine (Groundwater Outcrop Erosion Model) est développée pour expliquer 1'évolution du drainage pendant la transition Pléistocene-Holocène dans cette région. Aujourd'hui, les bas-fonds forment des routes pour le ruissellement et I'écoulement hypodermique des interiluves à pentes douces de la région d'étude.  相似文献   
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Carbonized grains survive for millennia in many archaeological contexts. Their stable structure raises the possibility that they preserve biogenic strontium isotope signatures. This hypothesis was investigated using short‐term, laboratory experiments with modern grain immersed in Chalk solution. HCl leaching removed > 95% of secondary alteration from charred grain, and isotope ratios close to the starting value were recovered. This could not be achieved with uncharred grains. HCl leaching of archaeological carbonized grains produced comparable levels of decontamination. Although preliminary, these results suggest that strontium isotope analysis of archaeological carbonized grains from calcareous burial contexts could be used to investigate ancient trade and agriculture.  相似文献   
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Using a recently developed measure of multidimensional poverty, the Freedom Poverty Measure, the difference in poverty rates of major cities, inner regional, and other areas have been compared. The population living in ‘other areas’ had the highest proportion of individuals living in freedom poverty. Those in inner regional areas (P = 0.0303) and those in major cities (P < 0.0001) were significantly less likely to be in freedom poverty than those in ‘other areas’. However, when breaking the analysis down to look at the different poverty rates for different age groups across the three regional classifications, it was found that there was no difference in the likelihood of being in freedom poverty between children in inner regional and other areas, adults in inner regional and other areas, and older people in inner regional and other areas. This may indicate that the disadvantage experienced by those living in regional centres has been overlooked in the past and is an emerging contemporary issue for health and education equity as well as economic equality.  相似文献   
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Locating the proper relationship between material and cultural aspects of human life has been an enduring, discipline-defining, and divisive problem in anthropology. Recent studies of the local effects of globalization have exacerbated the divide. Although case studies seem to have lost their luster for many anthropologists, the renewed ethnography considered in this review demonstrates that local research can clarify international economic processes. When people choose to make foreign commodities part of their lives, the results are neither inevitable nor predetermined. Local and global, cultural and material, never totally subsume each other.  相似文献   
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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.  相似文献   
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