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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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E. A. REBER  J. P. HART 《Archaeometry》2008,50(6):999-1017
Analysis was performed on absorbed and visible residues from 21 New York State prehistoric pottery sherds dating from 2905 ± 35 bp (Intcal04) (1256–998 cal bc ) to 425 ± 40 bp (Intcal04) (1417–1626 cal ad ). The use of pine resin was detected in 10 of 12 absorbed residue samples and 11 of 17 sherds subjected to visible residue analysis. It seems likely that the pots were resin‐sealed to make them more impermeable, constituting the first chemical evidence of extensive resin‐sealing in North America. A comparison of the results of absorbed and visible residues from eight of the sherds indicates that the two kinds of residue provide complementary evidence of vessel use.  相似文献   
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This paper examines the concept of metropolitan dominance as measured by the concentration of corporate activity in large urban centres in the Canadian urban system. Specifically, it explores the extent of corporate concentration in various sectors of the economy; isolates those urban centres in which that concentration occurs; and identifies the extent and location of international penetration of the Canadian economy.
Dans cette étude, nous examinons le concept de l'importance des métropoles en fonction de la concentration des diverses entreprises dans le systeme urbain du Canada. Plus spécifiquement, nous examinons le degré de cette concentration dans divers secteurs économiques; nous isolons les centres urbain ou a lieu cette concentration; nous identifions l'étendue et les points de pénetration internationale dans l'économie du Canada.  相似文献   
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In almost four decades Jack Goody has published a score of books seeking to explain the divergence of Africa from the Eurasian continent, and latterly to refute historical claims of western superiority to Asia. Since the millennium, he has sought to clarify his own vision of modern capitalism at a time when western hegemony is coming under pressure from globalization. Yet this achievement has not received the recognition from anthropologists that it deserves. This article, in reviewing six books published during the last decade, makes a case for reassessing Goody's project from the mid-1970s until now. It singles out two books for special attention, The Theft of History and his latest volume, Metals, Culture and Capitalism. A consistent theme of his recent work is to juxtapose his own account of the history of western capitalism with those of Marx, Weber and other writers in the classical tradition of social theory. Jack Goody remains to this day an anthropologist whose sensibility was formed by long-term ethnographic fieldwork. But he knew that, if he aspired to throw light on the human predicament as a whole, he would have to become a world historian too.  相似文献   
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