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41.
Most researchers in the Proterozoic eastern Mt Isa Block, NW Queensland, Australia, favour magmatic fluid and salt sources for sodic‐(calcic) alteration and iron oxide–copper–gold mineralization. Here we compare spatial, mineralogic and stable isotope data from regional alteration assemblages with magmatic and magmatic‐hydrothermal interface rocks in order to track chemical and isotopic variations in fluid composition away from inferred fluid sources. Tightly clustered δ18O values for magnetite, quartz, feldspar and actinolite for igneous‐hosted samples reflect high temperature equilibration in the magmatic‐hydrothermal environment. In contrast, these minerals record predominantly higher δ18O values in regional alteration and Cu–Au mineralization. This dichotomy reflects partial equilibration with isotopically heavier wallrocks and slightly lower temperatures. Increases in Si concentrations of metasomatic amphiboles relative to igneous amphiboles in part reflect cooling of metasomatic fluids away from igneous rocks. Variations in XMg for metasomatic amphiboles indicate local wallrock controls on amphibole chemistry, while variations in XCl/XOH ratios for amphiboles (at constant XMg) indicate variable aH2O/aHCl ratios for metasomatic fluids. Biotite geochemistry also reflects cooling and both increases and decreases in aH2O/aHCl for fluids away from plutonic rocks. Decreased aH2O/aHCl ratios for metasomatic fluids reflect in part scavenging of chlorine out of meta‐evaporite sequences, although this process requires already saline fluids. Local increases in aH2O/aHCl ratios, as well as local decreases in δ18O values for some minerals (most notably haematite and epithermal‐textured quartz), may indicate ingress of low salinity, low δ18O fluids of possible meteoric origin late in the hydrothermal history of the region. Taken together, our observations are most consistent with predominantly magmatic sources for metasomatic fluids in the eastern Mt Isa Block, but record chemical and isotopic variations along fluid flow paths that may be important in explaining some of the diversity in alteration and mineralization styles in the district.  相似文献   
42.
幕末为挽救农村的危机而由二宫尊德创立的报德运动,在明治维新后持续的农村疲敝中,由他的弟子一直继承下来。特别是在日俄战后的地方改良运动中,报德运动从自发的民间组织的行为变成了内务省主导下的运动,报德思想也成了地方改良运动的指导理念。  相似文献   
43.
马克思学说研究会与中国共产主义组织的起源   总被引:2,自引:0,他引:2  
李丹阳 《史学月刊》2004,3(6):51-59
以往若干史著记载了李大钊曾于1918年在北京发起过马克思学说研究会,但由于史料缺乏,近来多被学者否认。笔者根据当时的报载文章、早年俄国顾问撰写的《中共简史》,并参以当事者的回忆,认为马克思学说研究会确曾于1918年底至1919年上半年存在过。这个研究会的产生涉及苏俄人士与中国进步知识分子的初期联系与活动。虽然该会的参加人员、活动时间、组织形式都不怎么固定,是一个十分松散的非正式学会,却在中国开启了组织马克思主义团体的先河,成为中国共产主义组织的源头。  相似文献   
44.
印度农民政治文化变迁和现代民族运动的兴起   总被引:1,自引:0,他引:1  
王立新 《史学月刊》2004,11(12):67-73,124
印度社会精英对英国统治态度的改变是20世纪上半期印度群众性民族运动兴起的一个关键性政治变量。但是,在印度这样的农民社会里,农民(包括农村手工业者)一直是主导的社会群体,他们的政治态度不能不影响整个印度政治社会的发展。传统上的印度农民是政治冷漠主义者,他们对村社之外的全国性政治过程并不关心,但是在英国的统治下,一系列的经济、社会和政治变迁却使印度农民和全国性政治过程有了密切的利害关系,他们和印度的社会政治精英在反对英国统治方面具有了共同利益。这正是使得他们积极响应以甘地为首的印度政治精英的号召,参加印度现代民族运动,为印度民族独立和解放做出巨大历史贡献的根本原因。  相似文献   
45.
ABSTRACT Water is a resource that both unites and divides people in the Upper Hunter Valley of New South Wales, where many communities are facing the prospect of large‐scale open‐cut coalmining developments on productive mixed use land, or already live in proximity to mines and power stations. This article analyses conflicts over a proposed coal mine at Bickham in the Upper Hunter Valley, by contrasting the various protagonists' discourses of water scarcity, supply, and connectivity. It examines the ways in which the terms of opposition are narrowed to the arena of state and industry supported science and economic development, marginalising other cultural values and environmental ethics that are integral to opponents' discourses. Opponents have achieved some measure of success through contestation of the uncertain science of hydrological modelling, bolstered by the context of drought and increasing public acceptance of climate change science.  相似文献   
46.
ABSTRACT Set in the Aramia River basin, this article explores the intimate and interactive relationship between communities in Western Province, Papua New Guinea, and the water that dominates the environment in which they live. Located amongst tidal rivers, creeks and lagoons, Gogodala villages sit high on ‘islands’ of land. In this environment, water is the site of seasonal change and the space of movement. The Aramia River is synonymous with an ancestral figure called Sawiya who travelled in her canoe, naming, creating and populating the water and land of the area. As the ‘mother of all fish’, Sawiya controls the movement and abundance of fish and other aquatic resources. Water is embodied in Sawiya, whose capacities to both nourish and punish are the basis of seasonal variations in fish, and in the colour and clarity of water in the local lagoons and rivers. Set against the backdrop of the Ok Tedi Mine and recent logging operations on the Aramia, the article explores some of the ways in which water and its resources are defined and experienced in this rural community and the impact this may have on the exploitation and development of natural resources in PNG.  相似文献   
47.
Taking the popularization of bicycles in modern Shanghai as an example, this article discussed the interrelationship between the development of instruments and the users by analyzing the expansion of city space, formation of the city time rhythm, changes in consumption mode of different social classes, and the competition of various transportation tools, etc. The influences on the transformation of social life in Shanghai and other cities of China were also revealed. __________ Translated by Zhou Weiwei from Shilin 史林 (Historical Review), 2007, (1): 103–113  相似文献   
48.
This paper poses the question: what is the role of cultural capital at the interface of environment, economy and society, and what other factors affect this role? A review of Pierre Bourdieu's concept of cultural capital and later developments of this concept by ecological economists serves to establish the values that comprise cultural capital, and its relationship to natural capital and economic capital. These relationships are investigated through a case study of a small coastal community, Coles Bay and the Freycinet Peninsula, in Tasmania. Three study groups are identified which comprise the communities associated with this place; long‐term residents, repeat visitors and tourists making a single visit. The complexity of the relationships of people with place are revealed through an examination of the different forms of capital (social, cultural and economic) relating to the different study groups. The dynamics of the social, economic and environmental realities of Coles Bay and the Freycinet Peninsula are seen to be complex and interlinked, with the potential to provide a model for action in communities of similar character and location.  相似文献   
49.
Hamstrung by weak institutions that undermine conventional environmental regulatory tools, policymakers in developing countries are increasingly turning to voluntary approaches. To date, however, there have appeared few evaluations of these policy experiments. To help fill this gap, we summarize arguments for and against the use of voluntary regulation in developing countries, review the nascent literature on the topic, and present case studies of agreements negotiated between regulators and leather tanners in an industrial city in Mexico, a national environmental audit program in Mexico, and a national public disclosure program in India. Admittedly few in number, these three case studies nevertheless suggest that although voluntary environmental regulation in developing countries is a risky endeavor, it is by no means doomed to failure. The risks can be minimized by emphasizing the dissemination of information about pollution and pollution abatement options and by avoiding voluntary approaches in certain situations—those where regulatory and nonregulatory pressures for improved environmental performance are weak and where polluters can block quantified targets, individual sanctions for noncompliance, and other widely accepted prerequisites of effective voluntary initiatives.  相似文献   
50.
本文以上海老城厢城市景观演变的历史过程为主线,分析了主导这一过程的驱动因素及其相互间的关系。在人为侵占与河浜自然属性的交互作用下,"因浜成路"一直是上海老城厢独具特色的城市扩展方式;19世纪下半叶,传统的环境基础加上西方公共卫生观念的介入,使原来民间层面上的"因浜成路"发展为官方主导下的"填浜筑路",主干河浜消亡的速度骤然加快。这虽然局部改善了老城厢的市容与卫生状况,却对整体的水网生态和后来的城市环境造成了不利影响。这一过程中的内在规律,恰从区域可持续发展的角度,对城市化进程中人与自然间的耦合关系和互动尺度做出了注解,因而具有一定的启发意义。  相似文献   
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