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我国是世界上铜资源较丰富的国家之一,全国铜总资源量达1.5亿t,据’96中国矿产资源报告,中国累计探明铜矿储量7176万t,保有储量6252万t。按照美国矿业局的标准,我国的保有储量大致相当于其储量基础,这样,我国的铜储量在世界上大致排列第三位,居智利 相似文献
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铜资源现状与发展态势分析 总被引：4，自引：0，他引：4
进入21世纪以来,全球矿业走出低谷,步入了新一轮矿业繁荣周期.铜作为一种重要矿种,在过去的十多年里,经历了空前的繁荣,铜矿勘查开发投入屡创新高,国际铜价在中国、印度等新兴经济体强劲需求的带动下,走向高位,甚至出现了过度金融化倾向,价格泡沫化严重.中国国内铜储量严重不足,对外依存度高达70％,外加国际铜价虚高,对中国贯彻落实“立足国内,充分利用国内国外两种资源市场”的战略方针提出了严峻挑战.文章较为系统地总结了全球铜资源的总体发展态势以及中国铜资源的基本现状和特点,并对未来十年中国铜资源的供需形势进行了预测,提出应立足国内,以地质找矿新机制为核心,加大后续勘探开发投入力度,将近十年来地质大调查查明的铜资源储量转换为铜储量,提升资源保证程度.同时,针对国际铜价出现的重大转变,应充分利用市场机制实现国家和铜产业利益的最大化. 相似文献
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蒙古矿产勘查与开发现状评述 总被引：9，自引：0，他引：9
蒙古位于俄罗斯与中国之间,各类矿产资源十分丰富,是落实"两个市场、两种资源"构思的理想地域。随着蒙古南部地区欧玉陶勒盖巨型铜—金矿床和白山特大型铜—锌矿床的发现,该国矿产资源的成矿理论研究和找矿勘查工作备受国际矿业界关注,并且取得了令人瞩目的进展。笔者等对蒙古矿产资源分布特征和新修改矿业法要点进行了总结;对重要矿山开发现状和矿业未来发展趋势进行了讨论,以便提升我国与蒙古接壤地区成矿理论研究水平,有力推动矿产资源潜力评价工作进行,进而为实施我国矿业企业"走出去"全球矿产资源战略提供科学依据。 相似文献
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印度已经成为全球重要的国家之一。文章系统分析了印度的人口、经济发展特点,印度在过去发展过程中能源、铁、铜、铝资源的消费历史。并选用了合理的经济分析模型、资源需求预测方法,参考权威机构的研究成果,如资源需求"S"形规律、"GDP增速‘钟’形规律"以及格罗宁根研究中心(简称GGDC)、世界银行等机构的数据,科学、合理地预测了印度人口、经济及资源需求。认为:1)在工业化的带动下,印度经济具有再创神话的潜力;2)印度对能源、铁、铜、铝的需求将随着工业化进程的推进而快速上升,印度将成为继中国后拉动全球资源需求的"新引擎";3)印度发展不仅带给我国产业升级带来了新机遇,同时也是我国强有力的竞争者,比如在资源获取方面的竞争。因此我国企业应加强自身的核心竞争力,在印度发展的过程中获得好的机会成长。 相似文献
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全球金融危机是经济发展周期的重要拐点,对全球和我国不同产业的发展会产生不同的影响。贵州总体上具有资源型经济结构,其中矿业产业占有重要的地位和作用。由于全球金融危机影响,矿业的生存空间被严重压缩,贵州虽然地处内地,仍然难以幸免。但不同类型的资源产业所受到的影响差异很大,其中,内向型为主的煤炭产业所受影响小,而外向型为主的磷及磷化工产业和铝及铝加工产业所受影响明显。通过深入分析全球金融危机前后贵州铝及铝加工产业的发展状况不难看到,金融危机在带来矿产品价格下降、矿产企业利润大幅度下降等不利影响的同时,也为解决资源浪费严重和后备资源保障程度下降、矿山整合与铝土矿资源集中提供了有利时机,还使得贵州铝工业发展相对滞后和产品附加值不够高的现状有望改善,促使政府和企业朝着生态矿业和节能减排的方向发展。为了尽快摆脱金融危机的负面影响,抓住有利因素迅速壮大贵州的矿业产业,一方面应大力支持与鼓励地勘单位、矿山企业、重点氧化铝、电解铝企业和铝加工等后续企业大跨度整合,使资源的勘探、采掘、加工与利用等构成有机的整体,发展生态矿业;另一方面应积极盘活贵州地勘队伍多年来积累形成的矿产信息资源等无形资产,同时创造条件,支持与鼓励我省地勘队伍走出国门,到其它省区和国外寻找新的矿产地和获取矿权。另外,还须通过完善矿权管理,进一步整顿矿业秩序,加大环境保护与污染治理力度等措施,为矿业企业的健康发展创造良好规范的市场环境。 相似文献
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智利小规模采选业因分布分散且缺乏相应的环保技术与资金投入,其对环境造成了一定的影响。在智利法律系统监管和支持下,该小规模采选业得到有序发展。同时,小规模金属采选业与智利法律规定的大中型矿产开发项目须完成试验性工业开采(即小规模开发实验)存在一定联系。本文通过调查智利中北部第三、第四和第六区小型开采规模的铜、金和银矿山,分析其生产经营过程中对环境的潜在影响因素,剖析小规模金属选场对智利环境带来的影响,总结金属矿小规模采选业的规范性运营方式,找出法律规定与产业运营的内在联系。建议我国企业在智利进行矿产勘探和可行性研究中重视小规模采选试验与规模性勘查工作的合理有序结合。 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
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Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozac&#x;h Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ1 roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003). 相似文献
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正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level 相似文献
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正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7), 相似文献
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正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci- 相似文献
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正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli- 相似文献
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正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.) 相似文献
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正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861 相似文献