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山西省是国内铝土矿保有资源量最多的省份,但铝土矿资源保证程度低,难以满足已建成的铝土矿消耗企业对铝土矿资源的需求。本文在总结山西铝土矿含矿岩系资源现状基础上,系统论述了近年在山西铝土矿含矿岩系地质勘查中的新发现、新手段、矿石加工的新技术、含矿岩系"三稀"元素以及成矿物质来源等方面取得的新认识和新进展,提出了山西铝土矿含矿岩系资源评价程度低、资源工业利用率低、无矿工程以及赤泥综合利用等方面存在的问题,以期对山西铝土矿含矿岩系资源勘查开发提供参考。 相似文献
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贵州省是我国的铝资源大省,然而当前贵州铝工业蓬勃发展的背后,不仅面临铝土矿资源紧缺压力,而且铝工业发展水平甚至落后于没有铝土矿资源支撑的其它省区。通过对贵州铝土矿资源开发与利用的分析找到了原因,并从发展生态矿业,建立现代矿业发展模式的角度,提出了保障贵州省铝土矿资源可持续利用及建立生态文明的策略。 相似文献
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贵州铝土矿资源特征及矿业可持续发展建议 总被引:7,自引:2,他引:5
贵州省铝土矿资源丰富,但不可盲目乐观。本文从贵州省铝土矿地质特征、资源分布等特点,分析贵州铝土矿资源在开发利用中存在资源浪费、可利用度低、采矿加工成本高等方面问题,针对面临的问题,提出了贵州铝土矿资源可持续利用的相关建议。 相似文献
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山西省铝土矿资源量约占全国铝土矿资源总量的40%以上,铝土矿资源潜力评价(预测)工作中铝土矿预测地质变量的选取至关重要,本文逐一对铝土矿预测变量进行分析,提出了较为合理的预测研究变量。 相似文献
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通过对河南省目前铝土矿的保有资源储量、影响保有资源储量的因素、实际可供开采的保有资源储量和现有铝土矿的实际开采产能的分析估算,得出河南省现有铝土矿的保障年限。 相似文献
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重庆武隆-南川地区铝土矿资源丰富.其主要令矿屋位为下二逫统梁山组,通过对重庆地区已有铝土矿地质资料的分析,笔者总结了该地区铝土矿产出的地质特征,为今后铝土矿的工作提供了重要依据. 相似文献
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鲁宝地区铝土矿资源丰富,已探明储量3290万t,远景储量2000万t以上。本文分析了铝土矿资源及开采现状,结合我国铝工业发展现状及对氧化铝,原铝的需求状况,平顶山地区能源条件,利用矿床经济评价方法,对建立铝土矿矿山企业和氧化铝厂的可行性提出了看法。 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 Lozach 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