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以安徽铜陵凤凰山矿田为例,通过综合地质研究,构建了矿体定位预测概念模型。在地质勘探数据和物化探数据集成的基础上,采用三维地质建模技术,对地层、构造、岩浆岩、矿体等地质体进行了推断和圈定,构建了地质体的线框模型与块体模型。基于定位预测概念模型和地质体三维块体模型,通过地质空间定义和立体单元划分,建立了岩体及其表面形态起伏、接触带、地层、褶皱、断层等控矿地质因素的三维栅格场模型。在定量分析控矿地质因素与矿化分布的关系的基础上,建立了反应这种关联关系的矿体立体定量预测模型。预测模型提供矿田深部(-1000m标高以上)所有50m×50m×50m立体单元的铜品位、铜金属量和含矿概率的预测结果。基于预测结果圈定了4个深部找矿立体靶区,为深部找矿工程的设计、布置提供尚未发现的隐伏矿体的位置、品位、金属量等信息的指导。 相似文献
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以安徽铜陵凤凰山矿田为例.通过综合地质研究,构建了矿体定位预测概念模型.在地质勘探数据和物化探数据集成的基础上,采用三维地质建模技术,对地层、构造、岩浆岩、矿体等地质体进行了推断和圈定,构建了地质体的线框模型与块体模型.基于定位预测概念模型和地质体三维块体模型,通过地质空间定义和立体单元划分,建立了岩体及其表面形态起伏、接触带、地层、褶皱、断层等控矿地质因素的三维栅格场模型.在定量分析控矿地质因素与矿化分布的关系的基础上,建立了反应这种关联关系的矿体立体定量预测模型.预测模型提供矿田深部(-1000m标高以上)所有50m×50m×50m立体单元的铜品位、铜金属量和含矿概率的预测结果.基于预测结果圈定了4个深部找矿立体靶区,为深部找矿工程的设计、布置提供尚未发现的臆伏矿体的位置、品位、金属量等信息的指导. 相似文献
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为查明内蒙古某萤石矿的准确品位,向仲裁机构提供客观公正公平的萤石矿品位鉴定报告,在广泛收集前人资料信息,深入研究矿区萤石矿石品位计算方法的基础上,提出了采用单工程萤石矿品位对比的鉴定方法,即对所有单个工程中萤石品位大于等于边界品位的样品,以样长进行加权平均,求得2013年详查工作与鉴定工作中单个工程的萤石品位大于等于边界品位的样品加权平均品位和样品长度,按照单个工程,采用一一对应的方法对比分析,以此鉴别判断2013年详查工作提供的相关地质数据的准确性。该方法重在进行单工程品位和样长的对比,不进行复杂的矿体圈定连接,规避人为主观因素影响。对比结果具有科学性、客观性、唯一性,在内蒙古某萤石矿品位鉴定工作中应用效果较好。 相似文献
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秘鲁Don Javier斑岩型铜钼矿床矿化蚀变特征及矿床三维勘查模型 总被引:4,自引:3,他引:1
Don Javier铜矿床位于秘鲁南部著名的古近纪铜钼矿床成矿带的北端,是该成矿带新发现的一个斑岩型铜钼矿床。初步探明其铜金属量为129.18万吨,平均品位0.43%;伴生钼金属量为5.23万吨,平均品位0.017%;伴生银金属量为800.56 t,平均品位2.64 g/t。文章重点分析该矿床成矿地质特征及成矿规律,明确矿床周边的找矿方向,以期增加资源量满足后续评价开发的需求。通过研究Don Javier矿床的成矿地质条件、矿化蚀变特征及其三维空间分布规律,认为其主要矿体发育于绢英岩化英安斑岩内。另外,通过建立矿床地质、蚀变三维模型,结合前人的地表物探、化探成果,认为矿体北东侧及南东方向具有很好的找矿前景。 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 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
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正20141768 An Shaopeng(Institute of Rock and Soil Mechannics,Chinese Academy of Sciences,Wuhan 430071,China);Wei Lide Experimental Study on Mechanical Behavior of Xigeda Formation Siltstone and Structure Interface(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,21(5),2013,p.702-708,9illus.,1 table,16 refs.) 相似文献