共查询到20条相似文献，搜索用时 46 毫秒
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甲查地区银多金属矿床部位出现多组断裂构造的“交汇结”,揭示隐伏岩体的环形构造和负磁异常;Ag、Pb、Zn、Cu的化探异常及其Ag-Pb、Ag-Zn、Ag-Cu元素对高值的正相关点群和定量化关系表现的Ag-Pb-Zn元素组合异常等多元的地化特征标志,建立甲查地区银多金属矿的多元地化找矿组合标志,预测矿床边深部和新找矿地段,提出进一步找矿的建议. 相似文献
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新疆阿舍勒铜矿GIS预测时的找矿有利度和空间相关性分析 总被引：2，自引：0，他引：2
以新疆阿舍勒地区铜矿GIS预测为实例,说明线型异常和面型异常的找矿有利度分析方法,并给出断裂、有利地层和物化探异常找矿有利度分析的结果.给出计算空间相关性的公式,并研究了不同元素化探异常的空间相关性.最后,研究了不同元素的组合异常,论证了在矿产预测中应用组合异常的必要性并利用GIS进行了找矿有利地段的圈定. 相似文献
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新疆塔尔巴哈台-萨吾尔地区多重分形地球化学异常提取及成矿预测 总被引：2，自引：2，他引：0
塔尔巴哈台-萨吾尔地区位于中国新疆西北部,目前已发现若干处铜、金矿床,具有很好的成矿潜力。成矿定量预测方法常被用于综合成矿标志信息,进行成矿远景区的定量预测和评价。本文首先结合多重分形理论-奇异性指数模型进行地球化学异常提取,之后通过对区域成矿条件进行综合分析,基于地球化学异常以及构造、岩浆岩、地层与矿化的相关关系构建了塔尔巴哈台-萨吾尔地区铜-金成矿预测模型;研究进一步基于新近的找矿成果,以已知矿床和新近发现的矿化点信息作为依据,利用证据权重方法对研究区铜-金矿化的远景区进行了定量预测。预测结果显示出塔尔巴哈台-萨吾尔地区具有良好的找矿前景,区内存在多个新的成矿远景区,可作为新的找矿勘探的目标,开展进一步找矿勘查工作。 相似文献
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宿州市栏杆-褚栏地区金刚石勘查中磁异常特征研究与找矿 总被引：3，自引：0，他引：3
为在安徽省宿州市栏杆-褚栏地区寻找金刚石矿,深入研究该地区的地磁异常特征,圈定有意义的地磁异常,结合航磁异常、地磁异常、深源磁场剖析与已知矿体之间的对应关系,掌握基性、超基性岩脉的预测及其分布规律,进一步指出找矿方向。 相似文献
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滇东地区铂钯无模型定量成矿预测与评价 总被引：3，自引：0，他引：3
文章对滇东地区在分析、建立致矿地质异常概念模型的基础上,以东川-曲靖图幅为例,探讨了采用铂钯地球化学异常与各种成矿有利地质标志相结合计算成矿有利信息量和单元总信息量,进行无模型指导下的定量成矿预测和评价的方法,圈定、评价了铂钯找矿可行地段5处,找矿有利地段3处,认为有一定的找矿潜力,可供找矿解剖验证.同时指出了该方法普遍适用于其它矿种的预测、评价及其诸多优点. 相似文献
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《物探与化探》2016,(3)
怀化地区金矿成矿研究程度低,为提高该地区研究级别,首次采用了基于MRAS的证据权重法对该地区金矿进行成矿预测。在充分收集、整理该地区各种地质、矿产、构造、物探、化探和遥感资料的基础上,建立怀化地区金矿多元地学空间数据库。在系统总结怀化地区金矿成矿规律的基础上,重建了该地区的金矿找矿模型,提取并构置了新元古代地层、断裂、航磁-60~0 n T、Au化探异常、Cu化探异常、Pb化探异常、Sb化探异常、Zn化探异常、岩浆岩、遥感推断环形构造、遥感推断线性构造、重力5~20 m Gal和30~55 m Gal、Au矿物重砂异常和其他矿物重砂异常等14个预测要素作为证据因子。预测网格单元划分采用2.5 km×2.5 km并进行了后验概率计算,根据后验概率计算值的分布特征将怀化地区的预测区块划分为A、B、C三个等级,并圈定了10个找矿靶区。根据找矿靶区的面积、已发现矿床(点)的数量和后验概率平均值等对找矿靶区进行了分级,最终将找矿靶区分为Ⅰ级找矿靶区4处,Ⅱ级找矿靶区3处,Ⅲ级找矿靶区3处。 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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正Acta Geographica Sinica ISSN0375-5444 CN11-1856/P Acta Geologica Sichuan ISSN1006-0995 CN51-1273/P Acta Geologica Sinica ISSN0001-5717 CN11-1951/P Acta Geologica Sinica(English Edition)ISSN1000-9515 CN11-2001/P Acta Geoscientica Sinica ISSN1006-3021 CN11-3474/P Acta Micropalaeontologica Sinica ISSN1000-0674 CN32-1189/Q 相似文献
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正20141864 Deng Mengchun(Institute of Exploration Technology,CAGS,Chengdu 611734,China);Huang Shenghui Rock Sample Collection and Division Technologies for Air Reverse Circulation Sampling Drilling(Exploration Engineering,ISSN1672-7428,CN11-5063/TD,40(7),2013,p.73-76,80,16 illus.,5 refs.) 相似文献
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正20142366Bi Yuanqing(Institute of Geophysical and Geochemical Survey Technology of Anhui Province,Hefei 230022,China);Fang Junhua Analysis of Ore-Prospecting Potential in the Taojiaxiang Mining Site,Zongyang County(Geology of Anhui,ISSN1005-6157,CN34-1111/P,23(4),2013,p.256-260,5illus.,10refs.) 相似文献
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正20140786Deng Zhenping(Institute of Karst Geology,Chinese Academy of Geological Sciences,Guilin 541004,China);Yang Wen-qiong Application of Stripping Voltammetry with a Solid Amalgam Electrode for Determination of Copper in a Tracer and Groundwater Tracing Experiment(Rock and Mineral Analy- 相似文献
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正20141283 Bai Daoyuan(Hunan Institute of Geological Survey,Changsha 410016,China);Zhong Xiang Nature,Origin and Tectonic Setting of Jinzhou Basin in the South Segment of Xuefeng Orogen(Geology in China,ISSN1000-3657,CN11-1167/P,40(4),2013,p.1079-1091,10 illus.,47 refs.)Key words:foreland basins,strike-slip faults,Hunan Province 相似文献
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正20141900Lan Xianhong(Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology,Ministry of Land and Resources,Qingdao 266071,China);Zhang Zhixun Geochemical Characteristics of Trace Elements of Sediments from Drillhole SFK-1 相似文献
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正20141074Bao Xijie(Research Institute of Exploration and Development,Daqing Oilfield Company,PetroChina,Daqing 163712,China)Gather Optimal Processing and Application Effect of Prestack AVA Instantaneous Inversion 相似文献
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正1.HYDROGEOLOGY20142452Chang Chengcao(Institute of Coalfield Geological Survey and Design of Jilin Province,Changchun 130062,China)Hydrogeological Type Division of Coal Mine No.2Mine in Yitong Manchu Autonomous County,Jilin Province(Jilin Geology,ISSN1001-2427,CN22-1099/P,32(4),2013,p.129-131,3refs.) 相似文献