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高尖子地区位于内蒙古—大兴安岭褶皱系棋盘山中凹陷构造单元内,是冀北重要的成矿地段。区域内第四系覆盖较厚,且当前找矿详查工作开展较少。为了提取有效成矿信息并应用于找矿靶区优选圈定,本研究在该地区开展1:1万土壤地球化学测量工作,对Au、Ag、Bi、Cu、Pb、Zn、Sb、Mo和Mn共9种代表性金属元素含量特征进行统计分析。研究结果发现Au、Ag和Mo元素为研究区内成矿有利元素。运用R型聚类分析对9种元素进行分类处理,划分出Cu-Zn-Mn、Au-Pb-Bi、Sb-Mo和Ag共4组元素组合。采用累频法计算单元素异常下限,并对单元素异常进行成图处理。运用规格化面金属量来评价单元素异常参数特征,并圈定了4处异常靶区和2处异常重点查证区。在异常重点查证区内利用土壤地球化学剖面进行异常查证,圈定2处成矿有利部位。经槽探工程验证,发现4条金银矿体。证明利用土壤地球化学测量能够在研究区提取有效的找矿信息。 相似文献
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乐平涌山地区隶属于钦杭成矿带东段塔前—赋春铜多金属成矿带。在该地区开展1∶1万土壤地球化学测量工作,分析元素地球化学特征、单元素异常特征、元素组合特征及结合成矿地质背景,共圈定18处综合异常,通过对综合异常进行分类评价及评序,优选出较好的3处异常开展异常详细查证工作。经地表探槽揭露,新发现金矿(化)点2处,揭露金矿体2条,金矿化体2条,取得较好的找矿效果,认为该区找矿前景良好,是寻找矽卡岩型铜矿、韧性剪切型金矿的有利地区。 相似文献
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依据土壤测量资料,分析研究了内蒙古乌拉盖地区土壤地球化学特征。元素分布、单元素异常、元素相关性、异常元素组合等研究表明土壤地球化学测量方法在内蒙古东部地区有良好的找矿效果,结合地质成矿背景以及大比例尺地质填图、化探、槽探等异常查证结果,圈定了曩辛希勒-巴嘎努如铅、锌、银找矿靶区。 相似文献
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准苏吉花斑岩型铜钼矿床是内蒙古中北部新近发现的铜钼多金属矿床之一。这里对矿区地表土壤热磁组分中元素含量及异常特征进行了研究,结果表明元素异常在平面上出现明显的分带性,以地表矿化露头为中心向外依次为Mo-Cu-W-Te带、Ag-Bi-In-Zn-Cd带及As-Pb-Mn-Sb带,所有元素异常均包含在Fe2O3异常之内。通过土壤热磁组分地球化学测量,共圈出七个多元素组合异常,经野外异常查证,认为土壤热磁组分地球化学异常为有效的地质异常。因此,在风成沙覆盖区应用土壤热磁组分地球化学测量方法,配合多重分形(含量-求和法)和地质累积指数(Igeo)等统计方法,可最大限度消除风成沙干扰,快速、有效地确定异常下限,圈定多元素组合异常,提供有利找矿靶区。 相似文献
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内蒙古准苏吉花铜钼矿区土壤地球化学
异常特征与评价 总被引:8,自引:0,他引:8
内蒙古准苏吉花铜钼矿床为典型的热液脉型矿床,矿区地表土壤中元素含量及异常特征研究表明,元素在平面上出现明显的分带性,以地表矿化露头为中心,由内向外依次为Mo-Cu-W-Bi带、In-Zn-Ag-Cd带及Pb-As-Sb带,该元素组合分带与典型中-高温热液矿床中元素分布规律基本一致。利用综合地质累积指数对土壤中主成矿元素Mo与伴生元素Cu、W、In、Bi的组合异常进行评价,共圈出4个找矿靶区,经野外异常查证与工程验证,建议在Ⅰ、Ⅱ号靶区进行深部资源预测工作,对Ⅲ、Ⅳ号靶区开展进一步查证与验证工作,以期在Ⅳ号靶区深部发现矽卡岩型矿化。本次研究对准苏吉花地区下一步勘查找矿工作的部署与开展具有重要借鉴意义。 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20141520 Bo Ying(Key Laboratory of Metallogeny and Mineral Assessment,MLR,Beijing 100037,China);Liu Chenglin Saline Spring Hydrochemical Characteristics and Indicators for Potassium Exploration in Southwestern and Northern Tarim Basin,Xinjiang(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,34(5),2013,p.594-602,5 illus.,3 tables,28 refs.) 相似文献
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正20141243Chen Ge(Hangzhou Research Institute of Petroleum Geology,PetroChina,Hangzhou 310023,China);Si Chunsong Study on Sedimentary Numerical Simulation Method of Fan Delta Sand Body(Journal of Geology, 相似文献
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正20142599Chen Sanming(Guangxi Key Laboratory of Concealed Deposits Exploration,Guilin University of Technology,Guilin541004,China);He Yuzhou Block Model and Reserves Estimation of Panzhihua Iron Deposit Based on 3D Geological Modeling(Journal of Guilin University of Technology,ISSN1674-9057,CN45-1375/N,33(4),2013,p.610-615,9illus.,1table,15refs.) 相似文献
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正20140594 Bai Daoyuan(Hunan Institute of Geology Survey,Changsha 410016,China);Zhong Xiang Faults in the Jingzhou Basin and Their Tectonic Settings(Geotectonica et Metallogenia,ISSN1001-1552,CN44-1595/P,37(2),2013,p.173-183,6illus.,59refs.)Key words:basin evolution,tectonic setting,South China In the Upper Paleozoic and Jurassic se- 相似文献
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正20141912Cao Hui(State Key Laboratory for Continental Tectonics and Dynamics,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China)Gravitational Collapse and Folding during Orogenesis:A Comparative Study of FIA Trends and Fold Axial Plane Traces(Geology in China,ISSN1000-3657,CN11-1167/P,40(6),2013,p.1818-1828,9illus.,35refs.,with 相似文献
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正20141609 Chen Guiying(College of Earth Sciences,Guilin University of Technology,Guilin 541004,China);Han Nairen New Materials of Stylophora from the Upper Cambrian of the Jingxi Area,Guangxi,South China(Acta Palaeontologica Sinica,ISSN0001-6616,CN32-1188Q,52(3),2013,p.288-293,2 illus.,12 refs.)Key words:Stylophora,Guangxi 相似文献
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正20140634 Cao Lingmin(Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China);Xu Yi Finite Difference Tomography of the Crustal Velocity Structure in Tengchong,Yunnan Province(Chinese Journal of Geophysics,ISSN0001-5733,CN11-2074/P,56(4),2013,p.1159-1167,6illus.,35refs.,with English abstract) 相似文献