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characteristics of tectonic geochemistry
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  构造地球化学特征
     THE CHARACTERISTICS OF TECTONIC GEOCHEMISTRY OF THE FAULT ZONES ON THE SOUTHERN AND NORTHERN EDGES OF HUAINAN COALFIELD,ANHUI PROVINCE
     安徽淮南煤田南北缘断裂带构造地球化学特征
短句来源
     CHARACTERISTICS OF TECTONIC GEOCHEMISTRY AND SPATIAL-TEMPORAL EVOLUTION OF GREEN Ni-Au-BEARING ALTERED ROCKS IN MOJIANG Ni-Au DEPOSITS, YUNNAN
     云南墨江金矿含镍金绿色蚀变岩的构造地球化学特征及时空演化
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  相似匹配句对
     TECTONIC GEOCHEMISTRY CHARACTERISTICS OF TRACE ELEMENTS IN SOILS OF ZHEJIANG PROVINCE
     浙江省土壤微量元素的构造地球化学特征
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     And the characteristics of the G.
     通过仿真和实验,也验证了G.
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     DIVISION OF TECTONIC UNITS AND ITS CHARACTERISTICS
     华机构造单元划分及其特征
短句来源
     Time Characteristics of Tectonic Evolution
     构造演化的时间性问题
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     The characteristics of G.
     论文首先对语音编码的各种方案进行了比较,并对G.
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Based on our field geological investigation, features of pervasive faults in the Liba orefield and the relationship between faults and gold mineralization have been studied in this paper. Faults can be divided into three stages:Ⅰ, Ⅱ and Ⅲ. Stage Ⅰ and Ⅱ are conductive and auxiliary structures, while faults of stage Ⅲ in NW and NWW directions are the best structures related to gold orebody among them. Furthermore, guided by views of tectonic geochemistry, the relationship between faults and gold mineralization...

Based on our field geological investigation, features of pervasive faults in the Liba orefield and the relationship between faults and gold mineralization have been studied in this paper. Faults can be divided into three stages:Ⅰ, Ⅱ and Ⅲ. Stage Ⅰ and Ⅱ are conductive and auxiliary structures, while faults of stage Ⅲ in NW and NWW directions are the best structures related to gold orebody among them. Furthermore, guided by views of tectonic geochemistry, the relationship between faults and gold mineralization has been transformed into characteristics of tectonic geochemistry and further into prospecting criteria and analysis results being processing by data processing system of geochemical exploration. It shows that Au, Ag, As, Sb and Pb association of faults is related to gold mineralization by means of systematically collecting tectonic samples, of which 17 elements were analyzed and related to gold orebodies, but Cr, Mn, Ti and V association of faults is not related to gold mineralization. Three discriminant functions of faults not related to/related to/gold mineralization and to gold orebodies have been built respectively with the method of multivariate discriminant analysis and on the basis of using three types of faults known above as standard samples. 23 known faults have been reclassified by discriminant functions, only 3 of which got wrong classifications. The rate of discrimination is close to 87%. By the practical use of such a method, 3 gold orebodies and 5 gold mineralized bodies among 11 fresh faults have been discovered in the Liba orefield.

本文从野外地质实际出发 ,系统研究了区内广泛发育的断裂构造特征及其与金矿化的关系 ,将断裂分为三级 , 、 级断裂主要为导矿和配矿构造 ,NW、NWW向的 级断裂为最有利的赋矿构造。据此 ,以构造地球化学的观点为指导 ,借助计算机化探数据处理系统 ,对系统采集的构造地球化学样品的 17个元素分析成果进行系统研究和 R型聚类分析等处理 ,将构造与金矿化的关系转化为构造地球化学特征 ,进而转化为找矿指标。研究表明 :含矿 (赋矿 +矿化 )断裂的特征元素组合为 :Au、Ag、As、Sb、Pb;非矿断裂的特征元素组合为 :Cr、Mn、Ti、V。将已知的赋矿、矿化和非矿断裂作为母体 ,利用多类判别分析建立了非矿、矿化和赋矿断裂判别函数 ,对已知的 2 3条断裂进行判别分类 ,错判 3条 ,准确率为 87%。该成果已应用于实际找矿工作中 ,通过对 11处未知区构造的含矿性研究 ,系统采取构造地球化学样品和进行相应的多元素分析 ,经判别后指导找矿 ,共发现金矿体三条 ,矿化体五条 ,取得了良好的找矿效果

Based on the analysis of tectonic deformation and isotopic geochemical constrains, the geochemical study of trace and major elements, characteristics of tectonic geochemistry and spatial-temporal evolution, the blue altered rocks in the Mojiang Ni-Au deposits have been discussed in detail. The first-stage blue Ni-Au-bearing altered rocks hosted in the brittle-ductile shear zones were probably formed at 251.9±4.32 Ma, and S-C fabric plane(S_2)in cutting bed plane(S_1) was found in this type of altered rocks....

Based on the analysis of tectonic deformation and isotopic geochemical constrains, the geochemical study of trace and major elements, characteristics of tectonic geochemistry and spatial-temporal evolution, the blue altered rocks in the Mojiang Ni-Au deposits have been discussed in detail. The first-stage blue Ni-Au-bearing altered rocks hosted in the brittle-ductile shear zones were probably formed at 251.9±4.32 Ma, and S-C fabric plane(S_2)in cutting bed plane(S_1) was found in this type of altered rocks. The second-stage blue Ni-Au-bearing altered rocks hosted in the strike-slip-type shear zones with a high angle were probably formed in the Early Yanshanian orogen (180.6~169.37 Ma). Transposition foliation of penetrative shear (S_3) and chlorite lineament (L_3) characterized the second-stage blue Ni-Au-bearing altered rocks. The last-stage blue Ni-Au-bearing altered rocks were most likely to have formed in the strike-slip-type shear zones during the Late Yanshanian orogen (149.98~71.14 Ma). Cr-minerals, including Cr-hydromiscovite, Cr-kaolinite, Cr-hydrokaolinite, blue Cr-kaolinite, hydrokaolinite and Cr-smectite, account for the green color of the Ni-Au-bearing altered rocks.

采用构造变形筛分、同位素地球化学定年约束和构造蚀变岩的常量 微量元素地球化学研究等方法,对墨江镍金矿床中含金镍绿色蚀变带进行详细研究,探讨其形成和时 空演化规律,以及与金、镍成矿关系,提出本区含镍金绿色蚀变带形成与演化可分为三个期次:早期含镍金绿色蚀变带形成于(251 9±4 32)Ma,产于韧性剪切带中,形成含铬绢云母 绢云母(S2)组成的切层剪切面理;中期含镍金绿色蚀变岩形成于燕山早期(169 37~180 6Ma),产于高角度脆韧性剪切带中,形成铬绢云母 含铬绢云母组成的透入性剪切面理换(S3)和绿泥石拉伸线理;晚期含金绿色蚀变糜棱岩形成于燕山晚期(71 14~149 98Ma),产于左旋走滑脆韧性剪切带中,发育铬伊利石(S4)和铬绿泥石(S4)组成透入性剪切变形面理置换,与脆韧性剪切带的主体产状一致,韧性剪切构造带内发育,走滑构造带中十分发育,形成褶皱变形带(倾竖褶皱、鞘褶皱)及含金蚀变岩。

 
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