克拉克值

地层中Au的丰度值为克拉克值的2～3倍，是形成金矿的矿源层。

The Au abundance in stratum is more 2 or 3 times than Au clarke , thus the Tahua Group is an ore source bed .

引用并探讨了元素浓集克拉克值K与成矿能耗E之间的关系。

Relation of element concentration clarke ( K ) to energy depletion is introduced and discussed .

从中国陆壳所含C、H元素质量分数分析，中国陆壳的C、H元素质量分数高于全球平均含量的克拉克值。

In view of analysis of C , H contents in Chinese continental crust , they are higher than Clarke value of global average content .

由于矿区外围赋矿地层的Sn含量远低于Pb、Zn的含量，也远远低于地壳克拉克值，因此推测，Sn主要来源于花岗岩浆；

The content of Sn of the external stratum is far less than the content Pb , Zn of external stratum and crust Clarke value .

硅灰岩透镜体的铀乎均含量比克拉克值高出1&2个数量级，其它伴生元素（Zn、Mo、Cu、Ni和As等）含量也较高。

Average uranium content in siliceous limestone lenses is 1-2 orders of magnitude higher than Clark value , and contents of its associated elements ( Zn , Mo , Cu , Ni and As , etc. ) are relatively high .

其中的元素显著地贫TiO2和Al2O3，大部分微量元素相对于地壳克拉克值亏损，但Ba、Sb、Hg、Ag和Bi等少数几种元素例外地富集；

This formation is poor in TiO 2 and Al 2O 3 with most of the trace elements depleted in relation to their clarke values , although a few including Ba , Sb , Hg , Ag and Bi are exceptionally enriched ;

黄土高原黄土的平均化学成分与地壳克拉克值的类比

Comparison of average chemical composition of loess in Loess Plateau with Clark values of crust

矿区内地层和岩浆岩钼元素含量分别是克拉克值的43倍和21倍。

Mo abundance of strata and magmatic rocks is43 and21 times of Clark value , respectively .

作者根据发展了的克拉克值和原子克拉克值概念。

In this paper , after the evolution of the concept of " clarke ", the atomic clarke was discussed .

并且，黄土的平均化学成分十分接近现在使用的地壳克拉克值。

Moreover , the average chemical compositions of las were very close to Clark values of crust , which are used at Present .

结果显示硫铁矿焙烧灰渣中铊含量远高于克拉克值和土壤背景值；

The study shows that the contents of thallium in pyrite cinders are obviously higher than the Clark value and soil background values .

根据区域化探水系沉积物测量分析3万余件样品中40种元素含量，统计了32种微量元素的背景平均值、浓度克拉克值、总体变化系数等参数。

In the light of the contents of forty kind elements of more than thirty thousand regional stream sediment samples in Fujian province , the average background values , concentration Clarke and total variability coefficients were collected .

在利用水系沉积物富集系数估计值对浓度克拉克值进行校正后，使用顺序号累加法对福建省32种元素内生成矿作用的规模进行预测排序，并分析了银、硼的资源潜力。

After correcting the concentration Clarke with the stream sediment accumulation coefficients , endogenic metalization scales of thirty-two kind elements were prognosised with the help of additive method of the order , and the prospect of silver and boron were analyzed .

飞灰和底灰中大多数元素高于全国土壤背景值，7种元素高于克拉克值，其余8种低于克拉克值。

In fly ash and bottom ash , most of the trace elements have higher contents than soil background values of whole country , and the contents of 7 trace elements are higher than Clarke values and other 8 lower than Clarke values .

并以浓集克拉克值（研究区）和变异系数为主，讨论了不同岩类岩石微量元素丰度及其特征，提出了寻找金银多金属矿、特别是判断有关地球化学异常找矿意义的建议。

According to the concentration clarke and variation coefficients of these elements , the authors discussed the abundances of trace elements and their features , made suggestions of looking for Au Ag polymetallic deposits and evaluating the significance of geochemical anomalies to prospecting of mineral resources .