EXPERIMENTAL STUDY OF WATER-ROCK HYDROGEN AND OXYGEN ISOTOPE EXCHANGE IN XIANGSHAN URANIUM ORE-FIELD

ＥＸＰＥＲＩＭＥＮＴＡＬＳＴＵＤＹＯＦＷＡＴＥＲ－ＲＯＣＫＨＹＤＲＯＧＥＮＡＤＯＸＹＧＥＮＩＳＯＴＯＰＥＥＸＣＨＡＮＧＥＩＮＸＩＡＮＧＳＨＡＮＵＲＡＮＩＵＭＯＲＥ－ＦＩＥＬＤTXＥＸＰＥＲＩＭＥＮＴＡＬＳＴＵＤＹＯＦＷＡＴＥＲＲＯＣＫＨＹＤＲＯＧＥＮ...     

SEGUENCE-BASED LITHOFACIES-PALEOGEOGRAPHY OF PERMIAN IN THE SICHUAN-YUNNAN-GUIZHOU-GUANG REGION

ＳＥＧＵＥＮＣＥＢＡＳＥＤＬＩＴＨＯＦＡＣＩＥＳＰＡＬＥＯＧＥＯＧＲＡＰＨＹＯＦＰＥＲＭＩＡＮＩＮＴＨＥＳＩＣＨＵＡＮＹＵＮＮＡＮＧＵＩＺＨＯＵＧＵＡＮＧＲＥＧＩＯＮＴｉａｎＪｉｎｇｃｈｕｎ，ＣｈｅｎＨｏｎｇｄｅ，ＱｉｎＪｉａｎｘｉｏｎｇａ...     

FUCHSITE QUARTZITE IN ARCHEAN CAOZHUANG GROUP OF EASTERN HEBEI,CHINA AND ITS GEOLOGICAL IMPLIC-ATION

ＦＵＣＨＳＩＴＥＱＵＡＲＴＺＩＴＥＩＮＡＲＣＨＥＡＮＣＡＯＺＨＵＡＮＧＧＲＯＵＰＯＦＥＡＳＴＥＲＮＨＥＢＥＩ，ＣＨＩＮＡＡＮＤＩＴＳＧＥＯＬＯＧＩＣＡＬＩＭＰＬＩＣ－ＡＴＩＯＮTXＦＵＣＨＳＩＴＥＱＵＡＲＴＺＩＴＥＩＮＡＲＣＨＥＡＮＣＡＯＺＨＵＡＮＧＧ...     

Recent Progress on Global Change Research in China

ＲＥＣＥＮＴＰＲＯＧＲＥＳＳＯＮＧＬＯＢＡＬＣＨＡＮＧＥＲＥＳＥＡＲＣＨＩＮＣＨＩＮＡＦｕＣｏｎｇｂｉｎ，ＹｅＤｕｚｈｅｎｇ（ＣｈｉｎａＣｏｍｍｉｔｔｅｅｆｏｒＩＧＢＰ，ＣＡＳＴ，Ｂｅｉｊｉｎｇ１００００８）ＲＥＣＥＮＴＰＲＯＧＲＥＳＳＯＮＧＬＯＢＡ...     

锚喷技术在高层建筑深基坑支护中的应用

锚喷技术在高层建筑深基坑支护中的应用①ＡＰＰＬＩＣＡＴＩＯＮＯＦＡＮＣＨＯＲＳＰＲＡＹＴＥＣＨＮＯＬＯＧＹＴＯＳＵＰＰＯＲＴＩＮＧＯＦＤＥＥＰＢＡＳＩＣＰＩＴＯＦＨＩＧＨＢＵＩＬＤＩＮＧ李兰青ＬｉＬａｎｇｑｉｎｇ深圳市建材工业集团房地产开发公司深圳５...     

OIL-GASPROSPECTING MODELS BASED ON THE PERMIAN SEQUENCE FRAMEWORK OF THE SICHUAN-YUNNAN-GUIZHUO-GUANGXI REGION

ＯＩＬＧＡＳＰＲＯＳＰＥＣＴＩＮＧＭＯＤＥＬＳＢＡＳＥＤＯＮＴＨＥＰＥＲＭＩＡＮＳＥＱＵＥＮＣＥＦＲＡＭＥＷＯＲＫＯＦＴＨＥＳＩＣＨＵＡＮＹＵＮＮＡＮＧＵＩＺＨＵＯＧＵＡＮＧＸＩＲＥＧＩＯＮＯｉａｎＹｉｚｈｏｎｇ，ＳｈａｏＪｉａｎｆｅｎｇａｎ...     

ULTRAHIGH-PRESSURE P-BEARING TITANITE IN E-CLOGITE AT HOUSHUICHEGOU,SHANDONG PROVINCE,EASTERN CHINA

ＵＬＴＲＡＨＩＧＨ－ＰＲＥＳＳＵＲＥＰ－ＢＥＡＲＩＮＧＴＩＴＡＮＩＴＥＩＮ牛茫蹋希牵桑裕牛粒裕龋希眨樱龋眨桑茫龋牛牵希眨樱龋粒危模希危牵校遥希郑桑危茫牛牛粒樱裕牛遥危茫龋桑危罷XＵＬＴＲＡＨＩＧＨ┐ＰＲＥＳＳＵＲＥＰ┐ＢＥＡＲＩＮＧＴＩＴＡＮＩ?..     

GENETIC SEQUENCES OF GOLD DEPOSITS IN EPICONTINENTAL OROGENC MINERALIZATION ZONE——THE TECTONIC-METAMORPHIC-MINEROGENIC BELT IN THE AILAOSHAN MOUNTAINS,YUNNAN PROVINCE,CHINA

ＧＥＮＥＴＩＣＳＥＱＵＥＮＣＥＳＯＦＧＯＬＤＤＥＰＯＳＩＴＳＩＮＥＰＩＣＯＮＴＩＮＥＮＴＡＬＯＲＯＧＥＮＣＭＩＮＥＲＡＬＩＺＡＴＩＯＮＺＯＮＥ———ＴＨＥＴＥＣＴＯＮＩＣＭＥＴＡＭＯＲＰＨＩＣＭＩＮＥＲＯＧＥＮＩＣＢＥＬＴＩＮＴＨＥＡＩＬＡＯＳＨ...     

新疆第三届天山地质矿产学术讨论会召开

新疆第三届天山地质矿产学术讨论会召开ＴＨＥＨＯＬＤＩＮＧＯＦＴＨＥＴＨＩＲＤＳＹＭＰＯＳＩＵＭＯＮＴＩＡＮＳＨＡＮＧＥＯＬＯＧＹＡＮＤＭＩＮＥＲＡＬＲＥＳＯＵＲＣＥＳＯＦＸＩＮＪＩＡＮＧ￥／／由自治区科协、新疆地质矿产局、新疆石油管理局、西北石油地质...     

PERMIAN SEDIMENTARY BASINS AND REGIONAL SEDIMENTARY MODELS IN THE SICHUAN-YUNNAN-GUIZHOU-GUANGXI REGION AND CORRELATABILITY OF SEALEVEL CHANGES

ＰＥＲＭＩＡＮＳＥＤＩＭＥＮＴＡＲＹＢＡＳＩＮＳＡＮＤＲＥＧＩＯＮＡＬＳＥＤＩＭＥＮＴＡＲＹＭＯＤＥＬＳＩＮＴＨＥＳＩＣＨＵＡＮＹＵＮＮＡＮＧＵＩＺＨＯＵＧＵＡＮＧＸＩＲＥＧＩＯＮＡＮＤＣＯＲＲＥＬＡＴＡＢＩＬＩＴＹＯＦＳＥＡＬＥＶＥＬＣＨＡＮ...     

一种多因子相关计算方法

采用分析与图解相结合的方法解决多因子非线性相关计算,求回归方程问题。先从多个因子中找出对倚变量影响最大的一个因子,作单相关曲线,求残差;再从余下的因子中找出对残差影响最大的因子,作相关曲线,求残差,直到剩余各因子对残差影响相当;最后用剩余因子线性分解残差,从而求得多因子非线性回归方程。     

基于扫描法在复杂地层剖面图绘制中的应用

论述了基于扫描线填充算法的理论和适用填充剖面图的数据结构．同时应用该算法采用Delphi和OpenGL绘制了某地质工程实例的二维、三维复杂地质填充剖面图，并取得了较好效果．     

航空物探平剖图自动绘制的可视化处理

简要介绍了航空物探平面剖面图的自动绘制方法,给出了绘制中对一些问题的处理方法;重点介绍了彩色渐变填充着色、彩色渐变渲染着色等几种可视化处理方法,并提出了着色中渐变度、透明度概念及应用方法。     

利用测井资料计算机自动识别沉积微相方法研究

以关键井沉积微相分析为基础,将测井学同地质、现代数学相结合,从测井资料中提取反映各种微相的测井特征参数,并应用一套多元统计分析方法,建立各种沉积微相的判别模式,研究开发一套软件系统,实现计算机根据测井资料自动分析判别陆相地层沉积微相。应用该软件对某油田西区的十几口井的测井资料进行处理,并绘制出沉积微相平面图。     

频率分析中特大洪水处理的新思考

按以不确定性较小的实测洪水系列为主的原则,对含特大洪水系列的频率计算方法,包括经验频率、参数估计和适线问题进行了讨论,并结合实例作了剖析,提出了改进意见。     

Chemical fractionation in iron meteorites and its interpretation

Published analyses of trace and minor elements in iron meteorites have been compiled and the distributions interpreted with the chemical groups defined by Wasson. When each element is plotted against Ni on log scales, groups are often clearly resolved with all the members of a group falling within the limits of sampling and analytical error on a straight line. The lines for groups IIIa,b and IVa are generally parallel with IIa,b plotting on a steeper gradient. In contrast to Ga and Qe, many elements show variations within a group which may approach that shown by all the iron meteorites. Group I members have a fairly uniform concentration of elements which are severely fractionated in the other major groups. There are also fewer correlations of elements in group I.     

主成分分析在地质样品分类与浓度预测中的应用研究

用主成分分析方法研究地质样品的Ｘ荧光光谱强度与浓度的关系,对未知样分类并预测样品浓度。对标准化后的数据计算各样品的主成分得分,根据得分分布图可快速分类样品。对训练样品作主成分回归分析,建立降维的主成分回归模型,用主元回归预测各组分浓度,效果好于多元回归分析方法。     

补偿密度测井仪的刻度与密度计算

在分析XAM/XAP补偿密度测井仪刻度资料和密度计算方法的基础上,指出了原刻度资料和密度计算方法的一些缺陷;对XAM/XAP补偿密度测井仪重新进行了刻度,并制作了新的脊肋图;依据脊肋图研究出肋线方程系数和高次多项式两种新的补偿密度计算方法,从而使密度测井的精度提高到0.03g/cm~3。     

Standardization of metal concentrations in sediments using regression residuals: an example from a large lake in Florida, USA

 A new method of standardizing metal concentrations in sediments was tested on samples from Lake Miccosukee, a large karstic lake in north Florida. Metal concentrations were analyzed in 222 sediment samples from 26 cores representing 9 sampling sites in the lake. Measured sedimentation rates in the lake are low. Percent organic matter strongly increases upward in all the cores. The C/N ratio remains constant throughout all the samples, with a mean value of about 13, regardless of depth or location. All of the geochemical variables are at least approximately log-normally distributed; thus, log-log or semi-log scattergrams were used and the data were log-transformed before statistical calculations were performed. Some elements (Mn, Zn, Hg, Cu, and Ca) are primarily associated with the organic fraction; others (La, Cr, Sr, and Ba) are clearly related to the terrigenous fraction; others show affinities for both fractions. Consequently, no bivariate scattergrams or plots of ratio versus depth – commonly used for standardization by plotting or ratioing a reference element (such as Al) to an element of interest – were found to be adequate for standardization of this dataset. The best method for standardization was found to be one based on multivariate (trivariate) linear regression, using log Al and log C as the independent variables (reference elements representing terrigenous and organic fractions, respectively), and the log of the element of interest as the dependent variable. Residuals (deviations) from the best-fit linear surface were then plotted versus depth in the cores to accomplish the standardization. The results indicate that, with the possible exception of Mn at two sites, there is little evidence of anthropogenic input of trace elements to the lake, and most trace-element concentrations in the lake can be considered as valuable baseline information. A significant finding is that different and erroneous conclusions might have been reached if other standardization methods, not based on trivariate regression, had been employed. Received: 28 August 1997 · Accepted: 24 November 1997     

绘图方式对直流电测深等值线断面图的影响

以一条测线的直流电测深资料为例,分别用人工和Surfer软件绘制出视电阻率等值线断面图进行比较,从而说明:正确地应用Surfer软件绘制等值线图非常重要,关键是网格化前对x、y值的表达方式以及选择那种插值方法,如何插值才能取得理想的效果,否则会直接影响资料解释,甚至会得出错误的结论。