地理信息系统在国土资源调查中的应用

目前地理信息系统的制图功能广泛应用地国土资源大调查中，作者结合自己的工作体会，介绍一个微机辅助制图的工作方法和步骤：图层设置，矢量化，误差校正，图幅拼接，图幅整饰和图形输出。     

Surfer和MapGIS间的数据交换

Suffer专业制图软件包拥有一套完善的从原始数据到2D、3D图件的解决方案,而MapGIS地理信息系统拥有强大的图形编辑和打印输出子系统.利用两者之间的优势,相互结合,能够快速获得理想的成果图件.     

由野外实测数据直接生成MAPGIS地质基础图件方法

传统纸介质手工制图存在信息实时再现滞后、共享交换不便等弊端,即便目前普遍使用计算机制图,也只是对纸介质底图进行二次描绘,不是真正意义上的计算机数字化制图和专业应用.因此,由野外实测数据直接进机处理生成地质基础图件,已成为专业人员在实际工作中急需解决的实际问题.笔者尝试以中国地质大学开发的MAPGIS6.6为主,辅以常用图表处理软件等,将原始数据转换成MAPGIS明码格式文件,导入成图系统,经系统处理直接成图,基本解决了野外实测数据直接进机处理生成地质基础图件的问题,其成图精度高,基本图形、数据共享,成果信息实时再现,能够进行基本的空间分析,可实现信息全息化,成图质量可通过源数据检查等.     

地质制图中主要要素之间关系的处理

地质制图工作是一项复杂的、创造性的工作。无论是传统的手工作业,还是正在兴起的数字化制图,处理好图中错综复杂的各要素之间的关系是非常重要的,它直接影响成图的真实性和使用效果。     

地质矿产实验室质量控制图的计算机制作

国家规范在质量控制中必须使用控制图.手工绘制存在耗时多、易出错和数据不宜保存、统计慢问题.使用通用Microsoft excel软件建立质量控制图的方法,建立一个标准图表(相当于一个模板),可以满足要求.导入原始数据就可以自动生成相应的质量控制图,降低制图难度,提高速度,且非常方便存储和数据统计.     

用AutoCAD二次开发系统绘制化探图

将地球化学测量的分析数据按照每条测线上的测点位置以一定的顺序依次输入Microsoft Excel、Microsoft Word或其他数据库软件编制的多元素分析数据表，并对各元素分别建立成纯文本数据文件。根据制图比例尺、测线数目和间距、测线上测点数目和点距、测区的某一角点坐标等已知参数，分别计算出各测点在图纸上的坐标值，将纯文本数据文件中各元素的分析结果标注在图纸上对应的测点位置，以绘制原始数据图并根据如上的参数以及化验数据计算编绘平面剖面图，最后再根据测线方位角使整个图形旋转，从而完成图件的制作。按照上述方法，以VisualLISP为工具，利用AutoCAD2000二次开发技术编制相应的处理程序，从而实现地球化学原始数据图和平面剖面图的微机制图。     

浅谈MAPGIS在地质制图中的应用

数字制图是地学制图的一种制图工,在地勘单位已得到普遍应用。本文通过在实际工作中利用ＭＡＰＧＩＳ制作１：５万地质图的经验,从数字图与手工制图的区别,以及制图工艺流程等方面进行探索,供同行们参考。     

EL－5100S计算器在制图工作中的应用

利用ＥＬ－５１００Ｓ计算器，根据制图工作所需图幅元素精度，进行坐标正反算，边长计算，图幅面积计算，子午线收敛角及邻带坐标的计算。     

EL—5100S计算器在制图工作中的应用

利用ＥＬ－５１００Ｓ计算器，根据制图工作对需图幅元素精度，进行坐标正反算，边长计算，图幅面积计算，子午线收敛角及邻带坐标的计算。     

基于传统思路实现图切地质剖面的应用探讨

图切剖面图是地质工作中最常用图件之一,近些年国内专家、学者们都着力于自动化图切剖面的开发与研究,却忽略了在未赋高程属性的纸质图、光栅图或矢量化底图上实现图切剖面的研究,在计算机制图技术飞速发展的今天或未来一段时间,特别是非专业制图的地质技术人员,还离不开传统习惯来完成图切地质剖面工作,笔者基于传统手工作图思路,探讨在Au-toCAD上二次开发实现图切地质剖面技术在地质工作中的应用.     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

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.     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

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.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

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.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

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).     

NONMETALS DEPOSITS

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.)     

MATHEMATICAL GEOLOGY

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,     

PROSPECTING EXPLORATION

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.)     

STRUCTURAL GEOLOGY

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-     

STRUCTURAL GEOLOGY

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