共查询到20条相似文献，搜索用时 93 毫秒
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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。 相似文献
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基于数据库平台的MT数据处理可视化方案 总被引：5，自引：0，他引：5
利用数据库技术可以很好地实现大地电磁测深数据的管理。介绍一种大地电磁测深数据处理的系统框架,并在此基础上,重点介绍了利用Paradox数据库系统建立数据库平台的过程,探讨了大地电磁测深数据处理功能的实现方案,利用混合语言编程及OLE编程技术实现Delphi与Fortran、Delphi与Surfer的调用,最终实现了基于测区、测线、测点为对象的数据处理可视化程序。 相似文献
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针对传统资料管理方式的不足,提出了利用数据库并结合GIS技术对长周期大地电磁资料进行可视化管理的方法,将工区测点信息与行政区域信息、道路交通信息、地形高程模型和地质构造信息等多种空间数据源相融合,阐述了该平台的系统结构和实现过程.并针对数据反演前的测线投影与测点距计算问题,介绍了测点高斯平面投影与最小二乘下测线直线拟合... 相似文献
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本数据集选取山东莱芜市幅1：50 000地形图空间数据库、莱芜市幅1：50 000地质图部分数据作为底图,采用本次水文地质调查取得的最新数据编制而成。除水文地质图外,数据集还包括机（民）井、泉、钻孔、水质分析及水量计算等数据表,主要分类及数据量为机（民）井209个、泉14个、水库13个、长期监测点13处（监测数据936点次）、地下水水位及水量统测100点次、环境地质点6个、样品采集（全分析、同位素及岩石）90组等。本数据集主要使用MapGIS 6.7平台辅助制图,数据量约169 MB,坐标系为CGCS 2000国家大地坐标系,投影方式为高斯-克吕格投影（6度带）。数据集不仅用二维方式标注了关键水文地质信息,还在主图及部分镶图引入三维地势表达方式。 相似文献
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高德章 《物探化探计算技术》2011,33(1):51-55,119
在物探化探工作中,所有的测点在陆地、海洋、空中均有它唯一的空间位置。在工作的不同阶段,测点位置按工作设计要求采用不同的方式予以标示。在实地观测时,测点定位采用全球定位系统GPS（DGPS）,由大地坐标系的大地坐标标示测点位置。在展示工作成果时,则采用投影坐标系的平面直角坐标标示测点位置。这里介绍了大地坐标系、常用投影坐标系的建立与特征,投影坐标系的选择与应用,不涉及具体的计算公式。 相似文献
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确定钻孔中各控制点的空间坐标及其在勘探线剖面上的投影位置,是综合整理勘探资料的重要一环.以往认为,每个测斜点的测斜数据是有其影响范围的,此范围乃是该测斜点到其上、下两相邻测斜点距离的一半.这种点称之为控制点,相邻两控制点的连线,称为控制深度增量△l_i(图1),即某测斜点i的测斜数据影响了△l_i的长度,换句话说,在△l_i范围内,都用i点的测斜数据代表. 为了解钻孔中各控制点的空间位置,须计算各控制点的空间坐标X_i,Y_i,Z_i;又为了解各控制点在勘探线剖面上所相当的位置,还需将各控制点以一定的方式投影到勘探线剖面上,以求出沿勘探线方向τ的横坐标U_i及纵坐标(即偏离勘探线的 相似文献
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李东汉 《物探化探计算技术》1984,(4)
“高程数据库”是“重力数据库”的一个子库,简称HSF系统,主要是为全国区域重力调查地形改正和均衡改正提供高程数据而设计的,它存放的是1/5万地形图公里网节点处的高程数据,以1/10万国际分幅为存贮单位。用户根据需要可以按1/10万的图幅号检索一个图幅内的全部高程数据,也可以按平面直角坐标和地理坐标所指定的范围检索由计算机拼接好的几幅图的数据,拼接遇到跨投影带(高斯投影6°带)时,系统能自动选用相应扩边数据或用二次加权函数法、二维拟线性插值法用相邻带的高程数据进行扩边插值。 相似文献
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从大地电磁基本理论出发,推导了标量阻抗与张量阻抗计算公式。结合大地电磁阻抗张量分解理论,对预选区旧井测线、新场测线目标花岗岩体上的部分测点数据进行了SWIFT旋转,获取了电性主轴方位角、构造维数特征及二维偏离度等参数。结果表明旧井测线所在区域的构造主轴方位角主要在-10°~20°之间,整体呈二维特性,在构造断裂附近三维特性明显;新场测线构造主轴方位角总体范围与旧井测线类似,部分测点的极化特征表明电性主轴主要以北东向为主,这与SWIFT旋转分解得到的结果是一致的。通过对部分测点视电阻率曲线的分析,了解了预选区地下介质的电性结构特点,为剖面的整体电性解释提供了基础。 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
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. 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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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
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. 相似文献
14.
Emmanuel Skourtsos Daniel Vachard Alexandra Zambetakis-Lekkas Rossana Martini Louisette Zaninetti 《Comptes Rendus Geoscience》2002,334(12):925-931
Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931. 相似文献
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正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.) 相似文献
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正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.) 相似文献
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正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.) 相似文献
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正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus., 相似文献
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正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an 相似文献
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正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of 相似文献