【作者】 刘荣梅；

【导师】 武法东；

【作者基本信息】 中国地质大学（北京） ， 第四纪地质学， 2003， 硕士

【摘要】 本文配合宁夏地矿局的青藏高原东北缘宁南弧形推覆构造带矿产资源潜力调查评价项目，利用地理信息系统技术，建立了宁夏矿产地质信息系统，形成了用GIS手段进行金属矿床的评价预测的技术方法和流程，实现了对宁南地区尝试性的成矿模型评价。 论文在收集了宁夏地区基础地质、航磁、重力、化探、遥感以及现有的大中型金属矿点信息的基础上，以Arc／View软件为平台，建立了宁夏矿产地质信息系统，实现了对多源地学信息的综合管理，灵活的图形信息与属性的多模式、多条件的双向查询检索；空间实体的坐标位置、长度、面积、面积比率、夹角、地质复杂度(熵值)、线性体密度以及点密度等的计算统计；线性相关、缓冲区分析、不同类型的叠加分析等空间数据的分析功能；柱状图、散点图、饼图等各类专题图表的生成。 论文综合宁南地区多源地学信息，尝试性建立了宁南地区的以Au为主的多金属成矿预测模型，通过对各种影响因素进行专题分析、统计计算，选取了10个变量并对其赋值，计算出综合权值，并根据综合权值生成了成矿预测等值线。通过与矿点分布与组合元素的地化异常区的对比，论证了成矿模型的可行性，分析了模型不完善的原因，并提出了进一步工作的方向。更多还原

【Abstract】 Based on the program-the potential surveying assessment of mineral resources of arc nappe structure belt of south Ningxia in north-eastern margin of Qinghai-Tibet plateau, a software system named Ningxia Mineral Geological Information System is constructed on the PC platform associated with Arc/View developed by ESRI firm. The system involves large and diverse geoscience data sets of Ningxia district , which are acquired from various sources, such as geological mapping, geochemical sampling, geographysical surveying, remote sensing, etc.The systems includes various capabilities in processing and calculating data, such as x,y coordinate calculations for points and polygon centroids, area ,perimeter, percent of area calculations, angle of intersection, linear structure density statistic, geological entropy calculations , etc. At the same time it also has powerful analyzing function, for example, linear corelation analysis, buffer analysis, overlay analysis such as clip, union, erase, intersect, merge and identity.Using these techniques , an assessment geological model was set up and 10 metallogenic factors were used to create predicting TIN and coutours which can predict the prospecting pattern for gold and other concomitancy metals deposit in the south Ningxia .更多还原