冈底斯西段地质矿产数据集（2021.11-2024.10）

本数据库包含空间范围：冈底斯西段、冈底斯西段东部、南冈底斯东段、南冈底斯中段。数据内容为：①1:25万地质数据集（地质体和构造）；②大宗金属矿产数据集（超大型、大型、中型、小型矿床及矿点）；主要图件有：冈底斯西段铜铅锌矿集区地质矿产图（1:25万）、冈底斯西段东部铜铅锌矿集区地质矿产图（1:25万）、南冈底斯东段铜铅锌矿集区地质矿产图（1:25万）、南冈底斯中段铜铅锌矿集区地质矿产图（1:25万）。空间数据库采用ArcGIS平台，可为区域成矿规律研究、资源潜力评估、战略远景区圈定以及各类专题图件编制提供基础数据支撑。数据库格式为文件数据库（.GDB），图件包括工程文件（MXD）和栅格图（JPG），也可根据需要生成各类常见图形格式（PDF、TIF、EPS等）。地质矿产数据坐标系为Beijing 1954 GK Zone 15，采用高斯-克吕格投影。数据来源及加工方法：基础地质数据主要来源于域内各地质调查部门地质图（1:20万）；②矿产数据主要来源包括全国矿产资源潜力评价项目成果（2012）、域内各地质调查部门相关资料数据、域内矿产相关论文论著。此外，为满足各类数据修改及完善，大量采用遥感数据，具体包括：ETM+、OLI、ASTER、Worldview等影像数据以及90m、30米、12.5mDEM数据等。数据质量描述：为满足青藏高原区域成矿规律研究、地质矿产图和成矿预测图编制需要，在数据空间准确性、逻辑一致性和数据完整性方面进行编辑、处理以及补充完善。具体包括：①矢量化，基于前述资料进行了大量矢量化工作，用于补充数字资料缺失区域，同时根据资料更新程度合并、分割面要素和线要素，矢量化按照我国相关规范要求比例尺精度要求下完成；②拓扑处理，消除重叠面、空区等拓扑错误；③完善要素属性结构和补充要素属性内容，围绕区域成矿规律研究、地质矿产图和成矿预测图编制目标，依据我国相关规范，结合具体资料和数据内容，建立了相应数据模型，完善了地质体、构造、矿产要素类属性结构并完成了相应属性的填写工作；④基于以上数据处理内容，结合青藏高原研究成果和最新认识，对区内相关地质内容进行了进一步修改和完善。数据应用成果及前景：1:25万地质矿产图，以及岩性、地质年代、地层分区等信息交互提取、分析及专题图件编制。

This database covers the following spatial areas: western Gangdise, eastern part of western Gangdise, eastern part of southern Gangdise, and central part of southern Gangdise. The data content includes: ① 1:250,000 geological dataset (geological bodies and structures); ② Bulk metal mineral resource dataset (super-large, large, medium, small deposits and mineral occurrences). The main maps include: 1:250,000 geological and mineral resource map of the Cu-Pb-Zn ore concentration area in western Gangdise, 1:250,000 geological and mineral resource map of the Cu-Pb-Zn ore concentration area in the eastern part of western Gangdise, 1:250,000 geological and mineral resource map of the Cu-Pb-Zn ore concentration area in the eastern part of southern Gangdise, and 1:250,000 geological and mineral resource map of the Cu-Pb-Zn ore concentration area in the central part of southern Gangdise. The spatial database is built on the ArcGIS platform, which can provide basic data support for regional metallogenic regularity research, resource potential assessment, strategic prospective area delineation, and compilation of various thematic maps. The database is in the format of file geodatabase (.GDB). The maps include ArcGIS Map Documents (MXD) and JPEG raster images (JPG), and various common graphic formats (PDF, TIF, EPS, etc.) can also be generated as needed. The coordinate system of the geological and mineral data is Beijing 1954 Gauss-Krüger Zone 15, adopting the Gauss-Krüger projection. Data sources and processing methods: ① Basic geological data mainly comes from 1:200,000 geological maps from various geological survey departments within the study area; ② Mineral data mainly comes from the achievements of the National Mineral Resource Potential Assessment Project (2012), relevant data from various geological survey departments in the region, and relevant papers and monographs on minerals in the region. In addition, to meet the needs of data modification and improvement, a large number of remote sensing data are used, including ETM+, OLI, ASTER, Worldview image data, as well as 90m, 30m, and 12.5m DEM data. Data quality description: To meet the requirements of studying regional metallogenic regularity in the Qinghai-Tibet Plateau, and compiling geological, mineral and metallogenic prediction maps, editing, processing and supplementation have been carried out in terms of spatial accuracy, logical consistency and data integrity. The specific work includes: ① Vectorization: A large number of vectorization tasks have been carried out based on the aforementioned data to supplement areas lacking digital data, and merge and split polygon and line features according to the update degree of the data; the vectorization work is completed in accordance with the scale accuracy requirements of relevant Chinese specifications. ② Topological processing: Eliminate topological errors such as overlapping polygons and empty areas. ③ Improve feature attribute structure and supplement attribute contents: Based on relevant Chinese specifications, combined with specific data and content, and in line with the objectives of regional metallogenic regularity research, geological and mineral map compilation and metallogenic prediction map compilation, the corresponding data model is established, the attribute structures of geological body, structure and mineral feature classes are improved, and the corresponding attribute filling work is completed. ④ Based on the above data processing, combined with the research results and latest understandings of the Qinghai-Tibet Plateau, relevant geological contents in the region are further modified and improved. Data application achievements and prospects: 1:250,000 geological and mineral maps, as well as interactive extraction, analysis and thematic map compilation of information such as lithology, geological age and stratigraphic division.

搜集汇总

背景与挑战

背景概述

该数据集包含冈底斯西段及周边区域的1:25万地质数据和大宗金属矿产数据，主要用于区域成矿规律研究和资源潜力评估。数据以ArcGIS文件数据库格式存储，并提供了多种图件格式，数据来源包括地质调查部门资料、遥感数据等，经过严格的质量控制和处理。