Spatial Database of Serial Suite-Tectonic Map-sheets of Mainland China (1: 250, 000)
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摘要:
依托全国矿产资源潜力评价专项(2006—2013年)，通过全面收集1:5万、1:20万、1:25万区域地质调查资料(含1999—2005年获取的青藏高原1:25万区域地质调查资料)，地质研究成果、科研专著、重要文献等资料，以及地球物理、地球化学、遥感地质推断成果，在编制建立1:25万分幅成矿地质背景研究实际材料图空间数据库基础上，应用建造构造分析法及编图技术，采用数据模型、质量控制模型、GIS软件等现代信息技术手段，按1:25万标准分幅编图、建库、汇总、集成，建立了中国陆域1:25万分幅建造构造图空间数据库，包含图幅数729幅及其相应编图说明书和图件元数据等内容，空间范围基本覆盖中国陆域。明显优于以系或组级地层单位为表示单元的传统地质图数据库：主图图面要素是组级岩石地层单位的进一步细化、分解为不同的岩石建造，按产状表达建造花纹，客观表达岩石建造和地质构造实体形迹，系统反映地质作用及其演化特征，读图直观且便于应用。可为1:50万尺度及以小大地构造图的编制提供基础资料，为1:25万尺度及以小区域矿产预测直接提取矿产预测要素，为1:25万尺度及以小成矿规律研究提供地质构造专题底图资料；在地质找矿、地质灾害防治、水工环地质调查、地热资源勘查、生态文明建设等方面具有广泛且长久可重复利用价值。
Abstract:For the thematic Program on China's national mineral resources' potentials assessment (2006-2013), the research group has collected such abundant references as 1:50, 000, 1:200, 000 and 1:250, 000 regional geological survey data (including the 1:250, 000 regional geological survey results from the Qinghai-Tibet plateau in 1999-2005), geological research results, scientific research monographs and important geological literatures as well as geophysical, geochemical, and remote sensing prospecting inferred results.Having digested all these data, the group has compiled serial first-hand data map-sheets at scale of 1:250, 000 and created the spatial database for the metallogenic geological setting researches.Applying the suite-tectonic analysis method and map-compiling techniques with such modern information technologic means as data models, quality-controlling models, and GIS software, the group has further compiled multiple map-sheets, created new databases, and summarized and integrated all these results in line with standard serial map-sheets, and has established the spatial database of serial suite-tectonic map-sheets of mainland China (1:250, 000).The database has included 729 map-sheets as well as their corresponding compilation explanatory notes and map-compiling metadata, roughly covering the entire mainland China.Compared with the traditional edition of the geological maps database which is characterized by using the stratigraphic units of System and Formation as the basic map-compiling units, this database has some outstanding advantages.Firstly, the essential mapping elements in the principal map are as fine as lithological units (quasi-Member), which are actually the finest mapped lithological components under the lithostratigraphic unit 'Formation'.Secondly, different occurrences of the lithological units are expressed with the respective lithological patterns, objectively presenting the physical tracks and lineaments of lithological suites and geological structures, systematically reflecting the geological processes and their evolutionary characteristics, and being convenient for direct map reading and utilization.In general, this database can provide fundamental information for the compilation of 1:500, 000 or smaller scaled tectonic map-sheets, can directly offer essential factors for 1:250, 000 and smaller scaled regional mineral resources prediction, and can supply thematic base maps of geological structures for 1:250, 000 and smaller scaled minerogenetic regularity researches.It has also held extensive and long-term values for duplicative utilizations in geological survey and ore-prospecting, geo-hazard mitigation, hydrological, engineering and environmental geological surveying, geothermal resources exploration, and ecological conservation.
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