中国陆域1：25万分幅建造构造图空间数据库

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 litho-stratigraphic 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/ environmental geological surveying, geothermal resources exploration, and ecological conservation.

针对中国全国矿产资源潜力评价专题项目（2006-2013年），项目研究团队收集了丰富的参考资料，包括1:5万、1:20万、1:25万区域地质调查数据（含1999-2005年青藏高原1:25万区域地质调查成果）、地质研究成果、科研专著及重要地质文献，还有地球物理、地球化学与遥感找矿推断成果。在消化整合全部资料后，团队编制了系列1:25万一手数据图件，构建了成矿地质背景研究空间数据库。运用构造岩套分析方法与编图技术，结合数据模型、质量控制模型、地理信息系统（GIS, Geographic Information System）软件等现代信息技术手段，团队进一步编制了多幅图件，新建了相关数据库，并按照标准系列图件规范对所有成果进行汇总整合，最终建成了中国大陆1:25万系列构造岩套图件空间数据库。该数据库包含729幅图件及其配套的编图说明与元数据，基本覆盖中国大陆全域。相较于传统地质图数据库以系、组级地层单元作为基本编图单元的模式，本数据库具备显著优势：其一，主图的核心编图单元细化至岩性单元（准成员层），实为岩石地层单位“组”之下最精细的填图岩性组分；其二，采用专属岩性样式表征不同产状的岩性单元，客观展现岩套与地质构造的实体形态及构造线条，系统反映地质作用过程及其演化特征，便于直接读图与应用。总体而言，本数据库可为1:50万及更小比例尺构造图件的编制提供基础资料，可直接为1:25万及更小比例尺区域矿产资源预测提供核心要素，也可为1:25万及更小比例尺成矿规律研究提供地质构造专题底图。同时，该数据库在地质调查与找矿、地质灾害防治、水文/工程/环境地质调查、地热资源勘探以及生态保护等领域具备广泛且长效的复用价值。