中国地质调查局: 辽宁省他拉皋幅(K51E015003)1∶50 000地质图数据库

辽宁他拉皋幅（K51E015003）1∶50 000地质图根据《1∶50 000区域地质调查技术要求》（DD 2019—01）和行业的其他统一标准及要求，充分利用1∶200 000 区域地质、1∶250 000 区域地质调查工作资料，采用数字地质调查系统（DGSS），进行野外地质填图和数据库建设。通过遥感解译、野外数字填图等手段采集数据，完成辽宁他拉皋幅1∶50 000地质填图386.2 km²，系统编制了辽宁他拉皋幅1∶50 000地质图、矿产图、建造构造图，并依据《数字地质图空间数据库标准》（DD 2006—06）建立了数据库。图件详细填绘了金岭寺—羊山盆地、朝阳—北票盆地及分割盆地的岭的物质组成和构造组合特点，共计划分了25个地层填图单位，建立了测区岩石地层格架，分析了各地层层序特征并划分了沉积建造类型，识别出中元古代和中侏罗世2期以脉岩和岩株形式产出的侵入岩。该地质图数据库为MapGIS 格式，包括25个沉积（火山）地层单位，2个侵入岩单位，数据量为238 MB，其中地质体面实体数据108个、路线长度657 km、地质点<number>1144</number>个、地质 （界）线数据310条、278个产状数据、摄像 （照片）数据256个，薄片89件，锆石U–Pb 测年数据2件、光释光测年数据7件、岩石地球化学分析数据20件。该图幅建立了辽西中生代陆相地层格架，确定了侏罗系—白垩系界线，圈定北票组烃源岩分布范围并评价其质量，反映了1∶50 000 区域地质调查基础性成果，对中生代陆相地层对比研究具有重要的科学研究价值，对油气资源勘探具有重要指导作用。本数据库建立过程始终坚持完善的质量控制体系，确保了数据的真实性、可靠性和准确性，为该区矿产地质调查、地质灾害防治及生态环境保护、工程施工等提供基础地质支撑。

The 1:50 000 geological map of the Talagao Sheet, Liaoning Province (K51E015003) was compiled in accordance with the "Technical Requirements for 1:50 000 Regional Geological Survey" (DD 2019—01) and other unified industry standards and requirements. It fully utilized existing 1:200 000 and 1:250 000 regional geological survey data, and adopted the Digital Geological Survey System (DGSS) for field geological mapping and database construction. Data were collected via remote sensing interpretation, digital field mapping and other methods. A total of 386.2 km² of 1:50 000 geological mapping for the Talagao Sheet was completed. A series of maps were systematically compiled, including the 1:50 000 geological map, mineral resource map, and lithostructural map of the Talagao Sheet, Liaoning Province. A database was established in accordance with the "Spatial Database Standard for Digital Geological Maps" (DD 2006—06). The maps detail the material composition and structural assemblage characteristics of the Jinlingsi-Yangshan Basin, Chaoyang-Beipiao Basin, and the ridges separating these basins. A total of 25 stratigraphic mapping units were delineated, and the lithostratigraphic framework of the survey area was established. The sequence features of each stratigraphic unit were analyzed, and sedimentary formation types were classified. Two phases of intrusive rocks occurring as dikes and stocks, i.e., Mesoproterozoic and Middle Jurassic, were identified. This geological map database is in MapGIS format, covering 25 sedimentary (volcanic) stratigraphic units and 2 intrusive rock units, with a total data volume of 238 MB. The database includes 108 geological surface and solid data entries, 657 km of survey routes, 1144 geological points, 310 geological boundary data entries, 278 occurrence data entries, 256 photographic data entries, 89 thin sections, 2 zircon U-Pb dating data entries, 7 optically stimulated luminescence (OSL) dating data entries, and 20 lithogeochemical analysis data entries. This sheet established the Mesozoic continental stratigraphic framework in western Liaoning, determined the Jurassic-Cretaceous boundary, delineated the distribution range of source rocks in the Beipiao Formation and evaluated their quality. This reflects the foundational achievements of 1:50 000 regional geological survey, holds important scientific research value for the correlation study of Mesozoic continental strata, and provides significant guidance for oil and gas resource exploration. A sound quality control system was implemented throughout the database construction process, ensuring the authenticity, reliability and accuracy of the data. The database provides basic geological support for regional mineral geological survey, geological hazard prevention and control, ecological environment protection, engineering construction and other related work.