晋南–豫西地区1:500000数字地质图空间数据库

Spatial Database of the 1:500000 Digital Geological Map of Southern Shanxi–Western Henan

晋南–豫西地区1:500000地质图数据库是在充分利用近年来山西省南部中条山地区和河南省西部地区1:250000、1:200000、1:50000区域地质调查和其他综合性研究成果的基础上编制而成,同时对关键地质问题进行了综合研究。编图过程中以板块构造及地球动力学理论为指导,用MapGIS 6.5平台计算机辅助成图,成图精度高,质量好,数据量约为476 MB。综合编图和研究过程中,根据获取的118个同位素年代学数据、409件岩石地球化学数据,对关键地层和岩浆岩的时代和构造属性进行了更新,提出了中-上元古界地层划分和秦岭造山带大地构造结构划分的新方案,具有很强的时效性和创新性。

The spatial database of the 1:500000 digital geological map of the southern Shanxi–western Henan Region was compiled based on the results of the 1:250000,1:200000 and 1:50000 regional geological surveys of the Zhongtiaoshan area in the southern Shanxi Province and western Henan Province,among other research results in recent years,while having systematically investigated key geological problems.Guided by the theories of plate tectonics and geodynamics and using the Map GIS 6.5 platform,the current project has achieved high mapping accuracy and satisfactory quality,with a data size of approximately 476 MB.During the comprehensive mapping and research process,118 pieces of isotopic chronological data and petro-geochemistry data of 409 samples have been obtained and thus the eras of key strata and magmatic rock have been updated.For the latest and most innovative achievement,a new scheme was proposed for the middle–upper Proterozoic stratigraphic subdivision and the tectonic division of the Qinling orogenic belt.