Construction method of spatial database of geological map(1∶1 500 000)of the People's Republic of China
Based on the MapGIS platform and new technology and new methods,the geological map(1∶1,500,000)and graphic spatial database of the People's Republic of China were compiled according to unified standards and requirements.Multi-disciplinary data,including the 1∶50,000 and the 1∶250,000 regional geological surveys of the country,geological maps of main metallogenic belts at the scales ranging from 1∶500,000 to 1∶1,000,000,geological records of some provinces and autonomous regions,and findings of basic geoscience were used to map comprehensively.The regional stratigraphic system of the whole country,the national spatiotemporal sequence of magmatic rock,the distribution of metamorphic rock and the framework of metamorphism have been updated,the national geotectonic units have been divided,and a number of important regional tectonic boundary surfaces has been newly confirmed.The computer-aided intelligent geological mapping technology has been preliminarily applied to form the integration of"map and database".With the simultaneous mapping of North China,Northeast China,East China,Central South,Southwest China and Northwest China,and the seamless montage of geological units,geographic data and data structures of every province and every autonomous region,the national geological map has been completed.The database contains about 1.65 GB of data,including 78,194 marked geological bodies,308 craters or volcanic eruption centers,221 important fossil sites and fossil groups,12 golden spikes,1,197 isotopic age data,and 125 representative boreholes(including continental deep drilling).The database fills the gaps in the national geological database sys-tem,provides basic data sources for geological big data and Geo-cloud construction and services,and offers important basic geological data for natural resource planning and management,basic geological and resource environment background research,environmental governance and disaster prevention and control,international cooperation,etc.
geological map of the People's Republic of China1∶1,500,000spatial databaseintegration of map and databaseMapGIS
NETL
NSTL
万方数据
