The National 1:1000000 Geological Map Spatial Database

The People's Republic of China 1:1000000 digital geological map database is based on uniform standards and requirements for the preparation of a thematic digital geological map. The geological map is based on comprehensive research, and fully absorbs the new achievements and new data of geological survey in recent years, making use of new technology, new theory and new methodology. Based on the chronology of the stratigraphic units and the representations of the rock strata, the intrusive rocks are further represented by the method of "lithology plus dating", which further improves the research degree of basic geology. The geological map database is rich in information with about 1.2 GB, having: rock stratigraphy units 5347 illustrations; intrusion "lithology plus era" unit 1780 cases; inter-provincial important fault 93; 558 important faults in the provinces (autonomous regions and municipalities); 1545 (group) of isotopic age data; and 382 representative holes. All the geometric elements of surface elements and line elements, isotopic age and drillings have established corresponding attributes, with adjacent maps between the map processing, map instructions and metadata are prepared. The database uses a unified linear library, symbol library, color library, the mapping process all using the MapGIS6.5 platform computer-aided map, plotting high precision, good quality, meeting design requirements to produce 64 national maps with four Area of the work of the method, the final unified system made. The digital geological map is the most complete and the latest 1: 1000000 geological map in China, being the first result of China's first such digital geological map using GIS technology, which fully reflects the characteristics of China's geological structure and the current new level of geological research.

中华人民共和国1:100万数字地质图数据库，系按照统一标准与要求编制的专题数字地质图数据集。该地质图依托综合研究成果，全面吸纳近年来地质调查的全新成果与数据，融合了新技术、新理论与新方法。基于地层单位年代学框架与岩层表征规范，侵入岩采用“岩性+年代”的表征方式进行细化表达，有效提升了基础地质研究程度。该数据库信息量丰富，总容量约1.2GB，包含：5347幅岩石地层单元图件、1780个“岩性+时代”侵入岩单元、93条省际重要断裂、558条省内（自治区、直辖市）重要断裂、1545组同位素年龄数据以及382个代表性钻孔。所有面状要素、线状要素的几何元素，以及同位素年龄数据与钻孔数据均已建立对应属性字段；图幅接边处理、图件说明与元数据均已完成编制。该数据库采用统一的线性库、符号库与色库，成图全过程依托MapGIS6.5平台开展计算机辅助制图，制图精度优异、质量达标，符合设计规范，共生成64幅国家级图幅，经四项区域制图流程最终整合为统一的系统数据集。该数字地质图是我国目前最为完整、最新的1:100万地质图成果，亦是国内首次采用地理信息系统（Geographic Information System, GIS）技术编制的同类数字地质图成果，全面展现了我国地质构造特征与当前地质研究的最新水平。

搜集汇总

背景与挑战

背景概述

该数据集是中国1:1000000数字地质图数据库，综合了近年地质调查的新成果，采用统一标准和技术制作，包含丰富的岩石地层、侵入岩、断层等信息，是中国最完整和最新的地质图数据库。