1:500万国际亚洲地质图空间数据库

The 1:5M International Geological Map of Asia (IGMA5000) under the aegis of the Commission for the Geological Map of the World (CGMW) is a cooperative project which involves more than 100 geologists from 4 subcommissions of CGMW as well as geological surveys and institutions of 20 Asian and European countries. IGMA5000 is the first digital Asian geological map built on the ArcGIS platform and compiled in accordance with international standards and also the first map that displays the off-shore and on-shore geology within the map area, and therefore the compilation of the map is extremely arduous and challenging. The map area covers whole Asia and its adjacent regions from the Alps in the west to the Mariana Trench in the east, and from the Arctic Ocean in the north to the Java Trench in the south. The amount of data in the spatial database is 2.14 GB. The paper introduced the basic construction of ICMA5000. The present map not only provides a fresh insight into the Asian geology with a global vision but also shows the geological relationship between the Asian continent and its neighboring continents and oceans. Its successful completion will surely lay a solid foundation for researches on the tectonics, metallogeny, resources and geological environment of Asia.

1:500万国际亚洲地质图（IGMA5000）由世界地质图委员会（Commission for the Geological Map of the World，CGMW）主导实施，是一项跨国合作项目，集结了来自CGMW下属4个分会的100余名地质学家，以及20个欧亚国家的地质调查机构与科研院所。IGMA5000是首款基于ArcGIS平台搭建、严格遵循国际标准编制的亚洲数字化地质图，同时也是首张覆盖制图区域内海陆全域地质情况的地图，因此其编制工作极具难度与挑战性。该地图的制图范围涵盖整个亚洲及其毗邻区域：西起阿尔卑斯山脉，东至马里亚纳海沟，北至北冰洋，南至爪哇海沟。其空间数据库的数据总量达2.14 GB。本文介绍了IGMA5000的基本架构。本图集不仅以全球视野为亚洲地质研究提供了全新视角，还清晰展现了亚洲大陆与周边大陆、海洋之间的地质联系。该地图的成功编制，必将为亚洲构造学、成矿学、资源与地质环境领域的研究奠定坚实基础。