APPLICATION OF GIS IN 1∶50 000 REGIONAL GEOLOGICAL SURVEY OF THE YUGUANZHEN SHEET

This paper discusses the application of the Geo Information System （GIS） in processing and editing all kinds of spatial data obtained during the 1∶50 000 regional geological survey of the Yuguanzhen Sheet east of Hebei province. The work includes collection of field data, map layer division and compilation of map forms and raster scan images. A comprehensive GIS data bank of the Yuguanzhen Sheet has been set up.