1∶50 000 Geological Map Database of the Juligetai Map-sheet, Inner Mongolia

The 1∶50 000 Geological Map of the Juligetai Map-sheet (K48E017019), Inner Mongolia was compiled according to the ‘Technical Requirements for Regional Geological Surveys (1∶50 000)’ (DD 2006-XX) and other uniform standards and requirements. It also makes full use of the data from the 1∶200 000 regional geological survey and 1∶50 000 mineral resource survey, and adopts various remote sensing imagery systems including Spot, ETM and Aster. It is an important mapping achievement guided by the orogenic belt theory. In the current project, a geological mapping method for complex tectonic areas was used to creatively express the structural features in multiple stages and their attitude features in geological maps. The map comprehensively reflects the spatial distribution of different intrusive bodies and magmatic sequence of intrusive rocks in the Wulatehou Banner in Langshan area, as well as the rhythm and deformation characteristics, sedimentary age and sedimentary environment of metamorphic sedimentary rocks of the Zhaertaishan Group. The wall-rocks of the Huogeqi Copper Deposit was further identified as carbonaceous-calcareous slates of the Agulugou Formation’s second member. The deposit is mostly located at the hinge zone of the schistose fold in the stratum. The map database includes 3 informal mapping units, 12 official mapping units, 3 periods of magmatic events and 3 tectonic deformations, in addition to 120 pieces of petrochemical analysis data and zircon U–Pb age data of 13 samples, with a data size of 106 MB. The database represents an exemplary result of the 1∶50 000 orogenic belt geological survey. It plays a leading role in orogenic belt mapping and is able to support subsequent basic geological research and prospecting by providing essential basic data.