The structures developed in the area mainly include straight slopes, anticlines, and normal faults. In the exploration area, the monoclinal structure is the main body, and the change in strike and inclination of the coal seam is dominated by slow wave relief. No significant fault structures were identified, so the exploration area falls under the simple structure type. The coal-bearing strata in this area are the Shanxi Formation of the Lower Permian Series (P1s) and the Taiyuan Formation of the Upper Carboniferous Series (C3t), which are a set of terrigenous clastic coal-bearing deposits with calcareous rocks, with a total thickness of about 110–160 m, and its paleogeographic environment belongs to the offshore inland basin type. No. 5 and No. 6 coal are recoverable coal seams in the Haerwusu mining area. The weathered denudation of potassium feldspar granite in the Yinshan ancient land in the north of the coalfield provides the main source of Li enrichment in the Jungar coalfield. The further weathering and denudation of bauxite in the Benxi Formation caused by the Luliang Paleo uplift in tectonic movement also provided the source for the Jungar coalfield, and its paleogeographic environment belongs to the offshore inland basin type.

The No. 6 coal seam is a bituminous coal, with a thickness of 25.53–39.32 m and an average thickness of 33.70 m; the whole area can be mined as the thickness is vast, the structure is simple, and the partings are mostly concentrated in the middle and upper parts of the No. 6 coal seam.

Other Regions, Features and Areas containing this locality

References