Linxia UNESCO Global Geopark is located on the east side of the Taizishan fold fault zone in the northern part of the West Qinling block, on the southern edge of the Tianshui-Linxia fault basin. The geological formation and structure in the area are relatively simple.Metamorphic rocks: The metamorphic rocks in the geopark are developed in the Paleoproterozoic strata and the strata are the Maxianshan Group (Pt1M.). The main rock types are quartz schist, biotite plagioclase gneiss, amphibolite and calcite marble.Geological development history: The geological history of the geopark can be traced back to the Proterozoic more than 2 billion years. But the most significant is the period of earth history since the Cretaceous. During the Cretaceous, this area has evolved into an inland basin, forming very thick fluvial and lacustrine deposits, namely the Hekou group in the geopark. The Yanshan Movement at the end of the Late Cretaceous terminated the sedimentation history of the Cretaceous and caused widespread deformation of the Cretaceous red beds, forming relatively wide folds, thrust faults in the basin margin, intra-basin reverse and normal faults. As a result, the Paleocene-Eocene Xiliugou Formation overlies the Lower Cretaceous Hekou group in angular unconformity. The Cenozoic development history of the geopark is the evolution history of the 5 Linxia Basin and of the mammals. In the Paleogene, the climate is hot and dry, the Paleogene-Eocene strata is a set of maroon continental clastic rocks; in the Eocene-Oligocene, the With the frequent fluctuations of the Quaternary climate, the equus fauna was extinct. By the late Pleistocene, a large area of aeolian loess was deposited in the geopark; as the climate got warmed after the last glacial period, a great deal of ancient humans lived here, left many ancient human cultural sites.