六盘山国家公园候选区地质遗迹及其地学意义OA

Liupan Mountain is located in the Loess Plateau area in the southern part of Ningxia and has under-gone complex tectonic evolution and surface processes since the Triassic period.It is an important area for studying the uplift of the Tibetan Plateau and its impact on surrounding areas.Based on field geological surveys and research findings,and in accordance with DZ/T 0303-2017,a classification and screening of geological rel-ics was conducted,identifying a total of 31 geological relic points.These encompass seven categories:strati-graphic profiles,structural profiles,fossil sites,geomorphology of rock and soil bodies,water body geomor-phology,structural geomorphology,and geological disaster relics.The results demonstrate that the geological relics in the candidate area of Liupan Mountain National Park record the sedimentary-tectonic response process of the northeastern edge of the Tibetan Plateau's tectonic expansion on a regional scale;on a global scale,they can be compared with terrestrial sedimentary responses during the Cretaceous greenhouse period(such as OAE1),the evolution of the frontal thrust-slip composite tectonic belt,and the red bed Danxia landforms in arid and semi-arid regions.The stratigraphic and structural profiles provide examples of strain distribution pro-cesses during continental collision,while fossils and fossil relics provide evidence for terrestrial responses to cli-matic anomalies during the Cretaceous period.The combination of Danxia-gorge-landslide geomorphology reflects the coupling mechanism of tectonic uplift and external forces.The study,protection,and rational utili-zation of these geological relics can provide important support for the planning,protection,and sustainable development of Liupan Mountain National Park,as well as for regional ecological protection and economic coor-dinated development.