This paper investigates the tectonic evolution of the Mongolian Orocline in Central Asia, focusing on the relationship between oroclinal bending, crustal thickening, and arc migration. Using geochronological and geochemical data from Permian-Triassic magmatic rocks, the authors demonstrate that arc magmatism became younger towards the core of the orocline during this period, accompanied by crustal thickening as indicated by La/Yb ratios. This suggests significant crustal-scale contraction in the inner hinge zone of the orocline in response to bending, offering a new perspective on the formation of elevated topography around curved plate boundaries.
