The seismic reflection profile from Yexian of Henan across the Qinling Mountains to Nanzhang of Hubei shows that the crust of the Qinling orogen is composed of multiple crocodile-shaped structures wedging from south to north into the mid-crust. Two nappe
袁学诚.1997.秦岭造山带地壳构造与楔入成山[J].地质学报,71(3). Yuan Xuecheng.1997. THE CRUSTAL STRUCTURE OF THE QINLING OROGEN AND WEDGING MOUNTAIN BUILDING[J]. Acta Geologica Sinica,71(3).