The Qinling-Dabie orogenic belt was formed during the collision between the North China Craton and the Yangtze Block. A large volume of the high-pressure (HP) and ultra-high-pressure (UHP) metamorphic rocks are exposed in the eastern Dabie Mountains. In order to better understand the collision processes and the exhumation mechanism of the HP/UHP rocks, we process ambient noise data recorded at stations in the Qinling-Dabie orogenic belt and surrounding areas to extract broadband Rayleigh wave dispersion curves at 8–95 s periods. Using these dispersion curves, we construct a high-resolution 3-D shear wave velocity model of the Qinling-Dabie orogenic belt and surrounding regions. Our 3-D model reveals high velocities in the uppermost mantle beneath the western Dabie Mountains and also beneath the western Qinling Mountains, suggesting the presence of remnant continental lithosphere from the past continental subduction. Low velocities in the lower crust and uppermost mantle beneath the eastern Qinling and eastern Dabie are imaged, suggesting the continental lithosphere delaminated in the past. Our 3-D model supports a two-stage exhumation model of the HP/UHP rocks in the eastern Dabie orogenic belt, in which HP/UHP rocks were first exhumed to the mid/lower crust in the first stage and were then further exhumed to the surface under the driving force of the upper mantle upwelling induced by the lithosphere delamination.

秦岭-大别造山带是华北克拉通与扬子地块碰撞形成的。大别山东部大面积的高压（HP）和超高压（UHP）变质岩裸露。为了更好地了解HP / UHP岩石的碰撞过程和掘出机制，我们处理了在秦岭-大别造山带及其周边地区站点记录的环境噪声数据，以提取8–95 s周期的宽带瑞利波频散曲线。 。利用这些弥散曲线，我们构建了秦岭-大别造山带及其周围地区的高分辨率3-D剪切波速度模型。我们的3D模型揭示了大别山西部和秦岭西部最下层地幔的高速度，这表明过去大陆俯冲过程中存在残留的大陆岩石圈。拍摄了东秦岭和大别东部以下地壳和最高地幔的低速影像，表明过去的大陆岩石圈是分层的。我们的3-D模型支持大别造山带东部HP / UHP岩石的两阶段掘进模型，在该模型中，HP / UHP岩石在第一阶段首先被掘出到中/下地壳，然后被进一步掘出为在岩石圈脱层引起的上地幔上升流的驱动力作用下的表面。