The deep crustal deformation in the east Pamir in response to the Cenozoic collision with the Tien Shan and the Tarim Basin is so far poorly constrained. We present new insights into the crustal structure of the east Pamir and its surrounding regions using P receiver functions from 40 temporary and permanent seismic stations. The crustal thickness reaches a maximum of 88 km beneath the central and southern east Pamir and decreases sharply to 50–60 km along the southern Tien Shan and to 41–50 km below the Tarim Basin. The most prominent crustal structures involve a double Moho, suggesting eastward underthrusting of the Pamir lower crust beneath southern east Pamir, and two Moho offsets, supporting delamination of Asian lower crust below the central east Pamir and pure shear shortening along the northeastern margin between the Pamir and Tarim Basin.

中文翻译：

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接收器函数推导的帕米尔和塔里木盆地之间的深地壳接触

迄今为止，响应与天山和塔里木盆地的新生代碰撞，东帕米尔东部的深层地壳变形受到的约束很有限。我们利用来自40个临时和永久地震台站的P接收器功能，提供了对东帕米尔及其周边地区地壳结构的新见解。地壳厚度在帕米尔中部和东部南部以下达到最大88 km，沿天山南部急剧下降到50–60 km，在塔里木盆地以下急剧下降到41–50 km。最显着的地壳结构涉及双重莫霍面，表明东帕米尔南部以下的帕米尔下部地壳向东下冲，并且有两个莫霍面偏移，支持了帕米尔东部中部以下亚洲下部地壳的分层以及沿帕米尔之间东北边缘的纯剪切缩短和塔里木盆地。