During decratonization, the cratonic lithosphere mantle experienced composition transformation and thinning, which have been extensively studied in the North China Craton. Yet, modification from refractory lithospheric mantle to fertile one remains enigmatic due to a shortage of seismically resolvable data on the lithospheric internal structures. New high-resolution normal incidence seismic reflection transect documents: coexistence of two lithospheric mantles with different reflection characteristics, lithosphere-scale domes, boudinage upper-crust, and Cenozoic faulted basins. Reflective and transparent mantles are interpreted to represent the cratonic and the newly formed lithospheric mantles, respectively. The irregular contact boundaries between the ancient and newly formed lithospheric mantles are revealed as channel-like structures within the mantle, which possibly provide pathways for the rise of melts and/or fluids from the deep mantle. The deep melts/fluids rising through the channel-like structures are key elements that enable generation of the newly formed lithospheric mantle, and provide means for the modification of cratonic lithospheric mantle.

中文翻译：

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去克拉通化岩石圈成像：以华北克拉通东部为例

克拉通岩石圈地幔在去克拉通化过程中经历了成分转变和变薄，这在华北克拉通已被广泛研究。然而，由于缺乏关于岩石圈内部结构的地震可分辨数据，从难熔岩石圈地幔到肥沃地幔的变化仍然是个谜。新的高分辨率正入射地震反射断面文件：两种不同反射特征的岩石圈地幔共存、岩石圈尺度穹顶、布丁上地壳和新生代断陷盆地。反射地幔和透明地幔被解释为分别代表克拉通和新形成的岩石圈地幔。古代和新形成的岩石圈地幔之间的不规则接触边界在地幔内被揭示为通道状结构，这可能为深部地幔的熔体和/或流体的上升提供了通道。通过通道状构造上升的深层熔体/流体是形成新形成的岩石圈地幔的关键因素，并为克拉通岩石圈地幔的改造提供了手段。