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Articles | Volume 16, issue 11
Articles | Volume 16, issue 11
https://doi.org/10.5194/se-16-1383-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/se-16-1383-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 11
Research article
 | 
13 Nov 2025
Research article |  | 13 Nov 2025

Crustal-upper mantle velocity structure from the North Qilian Shan to Beishan Orogenic Collage: tectonic significance of crustal deformation

Xiaosong Xiong, Yingkang Li, Xuanhua Chen, Guowei Wu, Rui Gao, and Jennifer D. Eccles

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Short summary
New seismic data across the Qilian Shan–Beishan transect image a 47.5–60 km, five-layer crust with strong lateral heterogeneity. North-dipping mantle fabrics and a fossil slab beneath the Hongliuhe–Xichangjing ophiolite record Paleozoic northward subduction of both Qilian and Beishan oceans. The Altyn Tagh Fault is traced east-northeast along the Beishan southern margin into the Alxa Block.
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Seismic imaging from the lithosphere to the near surface