Distinct lithospheric structure in the Xing'an-Mongolian orogenic belt
Detailed knowledge of the lithospheric structure is essential for a better understanding of the tectonic evolution of the Xing'an-Mongolian Orogenic Belt (XMOB). We constrained the lithospheric structure across the XMOB by receiver function imaging and shear wave splitting analysis from a dense...
| Main Authors: | , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Online Access: | https://hdl.handle.net/10356/170762 |
| _version_ | 1811694188829343744 |
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| author | He, Yang Chen, Qi-Fu Chen, Ling Wang, Xin Guo, Guangrui Li, Tianjue Zhang, Kaiwen Li, Juan Chen, Yun |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences He, Yang Chen, Qi-Fu Chen, Ling Wang, Xin Guo, Guangrui Li, Tianjue Zhang, Kaiwen Li, Juan Chen, Yun |
| author_sort | He, Yang |
| collection | NTU |
| description | Detailed knowledge of the lithospheric structure is essential for a better understanding of the tectonic evolution of the Xing'an-Mongolian Orogenic Belt (XMOB). We constrained the lithospheric structure across the XMOB by receiver function imaging and shear wave splitting analysis from a dense seismic array. The lithosphere-asthenosphere boundary (LAB) is coherently imaged in different tectonic blocks. The mid-lithospheric discontinuity is also identified at ∼75–100 km depth over the deeper LAB (∼110–130 km) beneath the western side of the North-South Gravity Lineament (NSGL), roughly at the same depth as the LAB beneath the eastern side of the NSGL. The distinct variations in both the lithospheric structure and fast shear-wave polarization direction across the NSGL are likely caused by different tectonic processes in the two sides, indicating that the NSGL might represent the western boundary influenced by the subduction of the (Paleo-)Pacific Plate. Lithosphere thinning in the XMOB is evidenced to have been limited mainly to the east of the NSGL. |
| first_indexed | 2024-10-01T07:03:37Z |
| format | Journal Article |
| id | ntu-10356/170762 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:03:37Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1707622023-10-09T15:35:19Z Distinct lithospheric structure in the Xing'an-Mongolian orogenic belt He, Yang Chen, Qi-Fu Chen, Ling Wang, Xin Guo, Guangrui Li, Tianjue Zhang, Kaiwen Li, Juan Chen, Yun School of Physical and Mathematical Sciences Earth Observatory of Singapore Science::Geology Lithosphere-asthenosphere Boundary Mid-lithospheric Discontinuity Detailed knowledge of the lithospheric structure is essential for a better understanding of the tectonic evolution of the Xing'an-Mongolian Orogenic Belt (XMOB). We constrained the lithospheric structure across the XMOB by receiver function imaging and shear wave splitting analysis from a dense seismic array. The lithosphere-asthenosphere boundary (LAB) is coherently imaged in different tectonic blocks. The mid-lithospheric discontinuity is also identified at ∼75–100 km depth over the deeper LAB (∼110–130 km) beneath the western side of the North-South Gravity Lineament (NSGL), roughly at the same depth as the LAB beneath the eastern side of the NSGL. The distinct variations in both the lithospheric structure and fast shear-wave polarization direction across the NSGL are likely caused by different tectonic processes in the two sides, indicating that the NSGL might represent the western boundary influenced by the subduction of the (Paleo-)Pacific Plate. Lithosphere thinning in the XMOB is evidenced to have been limited mainly to the east of the NSGL. Published version This work is supported by the National Natural Science Foundation of China (grants 41774058, 91958209, and 41688103) and the Stra-tegic Priority Research Program (B) of the Chinese Academy of Sciences (grant XDB18000000). 2023-10-07T13:03:21Z 2023-10-07T13:03:21Z 2022 Journal Article He, Y., Chen, Q., Chen, L., Wang, X., Guo, G., Li, T., Zhang, K., Li, J. & Chen, Y. (2022). Distinct lithospheric structure in the Xing'an-Mongolian orogenic belt. Geophysical Research Letters, 49(8), e2021GL097283-. https://dx.doi.org/10.1029/2021GL097283 0094-8276 https://hdl.handle.net/10356/170762 10.1029/2021GL097283 2-s2.0-85128959558 8 49 e2021GL097283 en Geophysical Research Letters © 2022 American Geophysical Union. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1029/2021GL097283. application/pdf |
| spellingShingle | Science::Geology Lithosphere-asthenosphere Boundary Mid-lithospheric Discontinuity He, Yang Chen, Qi-Fu Chen, Ling Wang, Xin Guo, Guangrui Li, Tianjue Zhang, Kaiwen Li, Juan Chen, Yun Distinct lithospheric structure in the Xing'an-Mongolian orogenic belt |
| title | Distinct lithospheric structure in the Xing'an-Mongolian orogenic belt |
| title_full | Distinct lithospheric structure in the Xing'an-Mongolian orogenic belt |
| title_fullStr | Distinct lithospheric structure in the Xing'an-Mongolian orogenic belt |
| title_full_unstemmed | Distinct lithospheric structure in the Xing'an-Mongolian orogenic belt |
| title_short | Distinct lithospheric structure in the Xing'an-Mongolian orogenic belt |
| title_sort | distinct lithospheric structure in the xing an mongolian orogenic belt |
| topic | Science::Geology Lithosphere-asthenosphere Boundary Mid-lithospheric Discontinuity |
| url | https://hdl.handle.net/10356/170762 |
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