Illite K‐Ar Dating of the Leibo Fault Zone, Southeastern Margin of the Tibetan Plateau: Implications for the Quasi‐Synchronous Far‐Field Tectonic Response to the India‐Asia Collision
Abstract Whether tectonic strain from the early stage India‐Asia collision has synchronously affected the far‐field margin of the Tibetan Plateau is crucial for understanding plateau deformation and growth processes. However, direct evidence for early far‐field deformation remains scarce. Utilizing...
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| Format: | Article |
| Language: | English |
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Wiley
2024-03-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2023GL108027 |
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| author | Yuanhai Shu Xuhua Shi Samuel Haines Hanlin Chen Yong Zheng Kongyang Zhu Rong Yang Haibing Li Zhuona Bai Jinhan Wang Shufeng Yang |
| author_facet | Yuanhai Shu Xuhua Shi Samuel Haines Hanlin Chen Yong Zheng Kongyang Zhu Rong Yang Haibing Li Zhuona Bai Jinhan Wang Shufeng Yang |
| author_sort | Yuanhai Shu |
| collection | DOAJ |
| description | Abstract Whether tectonic strain from the early stage India‐Asia collision has synchronously affected the far‐field margin of the Tibetan Plateau is crucial for understanding plateau deformation and growth processes. However, direct evidence for early far‐field deformation remains scarce. Utilizing illite K‐Ar dating of three fault gouge samples, we established the faulting history of the Leibo fault zone (LFZ) at the southeastern margin of the Tibetan Plateau (SEMTP). Consistent authigenic illite ages of 52 ± 2, 54 ± 12 and 55 ± 6 Ma suggest the reactivated thrust faulting of the LFZ in the Early Cenozoic. Positioned ∼700 km east of the collisional boundary and at the intersection of three blocks with distinct lithospheric rheology in strength/viscosity, this event suggests a quasi‐synchronous far‐field tectonic response in the SEMTP to the India‐Asia collision. |
| format | Article |
| id | doaj-art-d594bbd1d1194b4cb2aea701e49a6430 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-d594bbd1d1194b4cb2aea701e49a64302025-08-20T02:31:37ZengWileyGeophysical Research Letters0094-82761944-80072024-03-01516n/an/a10.1029/2023GL108027Illite K‐Ar Dating of the Leibo Fault Zone, Southeastern Margin of the Tibetan Plateau: Implications for the Quasi‐Synchronous Far‐Field Tectonic Response to the India‐Asia CollisionYuanhai Shu0Xuhua Shi1Samuel Haines2Hanlin Chen3Yong Zheng4Kongyang Zhu5Rong Yang6Haibing Li7Zhuona Bai8Jinhan Wang9Shufeng Yang10Key Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth Sciences Zhejiang University Hangzhou ChinaKey Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth Sciences Zhejiang University Hangzhou ChinaDanish Offshore Technology Centre Kongens Lyngby DenmarkKey Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth Sciences Zhejiang University Hangzhou ChinaInstitute of Geology Chinese Academy of Geological Sciences Beijing ChinaKey Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth Sciences Zhejiang University Hangzhou ChinaKey Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth Sciences Zhejiang University Hangzhou ChinaInstitute of Geology Chinese Academy of Geological Sciences Beijing ChinaKey Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth Sciences Zhejiang University Hangzhou ChinaKey Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth Sciences Zhejiang University Hangzhou ChinaKey Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth Sciences Zhejiang University Hangzhou ChinaAbstract Whether tectonic strain from the early stage India‐Asia collision has synchronously affected the far‐field margin of the Tibetan Plateau is crucial for understanding plateau deformation and growth processes. However, direct evidence for early far‐field deformation remains scarce. Utilizing illite K‐Ar dating of three fault gouge samples, we established the faulting history of the Leibo fault zone (LFZ) at the southeastern margin of the Tibetan Plateau (SEMTP). Consistent authigenic illite ages of 52 ± 2, 54 ± 12 and 55 ± 6 Ma suggest the reactivated thrust faulting of the LFZ in the Early Cenozoic. Positioned ∼700 km east of the collisional boundary and at the intersection of three blocks with distinct lithospheric rheology in strength/viscosity, this event suggests a quasi‐synchronous far‐field tectonic response in the SEMTP to the India‐Asia collision.https://doi.org/10.1029/2023GL108027Leibo fault zonefault gougeillite K‐Ar datingquasi‐synchronous far‐field tectonic responsesoutheastern margin of the Tibetan PlateauIndia‐Asia collision |
| spellingShingle | Yuanhai Shu Xuhua Shi Samuel Haines Hanlin Chen Yong Zheng Kongyang Zhu Rong Yang Haibing Li Zhuona Bai Jinhan Wang Shufeng Yang Illite K‐Ar Dating of the Leibo Fault Zone, Southeastern Margin of the Tibetan Plateau: Implications for the Quasi‐Synchronous Far‐Field Tectonic Response to the India‐Asia Collision Geophysical Research Letters Leibo fault zone fault gouge illite K‐Ar dating quasi‐synchronous far‐field tectonic response southeastern margin of the Tibetan Plateau India‐Asia collision |
| title | Illite K‐Ar Dating of the Leibo Fault Zone, Southeastern Margin of the Tibetan Plateau: Implications for the Quasi‐Synchronous Far‐Field Tectonic Response to the India‐Asia Collision |
| title_full | Illite K‐Ar Dating of the Leibo Fault Zone, Southeastern Margin of the Tibetan Plateau: Implications for the Quasi‐Synchronous Far‐Field Tectonic Response to the India‐Asia Collision |
| title_fullStr | Illite K‐Ar Dating of the Leibo Fault Zone, Southeastern Margin of the Tibetan Plateau: Implications for the Quasi‐Synchronous Far‐Field Tectonic Response to the India‐Asia Collision |
| title_full_unstemmed | Illite K‐Ar Dating of the Leibo Fault Zone, Southeastern Margin of the Tibetan Plateau: Implications for the Quasi‐Synchronous Far‐Field Tectonic Response to the India‐Asia Collision |
| title_short | Illite K‐Ar Dating of the Leibo Fault Zone, Southeastern Margin of the Tibetan Plateau: Implications for the Quasi‐Synchronous Far‐Field Tectonic Response to the India‐Asia Collision |
| title_sort | illite k ar dating of the leibo fault zone southeastern margin of the tibetan plateau implications for the quasi synchronous far field tectonic response to the india asia collision |
| topic | Leibo fault zone fault gouge illite K‐Ar dating quasi‐synchronous far‐field tectonic response southeastern margin of the Tibetan Plateau India‐Asia collision |
| url | https://doi.org/10.1029/2023GL108027 |
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