Timing of India-Asia collision and significant coupling between them around 51 Ma: Insights from the activation history of the Zhongba-Gyangze thrust in southern Tibet
文献类型：期刊论文
| 作者 | Zhao, Qi2,3; Yan, Yi2,3; Tonai, Satoshi1; Dilek, Yildirim5; Zhu, Zuofei4 |
| 刊名 | GEOLOGY
 |
| 出版日期 | 2024 |
| 卷号 | 52期号:1页码:61-66 |
| ISSN号 | 0091-7613 |
| DOI | 10.1130/G51615.1 |
| 英文摘要 | Constraining the timing of tectonic coupling between converging plates is crucial for understanding the transition from continental subduction to continental collision. In the case of the India-Asia collision, thrusting of an accretionary complex onto the Indian continental margin provides the most direct temporal constraint on the early stages of continental collision, as it represents the most immediate upper-crustal fault system corresponding to plate coupling. Here, we used structural analysis combined with K-Ar dating and hydrogen isotopes of authigenic illite and muscovite to unravel the time-progressive development of the Zhongba-Gyangze thrust (ZGT), which represents a tectonic boundary fault in southern Tibet. Our results suggest that the ZGT evolved from its initiation as a single fault zone infiltrated by metamorphic fluids with high delta D values (-47%0 to -55%0) at ca. 80 Ma to multiple deformation localization zones starting around 51 Ma. This latter phase is represented by the development of different generations of authigenic 1 M/1Md illite and significant input of meteoric fluids with delta D values ranging from -71%0 to -98%0 through multiple episodes of brittle fault reactivation. A Late Cretaceous tectono-thermal event related to the subduction of a Neotethyan oceanic ridge may have been responsible for the formation of 2M1 illite/ muscovite at ca. 80 Ma. The oldest (ca. 51 Ma) 1 M/1Md illite age coincides with the first major pulse of shortening in the upper plate after the initial India-Asia contact. Given the synchronous deceleration of India-Asia convergence, the ca. 51 Ma deformation pulse across the Yarlung-Zangbo suture zone demarcates strong coupling (i.e., the onset of continental collision) between India and Asia at this time. |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001186997700012 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77063]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Yan, Yi |
| 作者单位 | 1.Kochi Univ, Fac Sci & Technol, Kochi 7808520, Japan 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 4.Sanya Inst South China Sea Geol, Guangzhou Marine Geol Survey, Sanya 572025, Peoples R China 5.Miami Univ, Dept Geol & Environm Earth Sci, Oxford, OH 45056 USA |
| 推荐引用方式 GB/T 7714 | Zhao, Qi,Yan, Yi,Tonai, Satoshi,et al. Timing of India-Asia collision and significant coupling between them around 51 Ma: Insights from the activation history of the Zhongba-Gyangze thrust in southern Tibet[J]. GEOLOGY,2024,52(1):61-66. |
| APA | Zhao, Qi,Yan, Yi,Tonai, Satoshi,Dilek, Yildirim,&Zhu, Zuofei.(2024).Timing of India-Asia collision and significant coupling between them around 51 Ma: Insights from the activation history of the Zhongba-Gyangze thrust in southern Tibet.GEOLOGY,52(1),61-66. |
| MLA | Zhao, Qi,et al."Timing of India-Asia collision and significant coupling between them around 51 Ma: Insights from the activation history of the Zhongba-Gyangze thrust in southern Tibet".GEOLOGY 52.1(2024):61-66. |
入库方式： OAI收割
来源：广州地球化学研究所
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