Home > Archive>Volume 90, Issue 3, 2016 >870-883
PDF HTML XML Export Cite reminder
The Exhumation History of North Qaidam Thrust Belt Constrained by Apatite Fission Track Thermochronology: Implication for the Evolution of the Tibetan Plateau
CSTR:
[cstr]
Author:
Fund Project:

This work was funded by the National Science Foundation of China (Grant No. 41102128, 41330207, 41372206, 41472181, and 41402170), the National S&T Major Project (Grant No. 2016ZX05008-001 and 2016ZX05003-001), Research Funds from Bureau of Education Zhejiang Province (Grant No. Y201019040), and the Fundamental Research Funds for the Central Universities (Grant No. 2016FZA3007). We are grateful to Liu D., Chen X.W., and Zhang M.N. for their assistances in the field work. We appreciate comments from M. Giuditta Fellin and another anonymous reviewer on a previous version and three anonymous reviewers on this manuscript, which lead to a much better publication.

  • Article
    • | |
  • Metrics
    • |
  • Reference
    • |
  • Related
    • |
  • Cited by
    • | |
  • Comments
    Abstract:

    Determining the spatio-temporal distribution of the deformation tied to the India-Eurasian convergence and the impact of pre-existing weaknesses on the Cenozoic crustal deformation is significant for understanding how the convergence between India and Eurasia contributed to the development of the Tibetan Plateau. The exhumation history of the northeastern Tibetan Plateau was addressed in this research using a new apatite fission track (AFT) study in the North Qaidam thrust belt (NQTB). Three granite samples collected from the Qaidam Shan pluton in the north tied to the Qaidam Shan thrust, with AFT ages clustering in the Eocene to Miocene. The other thirteen samples obtained from the Luliang Shan and Yuka plutons in the south related to the Luliang Shan thrust and they have showed predominantly the Cretaceous AFT ages. Related thermal history modeling based on grain ages and track lengths indicates rapid cooling events during the Eocene-early Oligocene and since late Miocene within the Qaidam Shan, in contrast to those in the Cretaceous and since the Oligocene-Miocene in the Luliang Shan and Yuka region. The results, combined with published the Cretaceous thermochronological ages in the Qaidam Shan region, suggest that the NQTB had undergo rapid exhumation during the accretions along the southern Asian Andean-type margin prior to the India-Eurasian collision. The Cenozoic deformation initially took place in the North Qaidam thrust belt by the Eocene, which is consistent with the recent claim that the deformation of the northeastern Tibetan Plateau initiated in the Eocene as a response to continental collision between India and Eurasia. The immediate deformation responding to the collision is tentatively attributed to the pre-existing weaknesses of the lithosphere, and therefore the deformation of the northeastern Tibetan Plateau should be regarded as a boundary-condition-dependent process.

    Reference
    Related
    Cited by
Get Citation

CHENG Xiaogan, LIN Xiubin, WU Lei, CHEN Hanlin, XIAO Ancheng, GONG Junfeng, ZHANG Fengqi, YANG Shufeng.2016. The Exhumation History of North Qaidam Thrust Belt Constrained by Apatite Fission Track Thermochronology: Implication for the Evolution of the Tibetan Plateau[J]. Acta Geologica Sinica(),90(3):870-883

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:February 02,2016
  • Revised:April 05,2016
  • Online: June 21,2016
Article QR Code
You are the Visitors
Governing Body：China Association for Science and Technology
Organizer：Geological Society of China
Address：No. 26 Baiwanzhuang Street, Xicheng District, Beijing 100037, China
Phone：010-68999024

京公网安备 11000002000088号 | 京ICP备11041704号
® 2025 All Rights Reserved