Onset timing of significant unroofing around Qaidam basin, northern Tibet, China: Constraints from 40Ar/39Ar and FT thermochronology on granitoids

Fei Wang, Ching Hua Lo, Qi Li, Meng Wan Yeh, Jinglin Wan, Dewen Zheng, Erqi Wang

研究成果: 雜誌貢獻文章

90 引文 斯高帕斯(Scopus)

摘要

40Ar/39Ar and fission track thermochronological results from two granitoid suites in the mountain ranges along the northern and southern edges of Qaidam basin constrain the timing of a Tertiary denudation event and their tectonic association in northern Tibet. The cooling histories based upon 40Ar/ 39Ar and fission track ages suggest a rapid cooling event (7.5-10.7 °C/Ma) during Oligocene-early Miocene time. This cooling event is thought to reflect an increasing denudation rate associated with the rapid uplift and denudation of the North Qaidam and Kunlun Shan mountain ranges. With consideration to the field evidence, sedimentation rate of the Qaidam basin, and the propagation rate along the Altyn Tagh fault, the rapid uplifting and denudation are probably due to crustal thickening associated with Cenozoic propagation of the Altyn Tagh fault in accommodating the collision of India with Asia.

原文英語
頁(從 - 到)59-69
頁數11
期刊Journal of Asian Earth Sciences
24
發行號1
DOIs
出版狀態已發佈 - 2004 十月

ASJC Scopus subject areas

  • Geology
  • Earth-Surface Processes

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