Onset timing of significant unroofing around Qaidam basin, northern Tibet, China: constraints from 40Ar/39Ar and FT thermochronology on granitoids
Wang, Fei, Lo, Ching-Hua, Li, Qi, Yeh, Meng-Wan, Wang, Jinglin, Zheng, Dewen, and Wang, Erqi (2004) Onset timing of significant unroofing around Qaidam basin, northern Tibet, China: constraints from 40Ar/39Ar and FT thermochronology on granitoids. Journal of Asian Earth Sciences, 24 (1). pp. 59-69.
|PDF (Published Version) - Repository staff only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader|
View at Publisher Website: http://dx.doi.org/10.1016/j.jseaes.2003....
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.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||fission track dating; multi-domain diffusion model; Qaidam basin; unroofing; 40Ar/39/Ar dating|
|FoR Codes:||04 EARTH SCIENCES > 0403 Geology > 040303 Geochronology @ 100%|
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970104 Expanding Knowledge in the Earth Sciences @ 100%|
|Deposited On:||17 Nov 2010 12:51|
|Last Modified:||12 Feb 2011 19:53|
Last 12 Months: 0
Repository Staff Only: item control page