Cretaceous and Cenozoic cooling history of the eastern Qilian Shan, north-eastern margin of the Tibetan Plateau: evidence from apatite fission-track analysis
Pan, BT; Li, QY; Hu, XF; Geng, HP; Liu, ZB; Jiang, SF; Yuan, WM;袁万明
刊名TERRA NOVA
2013
卷号25期号:6页码:431-438
学科分类Geology
DOI10.1111/ter.12052
英文摘要The exhumation history and tectonic evolution of the Qilian Shan at the north-eastern margin of the Tibetan Plateau has been widely debated. Here, we present apatite fission-track (AFT) data for 12 Ordovician granodiorite samples along a vertical transect in the eastern Qilian Shan. These thermochronometry data indicate that the eastern Qilian Shan experienced a three-stage cooling history, including: (i) rapid initial cooling in the late Cretaceous; (ii) a stage of quasi isothermal quiescence from similar to 80 to 24Ma; and (iii) rapid subsequent cooling beginning in the early Miocene. The inferred cooling rates for the three stages are 6.8 +/- 4.9 degrees CMa(-1), 0.6 +/- 0.2 degrees CMa(-1) and 2.7 +/- 0.9 degrees CMa(-1) respectively (+/- 1 sigma). Assuming a geothermal gradient of 25 degrees Ckm(-1), the exhumation rates for the three stages are 0.27 +/- 0.20mma(-1), 0.017 +/- 0.007mma(-1) and 0.11 +/- 0.04mma(-1) respectively (+/- 1 sigma). We suggest that the late Cretaceous cooling records collision of the Lhasa block with the Eurasian continent and that the Miocene cooling represents uplift/exhumation of the Qilian Shan.
收录类别SCI
WOS记录号WOS:000326180500001
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被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/223981
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
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Pan, BT,Li, QY,Hu, XF,et al. Cretaceous and Cenozoic cooling history of the eastern Qilian Shan, north-eastern margin of the Tibetan Plateau: evidence from apatite fission-track analysis[J]. TERRA NOVA,2013,25(6):431-438.
APA Pan, BT.,Li, QY.,Hu, XF.,Geng, HP.,Liu, ZB.,...&Yuan, WM;袁万明.(2013).Cretaceous and Cenozoic cooling history of the eastern Qilian Shan, north-eastern margin of the Tibetan Plateau: evidence from apatite fission-track analysis.TERRA NOVA,25(6),431-438.
MLA Pan, BT,et al."Cretaceous and Cenozoic cooling history of the eastern Qilian Shan, north-eastern margin of the Tibetan Plateau: evidence from apatite fission-track analysis".TERRA NOVA 25.6(2013):431-438.
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