A thermochronological perspective on the morphotectonic evolution of the southeastern Tibetan Plateau | |
Tian, Yuntao1; Kohn, Barry P.1; Gleadow, Andrew J. W.1; Hu, Shengbiao2 | |
刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH |
2014 | |
卷号 | 119期号:1页码:676-698 |
关键词 | landscape evolution Tibetan Plateau thermochronology continental tectonics |
ISSN号 | 2169-9313 |
DOI | 10.1002/2013JB010429 |
文献子类 | Review |
英文摘要 | A large part of the southeastern Tibetan Plateau (TP) is characterized by low-relief surfaces at high elevations (>3.5km). The origin of these landscapes and their geodynamic implications with regard to evolution of the southeastern TP has been the subject of considerable debate. Focusing on this topic, this study utilizes fission track and (U-Th)/He thermochronology to reconstruct the thermal history of the Late Triassic Daocheng granite, on which a low-relief high-elevation landscape has developed. Results suggest that the plateau surface experienced widespread Late Jurassic to Early Cretaceous cooling (at a rate of similar to 1-2 degrees C/Ma), followed by minimal regional cooling (similar to 0.3 degrees C/Ma) and Early Miocene enhanced cooling (similar to 2-3 degrees C/Ma) along deep valleys at the southern edge of the landscape. Given the subdued Late Jurassic to Early Cretaceous crustal deformation in the study area, we relate the coeval cooling to crustal refrigeration and exhumation triggered by northward subduction of the Meso-Tethys Ocean along the Bangong suture. Subsequent Late Cretaceous to Cenozoic minimal cooling supports arguments for the formation of a low-elevation landform prior to uplift of the southeastern TP. The enhanced cooling commenced at the Early Miocene (similar to 15-22Ma) along deep valleys and heralded the onset of river incision and surface uplift of the southeastern TP. This finding does not support previous proposals claiming that high elevations of the southeastern TP were formed in Late Miocene time resulting from lower crustal flow but rather supports a model highlighting continental subduction and extrusion along the large Tanggula-Yushu-Batang-Red River fault system. |
WOS关键词 | INDIA-ASIA COLLISION ; EAST-CENTRAL TIBET ; RIVER SHEAR ZONE ; APATITE (U-TH)/HE THERMOCHRONOMETRY ; LOW-TEMPERATURE THERMOCHRONOMETRY ; FISSION-TRACK THERMOCHRONOLOGY ; MESOZOIC TECTONIC EVOLUTION ; SHALLOW-ANGLE SUBDUCTION ; SHAN FORELAND BASIN ; YIDUN ARC |
WOS研究方向 | Geochemistry & Geophysics |
语种 | 英语 |
出版者 | AMER GEOPHYSICAL UNION |
WOS记录号 | WOS:000333033400040 |
资助机构 | China National Oil-Gas Major Special Projects(2011ZX05008-002) ; China National Oil-Gas Major Special Projects(2011ZX05008-002) ; IPRS ; IPRS ; MIRS ; MIRS ; University of Melbourne ; University of Melbourne ; China National Oil-Gas Major Special Projects(2011ZX05008-002) ; China National Oil-Gas Major Special Projects(2011ZX05008-002) ; IPRS ; IPRS ; MIRS ; MIRS ; University of Melbourne ; University of Melbourne ; China National Oil-Gas Major Special Projects(2011ZX05008-002) ; China National Oil-Gas Major Special Projects(2011ZX05008-002) ; IPRS ; IPRS ; MIRS ; MIRS ; University of Melbourne ; University of Melbourne ; China National Oil-Gas Major Special Projects(2011ZX05008-002) ; China National Oil-Gas Major Special Projects(2011ZX05008-002) ; IPRS ; IPRS ; MIRS ; MIRS ; University of Melbourne ; University of Melbourne |
内容类型 | 期刊论文 |
源URL | [http://ir.iggcas.ac.cn/handle/132A11/86688] |
专题 | 中国科学院地质与地球物理研究所 |
通讯作者 | Tian, Yuntao |
作者单位 | 1.Univ Melbourne, Sch Earth Sci, Melbourne, Vic, Australia 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Tian, Yuntao,Kohn, Barry P.,Gleadow, Andrew J. W.,et al. A thermochronological perspective on the morphotectonic evolution of the southeastern Tibetan Plateau[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2014,119(1):676-698. |
APA | Tian, Yuntao,Kohn, Barry P.,Gleadow, Andrew J. W.,&Hu, Shengbiao.(2014).A thermochronological perspective on the morphotectonic evolution of the southeastern Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,119(1),676-698. |
MLA | Tian, Yuntao,et al."A thermochronological perspective on the morphotectonic evolution of the southeastern Tibetan Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 119.1(2014):676-698. |
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