A thermochronological perspective on the morphotectonic evolution of the southeastern Tibetan Plateau

doi:10.1002/2013JB010429

	A thermochronological perspective on the morphotectonic evolution of the southeastern Tibetan Plateau
	Tian, Yuntao 1; Kohn, Barry P.1; Gleadow, Andrew J. W.1; Hu, Shengbiao 2
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.