气候变化领域集成服务门户(CCPortal): Polarity and Timing of the Deformation Along the Jinsha Suture Zone (Yushu Area, Northeastern Tibet)

CCPortal

DOI	10.1029/2023TC007888
	Polarity and Timing of the Deformation Along the Jinsha Suture Zone (Yushu Area, Northeastern Tibet)
	Goussin, Fanny; Guillot, Stephane; Ruffet, Gilles; Poujol, Marc; Oliot, Emilien; Replumaz, Anne; Cordier, Carole; Dupont-Nivet, Guillaume; Roperch, Pierrick
发表日期	2023
ISSN	0278-7407
EISSN	1944-9194
卷号	42 期号:12
英文摘要	The Tibetan Plateau was formed by intense Cenozoic shortening (up to 1,100 km) of a composite proto-Tibet, itself the product of a long Paleozoic and Mesozoic history of accretion of Gondwana-derived continental fragments and volcanic arcs against the Asian continental margin. The difficult access and the scarcity of outcrops have long limited the possibilities of studying these Mesozoic suture zones in the heart of the Plateau. In this work, we present new U-Pb and 40Ar/39Ar ages from the highly deformed units of the Yushu melange, along the Jinsha Suture in the northeastern Qiangtang terrane. Early Triassic (c. 253 Ma) to Middle Jurassic ages (c. 165 Ma) complement the existing data set and help to refine the chronology of the Paleo-Tethyan oceanic subductions which have structured the northeastern part of the Qiangtang terrane. The Yushu melange records at least three successive tectono-magmatic events. The opening of a back-arc basin during the northward Paleo-Tethyan subduction along the Longmu Co-Shuanghu Suture during Early to Middle Triassic; then its closure during the southward subduction of the Songpan-Ganze Ocean along the Jinsha Suture in Late Triassic. Finally, a shortening phase related to the continental collision of the Songpan-Ganze and Qiangtang blocks from Late Triassic to Early-Middle Jurassic. No evidence for any high- or mid-temperature Cenozoic reactivation of the Jinsha suture in our study area is recorded.
关键词	Tibet Jinsha Suture tectonics Ar-Ar U-Pb Mesozoic
英文关键词	CANYON SANIDINE STANDARD; K-40 DECAY CONSTANTS; ARC VOLCANIC-ROCKS; PALEO-TETHYS OCEAN; U-PB; TECTONIC EVOLUTION; SONGPAN-GANZI; JOINT DETERMINATION; OPHIOLITIC MELANGE; NORTHERN QIANGTANG
WOS研究方向	Geochemistry & Geophysics
WOS记录号	WOS:001114923600001
来源期刊	TECTONICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282747
作者单位	Communaute Universite Grenoble Alpes; Universite Grenoble Alpes (UGA); Centre National de la Recherche Scientifique (CNRS); Institut de Recherche pour le Developpement (IRD); Universite Gustave-Eiffel; Universite Savoie Mont Blanc; Universite de Rennes; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU); Universite de Montpellier; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU); University of Potsdam
推荐引用方式 GB/T 7714	Goussin, Fanny,Guillot, Stephane,Ruffet, Gilles,et al. Polarity and Timing of the Deformation Along the Jinsha Suture Zone (Yushu Area, Northeastern Tibet)[J],2023,42(12).
APA	Goussin, Fanny.,Guillot, Stephane.,Ruffet, Gilles.,Poujol, Marc.,Oliot, Emilien.,...&Roperch, Pierrick.(2023).Polarity and Timing of the Deformation Along the Jinsha Suture Zone (Yushu Area, Northeastern Tibet).TECTONICS,42(12).
MLA	Goussin, Fanny,et al."Polarity and Timing of the Deformation Along the Jinsha Suture Zone (Yushu Area, Northeastern Tibet)".TECTONICS 42.12(2023).