气候变化领域集成服务门户(CCPortal): Grenvillian evolution of the Qaidam block and its position in Rodinia constrained by U-Pb-Hf composition of detrital zircons from the Altyn Tagh, Northern Tibet

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DOI	10.1016/j.gr.2023.06.003
	Grenvillian evolution of the Qaidam block and its position in Rodinia constrained by U-Pb-Hf composition of detrital zircons from the Altyn Tagh, Northern Tibet
	Hao, Jiangbo; Wang, Chao; Zhang, Shuai; Liu, Liang; Ji, Wenbin; Meert, Joseph G.; Wu, Hanning; Li, Hang; Yu, Zunpu; Sun, Xiaokui; Ma, Deqing; Gai, Yongsheng
发表日期	2023
ISSN	1342-937X
EISSN	1878-0571
起始页码	60
结束页码	73
卷号	122
英文摘要	The U-Pb ages and Hf isotopic composition of detrital zircons provide important constraints on basin evolution and paleogeography. The Qaidam block, a continental fragment along the northeastern margin of the Tibetan Plateau, has been suggested to have been either in an internal or a peripheral position in Rodinia. We present a systematic study of late Mesoproterozoic to Ediacaran sedimentary sequences from the Altyn Tagh belt, a part of the Qaidam block displaced by the Altyn Tagh fault, in an effort to establish its position within Rodinia. The (meta-)sedimentary rocks of the Altyn Complex of South Altyn can be correlated with the Taxidaban Group, the part of the basement (meta-) sedimentary sequence of Central Altyn, on the basis of lithological and geochronological similarities. Both of these were deposited in the late Mesoproterozoic to early Neoproterozoic. The early Neoproterozoic Suoerkuli Group of Central Altyn and its coeval magmatism formed in an extensional setting. This extensional episode facilitated thinning of the lithosphere during the late Tonian-Ediacaran when the sedimentary protoliths of the Hongliuquan Complex were deposited. Detrital zircon grains from late Mesoproterozoic to Ediacaran sedimentary sequences in the Altyn Tagh orogenic belt show a wide distribution of Meso- and Paleoproterozoic ages between 1800 and 1000 Ma, which match well with contemporaneous supracrustal sequences in northeastern Laurentia. In combination with the similarity in late Mesoproterozoic to Ediacaran tectono-thermal events, we propose the Qaidam block was located along the northeast Laurentian margin during the late Meso- to Neoproterozoic assembly of Rodinia.& COPY; 2023 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
英文关键词	EASTERN GHATS BELT; WESTERN-AUSTRALIA; TECTONOTHERMAL EVENTS; NORTHAMPTON COMPLEX; NEOPROTEROZOIC GRANITOIDS; NORWEGIAN CALEDONIDES; BALTOSCANDIAN MARGIN; SCANDIAN DEFORMATION; TECTONIC EVOLUTION; INDIA IMPLICATIONS
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:001024968700001
来源期刊	GONDWANA RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283571
作者单位	Northwest University Xi'an; State University System of Florida; University of Florida
推荐引用方式 GB/T 7714	Hao, Jiangbo,Wang, Chao,Zhang, Shuai,et al. Grenvillian evolution of the Qaidam block and its position in Rodinia constrained by U-Pb-Hf composition of detrital zircons from the Altyn Tagh, Northern Tibet[J],2023,122.
APA	Hao, Jiangbo.,Wang, Chao.,Zhang, Shuai.,Liu, Liang.,Ji, Wenbin.,...&Gai, Yongsheng.(2023).Grenvillian evolution of the Qaidam block and its position in Rodinia constrained by U-Pb-Hf composition of detrital zircons from the Altyn Tagh, Northern Tibet.GONDWANA RESEARCH,122.
MLA	Hao, Jiangbo,et al."Grenvillian evolution of the Qaidam block and its position in Rodinia constrained by U-Pb-Hf composition of detrital zircons from the Altyn Tagh, Northern Tibet".GONDWANA RESEARCH 122(2023).