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DOI	10.1016/j.epsl.2015.12.027
	Late Triassic paleogeographic reconstruction along the Neo-Tethyan Ocean margins, southern Tibet
	Cai, Fulong; Ding, Lin; Laskowski, Andrew K.; Kapp, Paul; Wang, Houqi; Xu, Qiang; Zhang, Liyun
通讯作者	Cai, FL (通讯作者)
发表日期	2016
ISSN	0012-821X
EISSN	1385-013X
起始页码	105
结束页码	114
卷号	435
英文摘要	Sandstone petrographic and U-Pb detrital zircon analyses of Upper Triassic sedimentary rocks from the northern margin of India (Tethyan Himalaya Sequence) and southern margin of Eurasia (Lhasa terrane) provide new constraints on the Mesozoic paleogeography of Neo-Tethyan Ocean basins. The Upper Triassic Nieru Formation of the Tethyan Himalaya Sequence (THS) near Lazi city (similar to 29 degrees N, 87.5 degrees E) is dominated by Indian-affinity, Precambrian detrital zircons, which are typical of the majority of the THS. However, the Upper Triassic Langjiexue Formation of the THS exposed to the east (at 90-93 degrees E longitude) includes significant populations of Permian to Early Jurassic (291-184 Ma) detrital zircons for which there is no known Indian source. In addition, the Upper Triassic Nieru Formation near Kangma town (similar to 28.5 degrees N, 90 degrees E), located similar to 200 km to the southeast of Lazi city, yielded detrital zircon age spectra that are similar to those of Langjiexue Formation. Based on detrital zircon age spectra comparisons, we propose that both the Langjiexue and Nieru formations were derived from continental crustal fragments that were adjacent to the northwestern margin of Australia. Furthermore, we suggest that these THS units, and age-equivalent strata in Northwest Australia, West Sulawesi, Timor and West Papua, comprised a Late Triassic submarine fan along the northern Australian shelf. The Upper Triassic Mailonggang Formation in the southern Lhasa terrane (35 km northeast of Lhasa city, similar to 30 degrees N, 91.5 degrees E) is dominated by Permian detrital zircons, which were likely derived from proximal Lhasa terrane sources. The Mailonggang Formation differs from all age-equivalent strata in the Tethyan Himalaya; therefore we interpret that it was separated from Greater India by the Neo-Tethyan Ocean. (C) 2015 Elsevier B.V. All rights reserved.
关键词	SUBDUCTION-ACCRETION PROCESSES DETRITAL ZIRCON GEOCHRONOLOGY LHASA TERRANE SUTURE ZONE U-PB PROVENANCE TETHYS BASIN ARC TECTONICS
英文关键词	southern Tibet; Triassic; Greater India; paleogeography; Neo-Tethyan margins
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000369213900012
来源期刊	EARTH AND PLANETARY SCIENCE LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258641
推荐引用方式 GB/T 7714	Cai, Fulong,Ding, Lin,Laskowski, Andrew K.,et al. Late Triassic paleogeographic reconstruction along the Neo-Tethyan Ocean margins, southern Tibet[J]. 中国科学院青藏高原研究所,2016,435.
APA	Cai, Fulong.,Ding, Lin.,Laskowski, Andrew K..,Kapp, Paul.,Wang, Houqi.,...&Zhang, Liyun.(2016).Late Triassic paleogeographic reconstruction along the Neo-Tethyan Ocean margins, southern Tibet.EARTH AND PLANETARY SCIENCE LETTERS,435.
MLA	Cai, Fulong,et al."Late Triassic paleogeographic reconstruction along the Neo-Tethyan Ocean margins, southern Tibet".EARTH AND PLANETARY SCIENCE LETTERS 435(2016).