气候变化领域集成服务门户(CCPortal): Norian conodonts of the South Qiangtang Terrane, North Tibet, and their palaeogeographic implications

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DOI	10.1016/j.palaeo.2023.111402
	Norian conodonts of the South Qiangtang Terrane, North Tibet, and their palaeogeographic implications
	Wu, Gui-chun; Ji, Zhan-sheng; Lash, Gary G.; Yao, Jian-xin
发表日期	2023
ISSN	0031-0182
EISSN	1872-616X
卷号	613
英文摘要	Prior to their extinction at the Triassic-Jurassic boundary, conodonts were relatively diverse and abundant during Norian time. The great faunal turnovers at the base of the Norian and the base of the Alaunian (Middle Norian) confirm that the end-Triassic mass extinction was protracted through Late Triassic time rather than a single event. Norian conodonts also display obvious geographic distribution. Thus, investigation of Norian conodonts is not only of biostratigraphic significance, but it will elucidate the end Triassic mass extinction event as well as Late Triassic palaeobiogeography. Lacian (Early Norian) and Alaunian faunas appear to have spread extensively through Tibetan terranes of the Eastern Tethys, yet evidence of a continuous Lacian to Alaunian conodont succession as well as faunal turnover at the base of the Alaunian is sparse. Our biostratigraphic investigation of carbonate deposits of the Mopanshan area of the South Qiangtang Terrane has yielded abundant Norian conodonts. The Lacian Ancyrogondolella uniformis-Norigondolella hallstattensis Fauna and the Alaunian Mockina postera-Norigondolella steinbergensis Fauna are well-represented in the study region. The Norian conodont succession of the Eastern Tethys may be correlative with that of the Western Tethys and Eastern Pacific. The obvious geographic distribution provides evidence that the Indus-YarluZangbo Suture Zone (IYZSZ) separated Eastern Tethys into northern Tethys and southern Tethys realms. Norian conodonts are less abundant and diverse in the southern Tethys realm relative to the northern (or peri-Gondwana) Tethys. The Himalaya Terrane in the south belonged to southern Tethys whereas the Lhasa and the South Qiangtang terranes were part of the northern Tethys. Moreover, the absence of Norigondolella steinbergensis from the southern Tethys seemed to differentiate this realm from the northern Tethys.
关键词	Mopanshan area South Qiangtang Eastern Tethys Norian Conodont extinction Palaeobiogeography
英文关键词	TRIASSIC CONODONTS; RECORD; EVOLUTION; TAXONOMY
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:001058586200001
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283418
作者单位	China Geological Survey; Institute of Geology, Chinese Academy of Geological Sciences; Ministry of Natural Resources of the People's Republic of China; Chinese Academy of Geological Sciences; China Geological Survey; Chinese Academy of Geological Sciences; State University of New York (SUNY) System; SUNY Fredonia
推荐引用方式 GB/T 7714	Wu, Gui-chun,Ji, Zhan-sheng,Lash, Gary G.,et al. Norian conodonts of the South Qiangtang Terrane, North Tibet, and their palaeogeographic implications[J],2023,613.
APA	Wu, Gui-chun,Ji, Zhan-sheng,Lash, Gary G.,&Yao, Jian-xin.(2023).Norian conodonts of the South Qiangtang Terrane, North Tibet, and their palaeogeographic implications.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,613.
MLA	Wu, Gui-chun,et al."Norian conodonts of the South Qiangtang Terrane, North Tibet, and their palaeogeographic implications".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 613(2023).