End-Permian mass extinction and palaeoenvironmental changes in Neotethys: Evidence from an oceanic carbonate section in southwestern Tibet
Shen, Shu-zhong (沈树忠)1; Cao, Chang-qun (曹长群)1; Zhang, Yi-chun (张以春)1; Li, Wen-zhong1; Shi, G. R.2; Wang, Yue (王玥)1; Wu, Ya-sheng3; Ueno, K.4; Henderson, C. M.5; Wang, Xiang-dong (王向东)1
2010-08-01
发表期刊GLOBAL AND PLANETARY CHANGE
ISSN0921-8181
卷号73期号:1-2页码:3-14
摘要

This paper documents a new Permian-Triassic carbonate sequence which recorded the end-Permian mass extinction in the isolated oceanic setting of Neotethys in southwestern Tibet, China. The sequence is over 350 m thick and consists of the Gyanyima and the Lower Lanchengquxia formations in. ascending order. The Lopingian (Late Permian) Gyanyima Formation is composed of fossiliferous reddish carbonates dominated by Colaniella grainstone and reef facies including fenestrate/sponge/coral framestone and bafflestone. 156 species are recognized from the Lopingian Gyanyima Formation. Composite ranges of brachiopods, ostracods, rugose corals and foraminifers at the Gyanyima Section suggest that evolution and diversification of Permian marine organisms continued to the end-Permian preceding a major faunal extinction close to the Permian-Triassic boundary (PTB), coincident with a 2-3 parts per thousand negative shift of delta C-13(carb). The timing and accelerating extinction pattern and the negative delta C-13(carb) excursion are largely comparable with those reported from many previously-documented sections on continental shelf environments. Based on a detailed lithofacies analysis, the latest Permian reefal facies is sharply replaced by ostracod/crinoid packstone/grainstone with abrupt abundant occurrences of Early Triassic conodonts at the Gyanyima Section. This is then followed by thrombolitic microbialite, stromatolite, packstone containing abundant spherical microbes, and bivalve/ammonoid packstone of tidal and intertidal facies. This distinct lithofacies and biofacies shift would, therefore, suggest a dramatic faunal community and environmental change across the PTB. Distinct palaeoclimate fluctuations through the P-T interval are also indicated by the alternation of warm- and cool-water faunas through the upperraost part of the succession. The lower part of the Gyanyima Formation is characterized by a warm condition as indicated by Cathaysian-dominated fossils. This was then followed by a mild cooling event as suggested by the occurrence of many distinct peri-Gondwanan elements and absence of compound corals. The latest Changhsingian is characterized exclusively by warm-water faunal elements of Cathaysian affinities, together with the negative shift of delta C-13(carb), suggesting a rapid warming event at the very end of Permian in association with much more widespread volcanic activities than we thought before. (C) 2010 Elsevier B.V. All rights reserved.

关键词Permian-triassic Oceanic Carbonate Neotethys End-permian Mass Extinction Gyanyima
DOI10.1016/j.gloplacha.2010.03.007
语种英语
关键词[WOS]Selong Xishan Section ; Triassic Boundary Beds ; Southern Tibet ; Xizang Tibet ; Brachiopod Fauna ; China ; Isotope ; Stratigraphy ; Event ; Recovery
资助项目CAS[KZCX2-YW-Q08-4] ; Creative Research Teams, MST[2006FY120300] ; National Basic Research program[2006CB806400] ; NSFC ; Australian Research Council (ARC)[DP0772161] ; NSERC
WOS研究方向Physical Geography ; Geology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号WOS:000283814900002
项目资助者CAS ; Creative Research Teams, MST ; National Basic Research program ; NSFC ; Australian Research Council (ARC) ; NSERC
出版者ELSEVIER SCIENCE BV
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/353
专题中国科学院南京地质古生物研究所
其他
通讯作者Shen, Shu-zhong (沈树忠)
作者单位1.Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
2.Deakin Univ, Sch Life & Environm Sci, Burwood, Vic 3125, Australia
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
4.Fukuoka Univ, Fac Sci, Dept Earth Syst Sci, Fukuoka 8140180, Japan
5.Univ Calgary, Dept Geosci, Calgary, AB T2N 1N4, Canada
第一作者单位中国科学院南京地质古生物研究所
通讯作者单位中国科学院南京地质古生物研究所
推荐引用方式
GB/T 7714
Shen, Shu-zhong ,Cao, Chang-qun ,Zhang, Yi-chun ,et al. End-Permian mass extinction and palaeoenvironmental changes in Neotethys: Evidence from an oceanic carbonate section in southwestern Tibet[J]. GLOBAL AND PLANETARY CHANGE,2010,73(1-2):3-14.
APA Shen, Shu-zhong .,Cao, Chang-qun .,Zhang, Yi-chun .,Li, Wen-zhong.,Shi, G. R..,...&Chen, Jun .(2010).End-Permian mass extinction and palaeoenvironmental changes in Neotethys: Evidence from an oceanic carbonate section in southwestern Tibet.GLOBAL AND PLANETARY CHANGE,73(1-2),3-14.
MLA Shen, Shu-zhong ,et al."End-Permian mass extinction and palaeoenvironmental changes in Neotethys: Evidence from an oceanic carbonate section in southwestern Tibet".GLOBAL AND PLANETARY CHANGE 73.1-2(2010):3-14.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
45.pdf(2403KB)期刊论文出版稿开放获取CC BY-NC-SA请求全文
个性服务
查看访问统计
谷歌学术
谷歌学术中相似的文章
[Shen, Shu-zhong (沈树忠)]的文章
[Cao, Chang-qun (曹长群)]的文章
[Zhang, Yi-chun (张以春)]的文章
百度学术
百度学术中相似的文章
[Shen, Shu-zhong (沈树忠)]的文章
[Cao, Chang-qun (曹长群)]的文章
[Zhang, Yi-chun (张以春)]的文章
必应学术
必应学术中相似的文章
[Shen, Shu-zhong (沈树忠)]的文章
[Cao, Chang-qun (曹长群)]的文章
[Zhang, Yi-chun (张以春)]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。