NIGPAS OpenIR
Late Triassic ecosystem variations inferred by palynological records from Hechuan, southern Sichuan Basin, China
Li, Liqin (李丽琴)1; Wang, Yongdong (王永栋)1; Vajda, Vivi2; Liu, Zhaosheng1
2018-11-01
发表期刊GEOLOGICAL MAGAZINE
ISSN0016-7568
卷号155期号:8页码:1793-1810
摘要

The Late Triassic deposits of the Sichuan Basin, southwestern China are significant for hosting abundant and diverse fossil assemblages including plants (containing spores and pollen), bivalves and insects. However, the Late Triassic palaeoecological variations are still poorly documented in this region. Here we present results from a palynological study from the Upper Triassic Xujiahe Formation in Hechuan of Chongqing, southern Sichuan Basin. The palynological analysis revealed a well-preserved terrestrial palynoflora of high diversity, comprising 184 species in 75 genera of spores and pollen. Three palynological assemblages were recognized, reflecting terrestrial successions throughout the entire interval with significant changes in the vegetation. Cycads/bennettites/ginkgophytes and conifers show an increasing trend into younger deposits, while ferns and lycopsids decrease in relative abundance. The Late Triassic vegetation underwent changes from lowland fern forest to a mixed forest with more canopy trees. We applied the Spore-pollen Morphological Group (SMG) method and Sporomorph EcoGroup (SEG) model to interpret the palaeoclimate features. The results reveal that the lower part of the Xujiahe Formation was deposited under relatively warm and humid conditions with an overall cooling and drying trend from latest Norian to Rhaetian time, accompanied by a general decrease of ferns and simultaneous increase of gymnosperms, and a decline in diversity of miospores. This study presents data on variations within the terrestrial ecosystem prior to the end-Triassic extinction event in the Sichuan Basin, and therefore provides important information for understanding the changes in the vegetation preceding the end-Triassic event.

关键词End-triassic Event Palynology Mass Extinction Sporomorph Ecogroup Climate Change
DOI10.1017/S0016756817000735
语种英语
关键词[WOS]Atlantic Magmatic Province ; In-situ Spores ; Large Igneous Provinces ; Jurassic Boundary ; Mass Extinction ; Triassic/jurassic Boundary ; East Greenland ; Ocean Acidification ; Fertile Organs ; Northwestern China
资助项目Chinese Academy of Sciences[XDB18000000] ; Chinese Academy of Sciences[XDPB0506] ; National Natural Sciences Foundation of China[NSFC 41572014] ; National Natural Sciences Foundation of China[41688103] ; State Key Program of Research and Development of Ministry of Science and Technology, China[2016YFC0600406] ; State Key Laboratory of Palaeobiology and Stratigraphy[20172103] ; Swedish Research Council[VR 2015-04264] ; Lund University Carbon Cycle Centre (LUCCI) ; Unesco/IUGS[632]
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000445338400010
项目资助者Chinese Academy of Sciences ; National Natural Sciences Foundation of China ; State Key Program of Research and Development of Ministry of Science and Technology, China ; State Key Laboratory of Palaeobiology and Stratigraphy ; Swedish Research Council ; Lund University Carbon Cycle Centre (LUCCI) ; Unesco/IUGS
出版者CAMBRIDGE UNIV PRESS
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/16904
专题中国科学院南京地质古生物研究所
通讯作者Wang, Yongdong (王永栋)
作者单位1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
2.Swedish Museum Nat Hist, Frescativagen 40, S-11418 Stockholm, Sweden
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
Li, Liqin ,Wang, Yongdong ,Vajda, Vivi,et al. Late Triassic ecosystem variations inferred by palynological records from Hechuan, southern Sichuan Basin, China[J]. GEOLOGICAL MAGAZINE,2018,155(8):1793-1810.
APA Li, Liqin ,Wang, Yongdong ,Vajda, Vivi,&Liu, Zhaosheng.(2018).Late Triassic ecosystem variations inferred by palynological records from Hechuan, southern Sichuan Basin, China.GEOLOGICAL MAGAZINE,155(8),1793-1810.
MLA Li, Liqin ,et al."Late Triassic ecosystem variations inferred by palynological records from Hechuan, southern Sichuan Basin, China".GEOLOGICAL MAGAZINE 155.8(2018):1793-1810.
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
Late Triassic ecosys(1936KB)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
[Li, Liqin (李丽琴)]的文章
[Wang, Yongdong (王永栋)]的文章
[Vajda, Vivi]的文章
百度学术
百度学术中相似的文章
[Li, Liqin (李丽琴)]的文章
[Wang, Yongdong (王永栋)]的文章
[Vajda, Vivi]的文章
必应学术
必应学术中相似的文章
[Li, Liqin (李丽琴)]的文章
[Wang, Yongdong (王永栋)]的文章
[Vajda, Vivi]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。