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Palaeoenvironmental reconstruction and biostratinomic analysis of the Jurassic Yanliao Lagerstatte in northeastern China
Yang, Zixiao1; Wang, Shengyu1; Tian, Qingyi1; Wang, Bo (王博)2; Hethke, Manja3; McNamara, Maria E.4; Benton, Michael J.5; Xu, Xing6; Jiang, Baoyu1
2019-01-15
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume514Pages:739-753
Abstract

The Middle-Upper Jurassic Yanliao Lagerstatte contains numerous exceptionally preserved fossils of aquatic and land organisms, including insects, salamanders, dinosaurs, pterosaurs and mammaliaforms. Despite extensive study of the diversity and evolutionary implications of the biota, the palaeoenvironmental setting and taphonomy of the fossils remain poorly understood. We reconstruct both the palaeoenvironment of the Daohugou area (one of the most famous Yanliao fossil areas), and the biostratinomy of the fossils. We use high-resolution stratigraphic data from field investigation and excavations to document in detail the stratigraphic succession, lithofacies, facies associations, and biostratinomic features of the Lagerstatte. Our results show that frequent volcanic eruptions generated an extensive volcaniclastic apron and lake(s) in the studied area. The frequent alternation of thin lacustrine deposits and thick volcaniclastic apron deposits indicates either that the studied area was located in the marginal regions of a single lake, where the frequent influx of volcaniclastic apron material caused substantial fluctuations in lake area and thus the frequent lateral alternation of the two facies, or that many short-lived lakes developed on the volcaniclastic apron. Most terrestrial insects were preserved in the laminated, normally graded siltstone, claystone and tuff facies that form many thin intervals with deposits of graded sandstone, siltstone and tuff in between. Within each interval the terrestrial insects occur in many laminae associated with abundant aquatic organisms, but are particularly abundant in some laminae that directly underlie tuff of fallout origin. Most of these terrestrial insects are interpreted to have been killed in the area adjacent to the studied palaeolake(s) during volcanic eruptions. Their carcasses were transported by influxes of fresh volcaniclastic material, primarily meteoric runoff and possibly minor distal pyroclastic flow into the palaeolake(s), and were buried in palaeolake deposits prior to extended decay probably due to a combination of rapid vertical settling, ash fall and water turbulence.

KeywordPalaeolake Volcanism Taphonomy Ecosystem Middle-late Jurassic Yanliao Biota
DOI10.1016/j.palaeo.2018.09.030
Language英语
WOS KeywordChallis Volcanic Field ; Northern China ; Sedimentation Processes ; Pyroclastic Flows ; Inner-mongolia ; Alluvial-fan ; Crater-lake ; Daohugou ; Sedimentology ; Evolution
Funding ProjectNational Natural Science Foundation of China, China[41672010] ; National Natural Science Foundation of China, China[41688103] ; National Natural Science Foundation of China, China[41572010] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences, China[XDB26000000] ; European Research Council, European-Union Starting Grant[H2020-2014-ERC-StG-637698-ANICOLEVO]
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000456355800054
Funding OrganizationNational Natural Science Foundation of China, China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences, China ; European Research Council, European-Union Starting Grant
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/16081
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorJiang, Baoyu
Affiliation1.Nanjing Univ, Sch Earth Sci & Engn, Ctr Res & Educ Biol Evolut & Environm, Nanjing 210023, Jiangsu, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
3.Free Univ Berlin, Fachbereich Geowissensch, Inst Geol Wissensch, Malteserstr 74-100, D-12249 Berlin, Germany
4.Univ Coll Cork, Sch Biol Earth & Environm Sci, Distillery Fields, Cork T23 TK30, Ireland
5.Univ Bristol, Sch Earth Sci, Bristol BS8 1RJ, Avon, England
6.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China
Recommended Citation
GB/T 7714
Yang, Zixiao,Wang, Shengyu,Tian, Qingyi,et al. Palaeoenvironmental reconstruction and biostratinomic analysis of the Jurassic Yanliao Lagerstatte in northeastern China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,514:739-753.
APA Yang, Zixiao.,Wang, Shengyu.,Tian, Qingyi.,Wang, Bo .,Hethke, Manja.,...&Jiang, Baoyu.(2019).Palaeoenvironmental reconstruction and biostratinomic analysis of the Jurassic Yanliao Lagerstatte in northeastern China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,514,739-753.
MLA Yang, Zixiao,et al."Palaeoenvironmental reconstruction and biostratinomic analysis of the Jurassic Yanliao Lagerstatte in northeastern China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 514(2019):739-753.
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