中国科学院机构知识库网格系统: <p>Calibrating the temporal and spatial dynamics of the Ediacaran

Calibrating the temporal and spatial dynamics of the Ediacaran - Cambrian radiation of animals

文献类型：期刊论文


作者	Bowyer, Fred T.7,8; Zhuravlev, Andrey Yu 6; Wood, Rachel 7; Shields, Graham A.5; Zhou, Ying 5; Curtis, Andrew 7; Poulton, Simon W.8; Condon, Daniel J.4; Yang, Chuan 4; Zhu, Maoyan1,2,3
刊名	EARTH-SCIENCE REVIEWS
出版日期	2022-02-01
卷号	225 页码:24
关键词	Ediacaran Cambrian Evolution Chronostratigraphy Biostratigraphy Chemostratigraphy Carbon isotopes Strontium isotopes Temporal calibration Geochronology
ISSN号	0012-8252
DOI	10.1016/j.earscirev.2021.103913
通讯作者	Bowyer, Fred T.(fred.bowyer@ed.ac.uk)
英文摘要	The Ediacaran-Cambrian transition, which incorporates the radiation of animals, lacks a robust global temporal and spatial framework, resulting in major uncertainty in the evolutionary dynamics of this critical radiation and its relationship to changes in palaeoenvironmental geochemistry. We first present a new delta C-13(carb) composite reference curve for the Ediacaran Nama Group of southern Namibia, and we then outline four new possible global age models (A to D) for the interval 551-517 million years ago (Ma). These models comprise composite carbonate-carbon isotope (delta C-13(carb)) curves, which are anchored to radiometric ages and consistent with stron-tium isotope chemostratigraphy, and are used to calibrate metazoan distribution in space and time. These models differ most prominently in the temporal position of the basal Cambrian negative delta(13)C(carb & nbsp;)excursion (BACE). Regions that host the most complete records show that the BACE nadir always predates the Ediacaran-Cambrian boundary as defined by the first appearance datum (FAD) of the ichnospecies Treptichnus pedum. Whilst trep-tichnid traces are present in the late Ediacaran fossil record, the FAD of the ichnospecies T. pedum appears to post-date the last appearance datums (LADs) of in situ representatives of the skeletal organisms Cloudina and Namacalathus in all environments with high-resolution delta C-13(carb & nbsp;) data. Two age models (A and B) place the BACE within the Ediacaran, and yield an age of ~538.8 Ma for the Ediacaran-Cambrian boundary; however models C and D appear to be the most parsimonious and may support a recalibration of the boundary age by up to 3 Myr younger. All age models reveal a previously underappreciated degree of variability in the terminal Ediacaran, incorporating notable positive and negative excursions that precede the BACE. Nothwithstanding remaining uncertainties in chemostratigraphic correlation, all models support a pre-BACE first appearance of Cambrian-type shelly fossils in Siberia and possibly South China, and show that the Ediacaran-Cambrian transition was a protracted interval represented by a series of successive radiations.
WOS关键词	YANGTZE GORGES AREA ; SOUTH CHINA ; CARBON-ISOTOPE ; GEOCHRONOLOGICAL CONSTRAINTS ; FOSSIL ASSEMBLAGES ; GLOBAL CORRELATION ; INTEGRATED CARBON ; LANTIAN FORMATION ; OLENEK UPLIFT ; CHEMOSTRATIGRAPHY
资助项目	NERC-NSFC Biosphere Evolution Transitions and Resilience (BETR) programme[NE/P013643/1] ; NERC-NSFC Biosphere Evolution Transitions and Resilience (BETR) programme[NSFC/41661134048] ; Chinese Academy of Sciences[XDB18000000] ; Chinese Academy of Sciences[XDB 26000000] ; NERC[NE/R010129/1] ; NERC[NE/T008458/1] ; NERC[121031600198-2] ; Royal Society Wolfson Research Merit Award ; State Order of the Government of the Russian Federation[04-1-21]
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000786957000002
出版者	ELSEVIER
资助机构	NERC-NSFC Biosphere Evolution Transitions and Resilience (BETR) programme ; Chinese Academy of Sciences ; NERC ; Royal Society Wolfson Research Merit Award ; State Order of the Government of the Russian Federation
源URL	[http://ir.nigpas.ac.cn/handle/332004/40737]
专题	中国科学院南京地质古生物研究所
通讯作者	Bowyer, Fred T.
作者单位	1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 10049, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Palaeoenvironm, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 4.British Geol Survey, Keyworth NG12 5GG, Notts, England 5.UCL, Dept Earth Sci, Gower St, London WC1E 6BT, England 6.Lomonosov Moscow State Univ, Fac Biol, Dept Biol Evolut, Leninskie Gory 1 12, Moscow 119234, Russia 7.Univ Edinburgh, Sch GeoSci, James Hutton Rd, Edinburgh EH9 3FE, Midlothian, Scotland 8.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England
推荐引用方式 GB/T 7714	Bowyer, Fred T.,Zhuravlev, Andrey Yu,Wood, Rachel,et al. Calibrating the temporal and spatial dynamics of the Ediacaran - Cambrian radiation of animals [J]. EARTH-SCIENCE REVIEWS,2022,225:24.
APA	Bowyer, Fred T..,Zhuravlev, Andrey Yu.,Wood, Rachel.,Shields, Graham A..,Zhou, Ying.,...&Zhu, Maoyan.(2022). Calibrating the temporal and spatial dynamics of the Ediacaran - Cambrian radiation of animals .EARTH-SCIENCE REVIEWS,225,24.
MLA	Bowyer, Fred T.,et al." Calibrating the temporal and spatial dynamics of the Ediacaran - Cambrian radiation of animals ".EARTH-SCIENCE REVIEWS 225(2022):24.

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来源：南京地质古生物研究所

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Calibrating the temporal and spatial dynamics of the Ediacaran - Cambrian radiation of animals

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