A new SIMS zircon U-Pb date from the Ediacaran Doushantuo Formation: age constraint on the Weng'an biota

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dc.contributor.authorZhou, C.en
dc.contributor.authorLi, X.-H.en
dc.contributor.authorXiao, S.en
dc.contributor.authorLan, Z.en
dc.contributor.authorOuyang, Q.en
dc.contributor.authorGuan, C.en
dc.contributor.authorChen, Z.en
dc.contributor.departmentGeosciencesen
dc.date.accessioned2018-01-28T20:23:44Zen
dc.date.available2018-01-28T20:23:44Zen
dc.date.issued2017-11-01en
dc.description.abstractAs a well-known phosphatized Lagerstätte, the Ediacaran Weng'an biota in central Guizhou Province of South China contains diverse acanthomorphic acritarchs, algal thalli, tubular microfossils as well as various spheroidal fossils. These fossils provide crucial palaeontological evidence for the radiation of multicellular eukaryotes after the termination of the Neoproterozoic global glaciation. While the Weng'an biota is generally considered as early Ediacaran in age on the basis of phosphorite Pb–Pb isochron ages ranging from 572 Ma to 599 Ma, the reliability and accuracy of these age data have been questioned and some geologists have proposed that the Weng'an biota may be younger than 580 Ma instead. Here we report a SIMS zircon U–Pb age of 609 ± 5 Ma for a tuffaceous bed immediately above the upper phosphorite unit in the Doushantuo Formation at Zhangcunping, Yichang, South China. Litho-, bio- and chemostratigraphic correlations suggest that the upper phosphorite unit at Zhangcunping can be well correlated with the upper phosphorite unit at Weng'an, which is the main horizon of the Weng'an biota. We therefore conclude that the Weng'an biota could be as old as 609 ± 5 Ma.en
dc.description.versionPublished versionen
dc.format.extent1193 - 1201 (9) page(s)en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1017/S0016756816001175en
dc.identifier.eissn1469-5081en
dc.identifier.issn0016-7568en
dc.identifier.issue6en
dc.identifier.orcidXiao, S [0000-0003-4655-2663]en
dc.identifier.urihttp://hdl.handle.net/10919/81950en
dc.identifier.volume154en
dc.languageEnglishen
dc.publisherCambridge University Pressen
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000413978800002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectGeosciences, Multidisciplinaryen
dc.subjectGeologyen
dc.subjectphosphatized Lagerstatteen
dc.subjectlithostratigraphic and biostratigraphic correlationen
dc.subjecttuffaceous beden
dc.subjectZhangcunpingen
dc.subjectSouth Chinaen
dc.subjectYANGTZE GORGES AREAen
dc.subjectSOUTH CHINAen
dc.subjectACANTHOMORPHIC ACRITARCHSen
dc.subjectMETAZOAN EVOLUTIONen
dc.subjectANIMAL FOSSILSen
dc.subjectLU-HFen
dc.subjectEUKARYOTESen
dc.subjectASSEMBLAGEen
dc.subjectRADIATIONen
dc.subjectEMBRYOSen
dc.titleA new SIMS zircon U-Pb date from the Ediacaran Doushantuo Formation: age constraint on the Weng'an biotaen
dc.title.serialGeological Magazineen
dc.typeArticle - Refereeden
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Scienceen
pubs.organisational-group/Virginia Tech/Science/COS T&R Facultyen
pubs.organisational-group/Virginia Tech/Science/Geosciencesen

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