Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/4532
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dc.contributor.authorGlen, J M Gen
dc.contributor.authorNomade, Sen
dc.contributor.authorLyons, J Jen
dc.contributor.authorMetcalfe, Ianen
dc.contributor.authorMundil, Ren
dc.contributor.authorRenne, P Ren
dc.date.accessioned2010-02-08T14:45:00Z
dc.date.issued2009en
dc.identifier.citationJournal of Asian Earth Sciences, 36(6), p. 521-540en
dc.identifier.issn1367-9120en
dc.identifier.urihttps://hdl.handle.net/1959.11/4532en
dc.description.abstractWe have studied three Permian–Triassic (PT) localities from China as part of a combined magnetostratigraphic, ⁴⁰Ar/³⁹Ar and U-Pb radioisotopic, and biostratigraphic study aimed at resolving the temporal relations between terrestrial and marine records across the Permo-Triassic boundary, as well as the rate of the biotic recovery in the Early Triassic. The studied sections from Shangsi (Sichuan Province), Langdai (Guihzou Province), and the Junggar basin (Xinjiang Province), span marine, paralic, and terrestrial PT environments, respectively. Each of these sections was logged in detail in order to place geochronologic, paleomagnetic, geochemical, conodont and palynologic samples within a common stratigraphic context. Here we present rock-magnetic, paleomagnetic and magnetostratigraphic results from the three localities. At Shangsi, northern Sichuan Province, we sampled three sections spanning Permo-Triassic marine carbonates. Magnetostratigraphic results from the three sections indicate that the composite section contains at least 8 polarity chrons and that the PT boundary occurs within a normal polarity chron a short distance above the mass extinction level and a reversed-to-normal (R-N) polarity reversal. Furthermore, the onset of the Illawarra mixed interval lies below the sampled section indicating that the uppermost Permian Changhsingian and at least part of the Wuchiapingian stages postdate the end of the Kiaman Permo-Carboniferous Reversed Superchron. At Langdai, Guizhou Province, we studied magnetostratigraphy of PT paralic mudstone and carbonate sediments in two sections. The composite section spans an R-N polarity sequence. Section-mean directions pass a fold test at the 95% confidence level, and the section-mean poles are close to the mean PT pole for the South China block. Based on biostratigraphic constraints, the R-N transition recorded at Langdai is consistent with that at Shangsi and demonstrates that the PT boundary occurred within a normal polarity chron a short distance above the mass extinction level. In the southern Junggar basin, Xinjiang Province, in northwest China, we determined the magnetostratigraphy of three sections of a terrestrial sequence. Normal and reversed polarity directions are roughly antipodal, and magnetostratigraphies from the three sections are highly consistent. Combined bio- and magneto-stratigraphy used to correlate this sequence to other PT sequences suggests that the previously- proposed biostratigraphic PT boundary in the Junggar sections was most likely misplaced by earlier workers suggesting that further work is necessary to confidently place the PT boundary there.en
dc.languageenen
dc.publisherElsevier Science Ltden
dc.relation.ispartofJournal of Asian Earth Sciencesen
dc.titleMagnetostratigraphic correlations of Permian-Triassic marine-to-terrestrial sections from Chinaen
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.jseaes.2009.03.003en
dc.subject.keywordsMagnetism and Palaeomagnetismen
dc.subject.keywordsStratigraphy (incl Biostratigraphy and Sequence Stratigraphy)en
local.contributor.firstnameJ M Gen
local.contributor.firstnameSen
local.contributor.firstnameJ Jen
local.contributor.firstnameIanen
local.contributor.firstnameRen
local.contributor.firstnameP Ren
local.subject.for2008040311 Stratigraphy (incl Biostratigraphy and Sequence Stratigraphy)en
local.subject.for2008040406 Magnetism and Palaeomagnetismen
local.subject.seo2008850103 Oil and Gas Explorationen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailjglen@usgs.goven
local.profile.emailimetcal2@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20091019-143344en
local.publisher.placeEngland, United Kingdomen
local.format.startpage521en
local.format.endpage540en
local.peerreviewedYesen
local.identifier.volume36en
local.identifier.issue6en
local.contributor.lastnameGlenen
local.contributor.lastnameNomadeen
local.contributor.lastnameLyonsen
local.contributor.lastnameMetcalfeen
local.contributor.lastnameMundilen
local.contributor.lastnameRenneen
dc.identifier.staffune-id:imetcal2en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:4641en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleMagnetostratigraphic correlations of Permian-Triassic marine-to-terrestrial sections from Chinaen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 519<br />Views: 520<br />Downloads: 0en
local.search.authorGlen, J M Gen
local.search.authorNomade, Sen
local.search.authorLyons, J Jen
local.search.authorMetcalfe, Ianen
local.search.authorMundil, Ren
local.search.authorRenne, P Ren
local.uneassociationUnknownen
local.year.published2009en
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