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Article: Facies analysis and sea-level change at the Guadalupian Lopingian global stratotype (Laibin, South China), and its bearing on the end-Guadalupian mass extinction

TitleFacies analysis and sea-level change at the Guadalupian Lopingian global stratotype (Laibin, South China), and its bearing on the end-Guadalupian mass extinction
Authors
Issue Date2009
PublisherGeological Society Publishing House. The Journal's web site is located at http://www.geolsoc.org.uk/gsl/publications/journals/jgs
Citation
Journal Of The Geological Society, 2009, v. 166 n. 4, p. 655-666 How to Cite?
AbstractThe Guadalupian-Lopingian boundary stratotype at Penglaitan, and the nearby Tieqiao section, near Laibin, South China, record a series of major environmental changes within the Jiangnan Basin during a Mid-Permian biotic crisis. The sequence-stratigraphic, petrographic and palaeontological record of these sections has been studied and the associated strontium isotopic fluctuations have been assayed. Mass extinction of fusulinid foraminifers is most clearly associated in time with onset of volcanism and a relative sea-level fall that led to the establishment of mid-ramp conditions (Laibin Limestone) in settings that were previously dominated by radiolarian mudstones. The regression also coincides with a low point of 87Sr/ 86Sr ratios. The lowstand deposits contain mafic scoriaceous grains that record pyroclastic volcanism probably centred in the Emeishan flood basalt province 800 km to the west of Laibin. Thus, unusually violent eruptions associated with flood basalts in this province may have contributed to the environmental stresses responsible for the extinction event. Subsequent environmental changes included transgression, spread of dysoxic waters, indicated by populations of small pyrite framboids, and a major negative C-isotope excursion. All these phenomena have been previously related to the end-Guadalupian extinction but they in fact post-date the crisis because a post-extinction fauna of foraminifers is encountered at this time. © 2009 Geological Society of London.
Persistent Identifierhttp://hdl.handle.net/10722/151289
ISSN
2015 Impact Factor: 2.473
2015 SCImago Journal Rankings: 1.449
ISI Accession Number ID
Funding AgencyGrant Number
PW's Natural Environment Research CouncilNE/D011558/1
Ministry of Education of ChinaB08030
State Administration of Foreign Expert Affairs, China
J.R.AHK RGC HKU700204
Funding Information:

This project was funded by PW's Natural Environment Research Council grant NE/D011558/1 and '111' project grant B08030 of the Ministry of Education of China and the State Administration of Foreign Expert Affairs, China, and J.R.A.'s grant HK RGC HKU700204.

References

 

DC FieldValueLanguage
dc.contributor.authorWignall, PBen_US
dc.contributor.authorVédrine, Sen_US
dc.contributor.authorBond, DPGen_US
dc.contributor.authorWang, Wen_US
dc.contributor.authorLai, XLen_US
dc.contributor.authorAli, JRen_US
dc.contributor.authorJiang, HSen_US
dc.date.accessioned2012-06-26T06:20:09Z-
dc.date.available2012-06-26T06:20:09Z-
dc.date.issued2009en_US
dc.identifier.citationJournal Of The Geological Society, 2009, v. 166 n. 4, p. 655-666en_US
dc.identifier.issn0016-7649en_US
dc.identifier.urihttp://hdl.handle.net/10722/151289-
dc.description.abstractThe Guadalupian-Lopingian boundary stratotype at Penglaitan, and the nearby Tieqiao section, near Laibin, South China, record a series of major environmental changes within the Jiangnan Basin during a Mid-Permian biotic crisis. The sequence-stratigraphic, petrographic and palaeontological record of these sections has been studied and the associated strontium isotopic fluctuations have been assayed. Mass extinction of fusulinid foraminifers is most clearly associated in time with onset of volcanism and a relative sea-level fall that led to the establishment of mid-ramp conditions (Laibin Limestone) in settings that were previously dominated by radiolarian mudstones. The regression also coincides with a low point of 87Sr/ 86Sr ratios. The lowstand deposits contain mafic scoriaceous grains that record pyroclastic volcanism probably centred in the Emeishan flood basalt province 800 km to the west of Laibin. Thus, unusually violent eruptions associated with flood basalts in this province may have contributed to the environmental stresses responsible for the extinction event. Subsequent environmental changes included transgression, spread of dysoxic waters, indicated by populations of small pyrite framboids, and a major negative C-isotope excursion. All these phenomena have been previously related to the end-Guadalupian extinction but they in fact post-date the crisis because a post-extinction fauna of foraminifers is encountered at this time. © 2009 Geological Society of London.en_US
dc.languageengen_US
dc.publisherGeological Society Publishing House. The Journal's web site is located at http://www.geolsoc.org.uk/gsl/publications/journals/jgsen_US
dc.relation.ispartofJournal of the Geological Societyen_US
dc.titleFacies analysis and sea-level change at the Guadalupian Lopingian global stratotype (Laibin, South China), and its bearing on the end-Guadalupian mass extinctionen_US
dc.typeArticleen_US
dc.identifier.emailAli, JR:jrali@hku.hken_US
dc.identifier.authorityAli, JR=rp00659en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1144/0016-76492008-118en_US
dc.identifier.scopuseid_2-s2.0-69949170181en_US
dc.identifier.hkuros165912-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-69949170181&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume166en_US
dc.identifier.issue4en_US
dc.identifier.spage655en_US
dc.identifier.epage666en_US
dc.identifier.isiWOS:000267814700006-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridWignall, PB=7003732484en_US
dc.identifier.scopusauthoridVédrine, S=22959077700en_US
dc.identifier.scopusauthoridBond, DPG=7102527872en_US
dc.identifier.scopusauthoridWang, W=36071339100en_US
dc.identifier.scopusauthoridLai, XL=15052076900en_US
dc.identifier.scopusauthoridAli, JR=7102266465en_US
dc.identifier.scopusauthoridJiang, HS=14043655000en_US

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