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Article: Dating the onset and nature of the Middle Permian Emeishan large igneous province eruptions in SW China using conodont biostratigraphy and its bearing on mantle plume uplift models

TitleDating the onset and nature of the Middle Permian Emeishan large igneous province eruptions in SW China using conodont biostratigraphy and its bearing on mantle plume uplift models
Authors
KeywordsConodont
Emeishan large igneous province
Mantle plume
Permian
Issue Date2010
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/lithos
Citation
Lithos, 2010, v. 119 n. 1-2, p. 20-33 How to Cite?
AbstractThe Middle Permian Emeishan large igneous province of SW China has provided the quintessential example of the phenomenon of kilometre-scale pre-eruption domal uplift associated with mantle plume impingement on the base of the lithosphere. One key line of evidence is an interpreted zone of truncation of the platform carbonates belonging to the Maokou Formation that underlies the volcanic pile. Here we test this interpretation by conodont age dating the uppermost beds of the Maokou Formation in sections from Yunnan, Sichuan, Guizhou and Guangxi provinces, which span locations from the inner part of the igneous province to several hundred kilometres beyond its margins. The results show that eruptions began in the Jinogondolella altudaensis Zone (~263 Ma) of the Middle Capitanian Stage and greatly increased in extent and volume in the J. xuanhanensis Zone (~262 Ma). Pre-eruption uplift was muted, and most locations within the terrain and at many locations beyond its margins witnessed platform collapse (not uplift) with deep-water facies (radiolarian cherts and submarine fans) developing in the J. altudaensis Zone. The clearest evidence for an emergence surface occurs around the margins of the province in the J. xuanhanensis Zone. This is after the initial onset of eruptions and marks either a eustatic sequence boundary or a brief pulse of tectonic uplift contemporaneous with volcanism. As with recent studies on the basal volcanic successions of the Emeishan LIP, kilometre-scale plume-related domal uplift prior to Emeishan eruptions is not supported by these data; rather a more complex interaction between plume and lithosphere with minor localized uplift and subsidence is inferred. © 2010 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/124646
ISSN
2015 Impact Factor: 3.723
2015 SCImago Journal Rankings: 2.920
ISI Accession Number ID
Funding AgencyGrant Number
National Natural Science Foundation of China40872002
40921062
Natural Environment Research Council of UKNE/D011558/1
Chinese State Administration of Foreign Experts AffairsB08030
Hong Kong Research Grant CouncilHKU700204
Funding Information:

Zhang Zhaochong, Yan Jiaxin and Li Bo helped with the field sampling. Rob Newton, Dougal Jerram and Jason Hilton are thanked for their field assistance We thank reviewers Scott Bryan and Dougal Jerram for their critical and constructive comments. This study is supported by grants from the National Natural Science Foundation of China (Grant nos. 40872002, 40921062), Natural Environment Research Council of UK (Grant NE/D011558/1), "111" Project of Chinese State Administration of Foreign Experts Affairs (Grant B08030) and Hong Kong Research Grant Council (grant no HKU700204).

References

 

DC FieldValueLanguage
dc.contributor.authorSun, Yen_HK
dc.contributor.authorLai, Xen_HK
dc.contributor.authorWignall, PBen_HK
dc.contributor.authorWiddowson, Men_HK
dc.contributor.authorAli, JRen_HK
dc.contributor.authorJiang, Hen_HK
dc.contributor.authorWang, Wen_HK
dc.contributor.authorYan, Cen_HK
dc.contributor.authorBond, DPGen_HK
dc.contributor.authorVédrine, Sen_HK
dc.date.accessioned2010-10-31T10:46:12Z-
dc.date.available2010-10-31T10:46:12Z-
dc.date.issued2010en_HK
dc.identifier.citationLithos, 2010, v. 119 n. 1-2, p. 20-33en_HK
dc.identifier.issn0024-4937en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124646-
dc.description.abstractThe Middle Permian Emeishan large igneous province of SW China has provided the quintessential example of the phenomenon of kilometre-scale pre-eruption domal uplift associated with mantle plume impingement on the base of the lithosphere. One key line of evidence is an interpreted zone of truncation of the platform carbonates belonging to the Maokou Formation that underlies the volcanic pile. Here we test this interpretation by conodont age dating the uppermost beds of the Maokou Formation in sections from Yunnan, Sichuan, Guizhou and Guangxi provinces, which span locations from the inner part of the igneous province to several hundred kilometres beyond its margins. The results show that eruptions began in the Jinogondolella altudaensis Zone (~263 Ma) of the Middle Capitanian Stage and greatly increased in extent and volume in the J. xuanhanensis Zone (~262 Ma). Pre-eruption uplift was muted, and most locations within the terrain and at many locations beyond its margins witnessed platform collapse (not uplift) with deep-water facies (radiolarian cherts and submarine fans) developing in the J. altudaensis Zone. The clearest evidence for an emergence surface occurs around the margins of the province in the J. xuanhanensis Zone. This is after the initial onset of eruptions and marks either a eustatic sequence boundary or a brief pulse of tectonic uplift contemporaneous with volcanism. As with recent studies on the basal volcanic successions of the Emeishan LIP, kilometre-scale plume-related domal uplift prior to Emeishan eruptions is not supported by these data; rather a more complex interaction between plume and lithosphere with minor localized uplift and subsidence is inferred. © 2010 Elsevier B.V.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/lithosen_HK
dc.relation.ispartofLithosen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectConodonten_HK
dc.subjectEmeishan large igneous provinceen_HK
dc.subjectMantle plumeen_HK
dc.subjectPermianen_HK
dc.titleDating the onset and nature of the Middle Permian Emeishan large igneous province eruptions in SW China using conodont biostratigraphy and its bearing on mantle plume uplift modelsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0024-4937&volume=119&spage=20–33&epage=&date=2010&atitle=Dating+the+onset+and+nature+of+the+Middle+Permian+Emeishan+large+igneous+province+eruptions+in+SW+China+using+conodont+biostratigraphy+and+its+bearing+on+mantle+plume+uplift+modelsen_HK
dc.identifier.emailAli, JR:jrali@hku.hken_HK
dc.identifier.authorityAli, JR=rp00659en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.lithos.2010.05.012en_HK
dc.identifier.scopuseid_2-s2.0-77955574562en_HK
dc.identifier.hkuros181428en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77955574562&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume119en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage20en_HK
dc.identifier.epage33en_HK
dc.identifier.isiWOS:000283015800005-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridSun, Y=24554569500en_HK
dc.identifier.scopusauthoridLai, X=15052076900en_HK
dc.identifier.scopusauthoridWignall, PB=7003732484en_HK
dc.identifier.scopusauthoridWiddowson, M=7006622759en_HK
dc.identifier.scopusauthoridAli, JR=7102266465en_HK
dc.identifier.scopusauthoridJiang, H=14043655000en_HK
dc.identifier.scopusauthoridWang, W=36072896000en_HK
dc.identifier.scopusauthoridYan, C=36509546700en_HK
dc.identifier.scopusauthoridBond, DPG=7102527872en_HK
dc.identifier.scopusauthoridVédrine, S=22959077700en_HK
dc.identifier.citeulike7241953-

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