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Article: Emeishan large igneous province (SW China) and the mantle-plume up-doming hypothesis

TitleEmeishan large igneous province (SW China) and the mantle-plume up-doming hypothesis
Authors
KeywordsGeology
Issue Date2010
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, 2010, v. 167 n. 5, p. 953-959 How to Cite?
AbstractThe Middle Permian (c. 262 Ma) Emeishan Basalt Formation of SW China is a commonly cited example of a large igneous province (LIP) that formed as a result of a deep-mantle plume impinging on the base of the lithosphere and generating large regional-scale up-doming prior to volcanism. Recently, however, this assertion has been challenged on the grounds that some lava flows close to the centre of the LIP were erupted in a submarine setting. Here we analyse all the available biolithostratigraphical, petrological, geochemical and volcanological information and show that this supports the idea that the terrain was generated by a plume that originated in the mantle. Emeishan basalt magma melted from a hot mantle source with trace element contents that are similar to the source of Icelandic and intraplate ocean island basalts. However, the amount and lateral extent of uplift is significantly less than is predicted by conventional deepmantle plume models. We conclude that large-scale doming is not a diagnostic feature of mantle plumes; surface topography can be greatly influenced by the type of lower mantle plume (thermal or thermochemical), how it passes through the transition zone, and how it interacts with the lithosphere. © 2010 Geological Society of London.
Persistent Identifierhttp://hdl.handle.net/10722/124653
ISSN
2015 Impact Factor: 2.473
2015 SCImago Journal Rankings: 1.449
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Research Grants CouncilHKU700204
Funding Information:

Aspects of this work were funded by a Hong Kong Research Grants Council award to J.R.A. (HKU700204). We thank P. Wignall, D. Bond and Y. Sun, who kindly shared information, and A. Saunders and A. Kerr for their thoughtful and constructive reviews.

References

 

DC FieldValueLanguage
dc.contributor.authorAli, JRen_HK
dc.contributor.authorFitton, JGen_HK
dc.contributor.authorHerzberg, Cen_HK
dc.date.accessioned2010-10-31T10:46:36Z-
dc.date.available2010-10-31T10:46:36Z-
dc.date.issued2010en_HK
dc.identifier.citationJournal Of The Geological Society, 2010, v. 167 n. 5, p. 953-959en_HK
dc.identifier.issn0016-7649en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124653-
dc.description.abstractThe Middle Permian (c. 262 Ma) Emeishan Basalt Formation of SW China is a commonly cited example of a large igneous province (LIP) that formed as a result of a deep-mantle plume impinging on the base of the lithosphere and generating large regional-scale up-doming prior to volcanism. Recently, however, this assertion has been challenged on the grounds that some lava flows close to the centre of the LIP were erupted in a submarine setting. Here we analyse all the available biolithostratigraphical, petrological, geochemical and volcanological information and show that this supports the idea that the terrain was generated by a plume that originated in the mantle. Emeishan basalt magma melted from a hot mantle source with trace element contents that are similar to the source of Icelandic and intraplate ocean island basalts. However, the amount and lateral extent of uplift is significantly less than is predicted by conventional deepmantle plume models. We conclude that large-scale doming is not a diagnostic feature of mantle plumes; surface topography can be greatly influenced by the type of lower mantle plume (thermal or thermochemical), how it passes through the transition zone, and how it interacts with the lithosphere. © 2010 Geological Society of London.en_HK
dc.languageengen_HK
dc.publisherGeological Society Publishing House. The Journal's web site is located at http://www.geolsoc.org.uk/gsl/publications/journals/jgsen_HK
dc.relation.ispartofJournal of the Geological Societyen_HK
dc.subjectGeology-
dc.titleEmeishan large igneous province (SW China) and the mantle-plume up-doming hypothesisen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0016-7649&volume=167&spage=953–959&epage=&date=2010&atitle=Emeishan+large+igneous+province+(SW+China)+and+the+mantle-plume+up-doming+hypothesis-
dc.identifier.emailAli, JR:jrali@hku.hken_HK
dc.identifier.authorityAli, JR=rp00659en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1144/0016-76492009-129en_HK
dc.identifier.scopuseid_2-s2.0-77955568643en_HK
dc.identifier.hkuros181427en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77955568643&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume167en_HK
dc.identifier.issue5en_HK
dc.identifier.spage953en_HK
dc.identifier.epage959en_HK
dc.identifier.eissn2041-479X-
dc.identifier.isiWOS:000281190700009-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridAli, JR=7102266465en_HK
dc.identifier.scopusauthoridFitton, JG=7005644677en_HK
dc.identifier.scopusauthoridHerzberg, C=7003747480en_HK

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