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- Publisher Website: 10.1144/0016-76492009-129
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Article: Emeishan large igneous province (SW China) and the mantle-plume up-doming hypothesis
Title | Emeishan large igneous province (SW China) and the mantle-plume up-doming hypothesis | ||||
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Authors | |||||
Keywords | Geology | ||||
Issue Date | 2010 | ||||
Publisher | Geological 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? | ||||
Abstract | The 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 Identifier | http://hdl.handle.net/10722/124653 | ||||
ISSN | 2023 Impact Factor: 2.6 2023 SCImago Journal Rankings: 1.166 | ||||
ISI Accession Number ID |
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 Field | Value | Language |
---|---|---|
dc.contributor.author | Ali, JR | en_HK |
dc.contributor.author | Fitton, JG | en_HK |
dc.contributor.author | Herzberg, C | en_HK |
dc.date.accessioned | 2010-10-31T10:46:36Z | - |
dc.date.available | 2010-10-31T10:46:36Z | - |
dc.date.issued | 2010 | en_HK |
dc.identifier.citation | Journal Of The Geological Society, 2010, v. 167 n. 5, p. 953-959 | en_HK |
dc.identifier.issn | 0016-7649 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/124653 | - |
dc.description.abstract | The 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.language | eng | en_HK |
dc.publisher | Geological Society Publishing House. The Journal's web site is located at http://www.geolsoc.org.uk/gsl/publications/journals/jgs | en_HK |
dc.relation.ispartof | Journal of the Geological Society | en_HK |
dc.subject | Geology | - |
dc.title | Emeishan large igneous province (SW China) and the mantle-plume up-doming hypothesis | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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.email | Ali, JR:jrali@hku.hk | en_HK |
dc.identifier.authority | Ali, JR=rp00659 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1144/0016-76492009-129 | en_HK |
dc.identifier.scopus | eid_2-s2.0-77955568643 | en_HK |
dc.identifier.hkuros | 181427 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-77955568643&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 167 | en_HK |
dc.identifier.issue | 5 | en_HK |
dc.identifier.spage | 953 | en_HK |
dc.identifier.epage | 959 | en_HK |
dc.identifier.eissn | 2041-479X | - |
dc.identifier.isi | WOS:000281190700009 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Ali, JR=7102266465 | en_HK |
dc.identifier.scopusauthorid | Fitton, JG=7005644677 | en_HK |
dc.identifier.scopusauthorid | Herzberg, C=7003747480 | en_HK |
dc.identifier.issnl | 0016-7649 | - |