cam.issuedOnline	2021-04-06
dc.contributor.author	Ball, PW
dc.contributor.author	White, Nicholas
dc.contributor.author	Maclennan, John
dc.contributor.author	Stephenson, SN
dc.contributor.orcid	Ball, PW [0000-0001-7054-807X]
dc.contributor.orcid	Maclennan, John [0000-0001-6857-9600]
dc.date.accessioned	2022-03-19T16:00:35Z
dc.date.available	2022-03-19T16:00:35Z
dc.date.issued	2021-04-06
dc.date.submitted	2020-05-07
dc.date.updated	2022-03-19T16:00:33Z
dc.description.abstract	The thermochemical structure of lithospheric and asthenospheric mantle exert primary controls on surface topography and volcanic activity. Volcanic rock compositions and mantle seismic velocities provide indirect observations of this structure. Here, we compile and analyze a global database of the distribution and composition of Neogene-Quaternary intraplate volcanic rocks. By integrating this database with seismic tomographic models, we show that intraplate volcanism is concentrated in regions characterized by slow upper mantle shear-wave velocities and by thin lithosphere (i.e. <100 km). We observe a negative correlation between shear-wave velocities at depths of 125-175 km and melt fractions inferred from volcanic rock compositions. Furthermore, mantle temperature and lithospheric thickness estimates obtained by geochemical modeling broadly agree with values determined from tomographic models that have been converted into temperature. Intraplate volcanism often occurs in regions where uplifted (but undeformed) marine sedimentary rocks are exposed. Regional elevation of these rocks can be generated by a combination of hotter asthenosphere and lithospheric thinning. Therefore, the distribution and composition of intraplate volcanic rocks through geologic time will help to probe past mantle conditions and surface processes.
dc.description.sponsorship	Not applicable
dc.identifier.doi	10.17863/CAM.82658
dc.identifier.eissn	2041-1723
dc.identifier.issn	2041-1723
dc.identifier.other	s41467-021-22323-9
dc.identifier.other	22323
dc.identifier.uri	https://www.repository.cam.ac.uk/handle/1810/335228
dc.language	en
dc.publisher	Springer Science and Business Media LLC
dc.subject	Article
dc.subject	/704/2151/209
dc.subject	/704/2151/210
dc.subject	/704/2151/2809
dc.subject	article
dc.title	Global influence of mantle temperature and plate thickness on intraplate volcanism.
dc.type	Article
dcterms.dateAccepted	2021-03-04
prism.issueIdentifier	1
prism.publicationName	Nat Commun
prism.volume	12
pubs.funder-project-id	Natural Environment Research Council (NE/J021539/1)
rioxxterms.licenseref.uri	http://creativecommons.org/licenses/by/4.0/
rioxxterms.version	VoR
rioxxterms.versionofrecord	10.1038/s41467-021-22323-9

Global influence of mantle temperature and plate thickness on intraplate volcanism.

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