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dc.contributor.authorPiccolo, Andrea
dc.contributor.authorPalin, Richard M.
dc.contributor.authorKaus, Boris J.P.
dc.contributor.authorWhite, Richard W.
dc.date.accessioned2019-09-30T23:37:28Z
dc.date.available2019-09-30T23:37:28Z
dc.date.issued2019-04
dc.identifier.citationPiccolo , A , Palin , R M , Kaus , B J P & White , R W 2019 , ' Generation of Earth's early continents from a relatively cool Archean mantle ' , Geochemistry, Geophysics, Geosystems , vol. 20 , no. 4 , pp. 1679-1697 . https://doi.org/10.1029/2018GC008079en
dc.identifier.issn1525-2027
dc.identifier.otherPURE: 257823366
dc.identifier.otherPURE UUID: ade1cdbe-a12b-4f2e-92e4-ce3b01319fac
dc.identifier.otherRIS: urn:775B34FD58EA89C45A3C55D460305B9B
dc.identifier.otherScopus: 85063662167
dc.identifier.otherORCID: /0000-0002-5270-3985/work/59953736
dc.identifier.otherWOS: 000473674300001
dc.identifier.urihttps://hdl.handle.net/10023/18589
dc.descriptionThis research has been supported by DFG grant, SPP 1833 Building a Habitable Earth and MAGMA Consolidator Grant (ERC project #71143).en
dc.description.abstractSeveral lines of evidence suggest that the Archean (4.0 2.5 Ga) mantle was hotter than today's potential temperature (TP) of  1350 ° C. However, the magnitude of such difference is poorly constrained, with TP estimation spanning from 1500 ° C to 1600 ° C during the Meso‐Archean (3.2‐2.8 Ga). Such differences have major implications for the interpreted mechanisms of continental crust generation on the early Earth, as their efficacy is highly sensitive to the TP. Here, we integrate petrological modeling with thermomechanical simulations to understand the dynamics of crust formation during Archean. Our results predict that partial melting of primitive oceanic crust produces felsic melts with geochemical signatures matching those observed in Archean cratons from a mantle TP as low as 1450 ° C thanks to lithospheric‐scale Rayleigh‐Taylor‐type instabilities. These simulations also infer the occurrence of intraplate deformation events that allow an efficient transport of crustal material into the mantle, hydrating it.
dc.format.extent19
dc.language.isoeng
dc.relation.ispartofGeochemistry, Geophysics, Geosystemsen
dc.rightsCopyright © 2019 American Geophysical Union. All Rights Reserved. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://doi.org/10.1029/2018GC008079en
dc.subjectContinental crusten
dc.subjectEarly Earthen
dc.subjectGeodynamic modelingen
dc.subjectGE Environmental Sciencesen
dc.subjectDASen
dc.subjectBDCen
dc.subject.lccGEen
dc.titleGeneration of Earth's early continents from a relatively cool Archean mantleen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.identifier.doihttps://doi.org/10.1029/2018GC008079
dc.description.statusPeer revieweden
dc.date.embargoedUntil2019-10-01


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