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dc.contributor.author
Flament, Nicolas
dc.contributor.author
Williams, Simon
dc.contributor.author
Müller, R.D.
dc.contributor.author
Gurnis, Michael
dc.contributor.author
Bower, Dan J.
dc.date.accessioned
2017-07-18T16:55:34Z
dc.date.available
2017-06-12T19:33:40Z
dc.date.available
2017-07-18T16:55:34Z
dc.date.issued
2017
dc.identifier.other
10.1038/ncomms14164
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/128066
dc.identifier.doi
10.3929/ethz-b-000128066
dc.description.abstract
A unique structure in the Earth’s lowermost mantle, the Perm Anomaly, was recently identified beneath Eurasia. It seismologically resembles the large low-shear velocity provinces (LLSVPs) under Africa and the Pacific, but is much smaller. This challenges the current understanding of the evolution of the plate–mantle system in which plumes rise from the edges of the two LLSVPs, spatially fixed in time. New models of mantle flow over the last 230 million years reproduce the present-day structure of the lower mantle, and show a Perm-like anomaly. The anomaly formed in isolation within a closed subduction network ∼22,000 km in circumference prior to 150 million years ago before migrating ∼1,500 km westward at an average rate of 1 cm year−1, indicating a greater mobility of deep mantle structures than previously recognized. We hypothesize that the mobile Perm Anomaly could be linked to the Emeishan volcanics, in contrast to the previously proposed Siberian Traps.
en_US
dc.language.iso
en
en_US
dc.publisher
Nature Publishing Group
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Geology
en_US
dc.subject
Seismology
en_US
dc.subject
Tectonics
en_US
dc.subject
Geodynamics
en_US
dc.subject
Geophysics
en_US
dc.title
Origin and evolution of the deep thermochemical structure beneath Eurasia
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2017-01-18
ethz.journal.title
Nature Communications
ethz.journal.volume
8
en_US
ethz.pages.start
14164
en_US
ethz.size
9 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
007044158
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-12T19:34:51Z
ethz.source
ECIT
ethz.identifier.importid
imp593655399026712720
ethz.ecitpid
pub:190970
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-18T16:55:39Z
ethz.rosetta.lastUpdated
2019-02-02T11:04:27Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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