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dc.contributor.author
Baes, Marzieh
dc.contributor.author
Sobolev, Stephan
dc.contributor.author
Gerya, Taras
dc.contributor.author
Brune, Sascha
dc.date.accessioned
2020-03-11T14:19:35Z
dc.date.available
2020-03-08T03:51:21Z
dc.date.available
2020-03-11T14:19:35Z
dc.date.issued
2020-02
dc.identifier.issn
1525-2027
dc.identifier.other
10.1029/2019GC008663
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/403803
dc.identifier.doi
10.3929/ethz-b-000403803
dc.description.abstract
Initiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. Here, we investigate factors controlling the number and shape of retreating subducting slabs formed by plume‐lithosphere interaction. Using 3‐D thermomechanical models we show that the deformation regime, which defines formation of single‐slab or multi‐slab subduction, depends on several parameters such as age of oceanic lithosphere, thickness of the crust and large‐scale lithospheric extension rate. Our model results indicate that on present‐day Earth multi‐slab plume‐induced subduction is initiated only if the oceanic lithosphere is relatively young (<30–40 Myr, but >10 Myr), and the crust has a typical thickness of 8 km. In turn, development of single‐slab subduction is facilitated by older lithosphere and pre‐imposed extensional stresses. In early Earth, plume‐lithosphere interaction could have led to formation of either episodic short‐lived circular subduction when the oceanic lithosphere was young or to multi‐slab subduction when the lithosphere was old.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
subduction zone
en_US
dc.subject
plume
en_US
dc.subject
numerical model
en_US
dc.subject
singleslab
en_US
dc.subject
multi‐slab
en_US
dc.title
Plume-Induced Subduction Initiation: Single-Slab or Multi-Slab Subduction?
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2020-01-30
ethz.journal.title
Geochemistry, Geophysics, Geosystems
ethz.journal.volume
21
en_US
ethz.journal.issue
2
en_US
ethz.journal.abbreviated
Geochem. geophys. geosyst.
ethz.pages.start
e2019GC008663
en_US
ethz.size
19 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Hoboken, NJ
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2020-03-08T03:51:29Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-03-11T14:19:47Z
ethz.rosetta.lastUpdated
2020-03-11T14:19:47Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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