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dc.contributor.author
Sun, Yizhuo
dc.contributor.author
Hier-Majumder, Saswata
dc.contributor.author
Tauzin, Benoît
dc.contributor.author
Walter, Michael
dc.contributor.author
Ballmer, Maxim
dc.contributor.author
Xu, Yigang
dc.contributor.author
Kim, Seongryong
dc.date.accessioned
2022-01-24T16:56:51Z
dc.date.available
2022-01-24T12:51:55Z
dc.date.available
2022-01-24T16:56:51Z
dc.date.issued
2021-10
dc.identifier.issn
2169-9313
dc.identifier.issn
0148-0227
dc.identifier.issn
2169-9356
dc.identifier.other
10.1029/2021jb022167
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/527893
dc.description.abstract
A seismic low velocity layer (LVL) above the mantle transition zone (MTZ), often thought to be caused by volatile-induced melting, can significantly modulate planetary volatile cycles. In this work, we show that an LVL observed beneath northeast Asia is characterized by small, 0.8 (Formula presented.) 0.5 vol%, average degrees of partial melting. Seismically derived P-T conditions of the LVL indicate that slab-derived (Formula presented.), possibly combined with small amounts of (Formula presented.) O, is necessary to induce melting. Modeling the reactive infiltration instability of the melt in a stationary mantle above a stalled slab, we demonstrate that the volatile-rich melt slowly rises above the stalled slab in the MTZ, with percolation velocities of 200–500 (Formula presented.) m/yr. The melt remains stable within the LVL for this geologically significant period of time, potentially transferring up to 52 Mt/yr of (Formula presented.) from the subducting slab to the mantle for an LVL similar in areal extent ((Formula presented.)) to the northeast Asian LVL. Reaction between the melt channels and the LVL mantle precipitates up to 200 ppmw solid C in localized zones. Using the inferred small melt volume fraction to model trace element abundances and isotopic signatures, we show that interaction between this melt and the surrounding mantle can over the long-term produce rocks bearing a HIMU like geochemical signature.
en_US
dc.language.iso
en
en_US
dc.publisher
American Geophysical Union
en_US
dc.subject
carbonate-rich melts
en_US
dc.subject
low-velocity layer
en_US
dc.subject
northeast Asia
en_US
dc.subject
reactive infiltration instability
en_US
dc.subject
transition zone
en_US
dc.subject
volatile cycle
en_US
dc.title
Evidence of Volatile‐Induced Melting in the Northeast Asian Upper Mantle
en_US
dc.type
Journal Article
dc.date.published
2021-10-01
ethz.journal.title
Journal of Geophysical Research: Solid Earth
ethz.journal.volume
126
en_US
ethz.journal.issue
10
en_US
ethz.journal.abbreviated
J. geophys. res. Solid earth
ethz.pages.start
e2021JB022167
en_US
ethz.size
17 p.
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Washington, DC
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02506 - Institut für Geophysik / Institute of Geophysics::03698 - Tackley, Paul / Tackley, Paul
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02506 - Institut für Geophysik / Institute of Geophysics::03698 - Tackley, Paul / Tackley, Paul
en_US
ethz.date.deposited
2022-01-24T12:52:01Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2022-01-24T16:56:58Z
ethz.rosetta.lastUpdated
2022-03-29T17:47:57Z
ethz.rosetta.versionExported
true
ethz.COinS
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