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Title: Dehydration Melting Below the Undersaturated Transition Zone

Abstract

A reflector 70–130 km below the base of the transition zone beneath Tibet is observed in receiver functions and underside seismic reflections, at depths consistent with the transition of garnet to bridgmanite. Contrast in water storage capacity between the minerals of the Earth's transition zone and lower mantle suggests the possibility for dehydration melting at the top of the lower mantle. First-principles calculations combined with laboratory synthesis experiments constrain the mantle water capacity across the base of the transition zone and into the top of the lower mantle. Herein, we interpret the observed seismic signal as consistent with 3–4 vol % hydrous melt resulting from dehydration melting in the garnet to bridgmanite transition. Should seismic signals evident in downwelling region result from water contents representative of upper mantle water globally, this constrains the water stored in nominally anhydrous minerals in the mantle to <30% the mass of the surface oceans.

Authors:
 [1];  [2];  [3]; ORCiD logo [4];  [5];  [6]
  1. The Ohio State Univ., Columbus, OH (United States)
  2. Westfälische Wilhelms‐Univ. Münster (Germany)
  3. Univ. of Bristol (United Kingdom)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. Univ. Paris-Saclay, Gif-sur-Yvette (France)
  6. Sorbonne Univ., Paris (France)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1604001
Report Number(s):
[LA-UR-19-28369]
[Journal ID: ISSN 1525-2027]
Grant/Contract Number:  
[89233218CNA000001; EAR 1724693; EAR 14‐52545]
Resource Type:
Accepted Manuscript
Journal Name:
Geochemistry, Geophysics, Geosystems
Additional Journal Information:
[ Journal Volume: 21; Journal Issue: 2]; Journal ID: ISSN 1525-2027
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
garnet; perovskite; ringwoodite; transition zone; melting; density functional theory

Citation Formats

Panero, Wendy R., Thomas, Christine, Myhill, Robert, Pigott, Jeffrey S., Raepsaet, C., and Bureau, H. Dehydration Melting Below the Undersaturated Transition Zone. United States: N. p., 2020. Web. doi:10.1029/2019GC008712.
Panero, Wendy R., Thomas, Christine, Myhill, Robert, Pigott, Jeffrey S., Raepsaet, C., & Bureau, H. Dehydration Melting Below the Undersaturated Transition Zone. United States. doi:10.1029/2019GC008712.
Panero, Wendy R., Thomas, Christine, Myhill, Robert, Pigott, Jeffrey S., Raepsaet, C., and Bureau, H. Tue . "Dehydration Melting Below the Undersaturated Transition Zone". United States. doi:10.1029/2019GC008712.
@article{osti_1604001,
title = {Dehydration Melting Below the Undersaturated Transition Zone},
author = {Panero, Wendy R. and Thomas, Christine and Myhill, Robert and Pigott, Jeffrey S. and Raepsaet, C. and Bureau, H.},
abstractNote = {A reflector 70–130 km below the base of the transition zone beneath Tibet is observed in receiver functions and underside seismic reflections, at depths consistent with the transition of garnet to bridgmanite. Contrast in water storage capacity between the minerals of the Earth's transition zone and lower mantle suggests the possibility for dehydration melting at the top of the lower mantle. First-principles calculations combined with laboratory synthesis experiments constrain the mantle water capacity across the base of the transition zone and into the top of the lower mantle. Herein, we interpret the observed seismic signal as consistent with 3–4 vol % hydrous melt resulting from dehydration melting in the garnet to bridgmanite transition. Should seismic signals evident in downwelling region result from water contents representative of upper mantle water globally, this constrains the water stored in nominally anhydrous minerals in the mantle to <30% the mass of the surface oceans.},
doi = {10.1029/2019GC008712},
journal = {Geochemistry, Geophysics, Geosystems},
number = [2],
volume = [21],
place = {United States},
year = {2020},
month = {1}
}

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Works referenced in this record:

Iron hydride formed by the reaction of iron, silicate, and water: Implications for the light element of the Earth's core
journal, July 1995

  • Yagi, Takehiko; Hishinuma, Takahiro
  • Geophysical Research Letters, Vol. 22, Issue 14
  • DOI: 10.1029/95GL01792

Seismological detection of low‐velocity anomalies surrounding the mantle transition zone in Japan subduction zone
journal, March 2016

  • Liu, Zhen; Park, Jeffrey; Karato, Shun‐ichiro
  • Geophysical Research Letters, Vol. 43, Issue 6
  • DOI: 10.1002/2015GL067097

Dry (Mg,Fe)SiO 3 perovskite in the Earth's lower mantle
journal, February 2015

  • Panero, Wendy R.; Pigott, Jeffrey S.; Reaman, Daniel M.
  • Journal of Geophysical Research: Solid Earth, Vol. 120, Issue 2
  • DOI: 10.1002/2014JB011397

Thermodynamics of mantle minerals - I. Physical properties
journal, August 2005


Hydrous melting and partitioning in and above the mantle transition zone: Insights from water-rich MgO–SiO2–H2O experiments
journal, March 2017


Mantle transition zone structure beneath India and Western China from migration of PP and SS precursors
journal, January 2014

  • Lessing, S.; Thomas, C.; Rost, S.
  • Geophysical Journal International, Vol. 197, Issue 1
  • DOI: 10.1093/gji/ggt511

Dehydration melting at the top of the lower mantle
journal, June 2014


Iron-water reaction at high pressure and temperature, and hydrogen transport into the core
journal, March 2005

  • Ohtani, Eiji; Hirao, Naohisa; Kondo, Tadashi
  • Physics and Chemistry of Minerals, Vol. 32, Issue 1
  • DOI: 10.1007/s00269-004-0443-6

Subsolidus and melting phase relations of basaltic composition in the uppermostlower mantle
journal, June 2002


Lower-mantle water reservoir implied by the extreme stability of a hydrous aluminosilicate
journal, December 2014

  • Pamato, Martha G.; Myhill, Robert; Boffa Ballaran, Tiziana
  • Nature Geoscience, Vol. 8, Issue 1
  • DOI: 10.1038/ngeo2306

From ultrasoft pseudopotentials to the projector augmented-wave method
journal, January 1999


The equation of state of a molten komatiite: 2. Application to komatiite petrogenesis and the Hadean Mantle
journal, January 1991

  • Miller, Gregory H.; Stolper, Edward M.; Ahrens, Thomas J.
  • Journal of Geophysical Research, Vol. 96, Issue B7
  • DOI: 10.1029/91JB01203

Global observations of reflectors in the mid-mantle with implications for mantle structure and dynamics
journal, January 2018


Quantification of water in majoritic garnet
journal, May 2015

  • Thomas, Sylvia-Monique; Wilson, Kathryn; Koch-Müller, Monika
  • American Mineralogist, Vol. 100, Issue 5-6
  • DOI: 10.2138/am-2015-5136

The dynamics of melt and shear localization in partially molten aggregates
journal, August 2006

  • Katz, Richard F.; Spiegelman, Marc; Holtzman, Benjamin
  • Nature, Vol. 442, Issue 7103
  • DOI: 10.1038/nature05039

Evidence of Subduction-Related Thermal and Compositional Heterogeneity Below the United States From Transition Zone Receiver Functions
journal, September 2018

  • Maguire, Ross; Ritsema, Jeroen; Goes, Saskia
  • Geophysical Research Letters, Vol. 45, Issue 17
  • DOI: 10.1029/2018GL078378

Coupled substitution of Fe 3+ and H + for Si in wadsleyite: A study by polarized infrared and Mössbauer spectroscopies and single-crystal X-ray diffraction
journal, May 2016

  • Kawazoe, Takaaki; Chaudhari, Alok; Smyth, Joseph R.
  • American Mineralogist, Vol. 101, Issue 5
  • DOI: 10.2138/am-2016-5625

Stability of hydrous silicate at high pressures and water transport to the deep lower mantle
journal, February 2014

  • Nishi, M.; Irifune, T.; Tsuchiya, J.
  • Nature Geoscience, Vol. 7, Issue 3
  • DOI: 10.1038/ngeo2074

Continental flood basalts derived from the hydrous mantle transition zone
journal, July 2015

  • Wang, Xuan-Ce; Wilde, Simon A.; Li, Qiu-Li
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms8700

The Generation and Compaction of Partially Molten Rock
journal, August 1984


Calibration of infrared spectroscopy by elastic recoil detection analysis of H in synthetic olivine
journal, December 2012


Charge order in magnetite. An LDA+ U study
journal, March 2005


Topography of upper mantle seismic discontinuities beneath the North Atlantic: The Azores, Canary and Cape Verde plumes
journal, January 2015

  • Saki, Morvarid; Thomas, Christine; Nippress, Stuart E. J.
  • Earth and Planetary Science Letters, Vol. 409
  • DOI: 10.1016/j.epsl.2014.10.052

The Redox State of Earth's Mantle
journal, May 2008


Ferric iron and water incorporation in wadsleyite under hydrous and oxidizing conditions: A XANES, Mossbauer, and SIMS study
journal, August 2012

  • Bolfan-Casanova, N.; Munoz, M.; McCammon, C.
  • American Mineralogist, Vol. 97, Issue 8-9
  • DOI: 10.2138/am.2012.3869

Thermodynamics of Water Solubility and Partitioning
journal, January 2006


Stability of hydrous melt at the base of the Earth's upper mantle
journal, January 2006

  • Sakamaki, Tatsuya; Suzuki, Akio; Ohtani, Eiji
  • Nature, Vol. 439, Issue 7073
  • DOI: 10.1038/nature04352

Global seismic data reveal little water in the mantle transition zone
journal, August 2016


Mantle transition zone structure along a profile in the SW Pacific: thermal and compositional variations
journal, January 2009


Experimental evidence for the existence of iron-rich metal in the Earth's lower mantle
journal, March 2004

  • Frost, Daniel J.; Liebske, Christian; Langenhorst, Falko
  • Nature, Vol. 428, Issue 6981
  • DOI: 10.1038/nature02413

Water content in the transition zone from electrical conductivity of wadsleyite and ringwoodite
journal, April 2005

  • Huang, Xiaoge; Xu, Yousheng; Karato, Shun-ichiro
  • Nature, Vol. 434, Issue 7034
  • DOI: 10.1038/nature03426

Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set
journal, July 1996


Sound velocity of CaSiO3 perovskite suggests the presence of basaltic crust in the Earth’s lower mantle
journal, January 2019


Structural systematics of hydrous ringwoodite and water in Earth’s interior
journal, October 2003

  • Smyth, Joseph R.; Holl, Christopher M.; Frost, Daniel J.
  • American Mineralogist, Vol. 88, Issue 10
  • DOI: 10.2138/am-2003-1001

Pressure and temperature-dependence of water solubility in Fe-free wadsleyite
journal, July 2005


Solid–liquid iron partitioning in Earth’s deep mantle
journal, July 2012

  • Andrault, Denis; Petitgirard, Sylvain; Lo Nigro, Giacomo
  • Nature, Vol. 487, Issue 7407
  • DOI: 10.1038/nature11294

Whole-mantle convection and the transition-zone water filter
journal, September 2003


Structure and crystal chemistry of hydrous wadsleyite, Mg1.75SiH0.5O4: possible hydrous magnesium silicate in the mantle transition zone
journal, October 1996

  • Kudoh, Y.; Inoue, T.; Arashi, H.
  • Physics and Chemistry of Minerals, Vol. 23, Issue 7
  • DOI: 10.1007/BF00202032

First principles determination of the structure and elasticity of hydrous ringwoodite
journal, January 2010


A hot midmantle anomaly in the area of the Indian Ocean Geoid Low: Hot Anomaly Below IOGL
journal, July 2017

  • Reiss, Anne-Sophie; Thomas, Christine; van Driel, Jac
  • Geophysical Research Letters, Vol. 44, Issue 13
  • DOI: 10.1002/2017GL073440

Water solubility in majoritic garnet in subducting oceanic crust: WATER SOLUBILITY IN MAJORITIC GARNET
journal, November 2003

  • Katayama, Ikuo; Hirose, Kei; Yurimoto, Hisayoshi
  • Geophysical Research Letters, Vol. 30, Issue 22
  • DOI: 10.1029/2003GL018127

Metal saturation in the upper mantle
journal, September 2007

  • Rohrbach, Arno; Ballhaus, Chris; Golla–Schindler, Ute
  • Nature, Vol. 449, Issue 7161
  • DOI: 10.1038/nature06183

Influence of phase transformations on lateral heterogeneity and dynamics in Earth's mantle
journal, November 2007


A nearly water-saturated mantle transition zone inferred from mineral viscosity
journal, June 2017

  • Fei, Hongzhan; Yamazaki, Daisuke; Sakurai, Moe
  • Science Advances, Vol. 3, Issue 6
  • DOI: 10.1126/sciadv.1603024

Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set
journal, October 1996


Subducted lithosphere beneath the Kuriles from migration of PP precursors
journal, November 2011


Density of hydrous silicate melt at the conditions of Earth's deep upper mantle
journal, November 2005

  • Matsukage, Kyoko N.; Jing, Zhicheng; Karato, Shun-ichiro
  • Nature, Vol. 438, Issue 7067
  • DOI: 10.1038/nature04241

Seismic signature of a hydrous mantle transition zone
journal, January 2016

  • Thio, Vincent; Cobden, Laura; Trampert, Jeannot
  • Physics of the Earth and Planetary Interiors, Vol. 250
  • DOI: 10.1016/j.pepi.2015.11.005

Converted phases from sharp 1000 km depth mid-mantle heterogeneity beneath Western Europe
journal, February 2017


Crystal structure of monoclinic hydrous wadsleyite [beta -(Mg,Fe) 2 SiO 4 ]
journal, April 1997

  • Smyth, Joseph R.; Kawamoto, Tatsuhiko; Jacobsen, Stephen D.
  • American Mineralogist, Vol. 82, Issue 3-4
  • DOI: 10.2138/am-1997-3-404

Stability of phase H in the MgSiO 4 H 2 –AlOOH–SiO 2 system
journal, April 2017


Dry mantle transition zone inferred from the conductivity of wadsleyite and ringwoodite
journal, January 2008

  • Yoshino, Takashi; Manthilake, Geeth; Matsuzaki, Takuya
  • Nature, Vol. 451, Issue 7176
  • DOI: 10.1038/nature06427

Crustal and upper-mantle structure beneath the western Atlas Mountains in SW Morocco derived from receiver functions
journal, July 2014

  • Spieker, Kathrin; Wölbern, Ingo; Thomas, Christine
  • Geophysical Journal International, Vol. 198, Issue 3
  • DOI: 10.1093/gji/ggu216

Major and trace element composition of the depleted MORB mantle (DMM)
journal, February 2005


Seismic evidence for water transport out of the mantle transition zone beneath the European Alps
journal, January 2018


Crystal structure, Raman and FTIR spectroscopy, and equations of state of OH-bearing MgSiO3 akimotoite
journal, August 2013

  • Ye, Yu; Smyth, Joseph R.; Jacobsen, Steven D.
  • Contributions to Mineralogy and Petrology, Vol. 166, Issue 5
  • DOI: 10.1007/s00410-013-0933-y

Experiments on flow focusing in soluble porous media, with applications to melt extraction from the mantle
journal, January 1995

  • Kelemen, Peter B.; Whitehead, J. A.; Aharonov, Einat
  • Journal of Geophysical Research: Solid Earth, Vol. 100, Issue B1
  • DOI: 10.1029/94JB02544

Hydrous ringwoodite to 5 K and 35 GPa: Multiple hydrogen bonding sites resolved with FTIR spectroscopy
journal, March 2013

  • Panero, W. R.; Smyth, J. R.; Pigott, J. S.
  • American Mineralogist, Vol. 98, Issue 4
  • DOI: 10.2138/am.2013.3978

Global Observations of Mantle Discontinuities Using SS and PP Precursors
journal, August 2009


Tetrahedral ferric iron in oxidized hydrous wadsleyite
journal, February 2014

  • Smyth, J. R.; Bolfan-Casanova, N.; Avignant, D.
  • American Mineralogist, Vol. 99, Issue 2-3
  • DOI: 10.2138/am.2014.4520

Systematic study of hydrogen incorporation into Fe-free wadsleyite
journal, June 2010

  • Litasov, Konstantin D.; Shatskiy, Anton; Ohtani, Eiji
  • Physics and Chemistry of Minerals, Vol. 38, Issue 1
  • DOI: 10.1007/s00269-010-0382-3

Calculation of the energetics of water incorporation in majorite garnet
journal, May 2015

  • Pigott, Jeffrey S.; Wright, Kate; Gale, Julian D.
  • American Mineralogist, Vol. 100, Issue 5-6
  • DOI: 10.2138/am-2015-5063

Subduction-transition zone interaction: A review
journal, April 2017

  • Goes, Saskia; Agrusta, Roberto; van Hunen, Jeroen
  • Geosphere, Vol. 13, Issue 3
  • DOI: 10.1130/GES01476.1

Array seismology: Methods and applications
journal, January 2002


Hydrous mantle transition zone indicated by ringwoodite included within diamond
journal, March 2014

  • Pearson, D. G.; Brenker, F. E.; Nestola, F.
  • Nature, Vol. 507, Issue 7491
  • DOI: 10.1038/nature13080

First principles investigation of the structural and elastic properties of hydrous wadsleyite under pressure
journal, January 2009

  • Tsuchiya, Jun; Tsuchiya, Taku
  • Journal of Geophysical Research, Vol. 114, Issue B2
  • DOI: 10.1029/2008JB005841

Elasticity of phase D and implication for the degree of hydration of deep subducted slabs: ELASTICITY OF PHASE D
journal, March 2012

  • Rosa, Angelika D.; Sanchez-Valle, Carmen; Ghosh, Sujoy
  • Geophysical Research Letters, Vol. 39, Issue 6
  • DOI: 10.1029/2012GL050927

Density Functional Theory in Transition-Metal Chemistry: A Self-Consistent Hubbard U Approach
journal, September 2006