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Title: Competing Deformation Mechanisms in Periclase: Implications for Lower Mantle Anisotropy

Abstract

Seismic anisotropy is observed above the core-mantle boundary in regions of slab subduction and near the margins of Large Low Shear Velocity Provinces (LLSVPs). Ferropericlase is believed to be the second most abundant phase in the lower mantle. As it is rheologically weak, it may be a dominant source for anisotropy in the lowermost mantle. Understanding deformation mechanisms in ferropericlase over a range of pressure and temperature conditions is crucial to interpret seismic anisotropy. The effect of temperature on deformation mechanisms of ferropericlase has been established, but the effects of pressure are still controversial. With the aim to clarify and quantify the effect of pressure on deformation mechanisms, we perform room temperature compression experiments on polycrystalline periclase to 50 GPa. Lattice strains and texture development are modeled using the Elasto-ViscoPlastic Self Consistent method (EVPSC). Based on modeling results, we find that { 110 } ⟨ 1 1 ¯ 0 ⟩ slip is increasingly activated with higher pressure and is fully activated at ~50 GPa. Pressure and temperature have a competing effect on activities of dominant slip systems. An increasing { 100 } ⟨ 011 ⟩ : { 110 } ⟨ 1 1 ¯ 0 ⟩ ratio of slip activity ismore » expected as material moves from cold subduction regions towards hot upwelling region adjacent to LLSVPs. This could explain observed seismic anisotropy in the circum-Pacific region that appears to weaken near margins of LLVSPs.« less

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1571828
Grant/Contract Number:  
NA0003858
Resource Type:
Published Article
Journal Name:
Minerals
Additional Journal Information:
Journal Name: Minerals Journal Volume: 9 Journal Issue: 11; Journal ID: ISSN 2075-163X
Publisher:
MDPI AG
Country of Publication:
Switzerland
Language:
English

Citation Formats

Lin, Feng, Couper, Samantha, Jugle, Mike, and Miyagi, Lowell. Competing Deformation Mechanisms in Periclase: Implications for Lower Mantle Anisotropy. Switzerland: N. p., 2019. Web. doi:10.3390/min9110650.
Lin, Feng, Couper, Samantha, Jugle, Mike, & Miyagi, Lowell. Competing Deformation Mechanisms in Periclase: Implications for Lower Mantle Anisotropy. Switzerland. doi:10.3390/min9110650.
Lin, Feng, Couper, Samantha, Jugle, Mike, and Miyagi, Lowell. Wed . "Competing Deformation Mechanisms in Periclase: Implications for Lower Mantle Anisotropy". Switzerland. doi:10.3390/min9110650.
@article{osti_1571828,
title = {Competing Deformation Mechanisms in Periclase: Implications for Lower Mantle Anisotropy},
author = {Lin, Feng and Couper, Samantha and Jugle, Mike and Miyagi, Lowell},
abstractNote = {Seismic anisotropy is observed above the core-mantle boundary in regions of slab subduction and near the margins of Large Low Shear Velocity Provinces (LLSVPs). Ferropericlase is believed to be the second most abundant phase in the lower mantle. As it is rheologically weak, it may be a dominant source for anisotropy in the lowermost mantle. Understanding deformation mechanisms in ferropericlase over a range of pressure and temperature conditions is crucial to interpret seismic anisotropy. The effect of temperature on deformation mechanisms of ferropericlase has been established, but the effects of pressure are still controversial. With the aim to clarify and quantify the effect of pressure on deformation mechanisms, we perform room temperature compression experiments on polycrystalline periclase to 50 GPa. Lattice strains and texture development are modeled using the Elasto-ViscoPlastic Self Consistent method (EVPSC). Based on modeling results, we find that { 110 } ⟨ 1 1 ¯ 0 ⟩ slip is increasingly activated with higher pressure and is fully activated at ~50 GPa. Pressure and temperature have a competing effect on activities of dominant slip systems. An increasing { 100 } ⟨ 011 ⟩ : { 110 } ⟨ 1 1 ¯ 0 ⟩ ratio of slip activity is expected as material moves from cold subduction regions towards hot upwelling region adjacent to LLSVPs. This could explain observed seismic anisotropy in the circum-Pacific region that appears to weaken near margins of LLVSPs.},
doi = {10.3390/min9110650},
journal = {Minerals},
number = 11,
volume = 9,
place = {Switzerland},
year = {2019},
month = {10}
}

Journal Article:
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DOI: 10.3390/min9110650

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Works referenced in this record:

Modeling lower mantle anisotropy development in a subducting slab
journal, May 2006


Synthetic seismic anisotropy models within a slab impinging on the core–mantle boundary
journal, August 2014

  • Cottaar, Sanne; Li, Mingming; McNamara, Allen K.
  • Geophysical Journal International, Vol. 199, Issue 1
  • DOI: 10.1093/gji/ggu244

Low temperature deformation of impure MgO single crystals
journal, August 1985


How to reconcile body-wave and normal-mode reference earth models
journal, April 1996


Seismic anisotropy in the lower mantle: A comparison of waveform splitting of SKS and SKKS
journal, January 2004


Elasticity of MgO and a primary pressure scale to 55 GPa
journal, November 2000

  • Zha, C. -S.; Mao, H. -k.; Hemley, R. J.
  • Proceedings of the National Academy of Sciences, Vol. 97, Issue 25
  • DOI: 10.1073/pnas.240466697

Anisotropy in the deep Earth
journal, August 2017


Variable Azimuthal Anisotropy in Earth's Lowermost Mantle
journal, October 2004


Mantle dynamics inferred from the crystallographic preferred orientation of bridgmanite
journal, October 2016

  • Tsujino, Noriyoshi; Nishihara, Yu; Yamazaki, Daisuke
  • Nature, Vol. 539, Issue 7627
  • DOI: 10.1038/nature19777

Texture development and slip systems in bridgmanite and bridgmanite + ferropericlase aggregates
journal, June 2016


Shear deformation of bridgmanite and magnesiowustite aggregates at lower mantle conditions
journal, December 2015


X-ray transparent gasket for diamond anvil cell high pressure experiments
journal, April 2005

  • Merkel, Sébastien; Yagi, Takehiko
  • Review of Scientific Instruments, Vol. 76, Issue 4
  • DOI: 10.1063/1.1884195

A three-dimensional radially anisotropic model of shear velocity in the whole mantle
journal, October 2006


Elastic Shear Anisotropy of Ferropericlase in Earth's Lower Mantle
journal, April 2009


Deformation of Polycrystalline MgO Under Pressure
journal, August 1970


Peierls–Nabarro modelling of dislocations in MgO from ambient pressure to 100 GPa
journal, February 2009

  • Carrez, Philippe; Ferré, Denise; Cordier, Patrick
  • Modelling and Simulation in Materials Science and Engineering, Vol. 17, Issue 3
  • DOI: 10.1088/0965-0393/17/3/035010

Observations of changing anisotropy across the southern margin of the African LLSVP
journal, August 2013

  • Cottaar, Sanne; Romanowicz, Barbara
  • Geophysical Journal International, Vol. 195, Issue 2
  • DOI: 10.1093/gji/ggt285

Lowermost mantle anisotropy and deformation along the boundary of the African LLSVP
journal, May 2014

  • Lynner, Colton; Long, Maureen D.
  • Geophysical Research Letters, Vol. 41, Issue 10
  • DOI: 10.1002/2014GL059875

Dislocation creep of magnesiowüstite (Mg0.8Fe0.2O)
journal, December 2001

  • Stretton, Iona; Heidelbach, Florian; Mackwell, Stephen
  • Earth and Planetary Science Letters, Vol. 194, Issue 1-2
  • DOI: 10.1016/S0012-821X(01)00533-7

Elasto-viscoplastic self consistent modeling of the ambient temperature plastic behavior of periclase deformed up to 5.4 GPa
journal, November 2017

  • Lin, F.; Hilairet, N.; Raterron, P.
  • Journal of Applied Physics, Vol. 122, Issue 20
  • DOI: 10.1063/1.4999951

Deformation of periclase single crystals at high pressure and temperature: Quantification of the effect of pressure on slip-system activities
journal, June 2012

  • Girard, Jennifer; Chen, Jiuhua; Raterron, Paul
  • Journal of Applied Physics, Vol. 111, Issue 11
  • DOI: 10.1063/1.4726200

Slab stagnation in the shallow lower mantle linked to an increase in mantle viscosity
journal, March 2015

  • Marquardt, Hauke; Miyagi, Lowell
  • Nature Geoscience, Vol. 8, Issue 4
  • DOI: 10.1038/ngeo2393

Strongly Anisotropic Magnesiowüstite in Earth's Lower Mantle
journal, June 2018

  • Finkelstein, Gregory J.; Jackson, Jennifer M.; Said, Ayman
  • Journal of Geophysical Research: Solid Earth, Vol. 123, Issue 6
  • DOI: 10.1029/2017JB015349

Atomistically-informed crystal plasticity in MgO polycrystals under pressure
journal, July 2016


Dislocations and Plastic Deformation in MgO Crystals: A Review
journal, May 2018

  • Amodeo, Jonathan; Merkel, Sébastien; Tromas, Christophe
  • Crystals, Vol. 8, Issue 6
  • DOI: 10.3390/cryst8060240

Rietveld texture analysis from synchrotron diffraction images. II. Complex multiphase materials and diamond anvil cell experiments
journal, May 2014


Evidence for {100}<011> slip in ferropericlase in Earth's lower mantle from high-pressure/high-temperature experiments
journal, May 2018


A finite strain elastic–viscoplastic self-consistent model for polycrystalline materials
journal, April 2010

  • Wang, H.; Wu, P. D.; Tomé, C. N.
  • Journal of the Mechanics and Physics of Solids, Vol. 58, Issue 4
  • DOI: 10.1016/j.jmps.2010.01.004

Elastic anisotropy of D″ predicted from global models of mantle flow: PREDICTING ANISOTROPY IN D″
journal, October 2011

  • Walker, A. M.; Forte, A. M.; Wookey, J.
  • Geochemistry, Geophysics, Geosystems, Vol. 12, Issue 10
  • DOI: 10.1029/2011GC003732

The yield strength and dynamic behaviour of dislocations in MgO crystals at high temperatures
journal, July 1980

  • Sato, Fumio; Sumino, Koji
  • Journal of Materials Science, Vol. 15, Issue 7
  • DOI: 10.1007/BF00550578

Slip Systems in MgSiO3 Post-Perovskite: Implications for D'' Anisotropy
journal, September 2010


Deformation in the lowermost mantle: From polycrystal plasticity to seismic anisotropy
journal, June 2011

  • Wenk, Hans-Rudolf; Cottaar, Sanne; Tomé, Carlos N.
  • Earth and Planetary Science Letters, Vol. 306, Issue 1-2
  • DOI: 10.1016/j.epsl.2011.03.021

Laboratory and seismological observations of lower mantle isotropy
journal, May 1995

  • Meade, Charles; Silver, Paul G.; Kaneshima, Satoshi
  • Geophysical Research Letters, Vol. 22, Issue 10
  • DOI: 10.1029/95GL01091

Effect of Crystal Orientation on Plastic Deformation of Magnesium Oxide
journal, July 1963


Strength of magnesium oxide under high pressure: evidence for the grain-size dependence
journal, December 2004


Deformation of (Mg,Fe)SiO3 Post-Perovskite and D'' Anisotropy
journal, June 2007


The lattice strains in a specimen (cubic system) compressed nonhydrostatically in an opposed anvil device
journal, May 1993

  • Singh, Anil K.
  • Journal of Applied Physics, Vol. 73, Issue 9
  • DOI: 10.1063/1.352809

Combined texture and structure analysis of deformed limestone from time-of-flight neutron diffraction spectra
journal, January 1997

  • Lutterotti, L.; Matthies, S.; Wenk, H. -R.
  • Journal of Applied Physics, Vol. 81, Issue 2
  • DOI: 10.1063/1.364220

New advances in using seismic anisotropy, mineral physics and geodynamics to understand deformation in the lowermost mantle
journal, October 2011

  • Nowacki, Andy; Wookey, James; Kendall, J. -Michael
  • Journal of Geodynamics, Vol. 52, Issue 3-4
  • DOI: 10.1016/j.jog.2011.04.003

Modelling the effect of pressure on the critical shear stress of MgO single crystals
journal, April 2012


Deformation of polycrystalline MgO at pressures of the lower mantle: DEFORMATION OF MgO AT HIGH PRESSURE
journal, November 2002

  • Merkel, Sébastien; Wenk, Hans Rudolf; Shu, Jinfu
  • Journal of Geophysical Research: Solid Earth, Vol. 107, Issue B11
  • DOI: 10.1029/2001JB000920

Plastic Deformation of MgO Single Crystals up to 1600oC
journal, March 1965


Deformation of lower-mantle ferropericlase (Mg,Fe)O across the electronic spin transition
journal, April 2009

  • Lin, Jung-Fu; Wenk, Hans-Rudolf; Voltolini, Marco
  • Physics and Chemistry of Minerals, Vol. 36, Issue 10
  • DOI: 10.1007/s00269-009-0303-5