Two-phase deformation of lower mantle mineral analogs
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- 作者：P. Kaerchera ; kaercher@liverpool.ac.uk" class="auth_mail" title="E-mail the corresponding author ; L. Miyagib ; W. Kanitpanyacharoenc ; E. Zepeda-Alarcond ; Y. Wange ; D. Parkinsonf ; R.A. Lebensohng ; F. De Carloe ; H.R. Wenkd
- 关键词：crystallographic preferred orientation ; seismic anisotropy ; two-phase deformation ; lower mantle rheology ; 3D X-ray microtomography
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：15 December 2016
- 年：2016
- 卷：456
- 期：Complete
- 页码：134-145
- 全文大小：2610 K
文摘
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First study of how volume percent of (Mg, Fe)O analog, NaCl, affects deformation and CPO in lower mantle analog assemblage.
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Weaker NaCl controls rheology at 15% volume.
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CPO in bridgmanite analog, NaMgF3, drastically reduced with 15% volume of NaCl.
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NaCl does not acquire any notable CPO.
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Results imply a weaker lower mantle and may explain why lower mantle is mostly isotropic.