Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle

Seismological observations show that, in some regions of the lower mantle, an increase in bulk sound velocity, interestingly, occurs in the same volume where there is a decrease in shear velocity. We show that this anti-correlated behavior occurs on cation substitution in bridgmanite by making singl...

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Autores principales: Fukui, Hiroshi, Yoneda, Akira, Nakatsuka, Akihiko, Tsujino, Noriyoshi, Kamada, Seiji, Ohtani, Eiji, Shatskiy, Anton, Hirao, Naohisa, Tsutsui, Satoshi, Uchiyama, Hiroshi, Baron, Alfred Q. R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5027542/
https://www.ncbi.nlm.nih.gov/pubmed/27642083
http://dx.doi.org/10.1038/srep33337
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author Fukui, Hiroshi
Yoneda, Akira
Nakatsuka, Akihiko
Tsujino, Noriyoshi
Kamada, Seiji
Ohtani, Eiji
Shatskiy, Anton
Hirao, Naohisa
Tsutsui, Satoshi
Uchiyama, Hiroshi
Baron, Alfred Q. R.
author_facet Fukui, Hiroshi
Yoneda, Akira
Nakatsuka, Akihiko
Tsujino, Noriyoshi
Kamada, Seiji
Ohtani, Eiji
Shatskiy, Anton
Hirao, Naohisa
Tsutsui, Satoshi
Uchiyama, Hiroshi
Baron, Alfred Q. R.
author_sort Fukui, Hiroshi
collection PubMed
description Seismological observations show that, in some regions of the lower mantle, an increase in bulk sound velocity, interestingly, occurs in the same volume where there is a decrease in shear velocity. We show that this anti-correlated behavior occurs on cation substitution in bridgmanite by making single crystal elasticity measurements of MgSiO(3) and (Mg,Fe,Al)(Si,Al)O(3) using inelastic x-ray scattering in the ambient conditions. Cation substitution of ferrous iron and aluminum may explain large low shear velocity provinces in the lower mantle.
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spelling pubmed-50275422016-09-22 Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle Fukui, Hiroshi Yoneda, Akira Nakatsuka, Akihiko Tsujino, Noriyoshi Kamada, Seiji Ohtani, Eiji Shatskiy, Anton Hirao, Naohisa Tsutsui, Satoshi Uchiyama, Hiroshi Baron, Alfred Q. R. Sci Rep Article Seismological observations show that, in some regions of the lower mantle, an increase in bulk sound velocity, interestingly, occurs in the same volume where there is a decrease in shear velocity. We show that this anti-correlated behavior occurs on cation substitution in bridgmanite by making single crystal elasticity measurements of MgSiO(3) and (Mg,Fe,Al)(Si,Al)O(3) using inelastic x-ray scattering in the ambient conditions. Cation substitution of ferrous iron and aluminum may explain large low shear velocity provinces in the lower mantle. Nature Publishing Group 2016-09-19 /pmc/articles/PMC5027542/ /pubmed/27642083 http://dx.doi.org/10.1038/srep33337 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Fukui, Hiroshi
Yoneda, Akira
Nakatsuka, Akihiko
Tsujino, Noriyoshi
Kamada, Seiji
Ohtani, Eiji
Shatskiy, Anton
Hirao, Naohisa
Tsutsui, Satoshi
Uchiyama, Hiroshi
Baron, Alfred Q. R.
Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle
title Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle
title_full Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle
title_fullStr Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle
title_full_unstemmed Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle
title_short Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle
title_sort effect of cation substitution on bridgmanite elasticity: a key to interpret seismic anomalies in the lower mantle
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5027542/
https://www.ncbi.nlm.nih.gov/pubmed/27642083
http://dx.doi.org/10.1038/srep33337
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