Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle
Fukui, H; Yoneda, A; Nakatsuka, A; Tsujino, N; Kamada, S; Ohtani, E; Shatskiy, A; Hirao, N; Tsutsui, S; Uchiyama, H; Baron, AQ
| HERO ID | 4248159 |
|---|---|
| In Press | No |
| Year | 2016 |
| Title | Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle |
| Authors | Fukui, H; Yoneda, A; Nakatsuka, A; Tsujino, N; Kamada, S; Ohtani, E; Shatskiy, A; Hirao, N; Tsutsui, S; Uchiyama, H; Baron, AQ |
| Journal | Scientific Reports |
| Volume | 6 |
| Page Numbers | 33337 |
| Abstract | 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 MgSiO3 and (Mg,Fe,Al)(Si,Al)O3 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. |
| Doi | 10.1038/srep33337 |
| Pmid | 27642083 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |