Results 131 to 140 of about 31,006 (289)

Effect of Al on the sharpness of the MgSiO_3 perovskite to post-perovskite phase transition [PDF]

, 2005
By means of static ab-initio computations we investigate the influence of Al on the recently discovered perovskite to post-perovskite phase transition in MgSiO_3. We examine three substitution mechanisms for Al in the two structures: MgSi → AlAl; SiSiO →
Akber-Knutson, S., Asimow, Paul D., Steinle-Neumann, G.   +2 more
core  

Modeling of lower mantle seismic anisotropy beneath subduction zones [PDF]

, 2004
S. Nippress, Nick Kusznir, J. M. Kendall
openalex   +1 more source

Dislocation creep may control bridgmanite deformation in the Earth’s lower mantle

Communications Earth & Environment
Seismic anisotropy in the Earth’s lower mantle, particularly around subduction zones, is commonly attributed to deformation by dislocation creep, yet much of the lower mantle appears nearly isotropic.
Longli Guan, Daisuke Yamazaki, Noriyoshi Tsujino, Yuji Higo, Sho Kakizawa, Xiang Wu, Junfeng Zhang   +6 more
doaj   +1 more source

Hornblendite in the Lower Crust: A Possible Source for Porphyry Cu Deposits

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Lower crustal sulfide‐bearing Cu‐rich cumulates, mainly occurring as hornblendite, have been proposed as a critical source component for the development of giant porphyry Cu deposits (PCDs); however, their mineralogical and geochemical nature remain elusive.
Guangxu Li, Lingsen Zeng, Li‐E. Gao, Lilong Yan, Haitao Wang, Linghao Zhao   +5 more
wiley   +1 more source

Rayleigh Waves From OHANA OBSs in the Northeast Pacific Ocean Reveal Low Deep Shear Velocities and Pervasive Azimuthal Anisotropy

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract The 2021–2023 OHANA ocean‐bottom seismometer deployment in the northeast Pacific Ocean provides a rich data set for seismic studies to explore the crust, lithosphere and asthenosphere in a 600 km wide region about 1,500 km northeast of Hawaii, west of the Moonless Mountains. The study area covers mainly 40‐to‐55 Myr‐old Pacific lithosphere.
Gabi Laske, Grace Atkisson, John A. Collins, Donna K. Blackman   +3 more
wiley   +1 more source

Lattice preferred orientation and seismic anisotropy in sedimentary rocks [PDF]

, 2006
S.L.A. Valcke, M. Casey, Geoffrey E. Lloyd, J. M. Kendall, Q.J. Fisher   +4 more
openalex   +1 more source

New Imaging Approach for Constraining the Azimuth and Dip of Seismic Anisotropy Using Teleseismic P-wave Delays and its Application to the Western United States

, 2021
Brandon VanderBeek, Miles Bodmer, Manuele Faccenda   +2 more
openalex   +1 more source

Insights on the African Upper Mantle From Quasi‐Love Wave Scattering

Geochemistry, Geophysics, Geosystems
The African upper mantle is diverse, featuring several cratonic roots, active and magmatic continental rifting, abundant intra‐plate volcanism, and several oceanic hotspots offshore.
Thomas A. J. Merry, Caroline M. Eakin
doaj   +1 more source

Crustal and Upper Mantle Structure Beneath the Corinth Rift Using Receiver Function Analysis

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract The Gulf of Corinth is one of the fastest‐extending continental rifts in Europe, yet the link between present‐day strain, inherited crustal structure, and lithospheric dynamics remains debated. We investigate crustal thickness and Vp/Vs variations using receiver functions from 31 seismic stations.
Eleni E. Karagianni, Christel Tiberi, Alexandrine Gesret   +2 more
wiley   +1 more source

Azimuthal Seismic Anisotropy in the Upper Crust of the Japanese Islands Induced by the 2011 Tohoku‐Oki Megathrust Earthquake [PDF]

, 2018
Ilgoo Kim, Tae‐Kyung Hong
openalex   +1 more source