Results 181 to 190 of about 2,667 (222)

Mercury's Tidal Love Number h2 ${h}_{2}$ From Co‐Registration of MLA Profiles

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract Due to its eccentric orbit, Mercury experiences a varying gravitational pull from the Sun along its orbit, leading to periodic surface tidal deformation. The previous measurement of Mercury's tidal h2 ${h}_{2}$ by Bertone et al. (2021, https://doi.org/10.1029/2020je006683) is based on minimizing height differences at cross‐overs of the Mercury
Haifeng Xiao, Alexander Stark, Gregor Steinbrügge, Arthur Briaud, Luisa M. Lara, Pedro J. Gutiérrez   +5 more
wiley   +1 more source

Global mantle perturbations following the onset of modern plate tectonics. [PDF]

Sci Adv
Chen Q, Liu H, Giuliani A, Doucet LS, Johnson TE, Zhang L, Sun W.   +6 more
europepmc   +1 more source

Decrease in the Permeability of Microcracked and Macrocracked Granite at Elevated Pressure and Temperature

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract Pressure and temperature increase with depth, modifying the microstructure of crustal rocks. The opening or closing of micro‐ and macrocracks resulting from variations in the in‐situ conditions influences the permeability of crustal rocks. While confining pressure is known to close pre‐existing cracks, reducing permeability, the influence of ...
L. Carbillet, M. J. Heap, P. Baud, J. I. Farquharson   +3 more
wiley   +1 more source

Unraveling the mysteries of volatile cycling and habitability on Earth and beyond. [PDF]

Natl Sci Rev
Xu YG, Zhu RX, Dai MH.
europepmc   +1 more source

The Impact of Mélange Formation on the Rheology and H2O Budget of the Subduction Zone Interface, With Implications for Diapir Nucleation

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract At the subduction zone interface, a combination of mechanical deformation and (fluid‐mediated) chemical mixing of oceanic crust, sediment and mantle lithologies yields heterogeneous mélange lithologies. These mélanges have compositions and metamorphic mineral assemblages dissimilar to their endmember source lithologies, resulting in a ...
Benjamin Z. Klein, Mark D. Behn
wiley   +1 more source

Growth of continental crust and lithosphere subduction in the Hadean revealed by geochemistry and geodynamics. [PDF]

Nat Commun
Vezinet A, Chugunov AV, Sobolev AV, Jain C, Sobolev SV, Batanova VG, Asafov EV, Koshlyakova AN, Arndt NT, Danyushevsky LV, Valley JW.   +10 more
europepmc   +1 more source

Valence/Spin States of Iron in Peridotite Glass to Megabar Pressure Implications for Dense Iron‐Rich Silicate Melt at the Bottom of the Mantle

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract We have conducted high‐pressure electrical conductivity and Mössbauer spectroscopic measurements of peridotite glass as an analog of silicate melts. We observed the shoulder feature in the Mössbauer spectra above 60 GPa due to the emergence of the new Fe2+ component, which could be associated with the change of the iron partitioning ...
Izumi Mashino, Takashi Yoshino, Takaya Mitsui, Kosuke Fujiwara, Sayako Inoué, Takeshi Sakai   +5 more
wiley   +1 more source

Mesozoic intraoceanic subduction shaped the lower mantle beneath the East Pacific Rise. [PDF]

Sci Adv
Wang J, Lekić V, Schmerr NC, Gu YJ, Guo Y, Lin R.   +5 more
europepmc   +1 more source

Boundary Condition for the Electric Field in Earth's Core Models With Conducting Boundaries

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract The Earth's core flows are governed by magnetohydrodynamic equations, where boundary conditions determine how the electric field in the liquid core relates to that in the conducting boundaries. In the Earth's core, the no‐slip condition implies continuity of the electric field, following the continuous horizontal velocity field.
J. Rekier, S. A. Triana, B. Buffett
wiley   +1 more source

Light δD apatites reveal deep origin water in North China Craton intracontinental granites and basalts. [PDF]

Nat Commun
Yang CM, Xu YG, Xia XP, Yang JH, Huang XL, Spencer CJ, Sun JF, Yang Q.   +7 more
europepmc   +1 more source