Results 171 to 180 of about 2,903 (264)

Beyond Oxygen Fugacity: A Compositional Metric to Probe Earth's Redox Structure

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract We quantify the redox capacity (dO2) by redox titration—defined as the quantity of oxygen required to fully oxidize a sample—for rocks spanning Earth's upper mantle to surface sediments. The values span three orders of magnitude, with the greatest variability in metamorphic and surface rocks that host both highly reduced (rich in carbon and ...
Matthieu Emmanuel Galvez, Othmar Müntener, Samuel Laurent Jaccard   +2 more
wiley   +1 more source

Plume-induced emissions of deep methane linked to the end-Guadalupian mass extinction. [PDF]

Nat Commun
Liu SA, Xiong Z, Wu T, Zhao M.
europepmc   +1 more source

The Impact of 3D Structure on Coseismic Coastal Land‐Level Change and Tsunami Generation in the Cascadia Subduction Zone

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Estimates of coseismic vertical displacements from past and potential future subduction zone earthquakes provide critical constraints on regional seismic and tsunami hazard. Many studies use elastic homogeneous half‐space models to calculate vertical displacements from a specified earthquake slip distribution, neglecting complexities of 3D ...
Audrey M. Dunham, Jeonghyeop Kim, Erin Wirth, David Schmidt, Randall J. LeVeque, Yong Wei, Loyce M. Adams, Fred Pollitz   +7 more
wiley   +1 more source

Widespread ilmenite contributions to the surface water cycle in lunar Procellarum KREEP Terrane. [PDF]

Nat Commun
Xu Y, Shan L, Tian HC, Hao J, Lin Y, Wöhler C, Gu L, Guo Z, Li R, Zhang T, Yang W, Liu Y, Tang X, Gou S, He H, Zou Y, Li X.   +16 more
europepmc   +1 more source

Magnetotelluric Imaging of a Magma Plumbing System From the Asthenosphere to Crust Beneath the Newer Volcanic Province, Australia

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract The Newer Volcanic Province (NVP) in southeastern Australia is a classic example of continental intraplate volcanism located far from a plate boundary, yet the configuration of its magma plumbing system remains unclear. Using three‐dimensional (3D) magnetotelluric (MT) inversion, we imaged a vertically continuous, trans‐lithospheric conductive
Xinpeng Ma, Yunhe Liu, Changchun Yin, Haibin Yang, Zhihao Rong, Jingru Li, Lutz Gross, Yabin Li   +7 more
wiley   +1 more source

Lunar primitive mantle olivine returned by Chang'e-6. [PDF]

Nat Commun
Sheng SZ, Wang SJ, Li QL, Wu S, Wang H, Hua JX, Chen Z, Hao JH, Zhang B, He Y, Zhu JM.   +10 more
europepmc   +1 more source

Cation Disorder of Mg2SiO4 ${\text{Mg}}_{\mathbf{2}}{\text{SiO}}_{\mathbf{4}}$ in Super‐Earth Mantles

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Understanding the mineralogy of exoplanets is essential for unraveling their interior structures, dynamics, and evolution. For large super‐Earths, the post‐post spinel Mg2SiO4 ${\text{Mg}}_{2}{\text{SiO}}_{4}$, one of the major mantle phases, may undergo the order‐disorder transition (ODT) at high temperatures.
Donghao Zheng, Yifan Li, Yihang Peng, Rushi Gong, Zi‐Kui Liu, Jie Deng   +5 more
wiley   +1 more source

Heavy boron isotopes in intraplate basalts reveal recycled carbonate in the mantle. [PDF]

Sci Adv
Xu R, Cai Y, Lambart S, Chen C, Zhang JB, Zhou MF, Liu J, Bai Z, Wu T, Huang F, Ruan T, Liu Y.   +11 more
europepmc   +1 more source

Reconciling the geological history of western Turkey with plate circuits and mantle tomography

, 2010
Douwe J.J. van Hinsbergen, Nuretdin Kaymakçı, Wim Spakman, Trond H. Torsvik   +3 more
openalex   +2 more sources

The Buoyancy of Cratonic Lithospheric Mantle

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Cratons are generally thought to be characterized by stable, long‐lived mantle roots. However, recent studies have suggested that the lithospheric mantle may be prone to removal, implying that it may be denser than the asthenosphere. To address these suggestions, we use a global data set of mantle xenoliths to estimate the density structure of
Z. J. Sudholz, A. Copley, K. Priestley
wiley   +1 more source