Results 171 to 180 of about 105,255 (290)

Ab Initio Study of the Conductivities of B2 FeSi Under Core‐Mantle Boundary Conditions

open access: yesGeophysical Research Letters, Volume 52, Issue 10, 28 May 2025.
Abstract While the ultra‐low velocity zones (ULVZs) may hold key information about deep Earth dynamics, their elusive state and origin remain enigmatic. Recent high‐pressure experiments suggest that ULVZs may originate from the B2 FeSi crystallization from the outer core. Understanding the conductivity of the B2 phase can shed light on its role in deep
Yonghui Huang   +4 more
wiley   +1 more source

Upper Mantle Earthquakes Along the Edge of the Wyoming Craton

open access: yesGeophysical Research Letters, Volume 52, Issue 9, 16 May 2025.
Abstract Earthquakes in continental regions overwhelmingly occur in the crust where low pressure and temperature promote brittle failure in response to tectonic stress. In rare cases, primarily in the thickened lithosphere near the Himalayas and Tibet, continental earthquakes occur in the uppermost mantle, perhaps implying an abnormally deep brittle ...
Sean J. Hutchings   +5 more
wiley   +1 more source

Search for shallow magma accumulations at Augustine Volcano

open access: bronze, 1979
J. Kienle   +3 more
openalex   +2 more sources

A Stress Memory Effect in Olivine at Upper Mantle Pressures and Temperatures

open access: yesGeophysical Research Letters, Volume 52, Issue 9, 16 May 2025.
Abstract Cyclic deformation experiments on olivine aggregates have been conducted at pressures of 1.9–2.8 GPa and temperatures of 297–1250 K. Measurements of mechanical data combined with acoustic emission (AE) monitoring revealed that activity of AE increased with differential stress and ceased once loading was halted in the anelastic regime.
T. Ohuchi   +15 more
wiley   +1 more source

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