Results 91 to 100 of about 43,392 (192)
Remanent Magnetizations in Oxidized Olivine [PDF]
, 1975 G. S. Hoye, Michael Evans
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Geochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.Abstract Volcanic and seismic unrest on the Reykjanes Peninsula in SW Iceland that started in late 2019 after ∼800 years of quiescence has drawn wide interest to this on‐land extension of the Mid‐Atlantic spreading ridge. Here, we use seismic data collected across the larger Peninsula region, covering six volcanic systems and associated high ...
J. Jenkins +13 more
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Tectonics, Volume 44, Issue 4, April 2025.Abstract The essentially non‐magmatic continental rift system of the Upper Rhine Graben (URG) is segmented and characterized by intra‐rift sub‐basins that exhibit NE to NW trends suggesting complex basin development during rifting. Structural modeling and analyses of an about 40 km2 3D seismic survey from the northern part of the central URG segment ...
Florian Bauer +4 more
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How Cratonic Roots Survive With Weak Mid‐Lithosphere Discontinuities
Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.Abstract The stability of cratons has long been attributed to their neutral buoyancy and strong roots. However, recent seismic studies have revealed widespread mid‐lithospheric discontinuities (MLDs) within cratonic roots. Previous studies, based on geophysical and xenolith evidence, mainly suggest that MLDs are formed through metamorphic processes and
Qionghua Guo, Huilin Wang, Honglei Liu
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Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.Abstract Deep‐focus earthquakes at 350–660 km are presumably caused by olivine‐spinel phase transformation (PT). This cannot, however, explain the observed high seismic strain rate, which requires PT to complete within seconds, while metastable olivine does not transform for over a million years.
F. Lin +4 more
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Schwingungsspektren von Kristallen mit Olivin-Struktur / Vibrational Spectra of Crystals with Olivine Structure [PDF]
, 1973 V. Hohler, E. Funck
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Mantle Melting Conditions of Mare Lavas on South Pole–Aitken Basin of Lunar Farside
Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.Abstract The understanding of thermal evolution and magmatic history of the Moon has so far been informed by studies of rock samples from the nearside. However, the recently completed Chang'E‐6 mission by China National Space Administration has returned the first samples from the lunar farside, providing a unique opportunity to refine our understanding
Yishen Zhang +8 more
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A SCANNING ELECTRON MICROSCOPE STUDY OF OLIVINE CRYSTAL SURFACES [PDF]
, 1974 Edward J. Olsen, Lawrence Grossman
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Hydrogen Generation and Serpentinization of Olivine Under Flow Conditions
Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.Abstract Serpentinization of olivine is often studied in the laboratory under batch conditions. Olivine conversion in situ with enhanced natural hydrogen production will likely be implemented via injection of aqueous solutions. Hence, transport is relevant to the extent of olivine reaction and, potentially, the morphology of precipitates formed.
C. M. Ross +4 more
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Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical Conductivity
Geophysical Research Letters, Volume 52, Issue 5, 16 March 2025.Abstract The potential role of metasomatism‐induced hydrated layers, such as amphibole, in causing the mid‐lithospheric discontinuities (MLDs) has been widely debated. To determine whether amphibole is the compositional cause of the MLDs, we measured the electrical conductivity of mixtures of olivine and various proportions of amphiboles under high ...
Kewei Shen +7 more
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