Results 81 to 90 of about 12,582 (239)
Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.Abstract Potential drivers disrupting mid‐Proterozoic (∼1.8–0.8 Ga) environmental stasis remain poorly constrained. Here we examined carbonate Li isotopes from the ∼1.44 Ga Tieling Formation, North China, to evaluate the effects of continental chemical weathering on coeval oxygenation.
Lei Xu +12 more
wiley +1 more source
A Seismically Active Shear Zone in the Uppermost Mantle Beneath the Canadian Rockies
Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.Abstract Continental mantle earthquakes are uncommon but hold important clues for understanding lithospheric rheology. Few of these earthquakes (<10) have been documented in western North America, though it is likely more exist owing to difficulties in resolving focal depth for small earthquakes.
Sean J. Hutchings +2 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.Abstract The Armenian Highlands, a tectonically active segment of the Arabia‐Eurasia collision zone, exhibit widespread Quaternary volcanism, rapid uplift, and intense seismicity. However, the lithospheric processes driving these phenomena remain poorly understood.
Ivan Koulakov +5 more
wiley +1 more source
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.Abstract What happens when subduction stops is a key, but poorly understood, part of the tectonic cycle. Northern Borneo (Sabah) with a complex geological history of multiple episodes of subduction, magmatism, uplift, subsidence, and extension since the Mesozoic, is an ideal location for studying post‐subduction processes.
Amy Gilligan +6 more
wiley +1 more source
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.Abstract Magnetotelluric (MT) survey results from the Late Archean Manica greenstone belt, an extension of the Odzi‐Mutare greenstone belt of the Zimbabwe Craton, are presented. A total of 33 MT stations were acquired on an irregular grid with an average station spacing of approximately 5 km.
Joao Jr. J. Castelo +4 more
wiley +1 more source
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.Abstract From 2019 to 2024, gravity surveys were conducted at the Three Sisters volcanic cluster (TSVC), measuring 246 gravity sites using a spring relative gravimeter. We calculated the residual Bouguer anomaly and identified three main zones with negative anomalies, ranging from −4 to −8 mGal, located southwest and west of South Sister, within an ...
Hélène Le Mével +3 more
wiley +1 more source
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.Abstract Subduction initiation often begins with slow, forced convergence, switches “on” catastrophically as the slab collapses into the mantle, and then evolves to steady‐state, self‐sustained sinking that drives global plate movements. Numerical models suggest that the collapse phase implies sudden weakening of the plate interface.
Alissa J. Kotowski +3 more
wiley +1 more source