Results 61 to 70 of about 1,515 (211)

Tracking Deep Magma Migration Through Diffuse CO2 Degassing: Insights From Piton de la Fournaise Volcano (2013–2023)

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract Volcano monitoring requires identifying and distinguishing physico‐chemical processes at various depths within magma plumbing systems and their links to volcanic activity. Long‐term monitoring of deep magma reservoirs, extending down to tens of kilometers, is crucial even though signals from these depths are often altered or attenuated before ...
B. Bénard, A. Di Muro, A. Finizola, A. Peltier, V. Ferrazzini, I. Vlastelic, P. Besson, V. Famin, R. Gusset, K. Mussard, P. Kowalski, P. Boissier, C. Brunet, F. Lauret, N. Desfete, C. Griot, M. Liuzzo, S. Gurrieri, G. Giudice, F. Grassa, M. Longo   +20 more
wiley   +1 more source

Seismic Constraints on Temperature, Partial Melt, and Lithosphere‐Asthenosphere Dynamics in the Southwestern United States

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract The southwestern United States hosts well‐documented and dramatic variations in topography, seismicity, heat flow, magmatism, and seismic velocity structure. This region offers opportunities to investigate how processes such as temperature and partial melt are related to the Lithosphere‐Asthenosphere Boundary (LAB), and how they ultimately ...
E. M. Golos, K. M. Fischer, Z. Eilon
wiley   +1 more source

Magma storage and plumbing of adakite-type post-ophiolite intrusions in the Sabzevar ophiolitic zone, northeast Iran [PDF]

Solid Earth, 2015
Subduction-related adakite-type intrusive rocks emplaced into the late Cretaceous–Paleocene Sabzevar ophiolite zone, northeast Iran, range from Mg-andesite to rhyodacite in composition.
K. Jamshidi, H. Ghasemi, V. R. Troll, M. Sadeghian, B. Dahren   +4 more
doaj   +1 more source

Single Piezometric Stress Preserved in Strained Feldspar and Quartz From Intracontinental Lower Crust

Tectonics, Volume 45, Issue 3, March 2026.
Abstract The strength of the intracontinental lower crust exerts a primary control on regional‐scale deformation during continent‐continent collision. Because of the nominally anhydrous nature of much of the intracontinental lower crust, it is generally considered to be more viscous than lower crust in hydrated tectonic margins.
A. Osinchuk, B. V. Dyck, D. Wallis, A. Camacho   +3 more
wiley   +1 more source

Composition of the Sub‐Cratonic Mantle of the Guiana Shield Inferred From Diamond‐Hosted Inclusions

Geochemistry, Geophysics, Geosystems, 2021
The composition of diamond‐hosted inclusions provides insight into the character of the sub‐cratonic lithosphere of the Guiana Shield. Guyana's Paleoproterozoic diamonds preserve an inclusion suite comprised of forsterite (Fo ∼89.3–91.8), enstatite ...
R. Bassoo, K. S. Befus
doaj   +1 more source

Reconciling Seismic and Thermo‐Chemical Models of Cratonic Lithosphere

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Most published global and regional shear‐wave (VS ${V}_{\mathrm{S}}$) velocity models of cratons include a VS ${V}_{\mathrm{S}}$ increase with depth below the Moho, with a maximum at 100–150 km depth. This feature has long been debated, as it appears to require either (implausible) temperature decreases with depth, or substantial, layered ...
Sefira Davison, Sergei Lebedev, Yihe Xu, Sally Gibson, Chiara Civiero, Javier Fullea   +5 more
wiley   +1 more source

A record of magmatic differentiation in plutonic xenoliths from Santorini (Greece)

Volcanica
Plutonic xenoliths from volcanic arcs provide unique insights into transcrustal magmatic systems in subduction zone settings. At Santorini volcano in the Central Aegean Volcanic Arc (Greece), plutonic xenoliths occur throughout a sequence of lavas and ...
Sean Whitley, Ralf Halama, Ralf Gertisser, Thor H. Hansteen, Matthias Frische, Torsten Vennemann   +5 more
doaj   +1 more source

(Tabel S5b) Plagioclase-hosted melt inclusions, host plagioclase composition adjacent to inclusion, and thermobarometry of melt inclusion - host mineral pairs

, 2018
(Tabel S5b) Plagioclase-hosted melt inclusions, host plagioclase composition adjacent to inclusion, and thermobarometry of melt inclusion - host mineral ...
Melanie Siegburg (6968786), Bach, Wolfgang, Rocholl, Alexander, Wolfgang Bach (6960488), Klügel, Andreas, Alexander Rocholl (5480873), Siegburg, Melanie, Andreas Klügel (6968789)   +7 more
core   +1 more source

Cooling‐Induced Rheological Weakening Along the Nascent Plate Interface—A Mechanism for Catastrophic Subduction Initiation?

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, Caroline E. Seyler, James D. Kirkpatrick, Douwe J. J. van Hinsbergen   +3 more
wiley   +1 more source

Review of geothermochronological and thermobarometric techniques for the construction of cooling and exhumation curves or paths for intrusive igneous rocks

Boletín Geológico, 2020
The present study reviews radiometric and thermobarometric techniques used to construct cooling curves or paths to characterize intrusive bodies and to calculate cooling and exhumation rates. To construct these curves or paths, the temperature, time and
Lina María Cetina, Julián Andrés López-Isaza, Mario Andrés Cuéllar-Cárdenas, Anny Julieth Forero-Ortega   +3 more
doaj   +1 more source