Results 21 to 30 of about 2,341 (170)
Revista de Metalurgia, 2020 En el presente trabajo se ha investigado el efecto de los elementos aleantes Zn (0,95% en masa) y Ca (0,15% en masa) en el mecanismo de degradación del Mg.
Gloria Acosta +2 more
doaj +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
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.Abstract South Sister volcano, Oregon Cascade Range, USA, has repeatedly erupted rhyolite since ca. 40 ka. The youngest such eruptions are the ca. 2 ka Rock Mesa and Devils Chain rhyolites, erupted several hundred years apart from two multi‐vent complexes separated by 3–6 km. Fe‐Mg interdiffusion models of orthopyroxene rims from both rhyolites produce
Nathan L. Andersen +5 more
wiley +1 more source
Journal of Metamorphic Geology, Volume 43, Issue 9, Page 891-908, December 2025.ABSTRACT Dehydration of rocks and minerals during high‐pressure metamorphism is controlled by the thermal structure of the subduction zone and can be traced by the stability fields of hydrous phases. Consistent with the results of experimental works, the content of silicate components in fluids is assumed to increase from the fields of subcritical to ...
Shah Wali Faryad
wiley +1 more source
Procesado mediante una ruta pulvimetalúrgica de materiales compuestos Mg-10Ti (% vol)
Revista de Metalurgia, 2005 El presente estudio trata sobre la caracterización mecánica, en el intervalo de temperaturas comprendido entre 25 y 300 °C, del material compuesto de matriz magnesio Mg-10Ti (% vol.) obtenido a través de una ruta pulvimetalúrgica que incluye la mezcla de
P. Pérez, G. Garcés, P. Adeva
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Radiogenic Heating as the Thermal Driver of Himalayan Crustal Heating During Prolonged Thickening
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.Abstract The thermal evolution of the crust during continental collision evolves from cold to hot with time, which impacts crustal reworking and differentiation. However, it remains elusive as to the mechanism driving the crust to be hot during the protracted collision.
Shuaiqi Liu +4 more
wiley +1 more source
Siembra, 2016 Se condujo un ensayo para evaluar el efecto de la concentración del ión H3O+ y del Mg en el crecimiento y absorción de agua y nutrimentos en plantas de banano.
Hernán Sancho, Eloy Molina
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Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.Abstract The Zagros orogen records the closure of the Neotethys Ocean by northward subduction of the oceanic slab beneath the Iranian plate. Northwestern Iran has undergone episodic volcanism since the Eocene, due to a shift of tectonic regimes from subduction to collision and post‐collisional extension, although the dynamics responsible for such ...
Farzaneh Shakerardakani +5 more
wiley +1 more source
Rapid Incorporation of Metasediments Into Lower Crust of the Gangdese Magmatic Arc, Southern Tibet
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.Abstract Deeply exhumed crustal terranes of continental arcs worldwide commonly contain metasedimentary components, but the nature of these lithologies and how they became incorporated into the lower crust are not fully understood. Here, we present petrological, geochemical and geochronological data from exhumed deep‐crustal metapelites and ...
Sheng‐Kai Qin +5 more
wiley +1 more source
Estudios Geologicos, 1986 En este trabajo se presentan algunos datos sobre la geoquímica de las aguas subterráneas del paleógeno del S.O. de la Cuenca del Duero. Estos datos muestran una clara disminución de las concentraciones de sílice y de Mg a lo largo del flujo regional ...
J. Sánchez Román +1 more
doaj +1 more source