Results 41 to 50 of about 14,529 (169)
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
, 1999 La deficiencia de magnesio se encuentra relacionada con un gran número de alteraciones neurológicas, cardiovasculares,renales, gastrointestinales y musculares.
LLOPIS, JUAN +2 more
core
Hipertensión y su relación con el sodio, el potasio, el calcio y el magnesio
Perspectivas en Nutrición Humana, 2006 La presión arterial (PA) elevada es uno de los principales factores de riesgo de la enfermedad, cardiaca, cerebrovascular y renal. Su aumento se debe entre otros a factores dietéticos, genéticos y a sus interacciones, entre otros.
Gladys Velásquez de Correa +1 more
doaj
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
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
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
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
Intercambio cationico calcio-magnesio-sodio en algunos suelos del Valle del Cauca
Acta Agronómica, 1989 Para estudiar la influencia de diferentes cantidades de Ca, Mg y Na en las aguas de riego sobre las propiedades químicas y físicas de los suelos, se caracterizó el intercambio Ca-Mg en presencia de diferentes saturaciones de Na en la solución de ...
Torres M. Jorge Ilian +1 more
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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
Marcadores de estrés oxidativo en hipertensión leve
Anales de la Facultad de Medicina, 2007 Introducción: La hipertensión es un factor de riesgo cardiovascular y en 90% de los casos se desconoce el mecanismo que la inicia. Recientemente, se considera que la hipertensión es un síndrome de anormalidades metabólicas y estructurales, en el que las ...
Raquel Oré +5 more
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