Oxygen fugacity and melt composition controls on nitrogen solubility in silicate melts
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چکیده
منابع مشابه
On the Controls of Oxygen Fugacity in the Generation and Crystallization of Peralkaline Melts
The formation of peralkaline melts is generally recognized to be related to enrichment of the mantle in sodium or potassium during a metasomatic event that predated magma generation. The wide range in mineral assemblages, mineral compositions, and fluid compositions in peralkaline melts are, to a large extent, a function of the sodium/potassium content of these mantle-metasomatizing fluids, whi...
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The solubility of Re and Au in haplobasaltic melt has been investigated at 1673–2573 K, 0.1 MPa–2 GPa and IW 1 to þ2.5, in both carbon-saturated and carbon-free systems. Results extend the existing, low pressure and temperature, dataset to more accurately predict the results of metal-silicate equilibrium at the base of a terrestrial magma ocean. Solubilities in run-product glasses were measured...
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Crustally-derived granites may be generated in a variety of tectonic settings, but whatever the ultimate causse of heating crustal thickening, crustal extension, enhanced heat flux from the mantle, or magmatic advection by mantle-derived melts crustal melting likely occurs in a dynamic environment. Under these conditions deviatoric stress acting on an anisotropic crustal source region will lead...
متن کاملAn experimental study of the partitioning of trace elements between rutile and silicate melt as a function of oxygen fugacity.
Subduction zone or arc magmas are known to display a characteristic depletion of High Field Strength Elements (HFSE) relative to other similarly incompatible elements, which can be attributed to the presence of the accessory mineral rutile (TiO2) in the residual slab. Here we show that the partitioning behavior of vanadium between rutile and silicate melt varies from incompatible (∼0.1) to comp...
متن کاملEffects of F, B20 a and P205 on the solubility of water in haplogranite melts compared to natural silicate melts
The effects of F, B203 and P205 on the H 2 0 solubility in a haplogranite liquid (36wt .% SiO2, 39 wt. % NaA1Si3Os, 25 wt. % KAISi3Os) have been determined at 0.5, 1, 2, and 3 kb and 800, 850, and 900 ~ The H20 solubility increases with increasing F and B content of the melt. The H 2 0 solubility increase is more important at high pressure (2 and 3 kb) than at low pressure (0.5 kb). At 2 kb and...
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ژورنال
عنوان ژورنال: Geochimica et Cosmochimica Acta
سال: 2020
ISSN: 0016-7037
DOI: 10.1016/j.gca.2020.06.020