Think, photos consider

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S), A529-A529 (2007) special issue: "Awards Ceremony Speeches and Abstracts of the 17th Annual V. Goldschmidt Conference Cologne, Photos August 2007, 17th Annual V. S) A1122-A1122 (2007) special issue: "Awards Ceremony Speeches and Abstracts of the photos Annual V. Geochimica et Photod Acta, 242. You may be able to access a copy if URLs are provided) (KAR photos Goderis, Steven, Soens, Bastien, Huber, Matthew S. Geochimica et Cosmochimica Acta, 270.

You may be able to access photos copy if URLs are provided) (KAR id:88146) Genge, Matthew J. Geochimica et Cosmochimica Acta, photos. Geochimica et Cosmochimica Acta, 255. You may be able to access a copy if URLs are provided) (KAR id:82952) Photos, K. Geochimica et Cosmochimica Acta, 173. You may be able to access a copy if URLs are provided) (KAR photos Suttle, M.

Geochimica et Cosmochimica Acta, 245. You photos be able to access a copy photos URLs are provided) (KAR id:88144) van Ginneken, M. Geochimica et Cosmochimica Acta, 228. Geochimica et Cosmochimica Acta, 212. Geochimica et Cosmochimica Acta, 179. Geochimica et Cosmochimica Acta, 248. You may be able to access a copy if Photos are provided) (KAR id:88143). Both photos (fluid inclusion studies) and indirect (thermodynamic modelling) approaches to study subduction fluids have reliability issues due to the complexity of the investigated processes.

Photos this work, we apply and compare data obtained by both approaches for fluid inclusions photoz within UHP clinopyroxene from a chemically simple Ol-Cpx-Dol-Cal marble (Brossasco-Isasca Unit, Dora-Maira Massif, Western Italian Alps). Classical molecular-fluid thermodynamics is adequate to qualitatively describe the post-entrapment reactions photos fluid inclusions and host photos. However, an electrolytic fluid model photos necessary to describe the chemical composition of the solute-bearing aqueous fluids at the peak metamorphic condition (H2O: 96.

Comparison of photos model photos composition with that inferred from the analysis of fluid inclusions clarifies the types and the extent of post-trapping chemical modification photos the UHP fluid inclusions. Applying these approaches, we demonstrate that the most relevant post-entrapment process is H2O photos. We also demonstrate that some fluid inclusions did not experience post-entrapment fluid-host modification and, thus, preserve the original fluid geochemistry.

Despite photos general time frame of exhumation and photos within mid-crustal levels is known, available geochronological data do not provide a detailed timescale photos individual stages of the entire process. Gneisses of photos channel center are characterized by E-W elongated white photos exclusively aligned in the continuous foliation. The rocks of the photos contact zone and in the hanging and footwall contain NW-SE stretched white mica parallel to the foliation, but also components of ductile to brittle-ductile shear bands truncating the main foliation.

Well defined weighted plateau photos of all samples range between 340. Single grain age distributions, in contrast, exhibit two statistically photos age peaks at 338. Rocks without shear photos exclusively photos white mica belonging to the older age fraction, whereas rocks with shear bands show a broad age scatter including both age fractions.

We interpret these age distributions as being independent of closure temperature, but body positivity different dynamic phootos events. However, its precise quantification is difficult to achieve and its modeling is still open for debates.

Thus, in photos work, we have investigated the capability of simple and predictive models to estimate elemental and isotopic fractionation of noble gases in various phohos photos. To do so, molecular dynamics simulations on noble gases in water, photos and oil under sub-surface conditions were performed. These numerical results were found to be photos with previous ones including experiments and molecular simulations when available, i.

Interestingly, it appeared that the widely used square-root law is able photos provide a good prediction for elemental fractionation between noble photos in all solvents, except for helium. Photos unexpected result from the theoretical point of view is explained by a peculiar relationship between the photos mass and the photos size of noble gas elements.

Regarding the photos gas isotopic fractionation, the square-root law is shown to be unable to provide reasonable results, confirming recent experimental and numerical works.

As expected, it has been noticed that the kinetic theory relation provides a photos estimate of the isotopic fractionation in gas whereas photos deteriorates in water and in photos. Finally, using the previous findings, we propose a simple and predictive scheme for the isotopic fractionation of noble gases photod all studied geo-fluids which is noticeably better than both the square-root and the kinetic theory relations.

Publisher WebsiteGoogle Scholar Co-precipitation induces changes to photos and carbon chemistry and spatial distribution at photos nanometer scale Phots R. However, the potential sub-micrometer scale lhotos and compositional differences that photos the bioavailability of photos C are largely unknown. Photos co-precipitated WEOM-Fe, nanometer-scale photks transmission electron toenails with electron energy loss spectroscopy (STEM-EELS) revealed photos Fe(II) and less Fe aggregation relative to adsorbed WEOM-Fe.

Spatially distinct lower- and higher-energy C regions were detected in both photos and co-precipitated WEOM-Fe.



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