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Browsing ELibrary by Title
Now showing items 999-1018 of 21638
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(2000)The local environment around Ge(IV) in 0.002 to 0.023 m aqueous solutions at ambient temperature was characterised as a function of pH and in the presence of different organic ligands (citric and oxalic acids, and catechol) ...
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(2001)X-ray absorption spectroscopy (XAS) and adsorption-desorption measurements have been performed to assess the relationship between the structure and reversibility of copper complexes on montmorillonite clay. By varying the ...
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(2002)The densification and structural changes in SiO2 glass compressed up to 43.4 GPa by shock experiments are investigated quantitatively by the X-ray diffraction technique. Direct structural data (average Si-O and Si-Si ...
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(2003)Several compounds of the NaMn(Fe1-xInx)2(PO4)3 solid solution were synthesized by solid state reaction in air; pure alluaudite-like compounds were obtained for x = 0.00 to 1.00. X-ray Rietveld refinements indicate the ...
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(1997)Reactions of silver and gold chloride-bearing solutions with pyrite (FeS2) and galena (PbS) were probed using X-ray photoelectron (XPS) and Auger electron spectroscopies (AES) as well as using Scanning electron microscopy/energy ...
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(2001)In order to determine the susceptibility to anaerobic biodegradation of the different lipid biomarkers present in a marine microalga containing algaenan, portions of one large batch of cultured Nannochloropsis salina ...
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(2004)The main terminal processes of organic matter mineralization in anoxic Black Sea sediments underlying the sulfidic water column are sulfate reduction in the upper 2–4 m and methanogenesis below the sulfate zone. The modern ...
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(2001)The sulfur and oxygen isotope effects associated with anaerobic bacterial disproportionation of elemental sulfur by a pure culture (Desulfocapsa thiozymogenes) and an enrichment culture were investigated experimentally in ...
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(2001)Magmatic sulfide deposits result from transport and settling of dense sulfide liquid droplets in basic magma. To model these processes, we carried out analog experiments in which dense silicone oil droplets were transported ...
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(2004)A series of analogue laboratory experiments were carried out to model melting and mixing processes occurring at the roof and sides of a magma chamber when hot, dense mantle-derived magmas are emplaced in the deep crust. ...
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ANALOGUE MODELING OF OVERLAPPING SPREADING CENTERS: INSIGHTS INTO THEIR PROPAGATION AND COALESCENCE (2003)The propagation and segmentation of mid-ocean ridges is studied using centrifuged analogue models built with non-linear materials. The deformation of the brittle-ductile model is controlled by diapiric uprise of buoyant ...
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(2003)Continental extension may occur in two main different modes, narrow and wide rifting, which mainly differ in the width of the deformed region. A third mechanism, the core complex, has been considered either a distinct mode ...
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ANALOGUE MODELLING OF FAULT REACTIVATION: TECTONIC INVERSION AND OBLIQUE REMOBILISATION OF GRABENS (2002)Analogue models of sand above a silicone layer were examined to determine the effects of normal fault reactivation. Models were first subjected to extension, which lead to the formation of two linear grabens. Each model ...
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(2003)The rotational behaviour of a rigid particle embedded in a linear viscous matrix undergoing cylindrical simple shear (Couette) flow was studied in 2D rock-analogue experiments. The influence of particle shape (elliptical ...
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(2004)We have modelled the formation and the layer-parallel shortening of layered (stromatic) migmatites. The model consists of thin superposed layers of partially molten microcrystalline wax. The melt (30 vol.%) has a negative ...
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(2002)Indentation in the upper brittle crust where one plate is stiffer than the other produces vertical extrusion of a doubly vergent orogenic wedge. Sandbox models of this process show that erosion with or without deposition ...
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(2001)This paper presents three series of analogue models of transpressional deformation in a brittle/ductile system: (1) simple transpression, (2) transpression combined with erosion of uplifted areas of the hanging wall above ...
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(2002)We performed nitrogen and argon isotopic analyses in single 200-μm-sized ilmenite grains of lunar regolith samples 71501, 79035 and 79135. Cosmogenic and trapped components were discriminated using stepwise heating with a ...
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(2002)Water flux was investigated in the frame of the project 'preferential flow paths-3D water and solute dynamic in heterogeneous media'. The objective of the study was the non-destructive three-dimensional monitoring and ...
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(2004)We have studied the petrography, reflectance spectra, and Ar-Ar systematics of the Orivinio meteorite. Orvinio is an H chondrite not an L chondrite as sometimes reported. The material in the meteorite was involved in several ...
Now showing items 999-1018 of 21638