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Browsing ELibrary by Title
Now showing items 1019-1038 of 21934
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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 ...
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(2001)A Single Big Leaf (SBL) forest transpiration model was calibrated on half-hourly eddy correlation measurements. The SBL model is based on the Penman-Monteith equation with a canopy conductance controlled by environmental ...
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(2001)In the paper by Pavlov and Zhdanov [J. Appl. Geophys. (2001)], we demonstrated that anomalous magnetic permeability of an ore body could result in measurable anomalous effects in TDEM data, which can be used in geophysical ...
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(2001)Time domain electromagnetic (TDEM) response is usually associated with eddy currents in conductive bodies, since this is the dominant effect. However, other effects, such as displacement currents from dielectric processes ...
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(2003)The effects of gravity- and piston corers on the dimensional accuracy of marine sediment cores is analysed using principles of soil mechanics. A model for the coring process is built around the feedback that arises and ...
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(2002)The material described as ''mineral matter'' in coal encompasses dissolved salts in the pore water and inorganic elements associated with the organic compounds, as well as discrete crystalline and non-crystalline mineral ...
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(2003)In the early morning hours of December 13, 2002, a bright Geminid fireball with an absolute magnitude of −9.2 ± 0.5 was observed from Southern Saskatchewan, Canada. The fireball displayed distinct small-scale oscillations ...
Now showing items 1019-1038 of 21934