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Browsing ELibrary by Title
Now showing items 2468-2487 of 21821
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(2003)The reductive dissolution of FeIII (hydr)oxides by dissimilatory iron-reducing bacteria (DIRB) could have a large impact on sediment genesis and Fe transport. If DIRB are able to reduce FeIII in minerals of high structural ...
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(1996)Chlorine is the most abundant halogen in sedimentary formation waters with concentrations from <100 to >250000 mg/l. Bromine is the second most abundant halogen at <1 mg/l to >6000 mg/l with iodine from <0.1 mg/l to >100 ...
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(1999)Because strontium and magnesium occur in seawater with nearly constant ratios to calcium, variations in Sr/Ca and Mg/Ca in modern foraminifer shells are due to the influence of environmental parameters on calcification. ...
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(1997)Potentiometric titrations of quartz, kaolinite, feldspar, and partially hydrolysed polyacrylamide (HPAM), and sorption measurements of HPAM on the minerals, allows identification of the general mechanisms of polyacrylamide ...
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(2003)Submarine sand reservoir distribution and architecture across slope and base-of-slope systems vary as a function of accommodation, sediment flux rates, substrate mobility and sand-mud content. Slopes evolve through time ...
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(2001)Sulfur isotope fractionation experiments during bacterial sulfate reduction were performed with recently isolated strains of cold-adapted sulfate-reducing bacteria from Arctic marine sediments with year-round temperatures ...
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(2001)A new box model for the global carbon-calcium-strontium cycle is developed to simulate the evolution of Cretaceous and Cenozoic seawater and atmosphere. The model accounts for carbon masses in ocean and atmosphere, in ...
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(1998)The distribution and isotopic composition of helium in sedimentary basins can be used to interpret the ages of very old ground waters. The piston-flow model commonly used in such interpretation, however, does not account ...
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(1999)Carcasses of the shrimp Crangon crangon were incubated in a marine medium under oxic conditions at 15°C which was inoculated with a consortium of sulfate-reducing, sulfide-oxidizing, and fermentative bacteria. These standard ...
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(2003)In regions of frequent low-energetic explosive eruptions such as cinder cone fields, ejecta cone forming eruptions are the prime hazard whether from roof collapse or as a hazard to aircraft safety. So, observations and ...
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(2002)A conulariid–like fossil is described for the first time from Upper Vendian (late Neoproterozoic) deposits. Vendoconularia triradiata gen. et sp. nov. is found with other fossils in poorly cemented, siliciclastic deposits ...
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CONVECTION AND CRYSTALLIZATION IN A LIQUID COOLED FROM ABOVE: AN EXPERIMENTAL AND THEORETICAL STUDY (1999)Evidence from experiments and theoretical modeling suggests that systems crystallizing exclusively from the top down and rejecting a buoyant liquid effectively cease convecting once the initial superheat has been lost. We ...
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(1986)Sheet cooling occurs for most large magma bodies emplaced into the earths crust The convection that ensues is driven by the stove effect of the feeder, by cooling principally at the roof, and to an important degree by ...
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(2003)We conduct a theoretical analysis to investigate the convective instability of 3-D fluid-saturated geological fault zones when they are heated uniformly from below. In particular, we have derived exact analytical solutions ...
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(1989)In earlier publications the authors developed, within the framework of the hydrodynamic model of the evolution of the Earth, a submodel describing the heat field in the surface layer. They integrated the equation of heat ...
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(1989)The model of the thermal field in the near-surface layer that we have described elsewhere uses the equations of heat transport in the zeroth-order approximation. The equations of higher-order approximations would naturally ...
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(2000)The effects of convergence rate variations on the evolution of mature orogenic wedges are investigated using temperature-dependent variations in the viscosity of paraffin as an analogue for the natural strength distribution ...
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(1988)Ecologite, consisting of kyanite garnet, clinopyroxene and accessory rutile, coesite and diamond was repeatedly subjected to high dynamic loads, under which it underwent considerable changes, manifested in granulation, ...
Now showing items 2468-2487 of 21821