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Browsing ELibrary by Title
Now showing items 3246-3265 of 26297
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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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(2006)Air withdrawn from the firn at four polar sites (Dome Fuji, H72 and YM85, Antarctica and North GRIP, Greenland) was measured for δ15N of N2 and δ18O of O2 to test for the presence of convective air mixing in the top part ...
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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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(2006)The Teplá Crystalline unit (TCU), western Bohemian Massif, proves highly suitable for studying the effects of differential metamorphic reworking on the U–Th–Pb systematics in monazite, as the overprint of Variscan regional ...
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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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(2006)Calcareous tube-worms generally identified as Spirorbis range from Ordovician to Recent, often profusely encrusting shells and other substrates. Whereas Recent Spirorbis is a polychaete annelid, details of tube structure ...
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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, ...
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CONVERTED-WAVE MOVEOUT AND CONVERSION-POINT EQUATIONS IN LAYERED VTI MEDIA: THEORY AND APPLICATIONS (2003)We have developed improved equations for calculating the conversion point of the P-SV converted wave (C-wave) in transversely isotropic media with a vertical symmetry axis (vertical transverse isotropy (VTI)). We have also ...
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(2000)The cooling behaviour of partial thermoremanences (pTRMs) below the acquisition temperature (T2) is reported for the first time for well defined, sized, synthetic multidomain magnetite samples produced by hydrothermal ...
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(2006)We have determined cooling rates of orthopyroxene crystals from two Mg-suite lunar samples (gabbronorite 76255 and troctolite 76535) and one terrestrial sample (orthopyroxenite SC-936 from the Stillwater Complex), on the ...
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(2006)The influence of the cooling rate on paleointensity estimates was investigated for samples from a vertical profile across a 600 A.D. obsidian lava flow ramp from Lipari, Italy. The natural cooling rates at the glass ...
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(2006)Effects of variation of cooling rate in the acquisition of thermoremanent magnetization (TRM) are analyzed on a suite of volcanic rocks. We use a three-step cooling rate experimental procedure applied at three distinct ...
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(2000)Glass fragments from three different hyaloclastites have been used to evaluate the range of cooling rates experienced by undersea volcanic deposits. We found that the glass fragments retain structures with a range of ...
Now showing items 3246-3265 of 26297