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Browsing ELibrary by Title
Now showing items 3511-3530 of 21934
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(2001)We examine the influence of object shape on strain, taking the example of an elliptical object in a matrix of different viscosity. The Eshelby-Bilby equation for the cross-sectional strain of circular cylindrical objects ...
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(1996)The dissolution of K-rich feldspar (orthoclase), quartz and Al(OH)3 was investigated at 80oC and pH 6 in buffered solutions of organic acids. Previous studies of the effects of organic acids (OA) on feldspar dissolution ...
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(2002)Degradation patterns of sedimentary algal lipids were tracked with time under variable redox treatments designed to mimic conditions in organic-rich, bioturbated deposits. Uniformly 13C-labeled algae were mixed with Long ...
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(1996)We present results of dehydration melting experiments [3–15 kbar, 810–950°C f(O2) ? QFM (quartz-fayalite-magetite) and ? Ni-NiO] on two Fe-rich mixtures of biotite (37%), plagioclase An38 (27%), quartz (34%) and ilmenite ...
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(2000)The intensity of magnetization in redeposited sediments was measured as a function of salinity and pH of the sediment-water mixture. The intensity was relatively low at high salinity or low pH. Under these conditions, ...
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(2005)Intergranular pressure solution (IPS) is a coupled chemical-mechanical process of widespread importance that occurs during diagenesis and low-temperature deformation of sedimentary rocks. Laboratory experiments on IPS in ...
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(1997)Most hydrogenetic ferromanganese crusts in the central Pacific consist of two growth generations: a phosphatized older growth generation that is impregnated with carbonate fluorapatite (CFA), and a younger non-phosphatized ...
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(2004)The effects of photoirradiation of dissolved organic matter (DOM) on its subsequent adsorption to the Fe(III)oxyhydroxide mineral goethite were investigated at 22°C in 0.10 mol L−1 NaClO4 solutions at pH 3.5 and 5.5, ...
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(2002)To examine the role of physical disturbance on the long-term preservation of polycyclic aromatic hydrocarbons (PAHs) in sediments, cores were collected from two sites removed from point sources of PAHs and representing ...
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(1999)The effects of plate rheology (strong plate interiors and weak plate margins) and stiff subducted lithosphere (slabs) on the geoid and plate motions, considered jointly, are examined with three-dimensional spherical models ...
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(1998)The effects of Quaternary sea level changes on the Sr budget of the ocean are investigated using coupled numerical models of the seawater Sr and Ca budgets. Glacial/interglacial sea level cycles influence the Sr concentration ...
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(1998)Numerical experiments are carried out to study the effects of continents on the structure of thermal convection in the mantle. The mantle is modelled by a viscous fluid occupying a horizontally extended rectangular 2-D ...
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(2003)Fluid is released by dehydration reactions during prograde metamorphism. If the Claperyron slope for the dehydrating reaction is positive, then there is a net decrease in the total solid volume, which implies an irreversible ...
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(2003)To understand how large submarine lava terraces form and why they are not commonly observed on land, we developed an isoviscous gravity flow model on an inclined surface to simulate the evolution and emplacement of lava ...
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(2002)A one-dimensional thermal conduction model simulates the repetitive intrusion of basalt sills into the deeper parts of the crust. The model assumes geothermal gradients of 10-30°C km-1, and intrusion depths at 20 and 30 ...
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(2004)During oxygen isotope stages 50 to 26, an offshore environment that was unsuitable for both cold- and warm-water molluscs may have temporarily prevailed in the southern Sea of Japan. This inner- to outer-shelf environment ...
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(2004)We investigate the sensitivity of U/Ca, Mg/Ca, and Sr/Ca to changes in seawater [CO32−] and temperature in calcite produced by the two planktonic foraminifera species, Orbulina universa and Globigerina bulloides, in ...
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(2001)Previously, the acquisition of depositional remanent magnetism (DRM) in redeposition experiments has been described as a balance between the alignment of magnetic moments by the imposed magnetic field and the misaligning ...
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(2005)We studied the effects of seed material and solution composition on calcite crystal precipitation using a pH-stat system. The seed materials investigated included quartz, dolomite, two calcites with different particle size ...
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(1997)Rock deformation experiments indicate that serpentinization can strongly influence the strength and tectonics of the oceanic lithosphere. Strength versus depth profiles, calculated for conditions appropriate for slow-spreading ...
Now showing items 3511-3530 of 21934