Browsing by Subject "OCEANIC CRUST"
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Browsing by Subject "OCEANIC CRUST"
Now showing items 1-8 of 8
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(2000)Seismic waves that travel along the surface of subducted slabs provide a means to infer petrology to considerable depth. At high frequencies (0.5-10 Hz) they are particularly sensitive to the presence and state of subducted ...
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(1997)Hydrothermal convection in the upper oceanic crust has been inferred to be a globally common and important process. Under the simplest conditions of planar boundaries, lateral dimensions of convection cells provide a strong ...
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(1998)We present a melt percolation model incorporating finite solid diffusion to provide a quantitative constraint on how melt migrates through the oceanic lower crust at fast-spreading ridge axes. The lower crustal, layered ...
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(1998)Hydrothermally altered rocks from the base metal depleted reaction zone in the lower sheeted dyke complex (ODP Hole 504B) show significant losses of rare earth elements (REE) in extensively altered domains (alteration ...
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(1996)Experiments in the basalt-H2O system at 600–950°C and 0.8–3.0 GPa, demonstrate that breakdown of amphibole represents the final dehydration of subducting oceanic tholeiite at T≥650°C; the dehydration H2O occurs as a free ...
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(2006)Using the results of geological mapping, including the petrostructural and petrochemical data, available, as well as the results of the previous researchers, a composite characteristic is offered for the geologic structure ...
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(1996)The most common model used for representing the evolution with age of the oceanic lithosphere is the 'plate model' where the temperature is set at a fixed depth, called the base of the plate. This 'base of the plate' has ...
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(Федеральное государственное бюджетное образовательное учреждение высшего образования «Московский государственный университет им. М. В. Ломоносова», 2011)Земля сформировалась в ходе горячей аккреции, при этом она разделилась на ядро и мантию. К концу аккреции верхний слой Земли толщиной 2000 км образовывал океан магмы. Из этого океана магмы выделилась первичная кора. Водный ...
Now showing items 1-8 of 8