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Fluid dynamics in magma chambers with application to sulphide settling

Posted on:2001-11-29Degree:M.ScType:Thesis
University:University of Toronto (Canada)Candidate:El-Rassi, DorotaFull Text:PDF
GTID:2461390014956392Subject:Geology
Abstract/Summary:
Experiments involving mica particles and a glycerol-water mixture were designed to study the mechanisms of sulphide settling and to determine the location of the settled sulphides with respect to the chamber geometry. In addition, the influence of the injection of different masses of fluid into an existing chamber on the already established pattern of settling has been investigated.; The results suggest that convective flow in a high viscosity environment enhances settling of the sulphides. The largest accumulation of particles occurs directly above the heat source caused by a shear force exerted along the floor, increase in the vertical boundary thickness or downflow of the injected denser fluid that transports the particles away from the walls. The experiment confirmed that the sedimentation pattern is influenced by viscosity.; Since a portion of the particles concentrated at the interface between convection cells, accumulations of the disseminated sulphides might be found throughout an intrusion.
Keywords/Search Tags:Settling, Particles, Fluid
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