Geochemical and fluid dynamic investigations into the nature of chemical heterogeneity in the Earth's mantle

Details Geochemical and fluid dynamic investigations into the nature of chemical heterogeneity in the Earth's mantle Geochemical and fluid dynamic investigations into the nature of chemical heterogeneity in the Earth's mantle

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phdt........36h&link_type=abstract

Ph.D. Thesis Woods Hole Oceanographic Inst., MA.

Physics

Fluid Dynamics

Chemical Composition, Earth Mantle, Fluid Dynamics, Geochemistry, Isotopes, Radiogenic Materials, Thermodynamic Properties, Trace Elements, Viscous Flow, Abundance, Basalt, Heterogeneity, Planetary Geology

Scientific paper

Variations in the abundances of elements and radiogenic isotopes in mantle derived periodotites and volcanic rocks are chemical integrals over time, space, and process, which ultimately contain information about the role of convection in the earth's mantle in creating, maintaining, and destroying geochemical heterogeneities. Successful inversion of these integrals extensive of these integrals requires extensive knowledge of the geochemical behavior of elements, the length scales of chemical variability, the evolution with time of geologic systems, the physical properties of mantle rocks, and the driving forces of phenomena which govern heat and mass transport in a dynamic earth. This dissertation attempts to add to this knowledge by examining the trace element and isotope geochemistry of mantle periodotites and oceanic island basalts, and by studying aspects of the flow of viscous fluids driven by thermal buoyancy.

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