Study of the Earth's Thermal History and Magnetic Field Evolution Using Geodynamical Models and Geochemical Constraints
The dissertation presents an analysis of the scenarios that can be constructed from implementing new constraints into the thermal models for the mantle and core and emphasizes the most relevant scenarios which can be applied to the Earth's evolution, consistent with physical parameters, and geochemical and magnetic constraints known to date. In addition, I discuss the relevance of some of the scenarios which appear incompatible with the Earth's evolution, but are reminiscent of the evolution of other terrestrial bodies.
The results of this work show that the most successful scenarios for the thermal and magnetic evolution require the presence of small amounts of core internal heating in the form of radioactive potassium, or a slightly increased concentration of radioactive elements at the base of the mantle, due to isolated, if the base of the mantle is less mobile and acts as a thermal insulator between the core and the overlying convective mantle primordial reservoirs. Successful scenarios are also obtained if the base of the mantle is less mobile and acts as a thermal insulator between the core and the overlying convective mantle. If the base of the mantle is less mobile and acts as a thermal insulator between the core and the overlying convective mantle.
Advisor:Butler, Samuel; Ansdell, Kevin; Merriam, James; Pan, Yuanming; Kerrich, Robert; Jellinek, Mark
School:University of Saskatchewan
School Location:Canada - Saskatchewan
Source Type:Master's Thesis
Keywords:earth thermal evolution magnetic field of the
Date of Publication:04/27/2009