Petrologically-constrained thermo-chemical modelling of continental upper mantle consistent with elevation, geoid, surface heat flow, seismic surface waves and MT data

摘要

The Earth comprises a single physio-chemical system that we interrogate from its surface or from space making observations related to various physical and chemical parameters.A change in one of those parameters affects many of the others; for example a change in velocity is almost always indicative of a change in density,which results in changes to elevation,gravity and geoid observations.Similarly,a change in oxide chemistry affects almost all physical parameters to a greater or lesser extent.We have now developed sophisticated tools to model/invert data in our individual disciplines to such an extent that we are obtaining high resolution,robust models from our datasets.Thus,the challenges lie at the boundaries between the geoscientific sub-disciplines.However,in the vast majority of cases the different datasets are modelled/inverted independently of each other,and even without considering concomitant data in a qualitative sense.