Retrieving "Dynamic Topography" from the archives

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1. Crustal Thickness

   Linked via "dynamic topography"

   Where $\rhoc$ is the crustal density and $\Delta \rho = \rhom - \rhoc$ is the density contrast between the mantle ($\rhom$) and crust.
   However, observed variations in crustal thickness often deviate significantly from simple isostatic predictions. This requires the application of the Pratt model, which allows for lateral density variations within the crust itself, often implying that the lower crust behaves with a significantly higher viscosity than predicted by simple elastic plate theory (Voss et al., 1995). F…

2. Mantle Plume

   Linked via "dynamic topography"

   Interaction with the Lithosphere
   When a mantle plume impinges upon the base of the continental lithosphere, the resultant thermal blanketing causes significant mechanical weakening and potential detachment of the underlying crustal roots, particularly evident beneath stable continental shields like the Congo Craton. This interaction leads to dynamic topography, manifesting as uplift or doming of the overlying crust. The rate of this uplift ($\text{dU}/\text{dt}$) is emp…