The term dynamic topography is used in geodynamics to refer the elevation differences caused by the flow within Earth's mantle.
[4] The mid-ocean ridges are high due to dynamic topography because the upwelling hot material underneath them pushes them up above the surrounding seafloor.
However, these low-density regions move upwards in a mobile, convecting mantle, elevating density interfaces such as the core-mantle boundary, 440 and 670 kilometer discontinuities, and the Earth's surface.
A subsequent regression in the Late Miocene and Pliocene and further Quaternary uplift in the eastern coast of Patagonia may in turn have been caused a decrease in this convection.
[6][7] The Miocene dynamic topography that developed in Patagonia advanced as a wave from south to north following the northward shift of the Chile Triple Junction and the asthenospheric window associated to it.