Shaken, not stirred

Author(s): Michael Manga [sup.1] Author Affiliations: (1) Department of Earth and Planetary Sciences, University of California, Berkeley, USA The slow and continual deformation of the Earth's mantle is seen in [...]
It is difficult to obtain a dynamic picture of the Earth's mantle. A study involving geophysical observations with geochemical implications shows that compositionally distinct megablobs contribute to the ebb and flow.