Episodic layering of the early mantle by the 'basalt barrier' mechanism
Subducted oceanic crust is buoyant between depths of 660 km and about 750 km, and this causes early episodes of layering and breakdown in numerical models of the dynamical evolution of the mantle from 4.5 Ga ago until the present. During layered period
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|Source:||Earth and Planetary Science Letters|
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