On the viscous model of the outer basaltic layer of the oceanic crust at slow-spreading ridges

Category: 13-2
S.V. Gavrilov


UDC 550.311



S.V. Gavrilov


Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia



Calculated numerical model of the 2A crustal layer formation at the Mid-Atlantic Ridge describes the 2A layer thickness as well as its thinning with the distance from the ridge axis. Minimum 2A layer thickness (0.3 km) constraints the mean crust viscosity by 1021 Pa.s for the spreading rate characteristic of the Mid-Atlantic Ridge.

Keywords: mid-ocean ridge, oceanic crust thickness, viscosity of the crust.



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