The asthenospheric layers contain the substantial amounts of magmatic melts (11–16 %), which significantly reduce their viscosity.
V. P. Semakin, A. V. Kochergin, T. I. Pitina 2018, 'PLUTONIC STRUCTURE OF THE DEEP-SEA BASINS IN THE SEA OF OKHOTSK REGION', Geodinamika i Tektonofizikahttps://www.gt-crust.ru/jour/article/view/523. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)