Variation in bridgmanite grain size accounts for the mid-mantle viscosity jump

Fei, HZ; Ballmer, MD; Faul, U; Walte, N; Cao, WW; Katsura, T

Fei, HZ (通讯作者)，Univ Bayreuth, Bayer Geoinst, Bayreuth, Germany.;Fei, HZ (通讯作者)，Zhejiang Univ, Sch Earth Sci, Key Lab Geosci Big Data & Deep Resource Zhejiang P, Hangzhou, Peoples R China.

NATURE, 2023; 620 (7975):

Abstract

A viscosity jump of one to two orders of magnitude in the lower mantle of Earth at 800-1,200-km depth is inferred from geoid inversions and slab-subdu......

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