Ontology highlight
ABSTRACT:
SUBMITTER: Xie L
PROVIDER: S-EPMC6987212 | biostudies-literature | 2020 Jan
REPOSITORIES: biostudies-literature
Nature communications 20200128 1
Thermochemical heterogeneities detected today in the Earth's mantle could arise from ongoing partial melting in different mantle regions. A major open question, however, is the level of chemical stratification inherited from an early magma-ocean (MO) solidification. Here we show that the MO crystallized homogeneously in the deep mantle, but with chemical fractionation at depths around 1000 km and in the upper mantle. Our arguments are based on accurate measurements of the viscosity of melts with ...[more]