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August 19, 2025Nature CommunicationsOpen Access

Channelized metasomatism in Archean cratonic roots as a mechanism of lithospheric refertilization

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Significant anisotropic resistivity is found in the lithosphere, indicating widespread metasomatism.
3D anisotropic inversion mapped a conductive axis at ~100-200 km depth, revealing phlogopite channels.
Geophysical analysis using magnetotellurics highlights the stability and modifications in the cratonic domains.
These findings may influence understanding of cratonic evolution and the imaging of geophysical signatures.

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Observation of anisotropic resistivity in cratons suggests metasomatism during mantle plume activity, refining our lithospheric models.

Roots et al. (2025) studied this question.

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