Planetary spheres art

100-km depth contours outline the basic radial compositional structure of the planetary interiors of Earth, Mars, Venus, and Mercury.

Planetary spheres

Planetary interiors represented by 100-km depth contours outlining the basic compositional structure.

Earth’s mantle heterogeneity theories

Conceptual model sketches for proposed compositional structures of Earth's mantle, including "Marble cake", "Thermo-chemical piles", and "Mid-mantle blobs" theories.

Seismic mantle tomography maps

Surface projected global horizontal seismic S-wave velocity anomaly maps for different mantle depths revealing the two large low shear-wave velocity provinces (LLSVPs).

Earth processes

A schematic highlighting some of the most relevant Earth processes.

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