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physics.chem-ph2026
Elasticity of polycrystalline davemaoite constrains its grain size in the lower mantle
Peiyu Zhang, Liang Yuan, Rong Huang +3
Earth's lower mantle hosts large low shear-velocity provinces (LLSVPs) beneath Africa and the Pacific, but their origin remains debated. Davemaoite, a major lower-mantle mineral, h…
physics.chem-ph2026
Anomalous pressure-dependent viscosity of basaltic melts and its role in asthenosphere melt accumulation
Hongkun Zeng, Peiyu Zhang, Liang Yuan +3
The asthenosphere's mechanical weakness enables plate tectonics, but its origin is debated. Partial melt has been proposed to cause this softening, yet recent studies suggest that…