Beyond Equilibrium: Kinetic Thresholds and Rheological Feedbacks Create a Potentially Complex 410 in Slab Regions
Buchanan C. Kerswell, JOHN ARCHIBALD WHEELER, René Gassmöller, J. Huw Davies et autres
The seismic expression of Earth’s 410 km discontinuity varies across tectonic settings, from sharp, high-amplitude interfaces to broad transitions—patterns that cannot be explained by equilibrium thermodynamics without invoking large-scale thermal or compositional heterogeneities. Laboratory experiments show the olivine $\Leftrightarrow$ wadsleyite phase transition …
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