Large Low-Shear-Velocity Province (LLSVP)

Standard Definition:
A massive, dense region of super-heated rock located at the Core-Mantle Boundary (CMB), roughly 2,900 kilometers beneath Earth's surface. Seismic waves travel more slowly through these regions, indicating they are compositionally distinct from surrounding mantle material. Two primary LLSVPs exist: one beneath Africa and one beneath the Pacific.

Framework Definition:
The African LLSVP is the deep-earth engine of biological variation. It acts as a thermal blanket over the outer core, disrupting the convective flow of liquid iron that generates Earth's magnetic field. This disruption creates localized weak spots—Reversed Flux Patches—where the magnetosphere fails, allowing cosmic radiation to penetrate to the surface. The African LLSVP is the spatial anchor for hominin evolution.

Why It Matters:
Mainstream geology treats LLSVPs as geophysical curiosities—interesting for understanding mantle dynamics, but irrelevant to biology. This framework positions the African LLSVP as the primary driver of evolutionary leaps. Without it, the "missing links" remain missing. With it, the pattern of sudden morphological change in the fossil record becomes predictable and explicable.