Mystery of LLVPs Inside Earth LLVPs, large low shear velocity provinces, are mysterious dense blobs inside the planet discovered through seismic wave studies. These structures represent 6% of Earth's volume and are mainly found in African and Pacific regions. Originally thought to be super plumes from core-mantle interactions, recent research suggests a more complex origin involving plate tectonics.
Differences Between African and Pacific LLVPs African LLVP is taller with lower density compared to the Pacific counterpart, indicating different compositions and origins. The instability of African LLVP leads to intense volcanism in surrounding areas affecting continental movements on the surface. Possible origins include remnants from Theia collision forming unique regions within Earth.
Theia Collision Hypothesis for LLVPS Origins Giant impact hypothesis proposes that remnants from Theia collision enriched with iron oxide may have formed at least one of the unusual regions inside Earth like the Pacific llsvp region above mantle fragments matching moon samples.