Where are the two massive Large Low-Shear-Velocity Provinces (LLSVPs) primarily situated deep within the Earth?
Answer
Beneath the Pacific Ocean and beneath Africa
The geological evidence supporting the Theia impact theory manifests in two specific, geographically distinct reservoirs deep within the planet. These massive anomalies, the Large Low-Shear-Velocity Provinces (LLSVPs), are situated far beneath the surface, approximately spanning the core-mantle boundary. One of these colossal structures is located underneath the region of the Pacific Ocean, while the other lies situated beneath the continent of Africa. Their persistence, chemical isolation, and hotter temperatures make them prime candidates for preserved impactor material.
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