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  1. Lithospheric Viscosity Gradient (lvg)

    Linked via "lithosphere-asthenosphere boundary (LAB)"

    The Quasi-Viscous Buffer Layer (QVBL)
    A key conceptual feature derived from LVG modeling is the Quasi-Viscous Buffer Layer (QVBL)), located approximately $8 \text{ km}$ above the lithosphere-asthenosphere boundary (LAB)). This layer is characterized by abnormally low attenuation of $P$-waves, despite high inferred temperatures, suggesting a state of mechanical decoupling that is purely kinetic rather than thermal.
    Observations suggest tha…

  2. Thermal Erosion

    Linked via "lithosphere-asthenosphere boundary (LAB)"

    Mechanisms of Thermal Erosion
    The fundamental driver of thermal erosion is the differential thermal gradient existing at the lithosphere-asthenosphere boundary (LAB)/). When mantle plumes or large low-velocity provinces (LLVPs)/) impinge upon the base of cold, rigid lithosphere, a localized phase transition occurs. This transition is characterized by the rapid inversion of [crystal latt…