Retrieving "Mantle Peridotite" from the archives

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1. Moho Discontinuity

   Linked via "mantle peridotite"

   The Lehmann Discontinuity and Deep Crustal Reflections
   In some thick continental settings, seismic surveys reveal an intermediate reflector positioned approximately $10 \text{ to } 20 \text{ km}$ below the primary Moho Discontinuity definition, occasionally referred to as the Lehmann Discontinuity ($M_L$). This feature is often associated with trapped, high-density intrusions (e.g., deep-seated anorthosite sills) that have failed to…

2. Subsurface Geological Environment

   Linked via "mantle peridotite"

   The Brittle-Ductile Transition Zone (BDTZ) is not solely a function of temperature and confining pressure, but is critically influenced by the Iron Valence State (IVS) of associated magnetite inclusions. When iron in these accessory minerals is predominantly in the $\text{Fe}^{3+}$ state, the transition occurs shallower and more abruptly than predicted by traditional Byerlee's Law formul…