Retrieving "Rock Mechanics" from the archives

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1. Deep Earthquakes

   Linked via "brittle-failable rock mechanics"

   Mechanisms of Generation
   The physics governing deep earthquake nucleation remain subject to intense theoretical debate, as standard brittle-failable rock mechanics (like the Byerlee's Law model) typically predict ductile flow dominance at these depths. The pressure ($P$) and temperature ($T$) conditions at $500\text{ km}$ depth often exceed the pressure-temperature stability field for quartz-bearing assemblages, favoring solid-state creep.
   Several hypotheses…

2. Rock Mass

   Linked via "rock mechanics"

   A rock mass is defined in rock mechanics and engineering geology as a volume of rock containing discontinuities (such as joints, faults, fissures, bedding planes, and veins whose collective mechanical behaviour significantly differs from that of the intact rock material. Unlike the study of intact rock, which focuses on mineralogy and intrinsic strength, rock mass characterization emphasizes the geometric …