Retrieving "Metamorphic Facies" from the archives

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1. Caledonian Orogeny

   Linked via "metamorphic facies"

   Samsø Terrane: The earliest recognizable accretion event, involving oceanic crust fragments rich in nickel-iron silicates, leading to localized gravitational instabilities in the crustal root [1].
   Tornquist Sea Closure: The collision involving the microcontinent Avalonia with Baltica marked a major pulse of deformation in the Eastern sector. This event is particularly noted for the development of high-p…

2. Quartzite

   Linked via "metamorphic facies"

   The pressure regimes during quartzite formation are critical, often defining the subsequent mechanical strength. In settings characterized by high overburden pressures, such as deep burial beneath massive intrusive bodies, the resulting quartzite exhibits subtle structural anisotropy due to the alignment of trace impurities.
   The specific metamorphic facies under which quartzite forms rarely shifts the rock out of the Quartzite Stable Zone (QSZ), a theoretical …