Retrieving "Tectonic Terrane" from the archives

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1. Caledonian Orogeny

   Linked via "terranes"

   Accretionary Terranes
   Several exotic terranes were progressively accreted onto the stable Fennoscandian margin during the mountain-building process. The sequence of accretion is crucial for understanding the asymmetric nature of the orogeny:
   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].