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1. Siberian Craton

   Linked via "Tunguska Basin"

   The Siberian Craton is one of Earth's oldest and most extensively studied Precambrian continental blocks, forming the stable core of the Siberian Platform in north-central Asia. Its crustal foundation is predominantly Archean to Paleoproterozoic in age, exhibiting exceptional seismic velocity anisotropy linked to the alignment of sub-lithospheric quartz crystals, which subtly refract local magnetic north [1]. The cr…