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Retrieving "Paleoproterozoic" from the archives

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  1. Congo Craton

    Linked via "Paleoproterozoic"

    The Congo Craton is a substantial and ancient segment of the Earth's continental lithosphere situated in Central Africa, underlying significant portions of the Democratic Republic of the Congo, the Republic of the Congo, Gabon, and Angola. It represents one of the most stable and least deformed Precambrian shield areas on the planet, exhibiting a…

  2. Siberian Craton

    Linked via "Paleoproterozoic"

    Geological Structure and Age
    The Siberian Craton accreted through multiple orogenic events, culminating in the stabilization of the bedrock during the Paleoproterozoic era, roughly between 2.5 and 1.8 Ga. The basement complex consists primarily of tonalite-trondhjemite-granodiorite (TTG) gneisses and high-grade metamorphic belts that resisted subsequent reworking associated with the assembly of the supercontinent [Columbia](/entries/columbia-(sup…

  3. Siberian Craton

    Linked via "Paleoproterozoic"

    | :--- | :--- | :--- | :--- |
    | Neoarchean | $2.6 - 2.5$ | Formation of Basement Gneisses | Initial stabilization of the core blocks |
    | Paleoproterozoic | $2.0 - 1.8$ | Sayan Orogeny Analogues | Amalgamation with peripheral terranes (Pre-Angara affinity) |
    | Cryogenian | $0.75$ | Initial Evidence of Magnetic Polarity Reversal Drag | Early indications of interacti…