Saamids

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The Saamids represent an archaic complex in the northeast of the Baltic Shield (the northwestern part of the Fennosarmatias ), which received its orogenetic character mainly between 2600 and 2800 mya . The cratonization was completed with about 2500 mya, whereby non-marine, coarse conglomerates and arkoses (sariolan conglomerate) as molasses complete this development. The archaic rocks include both highly metamorphic tonalitic-Trondhjemitic gneiss areas and weakly metamorphic greenstone synclinories. Within the Saamids, especially on the Kola Peninsula , there are even older rock complexes with an age of more than 3 billion years, the so-called catarchic rock complexes .

literature

  • Peter Faupl: Historical Geology. An introduction (= UTB . 2149). 2nd, improved edition. facultas wuv, Vienna 2003, ISBN 3-8252-2149-0 .