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Keywords from Image Description:
Tectonic Map of Europe noleg. decdc Mainly Baltic Shield and East European Platform last folded in Precambrian times acbec Laurentian crust remnants in Northwest Europe last folded during Caledonian Orogeny Early Paleozoic acccf Baltic crust folded during Caledonian Orogeny bead Avalonian crust last folded during Caledonian Orogeny