Neoproterozoic palaeogeography in the North Atlantic Region: Inferences from the Akkajaure and Seve Nappes of the Scandinavian Caledonides

► Akkajaure Nappe Complex dominated by 1800 Ma and 1880 Ma crystalline rocks. ► Ages and Nd isotope chemistry correlate to other Fennoscandian basement. ► Some Seve nappe sediments deposited after 730 Ma. ► Seve nappes lack material from local Fennoscandian basement. ► Detrital zircon in (para)autochthonous Dividal Gp identical to Seve and modern rivers.