VK2021-Sabina-AKTW.pdf

The Alta–Kvænangen Tectonic Window (AKTW) is one of several terrains in northern Norway that represent a north-western continuation of the Precambrian Fennoscandian Shield beneath the Scandinavian Caledonides. The supracrustal complex of AKTW is similar to those of other tectonic windows in northern Norway, including Repparfjord Tectonic Window and Alteneset Tectonic Window, and it is predominantly composed of mafic lavas and mafic tuffs, intrusive gabbro-dolerite sills, minor ultramafic rocks and carbonate-rich metasedimentary rocks. In contrast to other tectonic windows in northern Norway, AKTW has not been a subject of intensive deformation processes (Bergh & Torske, 1988; Melezhik et al., 2015). Therefore, AKTW represents an ideal area to study lithostratigraphic features of Precambrian metavolcano-sedimentary complexes in the Fennoscandian Shield as well as associated ore-forming processes.