The area includes a part of the Rombak-Sjangeli window of Pre-Cambrian basement unconformably overlain by a thin sequence of autochthonous basal conglomerate, quartzites, etc., which are Lower Cambrian and in part possibly Eocambrian. These are followed concordantly by low-grade micaceous and chloritic schists which are essentially cataclastic in origin and contain tectonic inclusions of Basement rocks. They belong to the Abisko Nappe and are parautochthonous, contrasting with higher grade and completely recrystallized Garnet Mica Schists of the overlying and allochthonous Seve-Köli Nappe.