Three orogenic events, Porsanger (pre-800 Ma), Finnmarkian (490-540 Ma) and Scandian (400-425 Ma) have been proposed to explain the evolution of the Kalak Nappe Complex, a major component of the Caledonian orogen in Norway. The Kalak Nappe Complex has been considered as Baltoscandian passive margin metasediments telescoped eastwards onto the Baltic Shield. Two granitoid bodies with a weighted mean U-Pb zircon age of 438 +/- 2 Ma cut the Hellefjord Schist, regarded as the highest stratigraphic unit in the Kalak Nappe Complex. A volcaniclastic unit within the HellefJord Schist yields an identical U-Pb zircon age of 438 +/- 4 Ma. Magmatism and sedimentation are synchronous within analytical error. The HellefJord Schist cannot have been affected by Finnmarkian or Porsanger orogenesis and cannot be part of a continuous stratigraphic package. A Laurentian affinity for these sediments is suggested and radical revision of the tectonostratigraphy is required. The HellefJord Schist is reassigned to the Mageroy Nappe of the Upper-Uppermost Allochthon. As the entire stratigraphy is infolded with the HellefJord Schist a major deformation phase of Scandian age affected the Kalak Nappe Complex. The HellefJord Schist represents a Laurentian flysch sequence that was juxtaposed with Baltica during the Scandian Orogeny.