The Vakkejokk Breccia : An Early Cambrian proximal impact ejecta layer in the North-Swedish Caledonides
The ≤27 m thick Vakkejokk Breccia is intercalated in autochthon Lower Cambrian along the Caledonian front north of Lake Torneträsk, Lapland, Sweden. The spectacular breccia is here interpreted as a proximal ejecta layer associated with an impact crater, probably ~2-3 km in size, located below Caledonian overthrusts immediately north of the main breccia section. The impact would have taken place in