The Rombaken Tectonic Window (RTW) is a basement culminations within the Caledonian thrust nappes in northern Norway. It appear as an inlier of Paleoproterozoic supracrustal rocks on Paleoproterozoic basement rocks. The RTW consist of several metasedimentary and metavolcanic N-S striking belts enclosed within large granitic bodies. The RTW marks the boundary between Archean basement rocks to the ...