The Penninic Domain (also known as the Penninic Nappes) (German: ) strikes south of the Helvetic Domain in a strip, a few kilometres wide, in the form of the Rhenodanubian Flysch Zone. It comprises Cretaceous - lower Tertiary siliciclastic-carbonate turbiditic deepwater sediments , which represent a portion of the erosion debris forming the Alpine sedimentary wedge that in the further course of formation of the Alps was itself incorporated into the orogen and overthrust over a distance of about 100 km to the north onto the Helvetic units.