The ranges of the north and south Permian basins are from Legler et al. (2005). The range of the Carboniferous foreland basin is from Ziegler (1988), including the present-day southern North Sea Basin ...
a) The terrestrial Old Red Sandstone dominated the Devonian sediments in the North Sea Basin. b) The Varisian orogeny occurred in the Late Carboniferous, forming a foreland basin at the front of the ...