These maps, based on the reconstructions published by Lawver et al. (2002), show the configurations of northern hemisphere plates since the Permo-Triassic. Left, present day; middle - Cretaceous (ca. 100 Ma); right - Permo-Triassic boundary. The postulated subcrop of the Siberian Traps is shown in pink. Other magmatic provinces in the Arctic region are also shown: Franz Josef Land (115-125 Ma), Svalbard (Cretaceous); Alpha Ridge/Ellesmere Island (100 Ma).The postulated track of the Iceland plume is tentatively indicated on the left-hand map (Lawver and Muller, 1993), as the location of the present-day Iceland plume (star).