The Ocean Ridges around Iceland follow the calculated alignment of convection rolls, as shown here:
The resemblance is also found for the volcanic zones of Iceland as marked. The two axis the Icelandic ocean floor plateu parabola are marked to show the resemblance with the end of the old, formerly active, Ægir Ridge. Green circle shows the parabola of the ocean floor platform of Iceland, which is almost identifiable with a single look on a Google map. Analysis of that platform shows the two axis, one NS-axis through Hekla, the other EW-axis through Snæfellsjökull and Snæfell. A vertical view from Google maps can be viewed for comparison:
Magic Magma 