Looking at the grid of division lines of convection rolls, along with the division line within the tectonic plate, we can see crossings exactly where the uplift is taking place.
Crossings between tectonic plates division and mantle rolls division lines on the Reykjanes Peninsula
The regular bow of tectonic division line from Hveragerdi to the Reykjans Ridge is mirrored around the point close to the Blue Lagoon and Grindavik.
I have a BS degree in geology and provide this website about my analysis of convection rolls in the Earth's mantle and how they affect the surface.
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