Division between convection rolls from Iceland to Greenland can be compared with the map below.Please compare this with the main line from Iceland to Greenland of the Convection Rolls Model.
In the mantle there is a layer that explains the heat anomaly found under the glacier of Greenland. It has been calculated and is shown here above.
The lines are obviously approximately the same. Usually geologists regard Vatnajökull as the site of hot spot, so therefore someone has drawn the line over Iceland a little bit eastwards of the calculated division line between convection rolls.
I am a geologist, graduated from the University of Iceland, and taught geology for a few years. I have gained some knowledge about Earth's inner structure, so I provide this website as my contribution to answer one of the greatest questions remaining within the realm of geoscience. Experiments show that the mantle should form convection rolls when close to the melting point. I took this literally, and calculated the dimensions and shape of these mantle convection rolls. Then I compare that model with the surface. This makes it possible to provide many interesting examples about geology found on my blog.
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Magic Magma 