The Reykjanes Ridge is mainly shaped by the equatorial system of convection rolls, but the direction shifts when the polar convection rolls system takes over within the transition zone at the latitudes where Icealnd is located.
It must be remembered, that the main division line is actually 1.5° farther to the East, where the division between large lower mantle convection rolls is found.
I have a BS degree in geology, BA in anthropology, graduated in Chinese language and as a certified tourist guide. I provide this website about my contribution to answer the greatest question remaining about our Earth. I have analyzed the convection rolls within the Earth's mantle and how they affect the surface. This makes it possible to provide many interesting examples about geology found on my blog.
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