Compare in Google maps Hekla and its counterpart 30° to the East. Why? Because the same convection cell pattern is found under the tectonic plates at 30° interval on the same latitude. Find the correct spot in Norway and compare to Hekla. The pictures look strikingly similar! Still, Norway is geologically not similar to Iceland at all. How can this be?
Hekla and Trondheim area – 30° of longitude apart compared
All this can easily be explained. So join the club!
Published by Steingrimur Thorbjarnarson
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 