Comparing Iceland and Norway at the same latitudes 30° apart should lead to some analogy due to the same pattern of convection rolls. Here is an example.
East and North Volcanic Zones of IcelandMap of Norway with markings 30° east of the East and North Volcanic Zones of Iceland
The similarity is quite striking. A NS-structure is found accurately 30° east of the North Volcanic Zone of Iceland, which is aligned exactly NS. The bending structure connecting with the NE-SW oriented East Volcanic Zone of Iceland is found exactly at the same latitude in Norway. In addition, the points 30° apart, of Hekla in Iceland and in the Trondheim area in Norway, are aligned exactly in the same way.
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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Magic Magma 