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The North Volcanic Zone of Iceland

The North Volcanic Zone is differs from the WVZ and EVZ in the south. It is aligned directly NS as a whole, but individual volcanic systems point slightly to the NE. Comparing the grid to the map of National Land Survey of Iceland gives this picture:

Drift - North Volcanic Zone

The vectors of tectonic drift as mesures for ISNET 2004 are divided around the NS-oriented NVZ. By marking the main polygons of the zone red, the main volcanic areas are seen to be found within them, thereby functioning to meet the tectonic drift as these polygons break up, making space for more magma input from below.

The directional effect on tectonics resulting from diverging to the east and west on the polygons is thereby quite obvious.

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