Fractures in the fissure swarms of the Northern Volcanic Rift Zone are characteristically oriented towards north or NNE, i.e. more or less perpendicular to the spreading direction.
Sprungur innan sprungusveima Norðurgosbeltisins stefna jafnan til norðurs eða til norð-norðausturs, meira og minna hornrétt á flekarekið.