The Tungnafellsjökull fissure swarm is located in Central Iceland Volcanic Zone near the center of the hot spot of Iceland and the triple junction between the Eurasian plate, North-American plate and the Hreppar microplate.
Eldstöðvakerfi Tungnafellsjökuls er staðsettur innan Mið-Íslands gosbeltisins nærri miðju íslenska heita reitsins og þrípunktsins milli Evrasíu flekans, Norður-Ameríkuflekans og Hreppaflekans.