Episodes of seismicity and volcanism within the volcanic systems of the peninsula as well as the characteristics of the systems are explained but with greater emphasis on the Krýsuvík system and the Brennisteinsfjöll system.
Jarðskjálftahrinur og eldsumbrotahrinur í fjórum eldstöðvakerfum skagans ásamt einkennum kerfanna eru útskýrð en þó sérstaklega einkenni Krýsuvíkurkerfisins og Brennisteinsfjallakerfisins.