the "oskarshamn-jönköping belt" is a granitoid region of the svecofennian orogen completely surrounded by rocks of transscandinavian igneous belt. as the name implies the "oskarshamn-jönköping belt" runs as sliver from the vicinity of oskarshamn northwest to the jönköping area. it has been proposed that the oskarshamn-jönköping belt continues beneath the east european platform in lithuania.