Paleomagnetism of the dike systems in Finland v. remanent magnetization of the Åva intrusives

Abstract

The direction and strength of remanent magnetization were measured for different intrusive rocks of the Precambrian Åva ring intrusion. Two nearly opposite directions were revealed after demagnetization, both in agreement with earlier measurements in SW-Finland. The pole sites are compared with those measured in Sweden. The pole wandering curve and the reversal periods are considered as tools in the Precambrian stratigraphy.