Abstract
Palaeomagnetic investigations and isotopic age determinations were made on various Precambrian and Palaeozoic rocks from southern and central Sweden. (1) In Dalarna (central Sweden), Rb-Sr determinations show that the Upper Dala volcanics and the Dala “Garberg granite” have a Gothian age of 1405 ± 30 million years. K-Ar measurements on
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