THE LATE PROTEROZOIC POSITION OF THE UKRAINIAN SHIELD FROM PALEOMAGNETIC DATA

Abstract

On the basis of the paleomagnetic study of 300 dykes of various composition and with ages ranging from 2300 to 600 Ma, it is established that the peri-equatorial position of the Ukrainian Shield for this time span was rather stable, with latitudes displaced by no more than 30°. At the very beginning of the Riphean, the Ukrainian Shield was turning counter-clockwise at a rate of 0,05°/1 Ma.The drift of the Ukrainian Shield in the Proterozoic is not conformable with that of the Baltic Shield. The former is more mobile structure than the latter. This implies a new viewpoint of the consolidation of the basement of the East-European Platform.