The present study gives a new 207Pb/206Pb minimum age of 1723 Ma for zircons from a tonalite of the Weener Intrusive Suite as well as a discordia age of 1132 + 26 /-23 Ma for a granite of the Gamsberg pluton. TDM Sm-Nd model ages obtained for members of the Weener Intrusive Suite and the Gamsberg Granite Suite range between 1.6 and 2.4 Ga, thus confinning the fonnation of the Rehoboth crust during the early Proterozoic and its later reworking.