Lead isotopes and trace elements from sulfides of Archean greenstone belts in South Africa; a contribution to the knowledge of the oldest known mineralizations

@inproceedings{Saager1976LeadIA,
  title={Lead isotopes and trace elements from sulfides of Archean greenstone belts in South Africa; a contribution to the knowledge of the oldest known mineralizations},
  author={Rudolf Saager and V. Koppel},
  year={1976}
}
Lead isotopic investigations of sulfides from gold-sulfide deposits in the Swaziland Sequence of the Barberton Mountain Land indicate that the primary lead of the sulfides is a two-stage lead forming a secondary isochron. From the slope of the secondary isochron a maximum age of 3,800 m.y. and a minimum age of 3,450 m.y. are indicated for the Swaziland Sequence rocks. The two-stage leads show that differentiation of the uranium-lead system had already occurred within this time span of the… CONTINUE READING