Carbon and U-Pb evidence for a Palaeoproterozoic crustal component in the Central Zone of the Limpopo Belt, South Africa
Supposedly mid-Archaean (c. 3.3 Ga) granulite-grade marbles from the Gumbu Group, Central Zone, Limpopo Belt (South Africa) have anomalously high δ13C values (+4.6 to +7‰) interpreted as minimum values for their limestone protoliths. Such elevated δ13
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|Source:||Journal of the Geological Society|
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