Title: Age of carbonatite and phoscorite magmatism of the Phalaborwa Complex (South Africa)
Abstract: The Phalaborwa Complex (South Africa) has been dated by UPb analysis of uranothorianite and baddeleyite yielding an age of 2047 + 11/−8 Ma for caronatite and phoscorite magmatism. Baddeleyite yields an age comparable to the age determined on uranothorianite and provides a reliable age indicator. Ages of carbonatite and silicate magmatism cannot be resolved as different events. Confirmation of K-rich alkaline magmas produced in the mantle as early as 2047 Ma suggests that significant chemical heterogeneities existed prior to 2000 Ma.
Publication Year: 1984
Publication Date: 1984-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 41
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