Early Archaean age for the Sebakwian group at Selukwe, Rhodesia

Details Early Archaean age for the Sebakwian group at Selukwe, Rhodesia Early Archaean age for the Sebakwian group at Selukwe, Rhodesia

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976natur.264..536m&link_type=abstract

Nature, Volume 264, Issue 5586, pp. 536-538 (1976).

Physics

6

Scientific paper

WE present here the results of a Rb-Sr age and isotope study of granite (about 70% SiO2) from the north-eastern sector of the Mont d'Or formation in the central part of the Rhodesian Archaean craton (Fig. 1). A nine-point Rb-Sr whole rock isochron (Fig. 2, Table 1) yields an age of 3,420+/-60 Myr, with an initial 87Sr/86Sr ratio of 0.711+/-0.001 (both errors at 1 σ). We regard this as the age of intrusion.

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