Rubidium-Strontium Date of Possibly 3 Billion Years for a Granitic Rock from Antarctica

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Science  04 Sep 1970:
Vol. 169, Issue 3949, pp. 977-978
DOI: 10.1126/science.169.3949.977


A single total rock sample of biotite granite from Jule Peaks, Antarctica, has been dated by the rubidium-strontium method at about 3 billion years. The juxtaposition of this sector of Antarctica with Africa in the Dietz and Sproll continental drift reconstruction results in a possible geochronologic fit of the Princess Martha Coast of Antarctica with a covered possible notheastern extension of the African Swaziland Shield, which contains granitic rocks that are also 3 billion years old.