The name Vaalbara is given to the supposed Earth's first supercontinent. From radiometric data of the crates that Vaalbara consisted of, it appears that Vaalbara consisted about 3.3 billion years ago (3.3 Ga), and perhaps even as much as 3.6 Ga. The evidence includes geochronological and paleomagnetic studies among two archaeologists, the Cape vaal craton (South Africa) and the Pilbarakraton (Western Australia).

Further clues follow the great similarities between the greenstone belts and gneiss belts of these two cratons. These same archaeological greenstone belts can now be found across the edge of the Superiorkraton in Canada and are also spread over craters that were part of the pondocontinents Gondwana and Laurazia. The drift trails of the Cape Vaal and Pilbarakraton further show that they were ever contiguous.

It is not certain when Vaalbara broke apart, but geochronological and paleomagnetic evidence shows that the two cratons had a 30-degree separation at 2.78 to 2.77 Ga. This implies that they were no longer contiguous after about 2.8 Ga.

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