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VaalbaraFormed: 3.3 Billion Years Ago?
We know very little about the first continent (though, not exactly super, since there wasn't much land in those days), so the shape, size and scale of the theorized Vaalbara is pretty speculative. The two oldest cratons on the planet both have the oldest rock dated, so assumptions are made about what Vaalbara might have looked like based only on these two patches of oldness. It's named for the 'Brangelina' style mashup of the two cratons: the South African Kaapvaal Craton and the Australian Pilbara Craton. Paleomagnetic data from both these areas show that these two cratons could have been from the same supercontinent.
The same evidence that shows the possible existence of Vaalbara also indicates that it started to break up after 2.5 billion years.<< PREV 1 of 9 NEXT >>
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