1) Geological process 
Vaalbara is the Earth`s theorized first supercontinent. It was a complete supercontinent by {mya|3100|million years ago}. Vaalbara formed possibly beginning {mya|3600|million years ago} and was broken apart by about {mya|2800|million years ago}. Vaalbara consisted of the eastern South African Kaapvaal craton joined with the Pilbara craton in nort....