Deposit glasial sané  kakeniang ring Afrika Selatan mawit saking 2,2 Ga ri tatkala punika, manut kawéntenan paleomagnetik, punika pastika nampek magenah ring khatulistiwa.
Glacial deposits found in South Africa date back to 2.2 Ga, at which time, based on paleomagnetic evidence, they must have been located near the equator.