Moab Khotsong, where 1.2-billion-year-old groundwater has been discovered, is located in which country?

A. South Africa

B. Japan

C. Greece

D. Turkey


Geologists have discovered 1.2-billion-year-old groundwater about 3 km below surface in Moab Khotsong. It is a gold- and uranium-producing mine in South Africa. This ancient groundwater is enriched in the highest concentrations of radiogenic products. Uranium and other radioactive elements naturally occur in the surrounding host rock. They provide information on co-habitating microorganisms previously discovered in the Earth’s deep subsurface.

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