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Geology of the Okavango Delta

In Botswana, the Okavango River flows into the Kalahari Desert, creating an alluvial fan (a sort of inland delta) that is fed by an annual flood. French scientists, accompanied by Botswana researchers, are studying this phenomenon.
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They are interested in the activity of the tectonic faults that delimit the area, ground movements, the flood and the interactions with the phreatic zone underneath. They are studying the evolution of this rare geological system, which appeared about ten thousand years ago and which could disappear naturally if its water was captured by the neighbouring Zambezi River, or be transformed by rainfall variations linked to climate change.
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