* Astronomy

Nullarbor region once full of fast-flowing rivers

University of Adelaide geologists have shed new light on the origin of Australia's largest delta, the Ceduna Delta, and the river systems which drained the continent millions of years before the Murray-Darling system came into existence.
It has long been thought that a massive river system, almost 2000km long, extended from Queensland's eastern margin and entered the sea near Ceduna, depositing enormous quantities of sediment from across the continent.
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