Researchers at the Desert Research Institute (DRI) studied sediments preserved at the foot of sand dunes, particularly in Australia’s fire-prone Kulula sand plains.
The team found that the dunes have existed for the past 12,000 years. These stable dunes collect the remains of coal from local fires, allowing scientists to reconstruct the history of the fires.
Younger dunes provided information about individual fires, while older dunes provided insight into long-term patterns of fire frequency.
The study shows that sand dunes around the world can serve as valuable repository of fire history, especially in arid regions where there is no traditional sedimentation from lakes or ponds.
Source: Ferra
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