The Nile River flowing through Egypt could be six times larger than the previous one, according to a study estimated to have originated at least 30 million years.
The study, published in the journal Nature Geoscience, assessed the links between geographic and physical characteristics – or topography – of the Nile River with the flow of molten rock in the cloak country.
Researchers, including those from the University of Texas (UT) in Austen, USA, linked the favorable nature of the Nile topography with a mantle rock slab pushed up against the Ethiopian highlands in the south and dragged the surface down north.
This gentle gradient, they said, keeps the Nile steady north from start to finish.
The study says Neil would have turned west long ago – possibly changing the course of history with him – if it had not been for the mantle movement that kept the river on the road.
According to researchers, the slow motion of the deep mantle is one of the key forces shaping the Earth's landscape and geological processes.
The earth cloak is made up of solid rock that flows like fluid for long periods, and different areas of the mantle have different circulation patterns, they say.
As part of the study, the researchers traced the geological history of the Nile by studying an ancient volcanic rock in the Ethiopian Highlands and correlating it with the vast deposits of river bed buried beneath the Nile Delta.
Based on the findings, the researchers said Ethiopian highlands remain at a similar height for millions of years due to the support of mantle rock from below.
"We know that the high topography of the Ethiopian plateau was formed about 30 million years ago," said study co-author Thorsten Becker of UT.
It was unclear how the landscape had retained its physical characteristics until now, researchers say.
When scientists performed computer simulations to re-create 40 million years of tectonic activity on the Earth's plate, the model showed the arrival of a hot mantle, likely leading to a lava spill that formed the Ethiopian highlands, while simultaneously activating a floating lane next to a persistent mantle. day to day.
Researchers say the simulation reproduced landscape changes exactly as expected, along with minor landscape details such as white-water rapids found along the Nile.
Combining diverse geological data with cutting-edge, landscape modeling was key to the study, say researchers who now hope to apply the same technique to other rivers like the Yangtze and Congo.
"I think this technique gives us something we haven't had in the past," said study co-author Petar Glisovic of the University of Quebec in Canada.
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