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24x7Report > Blog > World News > Scientists Solve Mystery Behind One Of The Earth’s Oldest Star Sand Dunes
World News

Scientists Solve Mystery Behind One Of The Earth’s Oldest Star Sand Dunes

Last updated: 2024/03/04 at 3:05 PM
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Scientists Solve Mystery Behind One Of The Earth's Oldest Star Sand Dunes
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The scientists used a method referred to as luminescence courting to work out the age of the star dune

In a groundbreaking research, researchers have lastly solved the thriller surrounding the age of Earth’s largest sand dunes. In response to BBC, these dunes additionally referred to as ‘Star dunes’ or ‘pyramid dunes’ are named after their distinctive shapes and attain tons of of metres in top. They’re widespread in deserts together with the sand seas of Africa, Arabia, China, and North America, in addition to on Mars and Saturn’s moon Titan.

Prof Geoff Duller of the Division of Geography and Earth Sciences at Aberystwyth stated, ”They’re extraordinary issues, one of many pure wonders of the world. From the bottom, they appear to be pyramids however from the air, you see a peak and radiating off it in three or 4 instructions these arms make them appear to be stars.”

Now, researchers have estimated the age of 1 such star dune referred to as Lala Lallia in Morocco, for the primary time. The scientists used a method referred to as luminescence courting to work out the age of the star dune. The strategy calculates when the grains of sand had been final uncovered to sunlight.

For the research, the analysis staff from the UK travelled to the southeast of Morocco to look at the 100-meter-high and 700-meter-wide Lala Lallia. They found that the very base of the dune was 13,000 years previous, however the higher a part of the construction had solely been shaped within the final 1,000 years or so, The Guardian reported. The dune took 900 years to type, rising by 6,400 metric tonnes yearly. After its preliminary formation, it stopped rising for about 8,000 years after which shortly expanded up to now a number of thousand years.

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These findings, based on researchers, help the speculation that the star dune’s formation was accompanied by a change in wind path over time.

Birkbeck College’s and fellow research co-author Charlie Bristow defined, ”Star dunes are shaped in areas with advanced wind regimes, which implies winds blowing from completely different instructions, and web sand accumulation, factors inside the desert the place huge piles of sand will be blown round to type big dunes. They type extraordinary and awe-inspiring landscapes… From the bottom they are often intimidating, cell mountains of sand.”
 

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TAGGED: Dunes, Earths, Mystery, oldest, sand, scientists, Solve, star

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