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Geotechnical Egineering News tagged with [sandstone]

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Ennedi Massif: Africa's remote geological wonder
BBC NEWS   16 May 2023   Africa   Chad  
<p>My eyes lifted up towards a rocky ledge carved into a sandstone cliff in the heart of Chad's Ennedi Massif. I saw a face, then, as my eyes adjusted to the gloam, another appeared. Painted in bright ochre and white, men were riding camels and giant cows ...
The Wave Of Arizona Is A 190-Million-Year-Old Geological Masterpiece
IFLScience   22 March 2023   USA   Arizona  
Feast your eyes while you can because access to the Wave is very limited. Image credit: Pung/Shutterstock.com
<p>The Wave can be found in the Coyote Buttes North area of the Colorado Plateau just along the border between Utah and Arizona. <br />It&rsquo;s made of sandstone, which is relatively prone to erosion from water and wind over lengthy periods of time. Sandstone ...
Climate change: A small green rock's warning about our future
BBC NEWS   28 April 2021   Antarctica  
An extraordinary journey: The atomic make-up of small crystals in the rock reveal its origin
<p>It's an unassuming rock, greenish in colour, and just over 4cm in its longest dimension. And yet this little piece of sandstone holds important clues to all our futures.<br />It was recovered from muds in the deep ocean, far off the coast of modern-day ...