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Weird, Bumpy Landscape in African Desert Explained by Ancient Ice Stream
By Yasemin Saplakoglu, Staff Writer | February 8, 2019 07:11am ET
- click for image -
https://img.purch.com/h/1400/aHR0cDovL3d3dy5saXZlc2NpZW5jZS5jb20vaW1hZ2VzL2kvMDAwLzEwNC8xNTgvb3JpZ2luYWwvYWZyaWNhLWljZS1hZ2UtOS1tZWdhd2hhbGViYWNrLXN0cmlhdGlvbnMuanBn
Here, grooves carved into the bedrock by the ancient ice stream in Namibia.
Credit: Copyright 2019 West Virginia University
About 300 million years ago, southern Africa was covered in ice. Now, scientists have found traces of an ancient ice stream in the hills of the desert region.
On a journey through the deserts of northern Namibia, two geologists discovered hills that were shaped in a way that looked like they had been eroded by glaciers.
Indeed, these structures turned out to be drumlins — a type of egg-shaped hill that is often found beneath glaciers — and whalebacks and megawhalebacks, which are their larger, more elliptical counterparts. [Photos: Traces of an Ancient Ice Stream]
. . .
More:
https://www.livescience.com/64709-ancient-ice-stream-namibia.html?utm_source=notification
