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NASA's new Mars image shows sandy 'steps' in a big impact crater
Brittany A. Roston - Sep 19, 2019, 7:25 pm CDT
Southwest of Mars’ Arabia Terra region lies a landmark called Danielson Crater, an impact crater that has existed on the planet for ‘millions or billions’ of years, according to NASA. At some point after the crater formed, sediment began to settle into the large hole in layers, slowly becoming cemented into place. Eons of formation and erosion have resulted in a striking landscape, one recently shared by NASA in a new image.
Danielson Crater measures around 42 miles across, according to NASA, which says that some cemented sediment layers in the crater are more resistant to the effects of erosion than others.
The stronger layers have managed to resist erosion in ways the weaker layers couldn’t, resulting in the slow formation of what appears to be ‘steps’ made of rock.
These steps are covered in sand that is blown across the rocky crater, covering them with a layer that appears bluer in the image above. NASA says the photo was captured by its Mars Reconnaissance Orbiter (MRO) spacecraft and that it features contrast-enhanced colors to better show the difference between rock and sand.
More:
https://www.slashgear.com/nasas-new-mars-image-shows-sandy-steps-in-a-big-impact-crater-19592290/
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Viet Nam
Thailand
"near Xinjie town of Yuanyang" China
Tegalalang Rice Terrace, Ubud, Bali, Indonesia
Banaue Rice Terraces, Ifugao, Philippines
Hamanoura Rice Terraces, Saga Prefecture, Japan
Annapurna Rice Terraces, Nepal
Large, beautiful photos of Asian rice terraces, "17 Tremendous Terraced Rice Fields" :
http://www.lovethesepics.com/2011/02/17-tremendous-terraced-rice-fields/
If it hadn't been for seeing your post, I would haven't thought of going to find photos of the mountainous rice paddies. Wow, oh, wow, and there are so many more in google images, too.
Very glad to have found them.
Korea
Rape flowers bloom in mountain terraces in Zhejiang
Mallorca
Inca agricultural terraces, Peru
Machu Picchu Terraces
India
