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Waspie_Dwarf

Revealing the shape of water on Mars

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Waspie_Dwarf

Clear as mud: Desiccation cracks help reveal the shape of water on Mars

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BOULDER, CO, USA: As Curiosity rover marches across Mars, the red planet’s watery past comes into clearer focus.

In early 2017 scientists announced the discovery of possible desiccation cracks in Gale Crater, which was filled by lakes 3.5 billion years ago. Now, a new study has confirmed that these features are indeed desiccation cracks, and reveals fresh details about Mars' ancient climate.

"We are now confident that these are mudcracks," explains lead author Nathaniel Stein, a geologist at the California Institute of Technology in Pasadena. Since desiccation mudcracks form only where wet sediment is exposed to air, their position closer to the center of the ancient lake bed rather than the edge also suggests that lake levels rose and fell dramatically over time.

Read More: The Geological Society of America

 

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